sys/netpfil/pf/pf_ioctl.c

   1 /*-
   2  * Copyright (c) 2001 Daniel Hartmeier
   3  * Copyright (c) 2002,2003 Henning Brauer
   4  * Copyright (c) 2012 Gleb Smirnoff <glebius@FreeBSD.org>
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  *    - Redistributions of source code must retain the above copyright
  12  *      notice, this list of conditions and the following disclaimer.
  13  *    - Redistributions in binary form must reproduce the above
  14  *      copyright notice, this list of conditions and the following
  15  *      disclaimer in the documentation and/or other materials provided
  16  *      with the distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  21  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  22  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  24  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  26  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  28  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  *
  31  * Effort sponsored in part by the Defense Advanced Research Projects
  32  * Agency (DARPA) and Air Force Research Laboratory, Air Force
  33  * Materiel Command, USAF, under agreement number F30602-01-2-0537.
  34  *
  35  *      $OpenBSD: pf_ioctl.c,v 1.213 2009/02/15 21:46:12 mbalmer Exp $
  36  */
  37
  38 #include <sys/cdefs.h>
  39 __FBSDID("$FreeBSD$");
  40
  41 #include "opt_inet.h"
  42 #include "opt_inet6.h"
  43 #include "opt_bpf.h"
  44 #include "opt_pf.h"
  45
  46 #include <sys/param.h>
  47 #include <sys/bus.h>
  48 #include <sys/conf.h>
  49 #include <sys/endian.h>
  50 #include <sys/fcntl.h>
  51 #include <sys/filio.h>
  52 #include <sys/interrupt.h>
  53 #include <sys/jail.h>
  54 #include <sys/kernel.h>
  55 #include <sys/kthread.h>
  56 #include <sys/lock.h>
  57 #include <sys/mbuf.h>
  58 #include <sys/module.h>
  59 #include <sys/proc.h>
  60 #include <sys/rwlock.h>
  61 #include <sys/smp.h>
  62 #include <sys/socket.h>
  63 #include <sys/sysctl.h>
  64 #include <sys/md5.h>
  65 #include <sys/ucred.h>
  66
  67 #include <net/if.h>
  68 #include <net/if_var.h>
  69 #include <net/vnet.h>
  70 #include <net/route.h>
  71 #include <net/pfil.h>
  72 #include <net/pfvar.h>
  73 #include <net/if_pfsync.h>
  74 #include <net/if_pflog.h>
  75
  76 #include <netinet/in.h>
  77 #include <netinet/ip.h>
  78 #include <netinet/ip_var.h>
  79 #include <netinet6/ip6_var.h>
  80 #include <netinet/ip_icmp.h>
  81
  82 #ifdef INET6
  83 #include <netinet/ip6.h>
  84 #endif /* INET6 */
  85
  86 #ifdef ALTQ
  87 #include <net/altq/altq.h>
  88 #endif
  89
  90 static int               pfattach(void);
  91 static struct pf_pool   *pf_get_pool(char *, u_int32_t, u_int8_t, u_int32_t,
  92                             u_int8_t, u_int8_t, u_int8_t);
  93
  94 static void              pf_mv_pool(struct pf_palist *, struct pf_palist *);
  95 static void              pf_empty_pool(struct pf_palist *);
  96 static int               pfioctl(struct cdev *, u_long, caddr_t, int,
  97                             struct thread *);
  98 #ifdef ALTQ
  99 static int               pf_begin_altq(u_int32_t *);
 100 static int               pf_rollback_altq(u_int32_t);
 101 static int               pf_commit_altq(u_int32_t);
 102 static int               pf_enable_altq(struct pf_altq *);
 103 static int               pf_disable_altq(struct pf_altq *);
 104 static u_int32_t         pf_qname2qid(char *);
 105 static void              pf_qid_unref(u_int32_t);
 106 #endif /* ALTQ */
 107 static int               pf_begin_rules(u_int32_t *, int, const char *);
 108 static int               pf_rollback_rules(u_int32_t, int, char *);
 109 static int               pf_setup_pfsync_matching(struct pf_ruleset *);
 110 static void              pf_hash_rule(MD5_CTX *, struct pf_rule *);
 111 static void              pf_hash_rule_addr(MD5_CTX *, struct pf_rule_addr *);
 112 static int               pf_commit_rules(u_int32_t, int, char *);
 113 static int               pf_addr_setup(struct pf_ruleset *,
 114                             struct pf_addr_wrap *, sa_family_t);
 115 static void              pf_addr_copyout(struct pf_addr_wrap *);
 116
 117 VNET_DEFINE(struct pf_rule,     pf_default_rule);
 118
 119 #ifdef ALTQ
 120 static VNET_DEFINE(int,         pf_altq_running);
 121 #define V_pf_altq_running       VNET(pf_altq_running)
 122 #endif
 123
 124 #define TAGID_MAX        50000
 125 struct pf_tagname {
 126         TAILQ_ENTRY(pf_tagname) entries;
 127         char                    name[PF_TAG_NAME_SIZE];
 128         uint16_t                tag;
 129         int                     ref;
 130 };
 131
 132 TAILQ_HEAD(pf_tags, pf_tagname);
 133 #define V_pf_tags               VNET(pf_tags)
 134 VNET_DEFINE(struct pf_tags, pf_tags);
 135 #define V_pf_qids               VNET(pf_qids)
 136 VNET_DEFINE(struct pf_tags, pf_qids);
 137 static MALLOC_DEFINE(M_PFTAG, "pf_tag", "pf(4) tag names");
 138 static MALLOC_DEFINE(M_PFALTQ, "pf_altq", "pf(4) altq configuration db");
 139 static MALLOC_DEFINE(M_PFRULE, "pf_rule", "pf(4) rules");
 140
 141 #if (PF_QNAME_SIZE != PF_TAG_NAME_SIZE)
 142 #error PF_QNAME_SIZE must be equal to PF_TAG_NAME_SIZE
 143 #endif
 144
 145 static u_int16_t         tagname2tag(struct pf_tags *, char *);
 146 static u_int16_t         pf_tagname2tag(char *);
 147 static void              tag_unref(struct pf_tags *, u_int16_t);
 148
 149 #define DPFPRINTF(n, x) if (V_pf_status.debug >= (n)) printf x
 150
 151 struct cdev *pf_dev;
 152
 153 /*
 154  * XXX - These are new and need to be checked when moveing to a new version
 155  */
 156 static void              pf_clear_states(void);
 157 static int               pf_clear_tables(void);
 158 static void              pf_clear_srcnodes(struct pf_src_node *);
 159 static void              pf_kill_srcnodes(struct pfioc_src_node_kill *);
 160 static void              pf_tbladdr_copyout(struct pf_addr_wrap *);
 161
 162 /*
 163  * Wrapper functions for pfil(9) hooks
 164  */
 165 #ifdef INET
 166 static int pf_check_in(void *arg, struct mbuf **m, struct ifnet *ifp,
 167     int dir, struct inpcb *inp);
 168 static int pf_check_out(void *arg, struct mbuf **m, struct ifnet *ifp,
 169     int dir, struct inpcb *inp);
 170 #endif
 171 #ifdef INET6
 172 static int pf_check6_in(void *arg, struct mbuf **m, struct ifnet *ifp,
 173     int dir, struct inpcb *inp);
 174 static int pf_check6_out(void *arg, struct mbuf **m, struct ifnet *ifp,
 175     int dir, struct inpcb *inp);
 176 #endif
 177
 178 static int              hook_pf(void);
 179 static int              dehook_pf(void);
 180 static int              shutdown_pf(void);
 181 static int              pf_load(void);
 182 static int              pf_unload(void);
 183
 184 static struct cdevsw pf_cdevsw = {
 185         .d_ioctl =      pfioctl,
 186         .d_name =       PF_NAME,
 187         .d_version =    D_VERSION,
 188 };
 189
 190 static volatile VNET_DEFINE(int, pf_pfil_hooked);
 191 #define V_pf_pfil_hooked        VNET(pf_pfil_hooked)
 192 VNET_DEFINE(int,                pf_end_threads);
 193
 194 struct rwlock                   pf_rules_lock;
 195 struct sx                       pf_ioctl_lock;
 196
 197 /* pfsync */
 198 pfsync_state_import_t           *pfsync_state_import_ptr = NULL;
 199 pfsync_insert_state_t           *pfsync_insert_state_ptr = NULL;
 200 pfsync_update_state_t           *pfsync_update_state_ptr = NULL;
 201 pfsync_delete_state_t           *pfsync_delete_state_ptr = NULL;
 202 pfsync_clear_states_t           *pfsync_clear_states_ptr = NULL;
 203 pfsync_defer_t                  *pfsync_defer_ptr = NULL;
 204 /* pflog */
 205 pflog_packet_t                  *pflog_packet_ptr = NULL;
 206
 207 static int
 208 pfattach(void)
 209 {
 210         u_int32_t *my_timeout = V_pf_default_rule.timeout;
 211         int error;
 212
 213         if (IS_DEFAULT_VNET(curvnet))
 214                 pf_mtag_initialize();
 215         pf_initialize();
 216         pfr_initialize();
 217         pfi_initialize();
 218         pf_normalize_init();
 219
 220         V_pf_limits[PF_LIMIT_STATES].limit = PFSTATE_HIWAT;
 221         V_pf_limits[PF_LIMIT_SRC_NODES].limit = PFSNODE_HIWAT;
 222
 223         RB_INIT(&V_pf_anchors);
 224         pf_init_ruleset(&pf_main_ruleset);
 225
 226         /* default rule should never be garbage collected */
 227         V_pf_default_rule.entries.tqe_prev = &V_pf_default_rule.entries.tqe_next;
 228 #ifdef PF_DEFAULT_TO_DROP
 229         V_pf_default_rule.action = PF_DROP;
 230 #else
 231         V_pf_default_rule.action = PF_PASS;
 232 #endif
 233         V_pf_default_rule.nr = -1;
 234         V_pf_default_rule.rtableid = -1;
 235
 236         V_pf_default_rule.states_cur = counter_u64_alloc(M_WAITOK);
 237         V_pf_default_rule.states_tot = counter_u64_alloc(M_WAITOK);
 238         V_pf_default_rule.src_nodes = counter_u64_alloc(M_WAITOK);
 239
 240         /* initialize default timeouts */
 241         my_timeout[PFTM_TCP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL;
 242         my_timeout[PFTM_TCP_OPENING] = PFTM_TCP_OPENING_VAL;
 243         my_timeout[PFTM_TCP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL;
 244         my_timeout[PFTM_TCP_CLOSING] = PFTM_TCP_CLOSING_VAL;
 245         my_timeout[PFTM_TCP_FIN_WAIT] = PFTM_TCP_FIN_WAIT_VAL;
 246         my_timeout[PFTM_TCP_CLOSED] = PFTM_TCP_CLOSED_VAL;
 247         my_timeout[PFTM_UDP_FIRST_PACKET] = PFTM_UDP_FIRST_PACKET_VAL;
 248         my_timeout[PFTM_UDP_SINGLE] = PFTM_UDP_SINGLE_VAL;
 249         my_timeout[PFTM_UDP_MULTIPLE] = PFTM_UDP_MULTIPLE_VAL;
 250         my_timeout[PFTM_ICMP_FIRST_PACKET] = PFTM_ICMP_FIRST_PACKET_VAL;
 251         my_timeout[PFTM_ICMP_ERROR_REPLY] = PFTM_ICMP_ERROR_REPLY_VAL;
 252         my_timeout[PFTM_OTHER_FIRST_PACKET] = PFTM_OTHER_FIRST_PACKET_VAL;
 253         my_timeout[PFTM_OTHER_SINGLE] = PFTM_OTHER_SINGLE_VAL;
 254         my_timeout[PFTM_OTHER_MULTIPLE] = PFTM_OTHER_MULTIPLE_VAL;
 255         my_timeout[PFTM_FRAG] = PFTM_FRAG_VAL;
 256         my_timeout[PFTM_INTERVAL] = PFTM_INTERVAL_VAL;
 257         my_timeout[PFTM_SRC_NODE] = PFTM_SRC_NODE_VAL;
 258         my_timeout[PFTM_TS_DIFF] = PFTM_TS_DIFF_VAL;
 259         my_timeout[PFTM_ADAPTIVE_START] = PFSTATE_ADAPT_START;
 260         my_timeout[PFTM_ADAPTIVE_END] = PFSTATE_ADAPT_END;
 261
 262         bzero(&V_pf_status, sizeof(V_pf_status));
 263         V_pf_status.debug = PF_DEBUG_URGENT;
 264
 265         V_pf_pfil_hooked = 0;
 266
 267         /* XXX do our best to avoid a conflict */
 268         V_pf_status.hostid = arc4random();
 269
 270         for (int i = 0; i < PFRES_MAX; i++)
 271                 V_pf_status.counters[i] = counter_u64_alloc(M_WAITOK);
 272         for (int i = 0; i < LCNT_MAX; i++)
 273                 V_pf_status.lcounters[i] = counter_u64_alloc(M_WAITOK);
 274         for (int i = 0; i < FCNT_MAX; i++)
 275                 V_pf_status.fcounters[i] = counter_u64_alloc(M_WAITOK);
 276         for (int i = 0; i < SCNT_MAX; i++)
 277                 V_pf_status.scounters[i] = counter_u64_alloc(M_WAITOK);
 278
 279         if ((error = kproc_create(pf_purge_thread, curvnet, NULL, 0, 0,
 280             "pf purge")) != 0)
 281                 /* XXXGL: leaked all above. */
 282                 return (error);
 283         if ((error = swi_add(NULL, "pf send", pf_intr, curvnet, SWI_NET,
 284             INTR_MPSAFE, &V_pf_swi_cookie)) != 0)
 285                 /* XXXGL: leaked all above. */
 286                 return (error);
 287
 288         return (0);
 289 }
 290
 291 static struct pf_pool *
 292 pf_get_pool(char *anchor, u_int32_t ticket, u_int8_t rule_action,
 293     u_int32_t rule_number, u_int8_t r_last, u_int8_t active,
 294     u_int8_t check_ticket)
 295 {
 296         struct pf_ruleset       *ruleset;
 297         struct pf_rule          *rule;
 298         int                      rs_num;
 299
 300         ruleset = pf_find_ruleset(anchor);
 301         if (ruleset == NULL)
 302                 return (NULL);
 303         rs_num = pf_get_ruleset_number(rule_action);
 304         if (rs_num >= PF_RULESET_MAX)
 305                 return (NULL);
 306         if (active) {
 307                 if (check_ticket && ticket !=
 308                     ruleset->rules[rs_num].active.ticket)
 309                         return (NULL);
 310                 if (r_last)
 311                         rule = TAILQ_LAST(ruleset->rules[rs_num].active.ptr,
 312                             pf_rulequeue);
 313                 else
 314                         rule = TAILQ_FIRST(ruleset->rules[rs_num].active.ptr);
 315         } else {
 316                 if (check_ticket && ticket !=
 317                     ruleset->rules[rs_num].inactive.ticket)
 318                         return (NULL);
 319                 if (r_last)
 320                         rule = TAILQ_LAST(ruleset->rules[rs_num].inactive.ptr,
 321                             pf_rulequeue);
 322                 else
 323                         rule = TAILQ_FIRST(ruleset->rules[rs_num].inactive.ptr);
 324         }
 325         if (!r_last) {
 326                 while ((rule != NULL) && (rule->nr != rule_number))
 327                         rule = TAILQ_NEXT(rule, entries);
 328         }
 329         if (rule == NULL)
 330                 return (NULL);
 331
 332         return (&rule->rpool);
 333 }
 334
 335 static void
 336 pf_mv_pool(struct pf_palist *poola, struct pf_palist *poolb)
 337 {
 338         struct pf_pooladdr      *mv_pool_pa;
 339
 340         while ((mv_pool_pa = TAILQ_FIRST(poola)) != NULL) {
 341                 TAILQ_REMOVE(poola, mv_pool_pa, entries);
 342                 TAILQ_INSERT_TAIL(poolb, mv_pool_pa, entries);
 343         }
 344 }
 345
 346 static void
 347 pf_empty_pool(struct pf_palist *poola)
 348 {
 349         struct pf_pooladdr *pa;
 350
 351         while ((pa = TAILQ_FIRST(poola)) != NULL) {
 352                 switch (pa->addr.type) {
 353                 case PF_ADDR_DYNIFTL:
 354                         pfi_dynaddr_remove(pa->addr.p.dyn);
 355                         break;
 356                 case PF_ADDR_TABLE:
 357                         /* XXX: this could be unfinished pooladdr on pabuf */
 358                         if (pa->addr.p.tbl != NULL)
 359                                 pfr_detach_table(pa->addr.p.tbl);
 360                         break;
 361                 }
 362                 if (pa->kif)
 363                         pfi_kif_unref(pa->kif);
 364                 TAILQ_REMOVE(poola, pa, entries);
 365                 free(pa, M_PFRULE);
 366         }
 367 }
 368
 369 static void
 370 pf_unlink_rule(struct pf_rulequeue *rulequeue, struct pf_rule *rule)
 371 {
 372
 373         PF_RULES_WASSERT();
 374
 375         TAILQ_REMOVE(rulequeue, rule, entries);
 376
 377         PF_UNLNKDRULES_LOCK();
 378         rule->rule_flag |= PFRULE_REFS;
 379         TAILQ_INSERT_TAIL(&V_pf_unlinked_rules, rule, entries);
 380         PF_UNLNKDRULES_UNLOCK();
 381 }
 382
 383 void
 384 pf_free_rule(struct pf_rule *rule)
 385 {
 386
 387         PF_RULES_WASSERT();
 388
 389         if (rule->tag)
 390                 tag_unref(&V_pf_tags, rule->tag);
 391         if (rule->match_tag)
 392                 tag_unref(&V_pf_tags, rule->match_tag);
 393 #ifdef ALTQ
 394         if (rule->pqid != rule->qid)
 395                 pf_qid_unref(rule->pqid);
 396         pf_qid_unref(rule->qid);
 397 #endif
 398         switch (rule->src.addr.type) {
 399         case PF_ADDR_DYNIFTL:
 400                 pfi_dynaddr_remove(rule->src.addr.p.dyn);
 401                 break;
 402         case PF_ADDR_TABLE:
 403                 pfr_detach_table(rule->src.addr.p.tbl);
 404                 break;
 405         }
 406         switch (rule->dst.addr.type) {
 407         case PF_ADDR_DYNIFTL:
 408                 pfi_dynaddr_remove(rule->dst.addr.p.dyn);
 409                 break;
 410         case PF_ADDR_TABLE:
 411                 pfr_detach_table(rule->dst.addr.p.tbl);
 412                 break;
 413         }
 414         if (rule->overload_tbl)
 415                 pfr_detach_table(rule->overload_tbl);
 416         if (rule->kif)
 417                 pfi_kif_unref(rule->kif);
 418         pf_anchor_remove(rule);
 419         pf_empty_pool(&rule->rpool.list);
 420         counter_u64_free(rule->states_cur);
 421         counter_u64_free(rule->states_tot);
 422         counter_u64_free(rule->src_nodes);
 423         free(rule, M_PFRULE);
 424 }
 425
 426 static u_int16_t
 427 tagname2tag(struct pf_tags *head, char *tagname)
 428 {
 429         struct pf_tagname       *tag, *p = NULL;
 430         u_int16_t                new_tagid = 1;
 431
 432         PF_RULES_WASSERT();
 433
 434         TAILQ_FOREACH(tag, head, entries)
 435                 if (strcmp(tagname, tag->name) == 0) {
 436                         tag->ref++;
 437                         return (tag->tag);
 438                 }
 439
 440         /*
 441          * to avoid fragmentation, we do a linear search from the beginning
 442          * and take the first free slot we find. if there is none or the list
 443          * is empty, append a new entry at the end.
 444          */
 445
 446         /* new entry */
 447         if (!TAILQ_EMPTY(head))
 448                 for (p = TAILQ_FIRST(head); p != NULL &&
 449                     p->tag == new_tagid; p = TAILQ_NEXT(p, entries))
 450                         new_tagid = p->tag + 1;
 451
 452         if (new_tagid > TAGID_MAX)
 453                 return (0);
 454
 455         /* allocate and fill new struct pf_tagname */
 456         tag = malloc(sizeof(*tag), M_PFTAG, M_NOWAIT|M_ZERO);
 457         if (tag == NULL)
 458                 return (0);
 459         strlcpy(tag->name, tagname, sizeof(tag->name));
 460         tag->tag = new_tagid;
 461         tag->ref++;
 462
 463         if (p != NULL)  /* insert new entry before p */
 464                 TAILQ_INSERT_BEFORE(p, tag, entries);
 465         else    /* either list empty or no free slot in between */
 466                 TAILQ_INSERT_TAIL(head, tag, entries);
 467
 468         return (tag->tag);
 469 }
 470
 471 static void
 472 tag_unref(struct pf_tags *head, u_int16_t tag)
 473 {
 474         struct pf_tagname       *p, *next;
 475
 476         PF_RULES_WASSERT();
 477
 478         for (p = TAILQ_FIRST(head); p != NULL; p = next) {
 479                 next = TAILQ_NEXT(p, entries);
 480                 if (tag == p->tag) {
 481                         if (--p->ref == 0) {
 482                                 TAILQ_REMOVE(head, p, entries);
 483                                 free(p, M_PFTAG);
 484                         }
 485                         break;
 486                 }
 487         }
 488 }
 489
 490 static u_int16_t
 491 pf_tagname2tag(char *tagname)
 492 {
 493         return (tagname2tag(&V_pf_tags, tagname));
 494 }
 495
 496 #ifdef ALTQ
 497 static u_int32_t
 498 pf_qname2qid(char *qname)
 499 {
 500         return ((u_int32_t)tagname2tag(&V_pf_qids, qname));
 501 }
 502
 503 static void
 504 pf_qid_unref(u_int32_t qid)
 505 {
 506         tag_unref(&V_pf_qids, (u_int16_t)qid);
 507 }
 508
 509 static int
 510 pf_begin_altq(u_int32_t *ticket)
 511 {
 512         struct pf_altq  *altq;
 513         int              error = 0;
 514
 515         PF_RULES_WASSERT();
 516
 517         /* Purge the old altq list */
 518         while ((altq = TAILQ_FIRST(V_pf_altqs_inactive)) != NULL) {
 519                 TAILQ_REMOVE(V_pf_altqs_inactive, altq, entries);
 520                 if (altq->qname[0] == 0 &&
 521                     (altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) {
 522                         /* detach and destroy the discipline */
 523                         error = altq_remove(altq);
 524                 } else
 525                         pf_qid_unref(altq->qid);
 526                 free(altq, M_PFALTQ);
 527         }
 528         if (error)
 529                 return (error);
 530         *ticket = ++V_ticket_altqs_inactive;
 531         V_altqs_inactive_open = 1;
 532         return (0);
 533 }
 534
 535 static int
 536 pf_rollback_altq(u_int32_t ticket)
 537 {
 538         struct pf_altq  *altq;
 539         int              error = 0;
 540
 541         PF_RULES_WASSERT();
 542
 543         if (!V_altqs_inactive_open || ticket != V_ticket_altqs_inactive)
 544                 return (0);
 545         /* Purge the old altq list */
 546         while ((altq = TAILQ_FIRST(V_pf_altqs_inactive)) != NULL) {
 547                 TAILQ_REMOVE(V_pf_altqs_inactive, altq, entries);
 548                 if (altq->qname[0] == 0 &&
 549                    (altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) {
 550                         /* detach and destroy the discipline */
 551                         error = altq_remove(altq);
 552                 } else
 553                         pf_qid_unref(altq->qid);
 554                 free(altq, M_PFALTQ);
 555         }
 556         V_altqs_inactive_open = 0;
 557         return (error);
 558 }
 559
 560 static int
 561 pf_commit_altq(u_int32_t ticket)
 562 {
 563         struct pf_altqqueue     *old_altqs;
 564         struct pf_altq          *altq;
 565         int                      err, error = 0;
 566
 567         PF_RULES_WASSERT();
 568
 569         if (!V_altqs_inactive_open || ticket != V_ticket_altqs_inactive)
 570                 return (EBUSY);
 571
 572         /* swap altqs, keep the old. */
 573         old_altqs = V_pf_altqs_active;
 574         V_pf_altqs_active = V_pf_altqs_inactive;
 575         V_pf_altqs_inactive = old_altqs;
 576         V_ticket_altqs_active = V_ticket_altqs_inactive;
 577
 578         /* Attach new disciplines */
 579         TAILQ_FOREACH(altq, V_pf_altqs_active, entries) {
 580         if (altq->qname[0] == 0 &&
 581            (altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) {
 582                         /* attach the discipline */
 583                         error = altq_pfattach(altq);
 584                         if (error == 0 && V_pf_altq_running)
 585                                 error = pf_enable_altq(altq);
 586                         if (error != 0)
 587                                 return (error);
 588                 }
 589         }
 590
 591         /* Purge the old altq list */
 592         while ((altq = TAILQ_FIRST(V_pf_altqs_inactive)) != NULL) {
 593                 TAILQ_REMOVE(V_pf_altqs_inactive, altq, entries);
 594                 if (altq->qname[0] == 0 &&
 595                     (altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) {
 596                         /* detach and destroy the discipline */
 597                         if (V_pf_altq_running)
 598                                 error = pf_disable_altq(altq);
 599                         err = altq_pfdetach(altq);
 600                         if (err != 0 && error == 0)
 601                                 error = err;
 602                         err = altq_remove(altq);
 603                         if (err != 0 && error == 0)
 604                                 error = err;
 605                 } else
 606                         pf_qid_unref(altq->qid);
 607                 free(altq, M_PFALTQ);
 608         }
 609
 610         V_altqs_inactive_open = 0;
 611         return (error);
 612 }
 613
 614 static int
 615 pf_enable_altq(struct pf_altq *altq)
 616 {
 617         struct ifnet            *ifp;
 618         struct tb_profile        tb;
 619         int                      error = 0;
 620
 621         if ((ifp = ifunit(altq->ifname)) == NULL)
 622                 return (EINVAL);
 623
 624         if (ifp->if_snd.altq_type != ALTQT_NONE)
 625                 error = altq_enable(&ifp->if_snd);
 626
 627         /* set tokenbucket regulator */
 628         if (error == 0 && ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) {
 629                 tb.rate = altq->ifbandwidth;
 630                 tb.depth = altq->tbrsize;
 631                 error = tbr_set(&ifp->if_snd, &tb);
 632         }
 633
 634         return (error);
 635 }
 636
 637 static int
 638 pf_disable_altq(struct pf_altq *altq)
 639 {
 640         struct ifnet            *ifp;
 641         struct tb_profile        tb;
 642         int                      error;
 643
 644         if ((ifp = ifunit(altq->ifname)) == NULL)
 645                 return (EINVAL);
 646
 647         /*
 648          * when the discipline is no longer referenced, it was overridden
 649          * by a new one.  if so, just return.
 650          */
 651         if (altq->altq_disc != ifp->if_snd.altq_disc)
 652                 return (0);
 653
 654         error = altq_disable(&ifp->if_snd);
 655
 656         if (error == 0) {
 657                 /* clear tokenbucket regulator */
 658                 tb.rate = 0;
 659                 error = tbr_set(&ifp->if_snd, &tb);
 660         }
 661
 662         return (error);
 663 }
 664
 665 void
 666 pf_altq_ifnet_event(struct ifnet *ifp, int remove)
 667 {
 668         struct ifnet    *ifp1;
 669         struct pf_altq  *a1, *a2, *a3;
 670         u_int32_t        ticket;
 671         int              error = 0;
 672
 673         /* Interrupt userland queue modifications */
 674         if (V_altqs_inactive_open)
 675                 pf_rollback_altq(V_ticket_altqs_inactive);
 676
 677         /* Start new altq ruleset */
 678         if (pf_begin_altq(&ticket))
 679                 return;
 680
 681         /* Copy the current active set */
 682         TAILQ_FOREACH(a1, V_pf_altqs_active, entries) {
 683                 a2 = malloc(sizeof(*a2), M_PFALTQ, M_NOWAIT);
 684                 if (a2 == NULL) {
 685                         error = ENOMEM;
 686                         break;
 687                 }
 688                 bcopy(a1, a2, sizeof(struct pf_altq));
 689
 690                 if (a2->qname[0] != 0) {
 691                         if ((a2->qid = pf_qname2qid(a2->qname)) == 0) {
 692                                 error = EBUSY;
 693                                 free(a2, M_PFALTQ);
 694                                 break;
 695                         }
 696                         a2->altq_disc = NULL;
 697                         TAILQ_FOREACH(a3, V_pf_altqs_inactive, entries) {
 698                                 if (strncmp(a3->ifname, a2->ifname,
 699                                     IFNAMSIZ) == 0 && a3->qname[0] == 0) {
 700                                         a2->altq_disc = a3->altq_disc;
 701                                         break;
 702                                 }
 703                         }
 704                 }
 705                 /* Deactivate the interface in question */
 706                 a2->local_flags &= ~PFALTQ_FLAG_IF_REMOVED;
 707                 if ((ifp1 = ifunit(a2->ifname)) == NULL ||
 708                     (remove && ifp1 == ifp)) {
 709                         a2->local_flags |= PFALTQ_FLAG_IF_REMOVED;
 710                 } else {
 711                         error = altq_add(a2);
 712
 713                         if (ticket != V_ticket_altqs_inactive)
 714                                 error = EBUSY;
 715
 716                         if (error) {
 717                                 free(a2, M_PFALTQ);
 718                                 break;
 719                         }
 720                 }
 721
 722                 TAILQ_INSERT_TAIL(V_pf_altqs_inactive, a2, entries);
 723         }
 724
 725         if (error != 0)
 726                 pf_rollback_altq(ticket);
 727         else
 728                 pf_commit_altq(ticket);
 729 }
 730 #endif /* ALTQ */
 731
 732 static int
 733 pf_begin_rules(u_int32_t *ticket, int rs_num, const char *anchor)
 734 {
 735         struct pf_ruleset       *rs;
 736         struct pf_rule          *rule;
 737
 738         PF_RULES_WASSERT();
 739
 740         if (rs_num < 0 || rs_num >= PF_RULESET_MAX)
 741                 return (EINVAL);
 742         rs = pf_find_or_create_ruleset(anchor);
 743         if (rs == NULL)
 744                 return (EINVAL);
 745         while ((rule = TAILQ_FIRST(rs->rules[rs_num].inactive.ptr)) != NULL) {
 746                 pf_unlink_rule(rs->rules[rs_num].inactive.ptr, rule);
 747                 rs->rules[rs_num].inactive.rcount--;
 748         }
 749         *ticket = ++rs->rules[rs_num].inactive.ticket;
 750         rs->rules[rs_num].inactive.open = 1;
 751         return (0);
 752 }
 753
 754 static int
 755 pf_rollback_rules(u_int32_t ticket, int rs_num, char *anchor)
 756 {
 757         struct pf_ruleset       *rs;
 758         struct pf_rule          *rule;
 759
 760         PF_RULES_WASSERT();
 761
 762         if (rs_num < 0 || rs_num >= PF_RULESET_MAX)
 763                 return (EINVAL);
 764         rs = pf_find_ruleset(anchor);
 765         if (rs == NULL || !rs->rules[rs_num].inactive.open ||
 766             rs->rules[rs_num].inactive.ticket != ticket)
 767                 return (0);
 768         while ((rule = TAILQ_FIRST(rs->rules[rs_num].inactive.ptr)) != NULL) {
 769                 pf_unlink_rule(rs->rules[rs_num].inactive.ptr, rule);
 770                 rs->rules[rs_num].inactive.rcount--;
 771         }
 772         rs->rules[rs_num].inactive.open = 0;
 773         return (0);
 774 }
 775
 776 #define PF_MD5_UPD(st, elm)                                             \
 777                 MD5Update(ctx, (u_int8_t *) &(st)->elm, sizeof((st)->elm))
 778
 779 #define PF_MD5_UPD_STR(st, elm)                                         \
 780                 MD5Update(ctx, (u_int8_t *) (st)->elm, strlen((st)->elm))
 781
 782 #define PF_MD5_UPD_HTONL(st, elm, stor) do {                            \
 783                 (stor) = htonl((st)->elm);                              \
 784                 MD5Update(ctx, (u_int8_t *) &(stor), sizeof(u_int32_t));\
 785 } while (0)
 786
 787 #define PF_MD5_UPD_HTONS(st, elm, stor) do {                            \
 788                 (stor) = htons((st)->elm);                              \
 789                 MD5Update(ctx, (u_int8_t *) &(stor), sizeof(u_int16_t));\
 790 } while (0)
 791
 792 static void
 793 pf_hash_rule_addr(MD5_CTX *ctx, struct pf_rule_addr *pfr)
 794 {
 795         PF_MD5_UPD(pfr, addr.type);
 796         switch (pfr->addr.type) {
 797                 case PF_ADDR_DYNIFTL:
 798                         PF_MD5_UPD(pfr, addr.v.ifname);
 799                         PF_MD5_UPD(pfr, addr.iflags);
 800                         break;
 801                 case PF_ADDR_TABLE:
 802                         PF_MD5_UPD(pfr, addr.v.tblname);
 803                         break;
 804                 case PF_ADDR_ADDRMASK:
 805                         /* XXX ignore af? */
 806                         PF_MD5_UPD(pfr, addr.v.a.addr.addr32);
 807                         PF_MD5_UPD(pfr, addr.v.a.mask.addr32);
 808                         break;
 809         }
 810
 811         PF_MD5_UPD(pfr, port[0]);
 812         PF_MD5_UPD(pfr, port[1]);
 813         PF_MD5_UPD(pfr, neg);
 814         PF_MD5_UPD(pfr, port_op);
 815 }
 816
 817 static void
 818 pf_hash_rule(MD5_CTX *ctx, struct pf_rule *rule)
 819 {
 820         u_int16_t x;
 821         u_int32_t y;
 822
 823         pf_hash_rule_addr(ctx, &rule->src);
 824         pf_hash_rule_addr(ctx, &rule->dst);
 825         PF_MD5_UPD_STR(rule, label);
 826         PF_MD5_UPD_STR(rule, ifname);
 827         PF_MD5_UPD_STR(rule, match_tagname);
 828         PF_MD5_UPD_HTONS(rule, match_tag, x); /* dup? */
 829         PF_MD5_UPD_HTONL(rule, os_fingerprint, y);
 830         PF_MD5_UPD_HTONL(rule, prob, y);
 831         PF_MD5_UPD_HTONL(rule, uid.uid[0], y);
 832         PF_MD5_UPD_HTONL(rule, uid.uid[1], y);
 833         PF_MD5_UPD(rule, uid.op);
 834         PF_MD5_UPD_HTONL(rule, gid.gid[0], y);
 835         PF_MD5_UPD_HTONL(rule, gid.gid[1], y);
 836         PF_MD5_UPD(rule, gid.op);
 837         PF_MD5_UPD_HTONL(rule, rule_flag, y);
 838         PF_MD5_UPD(rule, action);
 839         PF_MD5_UPD(rule, direction);
 840         PF_MD5_UPD(rule, af);
 841         PF_MD5_UPD(rule, quick);
 842         PF_MD5_UPD(rule, ifnot);
 843         PF_MD5_UPD(rule, match_tag_not);
 844         PF_MD5_UPD(rule, natpass);
 845         PF_MD5_UPD(rule, keep_state);
 846         PF_MD5_UPD(rule, proto);
 847         PF_MD5_UPD(rule, type);
 848         PF_MD5_UPD(rule, code);
 849         PF_MD5_UPD(rule, flags);
 850         PF_MD5_UPD(rule, flagset);
 851         PF_MD5_UPD(rule, allow_opts);
 852         PF_MD5_UPD(rule, rt);
 853         PF_MD5_UPD(rule, tos);
 854 }
 855
 856 static int
 857 pf_commit_rules(u_int32_t ticket, int rs_num, char *anchor)
 858 {
 859         struct pf_ruleset       *rs;
 860         struct pf_rule          *rule, **old_array;
 861         struct pf_rulequeue     *old_rules;
 862         int                      error;
 863         u_int32_t                old_rcount;
 864
 865         PF_RULES_WASSERT();
 866
 867         if (rs_num < 0 || rs_num >= PF_RULESET_MAX)
 868                 return (EINVAL);
 869         rs = pf_find_ruleset(anchor);
 870         if (rs == NULL || !rs->rules[rs_num].inactive.open ||
 871             ticket != rs->rules[rs_num].inactive.ticket)
 872                 return (EBUSY);
 873
 874         /* Calculate checksum for the main ruleset */
 875         if (rs == &pf_main_ruleset) {
 876                 error = pf_setup_pfsync_matching(rs);
 877                 if (error != 0)
 878                         return (error);
 879         }
 880
 881         /* Swap rules, keep the old. */
 882         old_rules = rs->rules[rs_num].active.ptr;
 883         old_rcount = rs->rules[rs_num].active.rcount;
 884         old_array = rs->rules[rs_num].active.ptr_array;
 885
 886         rs->rules[rs_num].active.ptr =
 887             rs->rules[rs_num].inactive.ptr;
 888         rs->rules[rs_num].active.ptr_array =
 889             rs->rules[rs_num].inactive.ptr_array;
 890         rs->rules[rs_num].active.rcount =
 891             rs->rules[rs_num].inactive.rcount;
 892         rs->rules[rs_num].inactive.ptr = old_rules;
 893         rs->rules[rs_num].inactive.ptr_array = old_array;
 894         rs->rules[rs_num].inactive.rcount = old_rcount;
 895
 896         rs->rules[rs_num].active.ticket =
 897             rs->rules[rs_num].inactive.ticket;
 898         pf_calc_skip_steps(rs->rules[rs_num].active.ptr);
 899
 900
 901         /* Purge the old rule list. */
 902         while ((rule = TAILQ_FIRST(old_rules)) != NULL)
 903                 pf_unlink_rule(old_rules, rule);
 904         if (rs->rules[rs_num].inactive.ptr_array)
 905                 free(rs->rules[rs_num].inactive.ptr_array, M_TEMP);
 906         rs->rules[rs_num].inactive.ptr_array = NULL;
 907         rs->rules[rs_num].inactive.rcount = 0;
 908         rs->rules[rs_num].inactive.open = 0;
 909         pf_remove_if_empty_ruleset(rs);
 910
 911         return (0);
 912 }
 913
 914 static int
 915 pf_setup_pfsync_matching(struct pf_ruleset *rs)
 916 {
 917         MD5_CTX                  ctx;
 918         struct pf_rule          *rule;
 919         int                      rs_cnt;
 920         u_int8_t                 digest[PF_MD5_DIGEST_LENGTH];
 921
 922         MD5Init(&ctx);
 923         for (rs_cnt = 0; rs_cnt < PF_RULESET_MAX; rs_cnt++) {
 924                 /* XXX PF_RULESET_SCRUB as well? */
 925                 if (rs_cnt == PF_RULESET_SCRUB)
 926                         continue;
 927
 928                 if (rs->rules[rs_cnt].inactive.ptr_array)
 929                         free(rs->rules[rs_cnt].inactive.ptr_array, M_TEMP);
 930                 rs->rules[rs_cnt].inactive.ptr_array = NULL;
 931
 932                 if (rs->rules[rs_cnt].inactive.rcount) {
 933                         rs->rules[rs_cnt].inactive.ptr_array =
 934                             malloc(sizeof(caddr_t) *
 935                             rs->rules[rs_cnt].inactive.rcount,
 936                             M_TEMP, M_NOWAIT);
 937
 938                         if (!rs->rules[rs_cnt].inactive.ptr_array)
 939                                 return (ENOMEM);
 940                 }
 941
 942                 TAILQ_FOREACH(rule, rs->rules[rs_cnt].inactive.ptr,
 943                     entries) {
 944                         pf_hash_rule(&ctx, rule);
 945                         (rs->rules[rs_cnt].inactive.ptr_array)[rule->nr] = rule;
 946                 }
 947         }
 948
 949         MD5Final(digest, &ctx);
 950         memcpy(V_pf_status.pf_chksum, digest, sizeof(V_pf_status.pf_chksum));
 951         return (0);
 952 }
 953
 954 static int
 955 pf_addr_setup(struct pf_ruleset *ruleset, struct pf_addr_wrap *addr,
 956     sa_family_t af)
 957 {
 958         int error = 0;
 959
 960         switch (addr->type) {
 961         case PF_ADDR_TABLE:
 962                 addr->p.tbl = pfr_attach_table(ruleset, addr->v.tblname);
 963                 if (addr->p.tbl == NULL)
 964                         error = ENOMEM;
 965                 break;
 966         case PF_ADDR_DYNIFTL:
 967                 error = pfi_dynaddr_setup(addr, af);
 968                 break;
 969         }
 970
 971         return (error);
 972 }
 973
 974 static void
 975 pf_addr_copyout(struct pf_addr_wrap *addr)
 976 {
 977
 978         switch (addr->type) {
 979         case PF_ADDR_DYNIFTL:
 980                 pfi_dynaddr_copyout(addr);
 981                 break;
 982         case PF_ADDR_TABLE:
 983                 pf_tbladdr_copyout(addr);
 984                 break;
 985         }
 986 }
 987
 988 static int
 989 pfioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags, struct thread *td)
 990 {
 991         int                      error = 0;
 992
 993         /* XXX keep in sync with switch() below */
 994         if (securelevel_gt(td->td_ucred, 2))
 995                 switch (cmd) {
 996                 case DIOCGETRULES:
 997                 case DIOCGETRULE:
 998                 case DIOCGETADDRS:
 999                 case DIOCGETADDR:
1000                 case DIOCGETSTATE:
1001                 case DIOCSETSTATUSIF:
1002                 case DIOCGETSTATUS:
1003                 case DIOCCLRSTATUS:
1004                 case DIOCNATLOOK:
1005                 case DIOCSETDEBUG:
1006                 case DIOCGETSTATES:
1007                 case DIOCGETTIMEOUT:
1008                 case DIOCCLRRULECTRS:
1009                 case DIOCGETLIMIT:
1010                 case DIOCGETALTQS:
1011                 case DIOCGETALTQ:
1012                 case DIOCGETQSTATS:
1013                 case DIOCGETRULESETS:
1014                 case DIOCGETRULESET:
1015                 case DIOCRGETTABLES:
1016                 case DIOCRGETTSTATS:
1017                 case DIOCRCLRTSTATS:
1018                 case DIOCRCLRADDRS:
1019                 case DIOCRADDADDRS:
1020                 case DIOCRDELADDRS:
1021                 case DIOCRSETADDRS:
1022                 case DIOCRGETADDRS:
1023                 case DIOCRGETASTATS:
1024                 case DIOCRCLRASTATS:
1025                 case DIOCRTSTADDRS:
1026                 case DIOCOSFPGET:
1027                 case DIOCGETSRCNODES:
1028                 case DIOCCLRSRCNODES:
1029                 case DIOCIGETIFACES:
1030                 case DIOCGIFSPEED:
1031                 case DIOCSETIFFLAG:
1032                 case DIOCCLRIFFLAG:
1033                         break;
1034                 case DIOCRCLRTABLES:
1035                 case DIOCRADDTABLES:
1036                 case DIOCRDELTABLES:
1037                 case DIOCRSETTFLAGS:
1038                         if (((struct pfioc_table *)addr)->pfrio_flags &
1039                             PFR_FLAG_DUMMY)
1040                                 break; /* dummy operation ok */
1041                         return (EPERM);
1042                 default:
1043                         return (EPERM);
1044                 }
1045
1046         if (!(flags & FWRITE))
1047                 switch (cmd) {
1048                 case DIOCGETRULES:
1049                 case DIOCGETADDRS:
1050                 case DIOCGETADDR:
1051                 case DIOCGETSTATE:
1052                 case DIOCGETSTATUS:
1053                 case DIOCGETSTATES:
1054                 case DIOCGETTIMEOUT:
1055                 case DIOCGETLIMIT:
1056                 case DIOCGETALTQS:
1057                 case DIOCGETALTQ:
1058                 case DIOCGETQSTATS:
1059                 case DIOCGETRULESETS:
1060                 case DIOCGETRULESET:
1061                 case DIOCNATLOOK:
1062                 case DIOCRGETTABLES:
1063                 case DIOCRGETTSTATS:
1064                 case DIOCRGETADDRS:
1065                 case DIOCRGETASTATS:
1066                 case DIOCRTSTADDRS:
1067                 case DIOCOSFPGET:
1068                 case DIOCGETSRCNODES:
1069                 case DIOCIGETIFACES:
1070                 case DIOCGIFSPEED:
1071                         break;
1072                 case DIOCRCLRTABLES:
1073                 case DIOCRADDTABLES:
1074                 case DIOCRDELTABLES:
1075                 case DIOCRCLRTSTATS:
1076                 case DIOCRCLRADDRS:
1077                 case DIOCRADDADDRS:
1078                 case DIOCRDELADDRS:
1079                 case DIOCRSETADDRS:
1080                 case DIOCRSETTFLAGS:
1081                         if (((struct pfioc_table *)addr)->pfrio_flags &
1082                             PFR_FLAG_DUMMY) {
1083                                 flags |= FWRITE; /* need write lock for dummy */
1084                                 break; /* dummy operation ok */
1085                         }
1086                         return (EACCES);
1087                 case DIOCGETRULE:
1088                         if (((struct pfioc_rule *)addr)->action ==
1089                             PF_GET_CLR_CNTR)
1090                                 return (EACCES);
1091                         break;
1092                 default:
1093                         return (EACCES);
1094                 }
1095
1096         CURVNET_SET(TD_TO_VNET(td));
1097
1098         switch (cmd) {
1099         case DIOCSTART:
1100                 sx_xlock(&pf_ioctl_lock);
1101                 if (V_pf_status.running)
1102                         error = EEXIST;
1103                 else {
1104                         int cpu;
1105
1106                         error = hook_pf();
1107                         if (error) {
1108                                 DPFPRINTF(PF_DEBUG_MISC,
1109                                     ("pf: pfil registration failed\n"));
1110                                 break;
1111                         }
1112                         V_pf_status.running = 1;
1113                         V_pf_status.since = time_second;
1114
1115                         CPU_FOREACH(cpu)
1116                                 V_pf_stateid[cpu] = time_second;
1117
1118                         DPFPRINTF(PF_DEBUG_MISC, ("pf: started\n"));
1119                 }
1120                 break;
1121
1122         case DIOCSTOP:
1123                 sx_xlock(&pf_ioctl_lock);
1124                 if (!V_pf_status.running)
1125                         error = ENOENT;
1126                 else {
1127                         V_pf_status.running = 0;
1128                         error = dehook_pf();
1129                         if (error) {
1130                                 V_pf_status.running = 1;
1131                                 DPFPRINTF(PF_DEBUG_MISC,
1132                                     ("pf: pfil unregistration failed\n"));
1133                         }
1134                         V_pf_status.since = time_second;
1135                         DPFPRINTF(PF_DEBUG_MISC, ("pf: stopped\n"));
1136                 }
1137                 break;
1138
1139         case DIOCADDRULE: {
1140                 struct pfioc_rule       *pr = (struct pfioc_rule *)addr;
1141                 struct pf_ruleset       *ruleset;
1142                 struct pf_rule          *rule, *tail;
1143                 struct pf_pooladdr      *pa;
1144                 struct pfi_kif          *kif = NULL;
1145                 int                      rs_num;
1146
1147                 if (pr->rule.return_icmp >> 8 > ICMP_MAXTYPE) {
1148                         error = EINVAL;
1149                         break;
1150                 }
1151 #ifndef INET
1152                 if (pr->rule.af == AF_INET) {
1153                         error = EAFNOSUPPORT;
1154                         break;
1155                 }
1156 #endif /* INET */
1157 #ifndef INET6
1158                 if (pr->rule.af == AF_INET6) {
1159                         error = EAFNOSUPPORT;
1160                         break;
1161                 }
1162 #endif /* INET6 */
1163
1164                 rule = malloc(sizeof(*rule), M_PFRULE, M_WAITOK);
1165                 bcopy(&pr->rule, rule, sizeof(struct pf_rule));
1166                 if (rule->ifname[0])
1167                         kif = malloc(sizeof(*kif), PFI_MTYPE, M_WAITOK);
1168                 rule->states_cur = counter_u64_alloc(M_WAITOK);
1169                 rule->states_tot = counter_u64_alloc(M_WAITOK);
1170                 rule->src_nodes = counter_u64_alloc(M_WAITOK);
1171                 rule->cuid = td->td_ucred->cr_ruid;
1172                 rule->cpid = td->td_proc ? td->td_proc->p_pid : 0;
1173                 TAILQ_INIT(&rule->rpool.list);
1174
1175 #define ERROUT(x)       { error = (x); goto DIOCADDRULE_error; }
1176
1177                 PF_RULES_WLOCK();
1178                 pr->anchor[sizeof(pr->anchor) - 1] = 0;
1179                 ruleset = pf_find_ruleset(pr->anchor);
1180                 if (ruleset == NULL)
1181                         ERROUT(EINVAL);
1182                 rs_num = pf_get_ruleset_number(pr->rule.action);
1183                 if (rs_num >= PF_RULESET_MAX)
1184                         ERROUT(EINVAL);
1185                 if (pr->ticket != ruleset->rules[rs_num].inactive.ticket) {
1186                         DPFPRINTF(PF_DEBUG_MISC,
1187                             ("ticket: %d != [%d]%d\n", pr->ticket, rs_num,
1188                             ruleset->rules[rs_num].inactive.ticket));
1189                         ERROUT(EBUSY);
1190                 }
1191                 if (pr->pool_ticket != V_ticket_pabuf) {
1192                         DPFPRINTF(PF_DEBUG_MISC,
1193                             ("pool_ticket: %d != %d\n", pr->pool_ticket,
1194                             V_ticket_pabuf));
1195                         ERROUT(EBUSY);
1196                 }
1197
1198                 tail = TAILQ_LAST(ruleset->rules[rs_num].inactive.ptr,
1199                     pf_rulequeue);
1200                 if (tail)
1201                         rule->nr = tail->nr + 1;
1202                 else
1203                         rule->nr = 0;
1204                 if (rule->ifname[0]) {
1205                         rule->kif = pfi_kif_attach(kif, rule->ifname);
1206                         pfi_kif_ref(rule->kif);
1207                 } else
1208                         rule->kif = NULL;
1209
1210                 if (rule->rtableid > 0 && rule->rtableid >= rt_numfibs)
1211                         error = EBUSY;
1212
1213 #ifdef ALTQ
1214                 /* set queue IDs */
1215                 if (rule->qname[0] != 0) {
1216                         if ((rule->qid = pf_qname2qid(rule->qname)) == 0)
1217                                 error = EBUSY;
1218                         else if (rule->pqname[0] != 0) {
1219                                 if ((rule->pqid =
1220                                     pf_qname2qid(rule->pqname)) == 0)
1221                                         error = EBUSY;
1222                         } else
1223                                 rule->pqid = rule->qid;
1224                 }
1225 #endif
1226                 if (rule->tagname[0])
1227                         if ((rule->tag = pf_tagname2tag(rule->tagname)) == 0)
1228                                 error = EBUSY;
1229                 if (rule->match_tagname[0])
1230                         if ((rule->match_tag =
1231                             pf_tagname2tag(rule->match_tagname)) == 0)
1232                                 error = EBUSY;
1233                 if (rule->rt && !rule->direction)
1234                         error = EINVAL;
1235                 if (!rule->log)
1236                         rule->logif = 0;
1237                 if (rule->logif >= PFLOGIFS_MAX)
1238                         error = EINVAL;
1239                 if (pf_addr_setup(ruleset, &rule->src.addr, rule->af))
1240                         error = ENOMEM;
1241                 if (pf_addr_setup(ruleset, &rule->dst.addr, rule->af))
1242                         error = ENOMEM;
1243                 if (pf_anchor_setup(rule, ruleset, pr->anchor_call))
1244                         error = EINVAL;
1245                 TAILQ_FOREACH(pa, &V_pf_pabuf, entries)
1246                         if (pa->addr.type == PF_ADDR_TABLE) {
1247                                 pa->addr.p.tbl = pfr_attach_table(ruleset,
1248                                     pa->addr.v.tblname);
1249                                 if (pa->addr.p.tbl == NULL)
1250                                         error = ENOMEM;
1251                         }
1252
1253                 if (rule->overload_tblname[0]) {
1254                         if ((rule->overload_tbl = pfr_attach_table(ruleset,
1255                             rule->overload_tblname)) == NULL)
1256                                 error = EINVAL;
1257                         else
1258                                 rule->overload_tbl->pfrkt_flags |=
1259                                     PFR_TFLAG_ACTIVE;
1260                 }
1261
1262                 pf_mv_pool(&V_pf_pabuf, &rule->rpool.list);
1263                 if (((((rule->action == PF_NAT) || (rule->action == PF_RDR) ||
1264                     (rule->action == PF_BINAT)) && rule->anchor == NULL) ||
1265                     (rule->rt > PF_FASTROUTE)) &&
1266                     (TAILQ_FIRST(&rule->rpool.list) == NULL))
1267                         error = EINVAL;
1268
1269                 if (error) {
1270                         pf_free_rule(rule);
1271                         PF_RULES_WUNLOCK();
1272                         break;
1273                 }
1274
1275                 rule->rpool.cur = TAILQ_FIRST(&rule->rpool.list);
1276                 rule->evaluations = rule->packets[0] = rule->packets[1] =
1277                     rule->bytes[0] = rule->bytes[1] = 0;
1278                 TAILQ_INSERT_TAIL(ruleset->rules[rs_num].inactive.ptr,
1279                     rule, entries);
1280                 ruleset->rules[rs_num].inactive.rcount++;
1281                 PF_RULES_WUNLOCK();
1282                 break;
1283
1284 #undef ERROUT
1285 DIOCADDRULE_error:
1286                 PF_RULES_WUNLOCK();
1287                 counter_u64_free(rule->states_cur);
1288                 counter_u64_free(rule->states_tot);
1289                 counter_u64_free(rule->src_nodes);
1290                 free(rule, M_PFRULE);
1291                 if (kif)
1292                         free(kif, PFI_MTYPE);
1293                 break;
1294         }
1295
1296         case DIOCGETRULES: {
1297                 struct pfioc_rule       *pr = (struct pfioc_rule *)addr;
1298                 struct pf_ruleset       *ruleset;
1299                 struct pf_rule          *tail;
1300                 int                      rs_num;
1301
1302                 PF_RULES_WLOCK();
1303                 pr->anchor[sizeof(pr->anchor) - 1] = 0;
1304                 ruleset = pf_find_ruleset(pr->anchor);
1305                 if (ruleset == NULL) {
1306                         PF_RULES_WUNLOCK();
1307                         error = EINVAL;
1308                         break;
1309                 }
1310                 rs_num = pf_get_ruleset_number(pr->rule.action);
1311                 if (rs_num >= PF_RULESET_MAX) {
1312                         PF_RULES_WUNLOCK();
1313                         error = EINVAL;
1314                         break;
1315                 }
1316                 tail = TAILQ_LAST(ruleset->rules[rs_num].active.ptr,
1317                     pf_rulequeue);
1318                 if (tail)
1319                         pr->nr = tail->nr + 1;
1320                 else
1321                         pr->nr = 0;
1322                 pr->ticket = ruleset->rules[rs_num].active.ticket;
1323                 PF_RULES_WUNLOCK();
1324                 break;
1325         }
1326
1327         case DIOCGETRULE: {
1328                 struct pfioc_rule       *pr = (struct pfioc_rule *)addr;
1329                 struct pf_ruleset       *ruleset;
1330                 struct pf_rule          *rule;
1331                 int                      rs_num, i;
1332
1333                 PF_RULES_WLOCK();
1334                 pr->anchor[sizeof(pr->anchor) - 1] = 0;
1335                 ruleset = pf_find_ruleset(pr->anchor);
1336                 if (ruleset == NULL) {
1337                         PF_RULES_WUNLOCK();
1338                         error = EINVAL;
1339                         break;
1340                 }
1341                 rs_num = pf_get_ruleset_number(pr->rule.action);
1342                 if (rs_num >= PF_RULESET_MAX) {
1343                         PF_RULES_WUNLOCK();
1344                         error = EINVAL;
1345                         break;
1346                 }
1347                 if (pr->ticket != ruleset->rules[rs_num].active.ticket) {
1348                         PF_RULES_WUNLOCK();
1349                         error = EBUSY;
1350                         break;
1351                 }
1352                 rule = TAILQ_FIRST(ruleset->rules[rs_num].active.ptr);
1353                 while ((rule != NULL) && (rule->nr != pr->nr))
1354                         rule = TAILQ_NEXT(rule, entries);
1355                 if (rule == NULL) {
1356                         PF_RULES_WUNLOCK();
1357                         error = EBUSY;
1358                         break;
1359                 }
1360                 bcopy(rule, &pr->rule, sizeof(struct pf_rule));
1361                 pr->rule.u_states_cur = counter_u64_fetch(rule->states_cur);
1362                 pr->rule.u_states_tot = counter_u64_fetch(rule->states_tot);
1363                 pr->rule.u_src_nodes = counter_u64_fetch(rule->src_nodes);
1364                 if (pf_anchor_copyout(ruleset, rule, pr)) {
1365                         PF_RULES_WUNLOCK();
1366                         error = EBUSY;
1367                         break;
1368                 }
1369                 pf_addr_copyout(&pr->rule.src.addr);
1370                 pf_addr_copyout(&pr->rule.dst.addr);
1371                 for (i = 0; i < PF_SKIP_COUNT; ++i)
1372                         if (rule->skip[i].ptr == NULL)
1373                                 pr->rule.skip[i].nr = -1;
1374                         else
1375                                 pr->rule.skip[i].nr =
1376                                     rule->skip[i].ptr->nr;
1377
1378                 if (pr->action == PF_GET_CLR_CNTR) {
1379                         rule->evaluations = 0;
1380                         rule->packets[0] = rule->packets[1] = 0;
1381                         rule->bytes[0] = rule->bytes[1] = 0;
1382                         counter_u64_zero(rule->states_tot);
1383                 }
1384                 PF_RULES_WUNLOCK();
1385                 break;
1386         }
1387
1388         case DIOCCHANGERULE: {
1389                 struct pfioc_rule       *pcr = (struct pfioc_rule *)addr;
1390                 struct pf_ruleset       *ruleset;
1391                 struct pf_rule          *oldrule = NULL, *newrule = NULL;
1392                 struct pfi_kif          *kif = NULL;
1393                 struct pf_pooladdr      *pa;
1394                 u_int32_t                nr = 0;
1395                 int                      rs_num;
1396
1397                 if (pcr->action < PF_CHANGE_ADD_HEAD ||
1398                     pcr->action > PF_CHANGE_GET_TICKET) {
1399                         error = EINVAL;
1400                         break;
1401                 }
1402                 if (pcr->rule.return_icmp >> 8 > ICMP_MAXTYPE) {
1403                         error = EINVAL;
1404                         break;
1405                 }
1406
1407                 if (pcr->action != PF_CHANGE_REMOVE) {
1408 #ifndef INET
1409                         if (pcr->rule.af == AF_INET) {
1410                                 error = EAFNOSUPPORT;
1411                                 break;
1412                         }
1413 #endif /* INET */
1414 #ifndef INET6
1415                         if (pcr->rule.af == AF_INET6) {
1416                                 error = EAFNOSUPPORT;
1417                                 break;
1418                         }
1419 #endif /* INET6 */
1420                         newrule = malloc(sizeof(*newrule), M_PFRULE, M_WAITOK);
1421                         bcopy(&pcr->rule, newrule, sizeof(struct pf_rule));
1422                         if (newrule->ifname[0])
1423                                 kif = malloc(sizeof(*kif), PFI_MTYPE, M_WAITOK);
1424                         newrule->states_cur = counter_u64_alloc(M_WAITOK);
1425                         newrule->states_tot = counter_u64_alloc(M_WAITOK);
1426                         newrule->src_nodes = counter_u64_alloc(M_WAITOK);
1427                         newrule->cuid = td->td_ucred->cr_ruid;
1428                         newrule->cpid = td->td_proc ? td->td_proc->p_pid : 0;
1429                         TAILQ_INIT(&newrule->rpool.list);
1430                 }
1431
1432 #define ERROUT(x)       { error = (x); goto DIOCCHANGERULE_error; }
1433
1434                 PF_RULES_WLOCK();
1435                 if (!(pcr->action == PF_CHANGE_REMOVE ||
1436                     pcr->action == PF_CHANGE_GET_TICKET) &&
1437                     pcr->pool_ticket != V_ticket_pabuf)
1438                         ERROUT(EBUSY);
1439
1440                 ruleset = pf_find_ruleset(pcr->anchor);
1441                 if (ruleset == NULL)
1442                         ERROUT(EINVAL);
1443
1444                 rs_num = pf_get_ruleset_number(pcr->rule.action);
1445                 if (rs_num >= PF_RULESET_MAX)
1446                         ERROUT(EINVAL);
1447
1448                 if (pcr->action == PF_CHANGE_GET_TICKET) {
1449                         pcr->ticket = ++ruleset->rules[rs_num].active.ticket;
1450                         ERROUT(0);
1451                 } else if (pcr->ticket !=
1452                             ruleset->rules[rs_num].active.ticket)
1453                                 ERROUT(EINVAL);
1454
1455                 if (pcr->action != PF_CHANGE_REMOVE) {
1456                         if (newrule->ifname[0]) {
1457                                 newrule->kif = pfi_kif_attach(kif,
1458                                     newrule->ifname);
1459                                 pfi_kif_ref(newrule->kif);
1460                         } else
1461                                 newrule->kif = NULL;
1462
1463                         if (newrule->rtableid > 0 &&
1464                             newrule->rtableid >= rt_numfibs)
1465                                 error = EBUSY;
1466
1467 #ifdef ALTQ
1468                         /* set queue IDs */
1469                         if (newrule->qname[0] != 0) {
1470                                 if ((newrule->qid =
1471                                     pf_qname2qid(newrule->qname)) == 0)
1472                                         error = EBUSY;
1473                                 else if (newrule->pqname[0] != 0) {
1474                                         if ((newrule->pqid =
1475                                             pf_qname2qid(newrule->pqname)) == 0)
1476                                                 error = EBUSY;
1477                                 } else
1478                                         newrule->pqid = newrule->qid;
1479                         }
1480 #endif /* ALTQ */
1481                         if (newrule->tagname[0])
1482                                 if ((newrule->tag =
1483                                     pf_tagname2tag(newrule->tagname)) == 0)
1484                                         error = EBUSY;
1485                         if (newrule->match_tagname[0])
1486                                 if ((newrule->match_tag = pf_tagname2tag(
1487                                     newrule->match_tagname)) == 0)
1488                                         error = EBUSY;
1489                         if (newrule->rt && !newrule->direction)
1490                                 error = EINVAL;
1491                         if (!newrule->log)
1492                                 newrule->logif = 0;
1493                         if (newrule->logif >= PFLOGIFS_MAX)
1494                                 error = EINVAL;
1495                         if (pf_addr_setup(ruleset, &newrule->src.addr, newrule->af))
1496                                 error = ENOMEM;
1497                         if (pf_addr_setup(ruleset, &newrule->dst.addr, newrule->af))
1498                                 error = ENOMEM;
1499                         if (pf_anchor_setup(newrule, ruleset, pcr->anchor_call))
1500                                 error = EINVAL;
1501                         TAILQ_FOREACH(pa, &V_pf_pabuf, entries)
1502                                 if (pa->addr.type == PF_ADDR_TABLE) {
1503                                         pa->addr.p.tbl =
1504                                             pfr_attach_table(ruleset,
1505                                             pa->addr.v.tblname);
1506                                         if (pa->addr.p.tbl == NULL)
1507                                                 error = ENOMEM;
1508                                 }
1509
1510                         if (newrule->overload_tblname[0]) {
1511                                 if ((newrule->overload_tbl = pfr_attach_table(
1512                                     ruleset, newrule->overload_tblname)) ==
1513                                     NULL)
1514                                         error = EINVAL;
1515                                 else
1516                                         newrule->overload_tbl->pfrkt_flags |=
1517                                             PFR_TFLAG_ACTIVE;
1518                         }
1519
1520                         pf_mv_pool(&V_pf_pabuf, &newrule->rpool.list);
1521                         if (((((newrule->action == PF_NAT) ||
1522                             (newrule->action == PF_RDR) ||
1523                             (newrule->action == PF_BINAT) ||
1524                             (newrule->rt > PF_FASTROUTE)) &&
1525                             !newrule->anchor)) &&
1526                             (TAILQ_FIRST(&newrule->rpool.list) == NULL))
1527                                 error = EINVAL;
1528
1529                         if (error) {
1530                                 pf_free_rule(newrule);
1531                                 PF_RULES_WUNLOCK();
1532                                 break;
1533                         }
1534
1535                         newrule->rpool.cur = TAILQ_FIRST(&newrule->rpool.list);
1536                         newrule->evaluations = 0;
1537                         newrule->packets[0] = newrule->packets[1] = 0;
1538                         newrule->bytes[0] = newrule->bytes[1] = 0;
1539                 }
1540                 pf_empty_pool(&V_pf_pabuf);
1541
1542                 if (pcr->action == PF_CHANGE_ADD_HEAD)
1543                         oldrule = TAILQ_FIRST(
1544                             ruleset->rules[rs_num].active.ptr);
1545                 else if (pcr->action == PF_CHANGE_ADD_TAIL)
1546                         oldrule = TAILQ_LAST(
1547                             ruleset->rules[rs_num].active.ptr, pf_rulequeue);
1548                 else {
1549                         oldrule = TAILQ_FIRST(
1550                             ruleset->rules[rs_num].active.ptr);
1551                         while ((oldrule != NULL) && (oldrule->nr != pcr->nr))
1552                                 oldrule = TAILQ_NEXT(oldrule, entries);
1553                         if (oldrule == NULL) {
1554                                 if (newrule != NULL)
1555                                         pf_free_rule(newrule);
1556                                 PF_RULES_WUNLOCK();
1557                                 error = EINVAL;
1558                                 break;
1559                         }
1560                 }
1561
1562                 if (pcr->action == PF_CHANGE_REMOVE) {
1563                         pf_unlink_rule(ruleset->rules[rs_num].active.ptr,
1564                             oldrule);
1565                         ruleset->rules[rs_num].active.rcount--;
1566                 } else {
1567                         if (oldrule == NULL)
1568                                 TAILQ_INSERT_TAIL(
1569                                     ruleset->rules[rs_num].active.ptr,
1570                                     newrule, entries);
1571                         else if (pcr->action == PF_CHANGE_ADD_HEAD ||
1572                             pcr->action == PF_CHANGE_ADD_BEFORE)
1573                                 TAILQ_INSERT_BEFORE(oldrule, newrule, entries);
1574                         else
1575                                 TAILQ_INSERT_AFTER(
1576                                     ruleset->rules[rs_num].active.ptr,
1577                                     oldrule, newrule, entries);
1578                         ruleset->rules[rs_num].active.rcount++;
1579                 }
1580
1581                 nr = 0;
1582                 TAILQ_FOREACH(oldrule,
1583                     ruleset->rules[rs_num].active.ptr, entries)
1584                         oldrule->nr = nr++;
1585
1586                 ruleset->rules[rs_num].active.ticket++;
1587
1588                 pf_calc_skip_steps(ruleset->rules[rs_num].active.ptr);
1589                 pf_remove_if_empty_ruleset(ruleset);
1590
1591                 PF_RULES_WUNLOCK();
1592                 break;
1593
1594 #undef ERROUT
1595 DIOCCHANGERULE_error:
1596                 PF_RULES_WUNLOCK();
1597                 if (newrule != NULL) {
1598                         counter_u64_free(newrule->states_cur);
1599                         counter_u64_free(newrule->states_tot);
1600                         counter_u64_free(newrule->src_nodes);
1601                         free(newrule, M_PFRULE);
1602                 }
1603                 if (kif != NULL)
1604                         free(kif, PFI_MTYPE);
1605                 break;
1606         }
1607
1608         case DIOCCLRSTATES: {
1609                 struct pf_state         *s;
1610                 struct pfioc_state_kill *psk = (struct pfioc_state_kill *)addr;
1611                 u_int                    i, killed = 0;
1612
1613                 for (i = 0; i <= pf_hashmask; i++) {
1614                         struct pf_idhash *ih = &V_pf_idhash[i];
1615
1616 relock_DIOCCLRSTATES:
1617                         PF_HASHROW_LOCK(ih);
1618                         LIST_FOREACH(s, &ih->states, entry)
1619                                 if (!psk->psk_ifname[0] ||
1620                                     !strcmp(psk->psk_ifname,
1621                                     s->kif->pfik_name)) {
1622                                         /*
1623                                          * Don't send out individual
1624                                          * delete messages.
1625                                          */
1626                                         s->state_flags |= PFSTATE_NOSYNC;
1627                                         pf_unlink_state(s, PF_ENTER_LOCKED);
1628                                         killed++;
1629                                         goto relock_DIOCCLRSTATES;
1630                                 }
1631                         PF_HASHROW_UNLOCK(ih);
1632                 }
1633                 psk->psk_killed = killed;
1634                 if (pfsync_clear_states_ptr != NULL)
1635                         pfsync_clear_states_ptr(V_pf_status.hostid, psk->psk_ifname);
1636                 break;
1637         }
1638
1639         case DIOCKILLSTATES: {
1640                 struct pf_state         *s;
1641                 struct pf_state_key     *sk;
1642                 struct pf_addr          *srcaddr, *dstaddr;
1643                 u_int16_t                srcport, dstport;
1644                 struct pfioc_state_kill *psk = (struct pfioc_state_kill *)addr;
1645                 u_int                    i, killed = 0;
1646
1647                 if (psk->psk_pfcmp.id) {
1648                         if (psk->psk_pfcmp.creatorid == 0)
1649                                 psk->psk_pfcmp.creatorid = V_pf_status.hostid;
1650                         if ((s = pf_find_state_byid(psk->psk_pfcmp.id,
1651                             psk->psk_pfcmp.creatorid))) {
1652                                 pf_unlink_state(s, PF_ENTER_LOCKED);
1653                                 psk->psk_killed = 1;
1654                         }
1655                         break;
1656                 }
1657
1658                 for (i = 0; i <= pf_hashmask; i++) {
1659                         struct pf_idhash *ih = &V_pf_idhash[i];
1660
1661 relock_DIOCKILLSTATES:
1662                         PF_HASHROW_LOCK(ih);
1663                         LIST_FOREACH(s, &ih->states, entry) {
1664                                 sk = s->key[PF_SK_WIRE];
1665                                 if (s->direction == PF_OUT) {
1666                                         srcaddr = &sk->addr[1];
1667                                         dstaddr = &sk->addr[0];
1668                                         srcport = sk->port[1];
1669                                         dstport = sk->port[0];
1670                                 } else {
1671                                         srcaddr = &sk->addr[0];
1672                                         dstaddr = &sk->addr[1];
1673                                         srcport = sk->port[0];
1674                                         dstport = sk->port[1];
1675                                 }
1676
1677                                 if ((!psk->psk_af || sk->af == psk->psk_af)
1678                                     && (!psk->psk_proto || psk->psk_proto ==
1679                                     sk->proto) &&
1680                                     PF_MATCHA(psk->psk_src.neg,
1681                                     &psk->psk_src.addr.v.a.addr,
1682                                     &psk->psk_src.addr.v.a.mask,
1683                                     srcaddr, sk->af) &&
1684                                     PF_MATCHA(psk->psk_dst.neg,
1685                                     &psk->psk_dst.addr.v.a.addr,
1686                                     &psk->psk_dst.addr.v.a.mask,
1687                                     dstaddr, sk->af) &&
1688                                     (psk->psk_src.port_op == 0 ||
1689                                     pf_match_port(psk->psk_src.port_op,
1690                                     psk->psk_src.port[0], psk->psk_src.port[1],
1691                                     srcport)) &&
1692                                     (psk->psk_dst.port_op == 0 ||
1693                                     pf_match_port(psk->psk_dst.port_op,
1694                                     psk->psk_dst.port[0], psk->psk_dst.port[1],
1695                                     dstport)) &&
1696                                     (!psk->psk_label[0] ||
1697                                     (s->rule.ptr->label[0] &&
1698                                     !strcmp(psk->psk_label,
1699                                     s->rule.ptr->label))) &&
1700                                     (!psk->psk_ifname[0] ||
1701                                     !strcmp(psk->psk_ifname,
1702                                     s->kif->pfik_name))) {
1703                                         pf_unlink_state(s, PF_ENTER_LOCKED);
1704                                         killed++;
1705                                         goto relock_DIOCKILLSTATES;
1706                                 }
1707                         }
1708                         PF_HASHROW_UNLOCK(ih);
1709                 }
1710                 psk->psk_killed = killed;
1711                 break;
1712         }
1713
1714         case DIOCADDSTATE: {
1715                 struct pfioc_state      *ps = (struct pfioc_state *)addr;
1716                 struct pfsync_state     *sp = &ps->state;
1717
1718                 if (sp->timeout >= PFTM_MAX) {
1719                         error = EINVAL;
1720                         break;
1721                 }
1722                 if (pfsync_state_import_ptr != NULL) {
1723                         PF_RULES_RLOCK();
1724                         error = pfsync_state_import_ptr(sp, PFSYNC_SI_IOCTL);
1725                         PF_RULES_RUNLOCK();
1726                 } else
1727                         error = EOPNOTSUPP;
1728                 break;
1729         }
1730
1731         case DIOCGETSTATE: {
1732                 struct pfioc_state      *ps = (struct pfioc_state *)addr;
1733                 struct pf_state         *s;
1734
1735                 s = pf_find_state_byid(ps->state.id, ps->state.creatorid);
1736                 if (s == NULL) {
1737                         error = ENOENT;
1738                         break;
1739                 }
1740
1741                 pfsync_state_export(&ps->state, s);
1742                 PF_STATE_UNLOCK(s);
1743                 break;
1744         }
1745
1746         case DIOCGETSTATES: {
1747                 struct pfioc_states     *ps = (struct pfioc_states *)addr;
1748                 struct pf_state         *s;
1749                 struct pfsync_state     *pstore, *p;
1750                 int i, nr;
1751
1752                 if (ps->ps_len == 0) {
1753                         nr = uma_zone_get_cur(V_pf_state_z);
1754                         ps->ps_len = sizeof(struct pfsync_state) * nr;
1755                         break;
1756                 }
1757
1758                 p = pstore = malloc(ps->ps_len, M_TEMP, M_WAITOK);
1759                 nr = 0;
1760
1761                 for (i = 0; i <= pf_hashmask; i++) {
1762                         struct pf_idhash *ih = &V_pf_idhash[i];
1763
1764                         PF_HASHROW_LOCK(ih);
1765                         LIST_FOREACH(s, &ih->states, entry) {
1766
1767                                 if (s->timeout == PFTM_UNLINKED)
1768                                         continue;
1769
1770                                 if ((nr+1) * sizeof(*p) > ps->ps_len) {
1771                                         PF_HASHROW_UNLOCK(ih);
1772                                         goto DIOCGETSTATES_full;
1773                                 }
1774                                 pfsync_state_export(p, s);
1775                                 p++;
1776                                 nr++;
1777                         }
1778                         PF_HASHROW_UNLOCK(ih);
1779                 }
1780 DIOCGETSTATES_full:
1781                 error = copyout(pstore, ps->ps_states,
1782                     sizeof(struct pfsync_state) * nr);
1783                 if (error) {
1784                         free(pstore, M_TEMP);
1785                         break;
1786                 }
1787                 ps->ps_len = sizeof(struct pfsync_state) * nr;
1788                 free(pstore, M_TEMP);
1789
1790                 break;
1791         }
1792
1793         case DIOCGETSTATUS: {
1794                 struct pf_status *s = (struct pf_status *)addr;
1795
1796                 PF_RULES_RLOCK();
1797                 s->running = V_pf_status.running;
1798                 s->since   = V_pf_status.since;
1799                 s->debug   = V_pf_status.debug;
1800                 s->hostid  = V_pf_status.hostid;
1801                 s->states  = V_pf_status.states;
1802                 s->src_nodes = V_pf_status.src_nodes;
1803
1804                 for (int i = 0; i < PFRES_MAX; i++)
1805                         s->counters[i] =
1806                             counter_u64_fetch(V_pf_status.counters[i]);
1807                 for (int i = 0; i < LCNT_MAX; i++)
1808                         s->lcounters[i] =
1809                             counter_u64_fetch(V_pf_status.lcounters[i]);
1810                 for (int i = 0; i < FCNT_MAX; i++)
1811                         s->fcounters[i] =
1812                             counter_u64_fetch(V_pf_status.fcounters[i]);
1813                 for (int i = 0; i < SCNT_MAX; i++)
1814                         s->scounters[i] =
1815                             counter_u64_fetch(V_pf_status.scounters[i]);
1816
1817                 bcopy(V_pf_status.ifname, s->ifname, IFNAMSIZ);
1818                 bcopy(V_pf_status.pf_chksum, s->pf_chksum,
1819                     PF_MD5_DIGEST_LENGTH);
1820
1821                 pfi_update_status(s->ifname, s);
1822                 PF_RULES_RUNLOCK();
1823                 break;
1824         }
1825
1826         case DIOCSETSTATUSIF: {
1827                 struct pfioc_if *pi = (struct pfioc_if *)addr;
1828
1829                 if (pi->ifname[0] == 0) {
1830                         bzero(V_pf_status.ifname, IFNAMSIZ);
1831                         break;
1832                 }
1833                 PF_RULES_WLOCK();
1834                 strlcpy(V_pf_status.ifname, pi->ifname, IFNAMSIZ);
1835                 PF_RULES_WUNLOCK();
1836                 break;
1837         }
1838
1839         case DIOCCLRSTATUS: {
1840                 PF_RULES_WLOCK();
1841                 for (int i = 0; i < PFRES_MAX; i++)
1842                         counter_u64_zero(V_pf_status.counters[i]);
1843                 for (int i = 0; i < FCNT_MAX; i++)
1844                         counter_u64_zero(V_pf_status.fcounters[i]);
1845                 for (int i = 0; i < SCNT_MAX; i++)
1846                         counter_u64_zero(V_pf_status.scounters[i]);
1847                 V_pf_status.since = time_second;
1848                 if (*V_pf_status.ifname)
1849                         pfi_update_status(V_pf_status.ifname, NULL);
1850                 PF_RULES_WUNLOCK();
1851                 break;
1852         }
1853
1854         case DIOCNATLOOK: {
1855                 struct pfioc_natlook    *pnl = (struct pfioc_natlook *)addr;
1856                 struct pf_state_key     *sk;
1857                 struct pf_state         *state;
1858                 struct pf_state_key_cmp  key;
1859                 int                      m = 0, direction = pnl->direction;
1860                 int                      sidx, didx;
1861
1862                 /* NATLOOK src and dst are reversed, so reverse sidx/didx */
1863                 sidx = (direction == PF_IN) ? 1 : 0;
1864                 didx = (direction == PF_IN) ? 0 : 1;
1865
1866                 if (!pnl->proto ||
1867                     PF_AZERO(&pnl->saddr, pnl->af) ||
1868                     PF_AZERO(&pnl->daddr, pnl->af) ||
1869                     ((pnl->proto == IPPROTO_TCP ||
1870                     pnl->proto == IPPROTO_UDP) &&
1871                     (!pnl->dport || !pnl->sport)))
1872                         error = EINVAL;
1873                 else {
1874                         bzero(&key, sizeof(key));
1875                         key.af = pnl->af;
1876                         key.proto = pnl->proto;
1877                         PF_ACPY(&key.addr[sidx], &pnl->saddr, pnl->af);
1878                         key.port[sidx] = pnl->sport;
1879                         PF_ACPY(&key.addr[didx], &pnl->daddr, pnl->af);
1880                         key.port[didx] = pnl->dport;
1881
1882                         state = pf_find_state_all(&key, direction, &m);
1883
1884                         if (m > 1)
1885                                 error = E2BIG;  /* more than one state */
1886                         else if (state != NULL) {
1887                                 /* XXXGL: not locked read */
1888                                 sk = state->key[sidx];
1889                                 PF_ACPY(&pnl->rsaddr, &sk->addr[sidx], sk->af);
1890                                 pnl->rsport = sk->port[sidx];
1891                                 PF_ACPY(&pnl->rdaddr, &sk->addr[didx], sk->af);
1892                                 pnl->rdport = sk->port[didx];
1893                         } else
1894                                 error = ENOENT;
1895                 }
1896                 break;
1897         }
1898
1899         case DIOCSETTIMEOUT: {
1900                 struct pfioc_tm *pt = (struct pfioc_tm *)addr;
1901                 int              old;
1902
1903                 if (pt->timeout < 0 || pt->timeout >= PFTM_MAX ||
1904                     pt->seconds < 0) {
1905                         error = EINVAL;
1906                         break;
1907                 }
1908                 PF_RULES_WLOCK();
1909                 old = V_pf_default_rule.timeout[pt->timeout];
1910                 if (pt->timeout == PFTM_INTERVAL && pt->seconds == 0)
1911                         pt->seconds = 1;
1912                 V_pf_default_rule.timeout[pt->timeout] = pt->seconds;
1913                 if (pt->timeout == PFTM_INTERVAL && pt->seconds < old)
1914                         wakeup(pf_purge_thread);
1915                 pt->seconds = old;
1916                 PF_RULES_WUNLOCK();
1917                 break;
1918         }
1919
1920         case DIOCGETTIMEOUT: {
1921                 struct pfioc_tm *pt = (struct pfioc_tm *)addr;
1922
1923                 if (pt->timeout < 0 || pt->timeout >= PFTM_MAX) {
1924                         error = EINVAL;
1925                         break;
1926                 }
1927                 PF_RULES_RLOCK();
1928                 pt->seconds = V_pf_default_rule.timeout[pt->timeout];
1929                 PF_RULES_RUNLOCK();
1930                 break;
1931         }
1932
1933         case DIOCGETLIMIT: {
1934                 struct pfioc_limit      *pl = (struct pfioc_limit *)addr;
1935
1936                 if (pl->index < 0 || pl->index >= PF_LIMIT_MAX) {
1937                         error = EINVAL;
1938                         break;
1939                 }
1940                 PF_RULES_RLOCK();
1941                 pl->limit = V_pf_limits[pl->index].limit;
1942                 PF_RULES_RUNLOCK();
1943                 break;
1944         }
1945
1946         case DIOCSETLIMIT: {
1947                 struct pfioc_limit      *pl = (struct pfioc_limit *)addr;
1948                 int                      old_limit;
1949
1950                 PF_RULES_WLOCK();
1951                 if (pl->index < 0 || pl->index >= PF_LIMIT_MAX ||
1952                     V_pf_limits[pl->index].zone == NULL) {
1953                         PF_RULES_WUNLOCK();
1954                         error = EINVAL;
1955                         break;
1956                 }
1957                 uma_zone_set_max(V_pf_limits[pl->index].zone, pl->limit);
1958                 old_limit = V_pf_limits[pl->index].limit;
1959                 V_pf_limits[pl->index].limit = pl->limit;
1960                 pl->limit = old_limit;
1961                 PF_RULES_WUNLOCK();
1962                 break;
1963         }
1964
1965         case DIOCSETDEBUG: {
1966                 u_int32_t       *level = (u_int32_t *)addr;
1967
1968                 PF_RULES_WLOCK();
1969                 V_pf_status.debug = *level;
1970                 PF_RULES_WUNLOCK();
1971                 break;
1972         }
1973
1974         case DIOCCLRRULECTRS: {
1975                 /* obsoleted by DIOCGETRULE with action=PF_GET_CLR_CNTR */
1976                 struct pf_ruleset       *ruleset = &pf_main_ruleset;
1977                 struct pf_rule          *rule;
1978
1979                 PF_RULES_WLOCK();
1980                 TAILQ_FOREACH(rule,
1981                     ruleset->rules[PF_RULESET_FILTER].active.ptr, entries) {
1982                         rule->evaluations = 0;
1983                         rule->packets[0] = rule->packets[1] = 0;
1984                         rule->bytes[0] = rule->bytes[1] = 0;
1985                 }
1986                 PF_RULES_WUNLOCK();
1987                 break;
1988         }
1989
1990         case DIOCGIFSPEED: {
1991                 struct pf_ifspeed       *psp = (struct pf_ifspeed *)addr;
1992                 struct pf_ifspeed       ps;
1993                 struct ifnet            *ifp;
1994
1995                 if (psp->ifname[0] != 0) {
1996                         /* Can we completely trust user-land? */
1997                         strlcpy(ps.ifname, psp->ifname, IFNAMSIZ);
1998                         ifp = ifunit(ps.ifname);
1999                         if (ifp != NULL)
2000                                 psp->baudrate = ifp->if_baudrate;
2001                         else
2002                                 error = EINVAL;
2003                 } else
2004                         error = EINVAL;
2005                 break;
2006         }
2007
2008 #ifdef ALTQ
2009         case DIOCSTARTALTQ: {
2010                 struct pf_altq          *altq;
2011
2012                 PF_RULES_WLOCK();
2013                 /* enable all altq interfaces on active list */
2014                 TAILQ_FOREACH(altq, V_pf_altqs_active, entries) {
2015                         if (altq->qname[0] == 0 && (altq->local_flags &
2016                             PFALTQ_FLAG_IF_REMOVED) == 0) {
2017                                 error = pf_enable_altq(altq);
2018                                 if (error != 0)
2019                                         break;
2020                         }
2021                 }
2022                 if (error == 0)
2023                         V_pf_altq_running = 1;
2024                 PF_RULES_WUNLOCK();
2025                 DPFPRINTF(PF_DEBUG_MISC, ("altq: started\n"));
2026                 break;
2027         }
2028
2029         case DIOCSTOPALTQ: {
2030                 struct pf_altq          *altq;
2031
2032                 PF_RULES_WLOCK();
2033                 /* disable all altq interfaces on active list */
2034                 TAILQ_FOREACH(altq, V_pf_altqs_active, entries) {
2035                         if (altq->qname[0] == 0 && (altq->local_flags &
2036                             PFALTQ_FLAG_IF_REMOVED) == 0) {
2037                                 error = pf_disable_altq(altq);
2038                                 if (error != 0)
2039                                         break;
2040                         }
2041                 }
2042                 if (error == 0)
2043                         V_pf_altq_running = 0;
2044                 PF_RULES_WUNLOCK();
2045                 DPFPRINTF(PF_DEBUG_MISC, ("altq: stopped\n"));
2046                 break;
2047         }
2048
2049         case DIOCADDALTQ: {
2050                 struct pfioc_altq       *pa = (struct pfioc_altq *)addr;
2051                 struct pf_altq          *altq, *a;
2052                 struct ifnet            *ifp;
2053
2054                 altq = malloc(sizeof(*altq), M_PFALTQ, M_WAITOK);
2055                 bcopy(&pa->altq, altq, sizeof(struct pf_altq));
2056                 altq->local_flags = 0;
2057
2058                 PF_RULES_WLOCK();
2059                 if (pa->ticket != V_ticket_altqs_inactive) {
2060                         PF_RULES_WUNLOCK();
2061                         free(altq, M_PFALTQ);
2062                         error = EBUSY;
2063                         break;
2064                 }
2065
2066                 /*
2067                  * if this is for a queue, find the discipline and
2068                  * copy the necessary fields
2069                  */
2070                 if (altq->qname[0] != 0) {
2071                         if ((altq->qid = pf_qname2qid(altq->qname)) == 0) {
2072                                 PF_RULES_WUNLOCK();
2073                                 error = EBUSY;
2074                                 free(altq, M_PFALTQ);
2075                                 break;
2076                         }
2077                         altq->altq_disc = NULL;
2078                         TAILQ_FOREACH(a, V_pf_altqs_inactive, entries) {
2079                                 if (strncmp(a->ifname, altq->ifname,
2080                                     IFNAMSIZ) == 0 && a->qname[0] == 0) {
2081                                         altq->altq_disc = a->altq_disc;
2082                                         break;
2083                                 }
2084                         }
2085                 }
2086
2087                 if ((ifp = ifunit(altq->ifname)) == NULL)
2088                         altq->local_flags |= PFALTQ_FLAG_IF_REMOVED;
2089                 else
2090                         error = altq_add(altq);
2091
2092                 if (error) {
2093                         PF_RULES_WUNLOCK();
2094                         free(altq, M_PFALTQ);
2095                         break;
2096                 }
2097
2098                 TAILQ_INSERT_TAIL(V_pf_altqs_inactive, altq, entries);
2099                 bcopy(altq, &pa->altq, sizeof(struct pf_altq));
2100                 PF_RULES_WUNLOCK();
2101                 break;
2102         }
2103
2104         case DIOCGETALTQS: {
2105                 struct pfioc_altq       *pa = (struct pfioc_altq *)addr;
2106                 struct pf_altq          *altq;
2107
2108                 PF_RULES_RLOCK();
2109                 pa->nr = 0;
2110                 TAILQ_FOREACH(altq, V_pf_altqs_active, entries)
2111                         pa->nr++;
2112                 pa->ticket = V_ticket_altqs_active;
2113                 PF_RULES_RUNLOCK();
2114                 break;
2115         }
2116
2117         case DIOCGETALTQ: {
2118                 struct pfioc_altq       *pa = (struct pfioc_altq *)addr;
2119                 struct pf_altq          *altq;
2120                 u_int32_t                nr;
2121
2122                 PF_RULES_RLOCK();
2123                 if (pa->ticket != V_ticket_altqs_active) {
2124                         PF_RULES_RUNLOCK();
2125                         error = EBUSY;
2126                         break;
2127                 }
2128                 nr = 0;
2129                 altq = TAILQ_FIRST(V_pf_altqs_active);
2130                 while ((altq != NULL) && (nr < pa->nr)) {
2131                         altq = TAILQ_NEXT(altq, entries);
2132                         nr++;
2133                 }
2134                 if (altq == NULL) {
2135                         PF_RULES_RUNLOCK();
2136                         error = EBUSY;
2137                         break;
2138                 }
2139                 bcopy(altq, &pa->altq, sizeof(struct pf_altq));
2140                 PF_RULES_RUNLOCK();
2141                 break;
2142         }
2143
2144         case DIOCCHANGEALTQ:
2145                 /* CHANGEALTQ not supported yet! */
2146                 error = ENODEV;
2147                 break;
2148
2149         case DIOCGETQSTATS: {
2150                 struct pfioc_qstats     *pq = (struct pfioc_qstats *)addr;
2151                 struct pf_altq          *altq;
2152                 u_int32_t                nr;
2153                 int                      nbytes;
2154
2155                 PF_RULES_RLOCK();
2156                 if (pq->ticket != V_ticket_altqs_active) {
2157                         PF_RULES_RUNLOCK();
2158                         error = EBUSY;
2159                         break;
2160                 }
2161                 nbytes = pq->nbytes;
2162                 nr = 0;
2163                 altq = TAILQ_FIRST(V_pf_altqs_active);
2164                 while ((altq != NULL) && (nr < pq->nr)) {
2165                         altq = TAILQ_NEXT(altq, entries);
2166                         nr++;
2167                 }
2168                 if (altq == NULL) {
2169                         PF_RULES_RUNLOCK();
2170                         error = EBUSY;
2171                         break;
2172                 }
2173
2174                 if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) != 0) {
2175                         PF_RULES_RUNLOCK();
2176                         error = ENXIO;
2177                         break;
2178                 }
2179                 PF_RULES_RUNLOCK();
2180                 error = altq_getqstats(altq, pq->buf, &nbytes);
2181                 if (error == 0) {
2182                         pq->scheduler = altq->scheduler;
2183                         pq->nbytes = nbytes;
2184                 }
2185                 break;
2186         }
2187 #endif /* ALTQ */
2188
2189         case DIOCBEGINADDRS: {
2190                 struct pfioc_pooladdr   *pp = (struct pfioc_pooladdr *)addr;
2191
2192                 PF_RULES_WLOCK();
2193                 pf_empty_pool(&V_pf_pabuf);
2194                 pp->ticket = ++V_ticket_pabuf;
2195                 PF_RULES_WUNLOCK();
2196                 break;
2197         }
2198
2199         case DIOCADDADDR: {
2200                 struct pfioc_pooladdr   *pp = (struct pfioc_pooladdr *)addr;
2201                 struct pf_pooladdr      *pa;
2202                 struct pfi_kif          *kif = NULL;
2203
2204 #ifndef INET
2205                 if (pp->af == AF_INET) {
2206                         error = EAFNOSUPPORT;
2207                         break;
2208                 }
2209 #endif /* INET */
2210 #ifndef INET6
2211                 if (pp->af == AF_INET6) {
2212                         error = EAFNOSUPPORT;
2213                         break;
2214                 }
2215 #endif /* INET6 */
2216                 if (pp->addr.addr.type != PF_ADDR_ADDRMASK &&
2217                     pp->addr.addr.type != PF_ADDR_DYNIFTL &&
2218                     pp->addr.addr.type != PF_ADDR_TABLE) {
2219                         error = EINVAL;
2220                         break;
2221                 }
2222                 pa = malloc(sizeof(*pa), M_PFRULE, M_WAITOK);
2223                 bcopy(&pp->addr, pa, sizeof(struct pf_pooladdr));
2224                 if (pa->ifname[0])
2225                         kif = malloc(sizeof(*kif), PFI_MTYPE, M_WAITOK);
2226                 PF_RULES_WLOCK();
2227                 if (pp->ticket != V_ticket_pabuf) {
2228                         PF_RULES_WUNLOCK();
2229                         if (pa->ifname[0])
2230                                 free(kif, PFI_MTYPE);
2231                         free(pa, M_PFRULE);
2232                         error = EBUSY;
2233                         break;
2234                 }
2235                 if (pa->ifname[0]) {
2236                         pa->kif = pfi_kif_attach(kif, pa->ifname);
2237                         pfi_kif_ref(pa->kif);
2238                 } else
2239                         pa->kif = NULL;
2240                 if (pa->addr.type == PF_ADDR_DYNIFTL && ((error =
2241                     pfi_dynaddr_setup(&pa->addr, pp->af)) != 0)) {
2242                         if (pa->ifname[0])
2243                                 pfi_kif_unref(pa->kif);
2244                         PF_RULES_WUNLOCK();
2245                         free(pa, M_PFRULE);
2246                         break;
2247                 }
2248                 TAILQ_INSERT_TAIL(&V_pf_pabuf, pa, entries);
2249                 PF_RULES_WUNLOCK();
2250                 break;
2251         }
2252
2253         case DIOCGETADDRS: {
2254                 struct pfioc_pooladdr   *pp = (struct pfioc_pooladdr *)addr;
2255                 struct pf_pool          *pool;
2256                 struct pf_pooladdr      *pa;
2257
2258                 PF_RULES_RLOCK();
2259                 pp->nr = 0;
2260                 pool = pf_get_pool(pp->anchor, pp->ticket, pp->r_action,
2261                     pp->r_num, 0, 1, 0);
2262                 if (pool == NULL) {
2263                         PF_RULES_RUNLOCK();
2264                         error = EBUSY;
2265                         break;
2266                 }
2267                 TAILQ_FOREACH(pa, &pool->list, entries)
2268                         pp->nr++;
2269                 PF_RULES_RUNLOCK();
2270                 break;
2271         }
2272
2273         case DIOCGETADDR: {
2274                 struct pfioc_pooladdr   *pp = (struct pfioc_pooladdr *)addr;
2275                 struct pf_pool          *pool;
2276                 struct pf_pooladdr      *pa;
2277                 u_int32_t                nr = 0;
2278
2279                 PF_RULES_RLOCK();
2280                 pool = pf_get_pool(pp->anchor, pp->ticket, pp->r_action,
2281                     pp->r_num, 0, 1, 1);
2282                 if (pool == NULL) {
2283                         PF_RULES_RUNLOCK();
2284                         error = EBUSY;
2285                         break;
2286                 }
2287                 pa = TAILQ_FIRST(&pool->list);
2288                 while ((pa != NULL) && (nr < pp->nr)) {
2289                         pa = TAILQ_NEXT(pa, entries);
2290                         nr++;
2291                 }
2292                 if (pa == NULL) {
2293                         PF_RULES_RUNLOCK();
2294                         error = EBUSY;
2295                         break;
2296                 }
2297                 bcopy(pa, &pp->addr, sizeof(struct pf_pooladdr));
2298                 pf_addr_copyout(&pp->addr.addr);
2299                 PF_RULES_RUNLOCK();
2300                 break;
2301         }
2302
2303         case DIOCCHANGEADDR: {
2304                 struct pfioc_pooladdr   *pca = (struct pfioc_pooladdr *)addr;
2305                 struct pf_pool          *pool;
2306                 struct pf_pooladdr      *oldpa = NULL, *newpa = NULL;
2307                 struct pf_ruleset       *ruleset;
2308                 struct pfi_kif          *kif = NULL;
2309
2310                 if (pca->action < PF_CHANGE_ADD_HEAD ||
2311                     pca->action > PF_CHANGE_REMOVE) {
2312                         error = EINVAL;
2313                         break;
2314                 }
2315                 if (pca->addr.addr.type != PF_ADDR_ADDRMASK &&
2316                     pca->addr.addr.type != PF_ADDR_DYNIFTL &&
2317                     pca->addr.addr.type != PF_ADDR_TABLE) {
2318                         error = EINVAL;
2319                         break;
2320                 }
2321
2322                 if (pca->action != PF_CHANGE_REMOVE) {
2323 #ifndef INET
2324                         if (pca->af == AF_INET) {
2325                                 error = EAFNOSUPPORT;
2326                                 break;
2327                         }
2328 #endif /* INET */
2329 #ifndef INET6
2330                         if (pca->af == AF_INET6) {
2331                                 error = EAFNOSUPPORT;
2332                                 break;
2333                         }
2334 #endif /* INET6 */
2335                         newpa = malloc(sizeof(*newpa), M_PFRULE, M_WAITOK);
2336                         bcopy(&pca->addr, newpa, sizeof(struct pf_pooladdr));
2337                         if (newpa->ifname[0])
2338                                 kif = malloc(sizeof(*kif), PFI_MTYPE, M_WAITOK);
2339                         newpa->kif = NULL;
2340                 }
2341
2342 #define ERROUT(x)       { error = (x); goto DIOCCHANGEADDR_error; }
2343                 PF_RULES_WLOCK();
2344                 ruleset = pf_find_ruleset(pca->anchor);
2345                 if (ruleset == NULL)
2346                         ERROUT(EBUSY);
2347
2348                 pool = pf_get_pool(pca->anchor, pca->ticket, pca->r_action,
2349                     pca->r_num, pca->r_last, 1, 1);
2350                 if (pool == NULL)
2351                         ERROUT(EBUSY);
2352
2353                 if (pca->action != PF_CHANGE_REMOVE) {
2354                         if (newpa->ifname[0]) {
2355                                 newpa->kif = pfi_kif_attach(kif, newpa->ifname);
2356                                 pfi_kif_ref(newpa->kif);
2357                                 kif = NULL;
2358                         }
2359
2360                         switch (newpa->addr.type) {
2361                         case PF_ADDR_DYNIFTL:
2362                                 error = pfi_dynaddr_setup(&newpa->addr,
2363                                     pca->af);
2364                                 break;
2365                         case PF_ADDR_TABLE:
2366                                 newpa->addr.p.tbl = pfr_attach_table(ruleset,
2367                                     newpa->addr.v.tblname);
2368                                 if (newpa->addr.p.tbl == NULL)
2369                                         error = ENOMEM;
2370                                 break;
2371                         }
2372                         if (error)
2373                                 goto DIOCCHANGEADDR_error;
2374                 }
2375
2376                 switch (pca->action) {
2377                 case PF_CHANGE_ADD_HEAD:
2378                         oldpa = TAILQ_FIRST(&pool->list);
2379                         break;
2380                 case PF_CHANGE_ADD_TAIL:
2381                         oldpa = TAILQ_LAST(&pool->list, pf_palist);
2382                         break;
2383                 default:
2384                         oldpa = TAILQ_FIRST(&pool->list);
2385                         for (int i = 0; oldpa && i < pca->nr; i++)
2386                                 oldpa = TAILQ_NEXT(oldpa, entries);
2387
2388                         if (oldpa == NULL)
2389                                 ERROUT(EINVAL);
2390                 }
2391
2392                 if (pca->action == PF_CHANGE_REMOVE) {
2393                         TAILQ_REMOVE(&pool->list, oldpa, entries);
2394                         switch (oldpa->addr.type) {
2395                         case PF_ADDR_DYNIFTL:
2396                                 pfi_dynaddr_remove(oldpa->addr.p.dyn);
2397                                 break;
2398                         case PF_ADDR_TABLE:
2399                                 pfr_detach_table(oldpa->addr.p.tbl);
2400                                 break;
2401                         }
2402                         if (oldpa->kif)
2403                                 pfi_kif_unref(oldpa->kif);
2404                         free(oldpa, M_PFRULE);
2405                 } else {
2406                         if (oldpa == NULL)
2407                                 TAILQ_INSERT_TAIL(&pool->list, newpa, entries);
2408                         else if (pca->action == PF_CHANGE_ADD_HEAD ||
2409                             pca->action == PF_CHANGE_ADD_BEFORE)
2410                                 TAILQ_INSERT_BEFORE(oldpa, newpa, entries);
2411                         else
2412                                 TAILQ_INSERT_AFTER(&pool->list, oldpa,
2413                                     newpa, entries);
2414                 }
2415
2416                 pool->cur = TAILQ_FIRST(&pool->list);
2417                 PF_ACPY(&pool->counter, &pool->cur->addr.v.a.addr, pca->af);
2418                 PF_RULES_WUNLOCK();
2419                 break;
2420
2421 #undef ERROUT
2422 DIOCCHANGEADDR_error:
2423                 if (newpa->kif)
2424                         pfi_kif_unref(newpa->kif);
2425                 PF_RULES_WUNLOCK();
2426                 if (newpa != NULL)
2427                         free(newpa, M_PFRULE);
2428                 if (kif != NULL)
2429                         free(kif, PFI_MTYPE);
2430                 break;
2431         }
2432
2433         case DIOCGETRULESETS: {
2434                 struct pfioc_ruleset    *pr = (struct pfioc_ruleset *)addr;
2435                 struct pf_ruleset       *ruleset;
2436                 struct pf_anchor        *anchor;
2437
2438                 PF_RULES_RLOCK();
2439                 pr->path[sizeof(pr->path) - 1] = 0;
2440                 if ((ruleset = pf_find_ruleset(pr->path)) == NULL) {
2441                         PF_RULES_RUNLOCK();
2442                         error = ENOENT;
2443                         break;
2444                 }
2445                 pr->nr = 0;
2446                 if (ruleset->anchor == NULL) {
2447                         /* XXX kludge for pf_main_ruleset */
2448                         RB_FOREACH(anchor, pf_anchor_global, &V_pf_anchors)
2449                                 if (anchor->parent == NULL)
2450                                         pr->nr++;
2451                 } else {
2452                         RB_FOREACH(anchor, pf_anchor_node,
2453                             &ruleset->anchor->children)
2454                                 pr->nr++;
2455                 }
2456                 PF_RULES_RUNLOCK();
2457                 break;
2458         }
2459
2460         case DIOCGETRULESET: {
2461                 struct pfioc_ruleset    *pr = (struct pfioc_ruleset *)addr;
2462                 struct pf_ruleset       *ruleset;
2463                 struct pf_anchor        *anchor;
2464                 u_int32_t                nr = 0;
2465
2466                 PF_RULES_RLOCK();
2467                 pr->path[sizeof(pr->path) - 1] = 0;
2468                 if ((ruleset = pf_find_ruleset(pr->path)) == NULL) {
2469                         PF_RULES_RUNLOCK();
2470                         error = ENOENT;
2471                         break;
2472                 }
2473                 pr->name[0] = 0;
2474                 if (ruleset->anchor == NULL) {
2475                         /* XXX kludge for pf_main_ruleset */
2476                         RB_FOREACH(anchor, pf_anchor_global, &V_pf_anchors)
2477                                 if (anchor->parent == NULL && nr++ == pr->nr) {
2478                                         strlcpy(pr->name, anchor->name,
2479                                             sizeof(pr->name));
2480                                         break;
2481                                 }
2482                 } else {
2483                         RB_FOREACH(anchor, pf_anchor_node,
2484                             &ruleset->anchor->children)
2485                                 if (nr++ == pr->nr) {
2486                                         strlcpy(pr->name, anchor->name,
2487                                             sizeof(pr->name));
2488                                         break;
2489                                 }
2490                 }
2491                 if (!pr->name[0])
2492                         error = EBUSY;
2493                 PF_RULES_RUNLOCK();
2494                 break;
2495         }
2496
2497         case DIOCRCLRTABLES: {
2498                 struct pfioc_table *io = (struct pfioc_table *)addr;
2499
2500                 if (io->pfrio_esize != 0) {
2501                         error = ENODEV;
2502                         break;
2503                 }
2504                 PF_RULES_WLOCK();
2505                 error = pfr_clr_tables(&io->pfrio_table, &io->pfrio_ndel,
2506                     io->pfrio_flags | PFR_FLAG_USERIOCTL);
2507                 PF_RULES_WUNLOCK();
2508                 break;
2509         }
2510
2511         case DIOCRADDTABLES: {
2512                 struct pfioc_table *io = (struct pfioc_table *)addr;
2513                 struct pfr_table *pfrts;
2514                 size_t totlen;
2515
2516                 if (io->pfrio_esize != sizeof(struct pfr_table)) {
2517                         error = ENODEV;
2518                         break;
2519                 }
2520                 totlen = io->pfrio_size * sizeof(struct pfr_table);
2521                 pfrts = malloc(totlen, M_TEMP, M_WAITOK);
2522                 error = copyin(io->pfrio_buffer, pfrts, totlen);
2523                 if (error) {
2524                         free(pfrts, M_TEMP);
2525                         break;
2526                 }
2527                 PF_RULES_WLOCK();
2528                 error = pfr_add_tables(pfrts, io->pfrio_size,
2529                     &io->pfrio_nadd, io->pfrio_flags | PFR_FLAG_USERIOCTL);
2530                 PF_RULES_WUNLOCK();
2531                 free(pfrts, M_TEMP);
2532                 break;
2533         }
2534
2535         case DIOCRDELTABLES: {
2536                 struct pfioc_table *io = (struct pfioc_table *)addr;
2537                 struct pfr_table *pfrts;
2538                 size_t totlen;
2539
2540                 if (io->pfrio_esize != sizeof(struct pfr_table)) {
2541                         error = ENODEV;
2542                         break;
2543                 }
2544                 totlen = io->pfrio_size * sizeof(struct pfr_table);
2545                 pfrts = malloc(totlen, M_TEMP, M_WAITOK);
2546                 error = copyin(io->pfrio_buffer, pfrts, totlen);
2547                 if (error) {
2548                         free(pfrts, M_TEMP);
2549                         break;
2550                 }
2551                 PF_RULES_WLOCK();
2552                 error = pfr_del_tables(pfrts, io->pfrio_size,
2553                     &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL);
2554                 PF_RULES_WUNLOCK();
2555                 free(pfrts, M_TEMP);
2556                 break;
2557         }
2558
2559         case DIOCRGETTABLES: {
2560                 struct pfioc_table *io = (struct pfioc_table *)addr;
2561                 struct pfr_table *pfrts;
2562                 size_t totlen;
2563
2564                 if (io->pfrio_esize != sizeof(struct pfr_table)) {
2565                         error = ENODEV;
2566                         break;
2567                 }
2568                 totlen = io->pfrio_size * sizeof(struct pfr_table);
2569                 pfrts = malloc(totlen, M_TEMP, M_WAITOK);
2570                 PF_RULES_RLOCK();
2571                 error = pfr_get_tables(&io->pfrio_table, pfrts,
2572                     &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL);
2573                 PF_RULES_RUNLOCK();
2574                 if (error == 0)
2575                         error = copyout(pfrts, io->pfrio_buffer, totlen);
2576                 free(pfrts, M_TEMP);
2577                 break;
2578         }
2579
2580         case DIOCRGETTSTATS: {
2581                 struct pfioc_table *io = (struct pfioc_table *)addr;
2582                 struct pfr_tstats *pfrtstats;
2583                 size_t totlen;
2584
2585                 if (io->pfrio_esize != sizeof(struct pfr_tstats)) {
2586                         error = ENODEV;
2587                         break;
2588                 }
2589                 totlen = io->pfrio_size * sizeof(struct pfr_tstats);
2590                 pfrtstats = malloc(totlen, M_TEMP, M_WAITOK);
2591                 PF_RULES_WLOCK();
2592                 error = pfr_get_tstats(&io->pfrio_table, pfrtstats,
2593                     &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL);
2594                 PF_RULES_WUNLOCK();
2595                 if (error == 0)
2596                         error = copyout(pfrtstats, io->pfrio_buffer, totlen);
2597                 free(pfrtstats, M_TEMP);
2598                 break;
2599         }
2600
2601         case DIOCRCLRTSTATS: {
2602                 struct pfioc_table *io = (struct pfioc_table *)addr;
2603                 struct pfr_table *pfrts;
2604                 size_t totlen;
2605
2606                 if (io->pfrio_esize != sizeof(struct pfr_table)) {
2607                         error = ENODEV;
2608                         break;
2609                 }
2610                 totlen = io->pfrio_size * sizeof(struct pfr_table);
2611                 pfrts = malloc(totlen, M_TEMP, M_WAITOK);
2612                 error = copyin(io->pfrio_buffer, pfrts, totlen);
2613                 if (error) {
2614                         free(pfrts, M_TEMP);
2615                         break;
2616                 }
2617                 PF_RULES_WLOCK();
2618                 error = pfr_clr_tstats(pfrts, io->pfrio_size,
2619                     &io->pfrio_nzero, io->pfrio_flags | PFR_FLAG_USERIOCTL);
2620                 PF_RULES_WUNLOCK();
2621                 free(pfrts, M_TEMP);
2622                 break;
2623         }
2624
2625         case DIOCRSETTFLAGS: {
2626                 struct pfioc_table *io = (struct pfioc_table *)addr;
2627                 struct pfr_table *pfrts;
2628                 size_t totlen;
2629
2630                 if (io->pfrio_esize != sizeof(struct pfr_table)) {
2631                         error = ENODEV;
2632                         break;
2633                 }
2634                 totlen = io->pfrio_size * sizeof(struct pfr_table);
2635                 pfrts = malloc(totlen, M_TEMP, M_WAITOK);
2636                 error = copyin(io->pfrio_buffer, pfrts, totlen);
2637                 if (error) {
2638                         free(pfrts, M_TEMP);
2639                         break;
2640                 }
2641                 PF_RULES_WLOCK();
2642                 error = pfr_set_tflags(pfrts, io->pfrio_size,
2643                     io->pfrio_setflag, io->pfrio_clrflag, &io->pfrio_nchange,
2644                     &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL);
2645                 PF_RULES_WUNLOCK();
2646                 free(pfrts, M_TEMP);
2647                 break;
2648         }
2649
2650         case DIOCRCLRADDRS: {
2651                 struct pfioc_table *io = (struct pfioc_table *)addr;
2652
2653                 if (io->pfrio_esize != 0) {
2654                         error = ENODEV;
2655                         break;
2656                 }
2657                 PF_RULES_WLOCK();
2658                 error = pfr_clr_addrs(&io->pfrio_table, &io->pfrio_ndel,
2659                     io->pfrio_flags | PFR_FLAG_USERIOCTL);
2660                 PF_RULES_WUNLOCK();
2661                 break;
2662         }
2663
2664         case DIOCRADDADDRS: {
2665                 struct pfioc_table *io = (struct pfioc_table *)addr;
2666                 struct pfr_addr *pfras;
2667                 size_t totlen;
2668
2669                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
2670                         error = ENODEV;
2671                         break;
2672                 }
2673                 totlen = io->pfrio_size * sizeof(struct pfr_addr);
2674                 pfras = malloc(totlen, M_TEMP, M_WAITOK);
2675                 error = copyin(io->pfrio_buffer, pfras, totlen);
2676                 if (error) {
2677                         free(pfras, M_TEMP);
2678                         break;
2679                 }
2680                 PF_RULES_WLOCK();
2681                 error = pfr_add_addrs(&io->pfrio_table, pfras,
2682                     io->pfrio_size, &io->pfrio_nadd, io->pfrio_flags |
2683                     PFR_FLAG_USERIOCTL);
2684                 PF_RULES_WUNLOCK();
2685                 if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK)
2686                         error = copyout(pfras, io->pfrio_buffer, totlen);
2687                 free(pfras, M_TEMP);
2688                 break;
2689         }
2690
2691         case DIOCRDELADDRS: {
2692                 struct pfioc_table *io = (struct pfioc_table *)addr;
2693                 struct pfr_addr *pfras;
2694                 size_t totlen;
2695
2696                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
2697                         error = ENODEV;
2698                         break;
2699                 }
2700                 totlen = io->pfrio_size * sizeof(struct pfr_addr);
2701                 pfras = malloc(totlen, M_TEMP, M_WAITOK);
2702                 error = copyin(io->pfrio_buffer, pfras, totlen);
2703                 if (error) {
2704                         free(pfras, M_TEMP);
2705                         break;
2706                 }
2707                 PF_RULES_WLOCK();
2708                 error = pfr_del_addrs(&io->pfrio_table, pfras,
2709                     io->pfrio_size, &io->pfrio_ndel, io->pfrio_flags |
2710                     PFR_FLAG_USERIOCTL);
2711                 PF_RULES_WUNLOCK();
2712                 if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK)
2713                         error = copyout(pfras, io->pfrio_buffer, totlen);
2714                 free(pfras, M_TEMP);
2715                 break;
2716         }
2717
2718         case DIOCRSETADDRS: {
2719                 struct pfioc_table *io = (struct pfioc_table *)addr;
2720                 struct pfr_addr *pfras;
2721                 size_t totlen;
2722
2723                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
2724                         error = ENODEV;
2725                         break;
2726                 }
2727                 totlen = io->pfrio_size * sizeof(struct pfr_addr);
2728                 pfras = malloc(totlen, M_TEMP, M_WAITOK);
2729                 error = copyin(io->pfrio_buffer, pfras, totlen);
2730                 if (error) {
2731                         free(pfras, M_TEMP);
2732                         break;
2733                 }
2734                 PF_RULES_WLOCK();
2735                 error = pfr_set_addrs(&io->pfrio_table, pfras,
2736                     io->pfrio_size, &io->pfrio_size2, &io->pfrio_nadd,
2737                     &io->pfrio_ndel, &io->pfrio_nchange, io->pfrio_flags |
2738                     PFR_FLAG_USERIOCTL, 0);
2739                 PF_RULES_WUNLOCK();
2740                 if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK)
2741                         error = copyout(pfras, io->pfrio_buffer, totlen);
2742                 free(pfras, M_TEMP);
2743                 break;
2744         }
2745
2746         case DIOCRGETADDRS: {
2747                 struct pfioc_table *io = (struct pfioc_table *)addr;
2748                 struct pfr_addr *pfras;
2749                 size_t totlen;
2750
2751                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
2752                         error = ENODEV;
2753                         break;
2754                 }
2755                 totlen = io->pfrio_size * sizeof(struct pfr_addr);
2756                 pfras = malloc(totlen, M_TEMP, M_WAITOK);
2757                 PF_RULES_RLOCK();
2758                 error = pfr_get_addrs(&io->pfrio_table, pfras,
2759                     &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL);
2760                 PF_RULES_RUNLOCK();
2761                 if (error == 0)
2762                         error = copyout(pfras, io->pfrio_buffer, totlen);
2763                 free(pfras, M_TEMP);
2764                 break;
2765         }
2766
2767         case DIOCRGETASTATS: {
2768                 struct pfioc_table *io = (struct pfioc_table *)addr;
2769                 struct pfr_astats *pfrastats;
2770                 size_t totlen;
2771
2772                 if (io->pfrio_esize != sizeof(struct pfr_astats)) {
2773                         error = ENODEV;
2774                         break;
2775                 }
2776                 totlen = io->pfrio_size * sizeof(struct pfr_astats);
2777                 pfrastats = malloc(totlen, M_TEMP, M_WAITOK);
2778                 PF_RULES_RLOCK();
2779                 error = pfr_get_astats(&io->pfrio_table, pfrastats,
2780                     &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL);
2781                 PF_RULES_RUNLOCK();
2782                 if (error == 0)
2783                         error = copyout(pfrastats, io->pfrio_buffer, totlen);
2784                 free(pfrastats, M_TEMP);
2785                 break;
2786         }
2787
2788         case DIOCRCLRASTATS: {
2789                 struct pfioc_table *io = (struct pfioc_table *)addr;
2790                 struct pfr_addr *pfras;
2791                 size_t totlen;
2792
2793                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
2794                         error = ENODEV;
2795                         break;
2796                 }
2797                 totlen = io->pfrio_size * sizeof(struct pfr_addr);
2798                 pfras = malloc(totlen, M_TEMP, M_WAITOK);
2799                 error = copyin(io->pfrio_buffer, pfras, totlen);
2800                 if (error) {
2801                         free(pfras, M_TEMP);
2802                         break;
2803                 }
2804                 PF_RULES_WLOCK();
2805                 error = pfr_clr_astats(&io->pfrio_table, pfras,
2806                     io->pfrio_size, &io->pfrio_nzero, io->pfrio_flags |
2807                     PFR_FLAG_USERIOCTL);
2808                 PF_RULES_WUNLOCK();
2809                 if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK)
2810                         error = copyout(pfras, io->pfrio_buffer, totlen);
2811                 free(pfras, M_TEMP);
2812                 break;
2813         }
2814
2815         case DIOCRTSTADDRS: {
2816                 struct pfioc_table *io = (struct pfioc_table *)addr;
2817                 struct pfr_addr *pfras;
2818                 size_t totlen;
2819
2820                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
2821                         error = ENODEV;
2822                         break;
2823                 }
2824                 totlen = io->pfrio_size * sizeof(struct pfr_addr);
2825                 pfras = malloc(totlen, M_TEMP, M_WAITOK);
2826                 error = copyin(io->pfrio_buffer, pfras, totlen);
2827                 if (error) {
2828                         free(pfras, M_TEMP);
2829                         break;
2830                 }
2831                 PF_RULES_RLOCK();
2832                 error = pfr_tst_addrs(&io->pfrio_table, pfras,
2833                     io->pfrio_size, &io->pfrio_nmatch, io->pfrio_flags |
2834                     PFR_FLAG_USERIOCTL);
2835                 PF_RULES_RUNLOCK();
2836                 if (error == 0)
2837                         error = copyout(pfras, io->pfrio_buffer, totlen);
2838                 free(pfras, M_TEMP);
2839                 break;
2840         }
2841
2842         case DIOCRINADEFINE: {
2843                 struct pfioc_table *io = (struct pfioc_table *)addr;
2844                 struct pfr_addr *pfras;
2845                 size_t totlen;
2846
2847                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
2848                         error = ENODEV;
2849                         break;
2850                 }
2851                 totlen = io->pfrio_size * sizeof(struct pfr_addr);
2852                 pfras = malloc(totlen, M_TEMP, M_WAITOK);
2853                 error = copyin(io->pfrio_buffer, pfras, totlen);
2854                 if (error) {
2855                         free(pfras, M_TEMP);
2856                         break;
2857                 }
2858                 PF_RULES_WLOCK();
2859                 error = pfr_ina_define(&io->pfrio_table, pfras,
2860                     io->pfrio_size, &io->pfrio_nadd, &io->pfrio_naddr,
2861                     io->pfrio_ticket, io->pfrio_flags | PFR_FLAG_USERIOCTL);
2862                 PF_RULES_WUNLOCK();
2863                 free(pfras, M_TEMP);
2864                 break;
2865         }
2866
2867         case DIOCOSFPADD: {
2868                 struct pf_osfp_ioctl *io = (struct pf_osfp_ioctl *)addr;
2869                 PF_RULES_WLOCK();
2870                 error = pf_osfp_add(io);
2871                 PF_RULES_WUNLOCK();
2872                 break;
2873         }
2874
2875         case DIOCOSFPGET: {
2876                 struct pf_osfp_ioctl *io = (struct pf_osfp_ioctl *)addr;
2877                 PF_RULES_RLOCK();
2878                 error = pf_osfp_get(io);
2879                 PF_RULES_RUNLOCK();
2880                 break;
2881         }
2882
2883         case DIOCXBEGIN: {
2884                 struct pfioc_trans      *io = (struct pfioc_trans *)addr;
2885                 struct pfioc_trans_e    *ioes, *ioe;
2886                 size_t                   totlen;
2887                 int                      i;
2888
2889                 if (io->esize != sizeof(*ioe)) {
2890                         error = ENODEV;
2891                         break;
2892                 }
2893                 totlen = sizeof(struct pfioc_trans_e) * io->size;
2894                 ioes = malloc(totlen, M_TEMP, M_WAITOK);
2895                 error = copyin(io->array, ioes, totlen);
2896                 if (error) {
2897                         free(ioes, M_TEMP);
2898                         break;
2899                 }
2900                 PF_RULES_WLOCK();
2901                 for (i = 0, ioe = ioes; i < io->size; i++, ioe++) {
2902                         switch (ioe->rs_num) {
2903 #ifdef ALTQ
2904                         case PF_RULESET_ALTQ:
2905                                 if (ioe->anchor[0]) {
2906                                         PF_RULES_WUNLOCK();
2907                                         free(ioes, M_TEMP);
2908                                         error = EINVAL;
2909                                         goto fail;
2910                                 }
2911                                 if ((error = pf_begin_altq(&ioe->ticket))) {
2912                                         PF_RULES_WUNLOCK();
2913                                         free(ioes, M_TEMP);
2914                                         goto fail;
2915                                 }
2916                                 break;
2917 #endif /* ALTQ */
2918                         case PF_RULESET_TABLE:
2919                             {
2920                                 struct pfr_table table;
2921
2922                                 bzero(&table, sizeof(table));
2923                                 strlcpy(table.pfrt_anchor, ioe->anchor,
2924                                     sizeof(table.pfrt_anchor));
2925                                 if ((error = pfr_ina_begin(&table,
2926                                     &ioe->ticket, NULL, 0))) {
2927                                         PF_RULES_WUNLOCK();
2928                                         free(ioes, M_TEMP);
2929                                         goto fail;
2930                                 }
2931                                 break;
2932                             }
2933                         default:
2934                                 if ((error = pf_begin_rules(&ioe->ticket,
2935                                     ioe->rs_num, ioe->anchor))) {
2936                                         PF_RULES_WUNLOCK();
2937                                         free(ioes, M_TEMP);
2938                                         goto fail;
2939                                 }
2940                                 break;
2941                         }
2942                 }
2943                 PF_RULES_WUNLOCK();
2944                 error = copyout(ioes, io->array, totlen);
2945                 free(ioes, M_TEMP);
2946                 break;
2947         }
2948
2949         case DIOCXROLLBACK: {
2950                 struct pfioc_trans      *io = (struct pfioc_trans *)addr;
2951                 struct pfioc_trans_e    *ioe, *ioes;
2952                 size_t                   totlen;
2953                 int                      i;
2954
2955                 if (io->esize != sizeof(*ioe)) {
2956                         error = ENODEV;
2957                         break;
2958                 }
2959                 totlen = sizeof(struct pfioc_trans_e) * io->size;
2960                 ioes = malloc(totlen, M_TEMP, M_WAITOK);
2961                 error = copyin(io->array, ioes, totlen);
2962                 if (error) {
2963                         free(ioes, M_TEMP);
2964                         break;
2965                 }
2966                 PF_RULES_WLOCK();
2967                 for (i = 0, ioe = ioes; i < io->size; i++, ioe++) {
2968                         switch (ioe->rs_num) {
2969 #ifdef ALTQ
2970                         case PF_RULESET_ALTQ:
2971                                 if (ioe->anchor[0]) {
2972                                         PF_RULES_WUNLOCK();
2973                                         free(ioes, M_TEMP);
2974                                         error = EINVAL;
2975                                         goto fail;
2976                                 }
2977                                 if ((error = pf_rollback_altq(ioe->ticket))) {
2978                                         PF_RULES_WUNLOCK();
2979                                         free(ioes, M_TEMP);
2980                                         goto fail; /* really bad */
2981                                 }
2982                                 break;
2983 #endif /* ALTQ */
2984                         case PF_RULESET_TABLE:
2985                             {
2986                                 struct pfr_table table;
2987
2988                                 bzero(&table, sizeof(table));
2989                                 strlcpy(table.pfrt_anchor, ioe->anchor,
2990                                     sizeof(table.pfrt_anchor));
2991                                 if ((error = pfr_ina_rollback(&table,
2992                                     ioe->ticket, NULL, 0))) {
2993                                         PF_RULES_WUNLOCK();
2994                                         free(ioes, M_TEMP);
2995                                         goto fail; /* really bad */
2996                                 }
2997                                 break;
2998                             }
2999                         default:
3000                                 if ((error = pf_rollback_rules(ioe->ticket,
3001                                     ioe->rs_num, ioe->anchor))) {
3002                                         PF_RULES_WUNLOCK();
3003                                         free(ioes, M_TEMP);
3004                                         goto fail; /* really bad */
3005                                 }
3006                                 break;
3007                         }
3008                 }
3009                 PF_RULES_WUNLOCK();
3010                 free(ioes, M_TEMP);
3011                 break;
3012         }
3013
3014         case DIOCXCOMMIT: {
3015                 struct pfioc_trans      *io = (struct pfioc_trans *)addr;
3016                 struct pfioc_trans_e    *ioe, *ioes;
3017                 struct pf_ruleset       *rs;
3018                 size_t                   totlen;
3019                 int                      i;
3020
3021                 if (io->esize != sizeof(*ioe)) {
3022                         error = ENODEV;
3023                         break;
3024                 }
3025                 totlen = sizeof(struct pfioc_trans_e) * io->size;
3026                 ioes = malloc(totlen, M_TEMP, M_WAITOK);
3027                 error = copyin(io->array, ioes, totlen);
3028                 if (error) {
3029                         free(ioes, M_TEMP);
3030                         break;
3031                 }
3032                 PF_RULES_WLOCK();
3033                 /* First makes sure everything will succeed. */
3034                 for (i = 0, ioe = ioes; i < io->size; i++, ioe++) {
3035                         switch (ioe->rs_num) {
3036 #ifdef ALTQ
3037                         case PF_RULESET_ALTQ:
3038                                 if (ioe->anchor[0]) {
3039                                         PF_RULES_WUNLOCK();
3040                                         free(ioes, M_TEMP);
3041                                         error = EINVAL;
3042                                         goto fail;
3043                                 }
3044                                 if (!V_altqs_inactive_open || ioe->ticket !=
3045                                     V_ticket_altqs_inactive) {
3046                                         PF_RULES_WUNLOCK();
3047                                         free(ioes, M_TEMP);
3048                                         error = EBUSY;
3049                                         goto fail;
3050                                 }
3051                                 break;
3052 #endif /* ALTQ */
3053                         case PF_RULESET_TABLE:
3054                                 rs = pf_find_ruleset(ioe->anchor);
3055                                 if (rs == NULL || !rs->topen || ioe->ticket !=
3056                                     rs->tticket) {
3057                                         PF_RULES_WUNLOCK();
3058                                         free(ioes, M_TEMP);
3059                                         error = EBUSY;
3060                                         goto fail;
3061                                 }
3062                                 break;
3063                         default:
3064                                 if (ioe->rs_num < 0 || ioe->rs_num >=
3065                                     PF_RULESET_MAX) {
3066                                         PF_RULES_WUNLOCK();
3067                                         free(ioes, M_TEMP);
3068                                         error = EINVAL;
3069                                         goto fail;
3070                                 }
3071                                 rs = pf_find_ruleset(ioe->anchor);
3072                                 if (rs == NULL ||
3073                                     !rs->rules[ioe->rs_num].inactive.open ||
3074                                     rs->rules[ioe->rs_num].inactive.ticket !=
3075                                     ioe->ticket) {
3076                                         PF_RULES_WUNLOCK();
3077                                         free(ioes, M_TEMP);
3078                                         error = EBUSY;
3079                                         goto fail;
3080                                 }
3081                                 break;
3082                         }
3083                 }
3084                 /* Now do the commit - no errors should happen here. */
3085                 for (i = 0, ioe = ioes; i < io->size; i++, ioe++) {
3086                         switch (ioe->rs_num) {
3087 #ifdef ALTQ
3088                         case PF_RULESET_ALTQ:
3089                                 if ((error = pf_commit_altq(ioe->ticket))) {
3090                                         PF_RULES_WUNLOCK();
3091                                         free(ioes, M_TEMP);
3092                                         goto fail; /* really bad */
3093                                 }
3094                                 break;
3095 #endif /* ALTQ */
3096                         case PF_RULESET_TABLE:
3097                             {
3098                                 struct pfr_table table;
3099
3100                                 bzero(&table, sizeof(table));
3101                                 strlcpy(table.pfrt_anchor, ioe->anchor,
3102                                     sizeof(table.pfrt_anchor));
3103                                 if ((error = pfr_ina_commit(&table,
3104                                     ioe->ticket, NULL, NULL, 0))) {
3105                                         PF_RULES_WUNLOCK();
3106                                         free(ioes, M_TEMP);
3107                                         goto fail; /* really bad */
3108                                 }
3109                                 break;
3110                             }
3111                         default:
3112                                 if ((error = pf_commit_rules(ioe->ticket,
3113                                     ioe->rs_num, ioe->anchor))) {
3114                                         PF_RULES_WUNLOCK();
3115                                         free(ioes, M_TEMP);
3116                                         goto fail; /* really bad */
3117                                 }
3118                                 break;
3119                         }
3120                 }
3121                 PF_RULES_WUNLOCK();
3122                 free(ioes, M_TEMP);
3123                 break;
3124         }
3125
3126         case DIOCGETSRCNODES: {
3127                 struct pfioc_src_nodes  *psn = (struct pfioc_src_nodes *)addr;
3128                 struct pf_srchash       *sh;
3129                 struct pf_src_node      *n, *p, *pstore;
3130                 uint32_t                 i, nr = 0;
3131
3132                 if (psn->psn_len == 0) {
3133                         for (i = 0, sh = V_pf_srchash; i <= pf_srchashmask;
3134                             i++, sh++) {
3135                                 PF_HASHROW_LOCK(sh);
3136                                 LIST_FOREACH(n, &sh->nodes, entry)
3137                                         nr++;
3138                                 PF_HASHROW_UNLOCK(sh);
3139                         }
3140                         psn->psn_len = sizeof(struct pf_src_node) * nr;
3141                         break;
3142                 }
3143
3144                 p = pstore = malloc(psn->psn_len, M_TEMP, M_WAITOK);
3145                 for (i = 0, sh = V_pf_srchash; i <= pf_srchashmask;
3146                     i++, sh++) {
3147                     PF_HASHROW_LOCK(sh);
3148                     LIST_FOREACH(n, &sh->nodes, entry) {
3149                         int     secs = time_uptime, diff;
3150
3151                         if ((nr + 1) * sizeof(*p) > (unsigned)psn->psn_len)
3152                                 break;
3153
3154                         bcopy(n, p, sizeof(struct pf_src_node));
3155                         if (n->rule.ptr != NULL)
3156                                 p->rule.nr = n->rule.ptr->nr;
3157                         p->creation = secs - p->creation;
3158                         if (p->expire > secs)
3159                                 p->expire -= secs;
3160                         else
3161                                 p->expire = 0;
3162
3163                         /* Adjust the connection rate estimate. */
3164                         diff = secs - n->conn_rate.last;
3165                         if (diff >= n->conn_rate.seconds)
3166                                 p->conn_rate.count = 0;
3167                         else
3168                                 p->conn_rate.count -=
3169                                     n->conn_rate.count * diff /
3170                                     n->conn_rate.seconds;
3171                         p++;
3172                         nr++;
3173                     }
3174                     PF_HASHROW_UNLOCK(sh);
3175                 }
3176                 error = copyout(pstore, psn->psn_src_nodes,
3177                     sizeof(struct pf_src_node) * nr);
3178                 if (error) {
3179                         free(pstore, M_TEMP);
3180                         break;
3181                 }
3182                 psn->psn_len = sizeof(struct pf_src_node) * nr;
3183                 free(pstore, M_TEMP);
3184                 break;
3185         }
3186
3187         case DIOCCLRSRCNODES: {
3188
3189                 pf_clear_srcnodes(NULL);
3190                 pf_purge_expired_src_nodes();
3191                 break;
3192         }
3193
3194         case DIOCKILLSRCNODES:
3195                 pf_kill_srcnodes((struct pfioc_src_node_kill *)addr);
3196                 break;
3197
3198         case DIOCSETHOSTID: {
3199                 u_int32_t       *hostid = (u_int32_t *)addr;
3200
3201                 PF_RULES_WLOCK();
3202                 if (*hostid == 0)
3203                         V_pf_status.hostid = arc4random();
3204                 else
3205                         V_pf_status.hostid = *hostid;
3206                 PF_RULES_WUNLOCK();
3207                 break;
3208         }
3209
3210         case DIOCOSFPFLUSH:
3211                 PF_RULES_WLOCK();
3212                 pf_osfp_flush();
3213                 PF_RULES_WUNLOCK();
3214                 break;
3215
3216         case DIOCIGETIFACES: {
3217                 struct pfioc_iface *io = (struct pfioc_iface *)addr;
3218                 struct pfi_kif *ifstore;
3219                 size_t bufsiz;
3220
3221                 if (io->pfiio_esize != sizeof(struct pfi_kif)) {
3222                         error = ENODEV;
3223                         break;
3224                 }
3225
3226                 bufsiz = io->pfiio_size * sizeof(struct pfi_kif);
3227                 ifstore = malloc(bufsiz, M_TEMP, M_WAITOK);
3228                 PF_RULES_RLOCK();
3229                 pfi_get_ifaces(io->pfiio_name, ifstore, &io->pfiio_size);
3230                 PF_RULES_RUNLOCK();
3231                 error = copyout(ifstore, io->pfiio_buffer, bufsiz);
3232                 free(ifstore, M_TEMP);
3233                 break;
3234         }
3235
3236         case DIOCSETIFFLAG: {
3237                 struct pfioc_iface *io = (struct pfioc_iface *)addr;
3238
3239                 PF_RULES_WLOCK();
3240                 error = pfi_set_flags(io->pfiio_name, io->pfiio_flags);
3241                 PF_RULES_WUNLOCK();
3242                 break;
3243         }
3244
3245         case DIOCCLRIFFLAG: {
3246                 struct pfioc_iface *io = (struct pfioc_iface *)addr;
3247
3248                 PF_RULES_WLOCK();
3249                 error = pfi_clear_flags(io->pfiio_name, io->pfiio_flags);
3250                 PF_RULES_WUNLOCK();
3251                 break;
3252         }
3253
3254         default:
3255                 error = ENODEV;
3256                 break;
3257         }
3258 fail:
3259         if (sx_xlocked(&pf_ioctl_lock))
3260                 sx_xunlock(&pf_ioctl_lock);
3261         CURVNET_RESTORE();
3262
3263         return (error);
3264 }
3265
3266 void
3267 pfsync_state_export(struct pfsync_state *sp, struct pf_state *st)
3268 {
3269         bzero(sp, sizeof(struct pfsync_state));
3270
3271         /* copy from state key */
3272         sp->key[PF_SK_WIRE].addr[0] = st->key[PF_SK_WIRE]->addr[0];
3273         sp->key[PF_SK_WIRE].addr[1] = st->key[PF_SK_WIRE]->addr[1];
3274         sp->key[PF_SK_WIRE].port[0] = st->key[PF_SK_WIRE]->port[0];
3275         sp->key[PF_SK_WIRE].port[1] = st->key[PF_SK_WIRE]->port[1];
3276         sp->key[PF_SK_STACK].addr[0] = st->key[PF_SK_STACK]->addr[0];
3277         sp->key[PF_SK_STACK].addr[1] = st->key[PF_SK_STACK]->addr[1];
3278         sp->key[PF_SK_STACK].port[0] = st->key[PF_SK_STACK]->port[0];
3279         sp->key[PF_SK_STACK].port[1] = st->key[PF_SK_STACK]->port[1];
3280         sp->proto = st->key[PF_SK_WIRE]->proto;
3281         sp->af = st->key[PF_SK_WIRE]->af;
3282
3283         /* copy from state */
3284         strlcpy(sp->ifname, st->kif->pfik_name, sizeof(sp->ifname));
3285         bcopy(&st->rt_addr, &sp->rt_addr, sizeof(sp->rt_addr));
3286         sp->creation = htonl(time_uptime - st->creation);
3287         sp->expire = pf_state_expires(st);
3288         if (sp->expire <= time_uptime)
3289                 sp->expire = htonl(0);
3290         else
3291                 sp->expire = htonl(sp->expire - time_uptime);
3292
3293         sp->direction = st->direction;
3294         sp->log = st->log;
3295         sp->timeout = st->timeout;
3296         sp->state_flags = st->state_flags;
3297         if (st->src_node)
3298                 sp->sync_flags |= PFSYNC_FLAG_SRCNODE;
3299         if (st->nat_src_node)
3300                 sp->sync_flags |= PFSYNC_FLAG_NATSRCNODE;
3301
3302         sp->id = st->id;
3303         sp->creatorid = st->creatorid;
3304         pf_state_peer_hton(&st->src, &sp->src);
3305         pf_state_peer_hton(&st->dst, &sp->dst);
3306
3307         if (st->rule.ptr == NULL)
3308                 sp->rule = htonl(-1);
3309         else
3310                 sp->rule = htonl(st->rule.ptr->nr);
3311         if (st->anchor.ptr == NULL)
3312                 sp->anchor = htonl(-1);
3313         else
3314                 sp->anchor = htonl(st->anchor.ptr->nr);
3315         if (st->nat_rule.ptr == NULL)
3316                 sp->nat_rule = htonl(-1);
3317         else
3318                 sp->nat_rule = htonl(st->nat_rule.ptr->nr);
3319
3320         pf_state_counter_hton(st->packets[0], sp->packets[0]);
3321         pf_state_counter_hton(st->packets[1], sp->packets[1]);
3322         pf_state_counter_hton(st->bytes[0], sp->bytes[0]);
3323         pf_state_counter_hton(st->bytes[1], sp->bytes[1]);
3324
3325 }
3326
3327 static void
3328 pf_tbladdr_copyout(struct pf_addr_wrap *aw)
3329 {
3330         struct pfr_ktable *kt;
3331
3332         KASSERT(aw->type == PF_ADDR_TABLE, ("%s: type %u", __func__, aw->type));
3333
3334         kt = aw->p.tbl;
3335         if (!(kt->pfrkt_flags & PFR_TFLAG_ACTIVE) && kt->pfrkt_root != NULL)
3336                 kt = kt->pfrkt_root;
3337         aw->p.tbl = NULL;
3338         aw->p.tblcnt = (kt->pfrkt_flags & PFR_TFLAG_ACTIVE) ?
3339                 kt->pfrkt_cnt : -1;
3340 }
3341
3342 /*
3343  * XXX - Check for version missmatch!!!
3344  */
3345 static void
3346 pf_clear_states(void)
3347 {
3348         struct pf_state *s;
3349         u_int i;
3350
3351         for (i = 0; i <= pf_hashmask; i++) {
3352                 struct pf_idhash *ih = &V_pf_idhash[i];
3353 relock:
3354                 PF_HASHROW_LOCK(ih);
3355                 LIST_FOREACH(s, &ih->states, entry) {
3356                         s->timeout = PFTM_PURGE;
3357                         /* Don't send out individual delete messages. */
3358                         s->sync_state = PFSTATE_NOSYNC;
3359                         pf_unlink_state(s, PF_ENTER_LOCKED);
3360                         goto relock;
3361                 }
3362                 PF_HASHROW_UNLOCK(ih);
3363         }
3364 }
3365
3366 static int
3367 pf_clear_tables(void)
3368 {
3369         struct pfioc_table io;
3370         int error;
3371
3372         bzero(&io, sizeof(io));
3373
3374         error = pfr_clr_tables(&io.pfrio_table, &io.pfrio_ndel,
3375             io.pfrio_flags);
3376
3377         return (error);
3378 }
3379
3380 static void
3381 pf_clear_srcnodes(struct pf_src_node *n)
3382 {
3383         struct pf_state *s;
3384         int i;
3385
3386         for (i = 0; i <= pf_hashmask; i++) {
3387                 struct pf_idhash *ih = &V_pf_idhash[i];
3388
3389                 PF_HASHROW_LOCK(ih);
3390                 LIST_FOREACH(s, &ih->states, entry) {
3391                         if (n == NULL || n == s->src_node)
3392                                 s->src_node = NULL;
3393                         if (n == NULL || n == s->nat_src_node)
3394                                 s->nat_src_node = NULL;
3395                 }
3396                 PF_HASHROW_UNLOCK(ih);
3397         }
3398
3399         if (n == NULL) {
3400                 struct pf_srchash *sh;
3401
3402                 for (i = 0, sh = V_pf_srchash; i <= pf_srchashmask;
3403                     i++, sh++) {
3404                         PF_HASHROW_LOCK(sh);
3405                         LIST_FOREACH(n, &sh->nodes, entry) {
3406                                 n->expire = 1;
3407                                 n->states = 0;
3408                         }
3409                         PF_HASHROW_UNLOCK(sh);
3410                 }
3411         } else {
3412                 /* XXX: hash slot should already be locked here. */
3413                 n->expire = 1;
3414                 n->states = 0;
3415         }
3416 }
3417
3418 static void
3419 pf_kill_srcnodes(struct pfioc_src_node_kill *psnk)
3420 {
3421         struct pf_src_node_list  kill;
3422
3423         LIST_INIT(&kill);
3424         for (int i = 0; i <= pf_srchashmask; i++) {
3425                 struct pf_srchash *sh = &V_pf_srchash[i];
3426                 struct pf_src_node *sn, *tmp;
3427
3428                 PF_HASHROW_LOCK(sh);
3429                 LIST_FOREACH_SAFE(sn, &sh->nodes, entry, tmp)
3430                         if (PF_MATCHA(psnk->psnk_src.neg,
3431                               &psnk->psnk_src.addr.v.a.addr,
3432                               &psnk->psnk_src.addr.v.a.mask,
3433                               &sn->addr, sn->af) &&
3434                             PF_MATCHA(psnk->psnk_dst.neg,
3435                               &psnk->psnk_dst.addr.v.a.addr,
3436                               &psnk->psnk_dst.addr.v.a.mask,
3437                               &sn->raddr, sn->af)) {
3438                                 pf_unlink_src_node(sn);
3439                                 LIST_INSERT_HEAD(&kill, sn, entry);
3440                                 sn->expire = 1;
3441                         }
3442                 PF_HASHROW_UNLOCK(sh);
3443         }
3444
3445         for (int i = 0; i <= pf_hashmask; i++) {
3446                 struct pf_idhash *ih = &V_pf_idhash[i];
3447                 struct pf_state *s;
3448
3449                 PF_HASHROW_LOCK(ih);
3450                 LIST_FOREACH(s, &ih->states, entry) {
3451                         if (s->src_node && s->src_node->expire == 1)
3452                                 s->src_node = NULL;
3453                         if (s->nat_src_node && s->nat_src_node->expire == 1)
3454                                 s->nat_src_node = NULL;
3455                 }
3456                 PF_HASHROW_UNLOCK(ih);
3457         }
3458
3459         psnk->psnk_killed = pf_free_src_nodes(&kill);
3460 }
3461
3462 /*
3463  * XXX - Check for version missmatch!!!
3464  */
3465
3466 /*
3467  * Duplicate pfctl -Fa operation to get rid of as much as we can.
3468  */
3469 static int
3470 shutdown_pf(void)
3471 {
3472         int error = 0;
3473         u_int32_t t[5];
3474         char nn = '\0';
3475
3476         V_pf_status.running = 0;
3477
3478         counter_u64_free(V_pf_default_rule.states_cur);
3479         counter_u64_free(V_pf_default_rule.states_tot);
3480         counter_u64_free(V_pf_default_rule.src_nodes);
3481
3482         for (int i = 0; i < PFRES_MAX; i++)
3483                 counter_u64_free(V_pf_status.counters[i]);
3484         for (int i = 0; i < LCNT_MAX; i++)
3485                 counter_u64_free(V_pf_status.lcounters[i]);
3486         for (int i = 0; i < FCNT_MAX; i++)
3487                 counter_u64_free(V_pf_status.fcounters[i]);
3488         for (int i = 0; i < SCNT_MAX; i++)
3489                 counter_u64_free(V_pf_status.scounters[i]);
3490
3491         do {
3492                 if ((error = pf_begin_rules(&t[0], PF_RULESET_SCRUB, &nn))
3493                     != 0) {
3494                         DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: SCRUB\n"));
3495                         break;
3496                 }
3497                 if ((error = pf_begin_rules(&t[1], PF_RULESET_FILTER, &nn))
3498                     != 0) {
3499                         DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: FILTER\n"));
3500                         break;          /* XXX: rollback? */
3501                 }
3502                 if ((error = pf_begin_rules(&t[2], PF_RULESET_NAT, &nn))
3503                     != 0) {
3504                         DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: NAT\n"));
3505                         break;          /* XXX: rollback? */
3506                 }
3507                 if ((error = pf_begin_rules(&t[3], PF_RULESET_BINAT, &nn))
3508                     != 0) {
3509                         DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: BINAT\n"));
3510                         break;          /* XXX: rollback? */
3511                 }
3512                 if ((error = pf_begin_rules(&t[4], PF_RULESET_RDR, &nn))
3513                     != 0) {
3514                         DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: RDR\n"));
3515                         break;          /* XXX: rollback? */
3516                 }
3517
3518                 /* XXX: these should always succeed here */
3519                 pf_commit_rules(t[0], PF_RULESET_SCRUB, &nn);
3520                 pf_commit_rules(t[1], PF_RULESET_FILTER, &nn);
3521                 pf_commit_rules(t[2], PF_RULESET_NAT, &nn);
3522                 pf_commit_rules(t[3], PF_RULESET_BINAT, &nn);
3523                 pf_commit_rules(t[4], PF_RULESET_RDR, &nn);
3524
3525                 if ((error = pf_clear_tables()) != 0)
3526                         break;
3527
3528 #ifdef ALTQ
3529                 if ((error = pf_begin_altq(&t[0])) != 0) {
3530                         DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: ALTQ\n"));
3531                         break;
3532                 }
3533                 pf_commit_altq(t[0]);
3534 #endif
3535
3536                 pf_clear_states();
3537
3538                 pf_clear_srcnodes(NULL);
3539
3540                 /* status does not use malloced mem so no need to cleanup */
3541                 /* fingerprints and interfaces have thier own cleanup code */
3542         } while(0);
3543
3544         return (error);
3545 }
3546
3547 #ifdef INET
3548 static int
3549 pf_check_in(void *arg, struct mbuf **m, struct ifnet *ifp, int dir,
3550     struct inpcb *inp)
3551 {
3552         int chk;
3553
3554         chk = pf_test(PF_IN, ifp, m, inp);
3555         if (chk && *m) {
3556                 m_freem(*m);
3557                 *m = NULL;
3558         }
3559
3560         return (chk);
3561 }
3562
3563 static int
3564 pf_check_out(void *arg, struct mbuf **m, struct ifnet *ifp, int dir,
3565     struct inpcb *inp)
3566 {
3567         int chk;
3568
3569         /* We need a proper CSUM befor we start (s. OpenBSD ip_output) */
3570         if ((*m)->m_pkthdr.csum_flags & CSUM_DELAY_DATA) {
3571                 in_delayed_cksum(*m);
3572                 (*m)->m_pkthdr.csum_flags &= ~CSUM_DELAY_DATA;
3573         }
3574
3575         chk = pf_test(PF_OUT, ifp, m, inp);
3576         if (chk && *m) {
3577                 m_freem(*m);
3578                 *m = NULL;
3579         }
3580
3581         return (chk);
3582 }
3583 #endif
3584
3585 #ifdef INET6
3586 static int
3587 pf_check6_in(void *arg, struct mbuf **m, struct ifnet *ifp, int dir,
3588     struct inpcb *inp)
3589 {
3590         int chk;
3591
3592         /*
3593          * In case of loopback traffic IPv6 uses the real interface in
3594          * order to support scoped addresses. In order to support stateful
3595          * filtering we have change this to lo0 as it is the case in IPv4.
3596          */
3597         CURVNET_SET(ifp->if_vnet);
3598         chk = pf_test6(PF_IN, (*m)->m_flags & M_LOOP ? V_loif : ifp, m, inp);
3599         CURVNET_RESTORE();
3600         if (chk && *m) {
3601                 m_freem(*m);
3602                 *m = NULL;
3603         }
3604         return chk;
3605 }
3606
3607 static int
3608 pf_check6_out(void *arg, struct mbuf **m, struct ifnet *ifp, int dir,
3609     struct inpcb *inp)
3610 {
3611         int chk;
3612
3613         /* We need a proper CSUM before we start (s. OpenBSD ip_output) */
3614         if ((*m)->m_pkthdr.csum_flags & CSUM_DELAY_DATA_IPV6) {
3615                 in6_delayed_cksum(*m,
3616                     (*m)->m_pkthdr.len - sizeof(struct ip6_hdr),
3617                     sizeof(struct ip6_hdr));
3618                 (*m)->m_pkthdr.csum_flags &= ~CSUM_DELAY_DATA_IPV6;
3619         }
3620         CURVNET_SET(ifp->if_vnet);
3621         chk = pf_test6(PF_OUT, ifp, m, inp);
3622         CURVNET_RESTORE();
3623         if (chk && *m) {
3624                 m_freem(*m);
3625                 *m = NULL;
3626         }
3627         return chk;
3628 }
3629 #endif /* INET6 */
3630
3631 static int
3632 hook_pf(void)
3633 {
3634 #ifdef INET
3635         struct pfil_head *pfh_inet;
3636 #endif
3637 #ifdef INET6
3638         struct pfil_head *pfh_inet6;
3639 #endif
3640
3641         if (V_pf_pfil_hooked)
3642                 return (0);
3643
3644 #ifdef INET
3645         pfh_inet = pfil_head_get(PFIL_TYPE_AF, AF_INET);
3646         if (pfh_inet == NULL)
3647                 return (ESRCH); /* XXX */
3648         pfil_add_hook(pf_check_in, NULL, PFIL_IN | PFIL_WAITOK, pfh_inet);
3649         pfil_add_hook(pf_check_out, NULL, PFIL_OUT | PFIL_WAITOK, pfh_inet);
3650 #endif
3651 #ifdef INET6
3652         pfh_inet6 = pfil_head_get(PFIL_TYPE_AF, AF_INET6);
3653         if (pfh_inet6 == NULL) {
3654 #ifdef INET
3655                 pfil_remove_hook(pf_check_in, NULL, PFIL_IN | PFIL_WAITOK,
3656                     pfh_inet);
3657                 pfil_remove_hook(pf_check_out, NULL, PFIL_OUT | PFIL_WAITOK,
3658                     pfh_inet);
3659 #endif
3660                 return (ESRCH); /* XXX */
3661         }
3662         pfil_add_hook(pf_check6_in, NULL, PFIL_IN | PFIL_WAITOK, pfh_inet6);
3663         pfil_add_hook(pf_check6_out, NULL, PFIL_OUT | PFIL_WAITOK, pfh_inet6);
3664 #endif
3665
3666         V_pf_pfil_hooked = 1;
3667         return (0);
3668 }
3669
3670 static int
3671 dehook_pf(void)
3672 {
3673 #ifdef INET
3674         struct pfil_head *pfh_inet;
3675 #endif
3676 #ifdef INET6
3677         struct pfil_head *pfh_inet6;
3678 #endif
3679
3680         if (V_pf_pfil_hooked == 0)
3681                 return (0);
3682
3683 #ifdef INET
3684         pfh_inet = pfil_head_get(PFIL_TYPE_AF, AF_INET);
3685         if (pfh_inet == NULL)
3686                 return (ESRCH); /* XXX */
3687         pfil_remove_hook(pf_check_in, NULL, PFIL_IN | PFIL_WAITOK,
3688             pfh_inet);
3689         pfil_remove_hook(pf_check_out, NULL, PFIL_OUT | PFIL_WAITOK,
3690             pfh_inet);
3691 #endif
3692 #ifdef INET6
3693         pfh_inet6 = pfil_head_get(PFIL_TYPE_AF, AF_INET6);
3694         if (pfh_inet6 == NULL)
3695                 return (ESRCH); /* XXX */
3696         pfil_remove_hook(pf_check6_in, NULL, PFIL_IN | PFIL_WAITOK,
3697             pfh_inet6);
3698         pfil_remove_hook(pf_check6_out, NULL, PFIL_OUT | PFIL_WAITOK,
3699             pfh_inet6);
3700 #endif
3701
3702         V_pf_pfil_hooked = 0;
3703         return (0);
3704 }
3705
3706 static int
3707 pf_load(void)
3708 {
3709         int error;
3710
3711         VNET_ITERATOR_DECL(vnet_iter);
3712
3713         VNET_LIST_RLOCK();
3714         VNET_FOREACH(vnet_iter) {
3715                 CURVNET_SET(vnet_iter);
3716                 V_pf_pfil_hooked = 0;
3717                 V_pf_end_threads = 0;
3718                 TAILQ_INIT(&V_pf_tags);
3719                 TAILQ_INIT(&V_pf_qids);
3720                 CURVNET_RESTORE();
3721         }
3722         VNET_LIST_RUNLOCK();
3723
3724         rw_init(&pf_rules_lock, "pf rulesets");
3725         sx_init(&pf_ioctl_lock, "pf ioctl");
3726
3727         pf_dev = make_dev(&pf_cdevsw, 0, 0, 0, 0600, PF_NAME);
3728         if ((error = pfattach()) != 0)
3729                 return (error);
3730
3731         return (0);
3732 }
3733
3734 static int
3735 pf_unload(void)
3736 {
3737         int error = 0;
3738
3739         V_pf_status.running = 0;
3740         swi_remove(V_pf_swi_cookie);
3741         error = dehook_pf();
3742         if (error) {
3743                 /*
3744                  * Should not happen!
3745                  * XXX Due to error code ESRCH, kldunload will show
3746                  * a message like 'No such process'.
3747                  */
3748                 printf("%s : pfil unregisteration fail\n", __FUNCTION__);
3749                 return error;
3750         }
3751         PF_RULES_WLOCK();
3752         shutdown_pf();
3753         V_pf_end_threads = 1;
3754         while (V_pf_end_threads < 2) {
3755                 wakeup_one(pf_purge_thread);
3756                 rw_sleep(pf_purge_thread, &pf_rules_lock, 0, "pftmo", 0);
3757         }
3758         PF_RULES_WUNLOCK();
3759         pf_normalize_cleanup();
3760         pfi_cleanup();
3761         pfr_cleanup();
3762         pf_osfp_flush();
3763         pf_cleanup();
3764         if (IS_DEFAULT_VNET(curvnet))
3765                 pf_mtag_cleanup();
3766         destroy_dev(pf_dev);
3767         rw_destroy(&pf_rules_lock);
3768         sx_destroy(&pf_ioctl_lock);
3769
3770         return (error);
3771 }
3772
3773 static int
3774 pf_modevent(module_t mod, int type, void *data)
3775 {
3776         int error = 0;
3777
3778         switch(type) {
3779         case MOD_LOAD:
3780                 error = pf_load();
3781                 break;
3782         case MOD_QUIESCE:
3783                 /*
3784                  * Module should not be unloaded due to race conditions.
3785                  */
3786                 error = EBUSY;
3787                 break;
3788         case MOD_UNLOAD:
3789                 error = pf_unload();
3790                 break;
3791         default:
3792                 error = EINVAL;
3793                 break;
3794         }
3795
3796         return (error);
3797 }
3798
3799 static moduledata_t pf_mod = {
3800         "pf",
3801         pf_modevent,
3802         0
3803 };
3804
3805 DECLARE_MODULE(pf, pf_mod, SI_SUB_PSEUDO, SI_ORDER_FIRST);
3806 MODULE_VERSION(pf, PF_MODVER);