sys/netpfil/pf/pf_ioctl.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause
   3  *
   4  * Copyright (c) 2001 Daniel Hartmeier
   5  * Copyright (c) 2002,2003 Henning Brauer
   6  * Copyright (c) 2012 Gleb Smirnoff <glebius@FreeBSD.org>
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  *    - Redistributions of source code must retain the above copyright
  14  *      notice, this list of conditions and the following disclaimer.
  15  *    - Redistributions in binary form must reproduce the above
  16  *      copyright notice, this list of conditions and the following
  17  *      disclaimer in the documentation and/or other materials provided
  18  *      with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  23  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  24  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  26  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  27  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  28  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  30  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31  * POSSIBILITY OF SUCH DAMAGE.
  32  *
  33  * Effort sponsored in part by the Defense Advanced Research Projects
  34  * Agency (DARPA) and Air Force Research Laboratory, Air Force
  35  * Materiel Command, USAF, under agreement number F30602-01-2-0537.
  36  *
  37  *      $OpenBSD: pf_ioctl.c,v 1.213 2009/02/15 21:46:12 mbalmer Exp $
  38  */
  39
  40 #include <sys/cdefs.h>
  41 __FBSDID("$FreeBSD$");
  42
  43 #include "opt_inet.h"
  44 #include "opt_inet6.h"
  45 #include "opt_bpf.h"
  46 #include "opt_pf.h"
  47
  48 #include <sys/param.h>
  49 #include <sys/_bitset.h>
  50 #include <sys/bitset.h>
  51 #include <sys/bus.h>
  52 #include <sys/conf.h>
  53 #include <sys/endian.h>
  54 #include <sys/fcntl.h>
  55 #include <sys/filio.h>
  56 #include <sys/hash.h>
  57 #include <sys/interrupt.h>
  58 #include <sys/jail.h>
  59 #include <sys/kernel.h>
  60 #include <sys/kthread.h>
  61 #include <sys/lock.h>
  62 #include <sys/mbuf.h>
  63 #include <sys/module.h>
  64 #include <sys/proc.h>
  65 #include <sys/smp.h>
  66 #include <sys/socket.h>
  67 #include <sys/sysctl.h>
  68 #include <sys/md5.h>
  69 #include <sys/ucred.h>
  70
  71 #include <net/if.h>
  72 #include <net/if_var.h>
  73 #include <net/vnet.h>
  74 #include <net/route.h>
  75 #include <net/pfil.h>
  76 #include <net/pfvar.h>
  77 #include <net/if_pfsync.h>
  78 #include <net/if_pflog.h>
  79
  80 #include <netinet/in.h>
  81 #include <netinet/ip.h>
  82 #include <netinet/ip_var.h>
  83 #include <netinet6/ip6_var.h>
  84 #include <netinet/ip_icmp.h>
  85
  86 #ifdef INET6
  87 #include <netinet/ip6.h>
  88 #endif /* INET6 */
  89
  90 #ifdef ALTQ
  91 #include <net/altq/altq.h>
  92 #endif
  93
  94 static struct pf_pool   *pf_get_pool(char *, u_int32_t, u_int8_t, u_int32_t,
  95                             u_int8_t, u_int8_t, u_int8_t);
  96
  97 static void              pf_mv_pool(struct pf_palist *, struct pf_palist *);
  98 static void              pf_empty_pool(struct pf_palist *);
  99 static int               pfioctl(struct cdev *, u_long, caddr_t, int,
 100                             struct thread *);
 101 #ifdef ALTQ
 102 static int               pf_begin_altq(u_int32_t *);
 103 static int               pf_rollback_altq(u_int32_t);
 104 static int               pf_commit_altq(u_int32_t);
 105 static int               pf_enable_altq(struct pf_altq *);
 106 static int               pf_disable_altq(struct pf_altq *);
 107 static u_int32_t         pf_qname2qid(char *);
 108 static void              pf_qid_unref(u_int32_t);
 109 #endif /* ALTQ */
 110 static int               pf_begin_rules(u_int32_t *, int, const char *);
 111 static int               pf_rollback_rules(u_int32_t, int, char *);
 112 static int               pf_setup_pfsync_matching(struct pf_ruleset *);
 113 static void              pf_hash_rule(MD5_CTX *, struct pf_rule *);
 114 static void              pf_hash_rule_addr(MD5_CTX *, struct pf_rule_addr *);
 115 static int               pf_commit_rules(u_int32_t, int, char *);
 116 static int               pf_addr_setup(struct pf_ruleset *,
 117                             struct pf_addr_wrap *, sa_family_t);
 118 static void              pf_addr_copyout(struct pf_addr_wrap *);
 119 #ifdef ALTQ
 120 static int               pf_export_kaltq(struct pf_altq *,
 121                             struct pfioc_altq_v1 *, size_t);
 122 static int               pf_import_kaltq(struct pfioc_altq_v1 *,
 123                             struct pf_altq *, size_t);
 124 #endif /* ALTQ */
 125
 126 VNET_DEFINE(struct pf_rule,     pf_default_rule);
 127
 128 #ifdef ALTQ
 129 VNET_DEFINE_STATIC(int,         pf_altq_running);
 130 #define V_pf_altq_running       VNET(pf_altq_running)
 131 #endif
 132
 133 #define TAGID_MAX        50000
 134 struct pf_tagname {
 135         TAILQ_ENTRY(pf_tagname) namehash_entries;
 136         TAILQ_ENTRY(pf_tagname) taghash_entries;
 137         char                    name[PF_TAG_NAME_SIZE];
 138         uint16_t                tag;
 139         int                     ref;
 140 };
 141
 142 struct pf_tagset {
 143         TAILQ_HEAD(, pf_tagname)        *namehash;
 144         TAILQ_HEAD(, pf_tagname)        *taghash;
 145         unsigned int                     mask;
 146         uint32_t                         seed;
 147         BITSET_DEFINE(, TAGID_MAX)       avail;
 148 };
 149
 150 VNET_DEFINE(struct pf_tagset, pf_tags);
 151 #define V_pf_tags       VNET(pf_tags)
 152 static unsigned int     pf_rule_tag_hashsize;
 153 #define PF_RULE_TAG_HASH_SIZE_DEFAULT   128
 154 SYSCTL_UINT(_net_pf, OID_AUTO, rule_tag_hashsize, CTLFLAG_RDTUN,
 155     &pf_rule_tag_hashsize, PF_RULE_TAG_HASH_SIZE_DEFAULT,
 156     "Size of pf(4) rule tag hashtable");
 157
 158 #ifdef ALTQ
 159 VNET_DEFINE(struct pf_tagset, pf_qids);
 160 #define V_pf_qids       VNET(pf_qids)
 161 static unsigned int     pf_queue_tag_hashsize;
 162 #define PF_QUEUE_TAG_HASH_SIZE_DEFAULT  128
 163 SYSCTL_UINT(_net_pf, OID_AUTO, queue_tag_hashsize, CTLFLAG_RDTUN,
 164     &pf_queue_tag_hashsize, PF_QUEUE_TAG_HASH_SIZE_DEFAULT,
 165     "Size of pf(4) queue tag hashtable");
 166 #endif
 167 VNET_DEFINE(uma_zone_t,  pf_tag_z);
 168 #define V_pf_tag_z               VNET(pf_tag_z)
 169 static MALLOC_DEFINE(M_PFALTQ, "pf_altq", "pf(4) altq configuration db");
 170 static MALLOC_DEFINE(M_PFRULE, "pf_rule", "pf(4) rules");
 171
 172 #if (PF_QNAME_SIZE != PF_TAG_NAME_SIZE)
 173 #error PF_QNAME_SIZE must be equal to PF_TAG_NAME_SIZE
 174 #endif
 175
 176 static void              pf_init_tagset(struct pf_tagset *, unsigned int *,
 177                             unsigned int);
 178 static void              pf_cleanup_tagset(struct pf_tagset *);
 179 static uint16_t          tagname2hashindex(const struct pf_tagset *, const char *);
 180 static uint16_t          tag2hashindex(const struct pf_tagset *, uint16_t);
 181 static u_int16_t         tagname2tag(struct pf_tagset *, char *);
 182 static u_int16_t         pf_tagname2tag(char *);
 183 static void              tag_unref(struct pf_tagset *, u_int16_t);
 184
 185 #define DPFPRINTF(n, x) if (V_pf_status.debug >= (n)) printf x
 186
 187 struct cdev *pf_dev;
 188
 189 /*
 190  * XXX - These are new and need to be checked when moveing to a new version
 191  */
 192 static void              pf_clear_states(void);
 193 static int               pf_clear_tables(void);
 194 static void              pf_clear_srcnodes(struct pf_src_node *);
 195 static void              pf_kill_srcnodes(struct pfioc_src_node_kill *);
 196 static void              pf_tbladdr_copyout(struct pf_addr_wrap *);
 197
 198 /*
 199  * Wrapper functions for pfil(9) hooks
 200  */
 201 #ifdef INET
 202 static pfil_return_t pf_check_in(struct mbuf **m, struct ifnet *ifp,
 203     int flags, void *ruleset __unused, struct inpcb *inp);
 204 static pfil_return_t pf_check_out(struct mbuf **m, struct ifnet *ifp,
 205     int flags, void *ruleset __unused, struct inpcb *inp);
 206 #endif
 207 #ifdef INET6
 208 static pfil_return_t pf_check6_in(struct mbuf **m, struct ifnet *ifp,
 209     int flags, void *ruleset __unused, struct inpcb *inp);
 210 static pfil_return_t pf_check6_out(struct mbuf **m, struct ifnet *ifp,
 211     int flags, void *ruleset __unused, struct inpcb *inp);
 212 #endif
 213
 214 static int              hook_pf(void);
 215 static int              dehook_pf(void);
 216 static int              shutdown_pf(void);
 217 static int              pf_load(void);
 218 static void             pf_unload(void);
 219
 220 static struct cdevsw pf_cdevsw = {
 221         .d_ioctl =      pfioctl,
 222         .d_name =       PF_NAME,
 223         .d_version =    D_VERSION,
 224 };
 225
 226 volatile VNET_DEFINE_STATIC(int, pf_pfil_hooked);
 227 #define V_pf_pfil_hooked        VNET(pf_pfil_hooked)
 228
 229 /*
 230  * We need a flag that is neither hooked nor running to know when
 231  * the VNET is "valid".  We primarily need this to control (global)
 232  * external event, e.g., eventhandlers.
 233  */
 234 VNET_DEFINE(int, pf_vnet_active);
 235 #define V_pf_vnet_active        VNET(pf_vnet_active)
 236
 237 int pf_end_threads;
 238 struct proc *pf_purge_proc;
 239
 240 struct rmlock                   pf_rules_lock;
 241 struct sx                       pf_ioctl_lock;
 242 struct sx                       pf_end_lock;
 243
 244 /* pfsync */
 245 VNET_DEFINE(pfsync_state_import_t *, pfsync_state_import_ptr);
 246 VNET_DEFINE(pfsync_insert_state_t *, pfsync_insert_state_ptr);
 247 VNET_DEFINE(pfsync_update_state_t *, pfsync_update_state_ptr);
 248 VNET_DEFINE(pfsync_delete_state_t *, pfsync_delete_state_ptr);
 249 VNET_DEFINE(pfsync_clear_states_t *, pfsync_clear_states_ptr);
 250 VNET_DEFINE(pfsync_defer_t *, pfsync_defer_ptr);
 251 pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr;
 252
 253 /* pflog */
 254 pflog_packet_t                  *pflog_packet_ptr = NULL;
 255
 256 extern u_long   pf_ioctl_maxcount;
 257
 258 static void
 259 pfattach_vnet(void)
 260 {
 261         u_int32_t *my_timeout = V_pf_default_rule.timeout;
 262
 263         pf_initialize();
 264         pfr_initialize();
 265         pfi_initialize_vnet();
 266         pf_normalize_init();
 267
 268         V_pf_limits[PF_LIMIT_STATES].limit = PFSTATE_HIWAT;
 269         V_pf_limits[PF_LIMIT_SRC_NODES].limit = PFSNODE_HIWAT;
 270
 271         RB_INIT(&V_pf_anchors);
 272         pf_init_ruleset(&pf_main_ruleset);
 273
 274         /* default rule should never be garbage collected */
 275         V_pf_default_rule.entries.tqe_prev = &V_pf_default_rule.entries.tqe_next;
 276 #ifdef PF_DEFAULT_TO_DROP
 277         V_pf_default_rule.action = PF_DROP;
 278 #else
 279         V_pf_default_rule.action = PF_PASS;
 280 #endif
 281         V_pf_default_rule.nr = -1;
 282         V_pf_default_rule.rtableid = -1;
 283
 284         V_pf_default_rule.states_cur = counter_u64_alloc(M_WAITOK);
 285         V_pf_default_rule.states_tot = counter_u64_alloc(M_WAITOK);
 286         V_pf_default_rule.src_nodes = counter_u64_alloc(M_WAITOK);
 287
 288         /* initialize default timeouts */
 289         my_timeout[PFTM_TCP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL;
 290         my_timeout[PFTM_TCP_OPENING] = PFTM_TCP_OPENING_VAL;
 291         my_timeout[PFTM_TCP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL;
 292         my_timeout[PFTM_TCP_CLOSING] = PFTM_TCP_CLOSING_VAL;
 293         my_timeout[PFTM_TCP_FIN_WAIT] = PFTM_TCP_FIN_WAIT_VAL;
 294         my_timeout[PFTM_TCP_CLOSED] = PFTM_TCP_CLOSED_VAL;
 295         my_timeout[PFTM_UDP_FIRST_PACKET] = PFTM_UDP_FIRST_PACKET_VAL;
 296         my_timeout[PFTM_UDP_SINGLE] = PFTM_UDP_SINGLE_VAL;
 297         my_timeout[PFTM_UDP_MULTIPLE] = PFTM_UDP_MULTIPLE_VAL;
 298         my_timeout[PFTM_ICMP_FIRST_PACKET] = PFTM_ICMP_FIRST_PACKET_VAL;
 299         my_timeout[PFTM_ICMP_ERROR_REPLY] = PFTM_ICMP_ERROR_REPLY_VAL;
 300         my_timeout[PFTM_OTHER_FIRST_PACKET] = PFTM_OTHER_FIRST_PACKET_VAL;
 301         my_timeout[PFTM_OTHER_SINGLE] = PFTM_OTHER_SINGLE_VAL;
 302         my_timeout[PFTM_OTHER_MULTIPLE] = PFTM_OTHER_MULTIPLE_VAL;
 303         my_timeout[PFTM_FRAG] = PFTM_FRAG_VAL;
 304         my_timeout[PFTM_INTERVAL] = PFTM_INTERVAL_VAL;
 305         my_timeout[PFTM_SRC_NODE] = PFTM_SRC_NODE_VAL;
 306         my_timeout[PFTM_TS_DIFF] = PFTM_TS_DIFF_VAL;
 307         my_timeout[PFTM_ADAPTIVE_START] = PFSTATE_ADAPT_START;
 308         my_timeout[PFTM_ADAPTIVE_END] = PFSTATE_ADAPT_END;
 309
 310         bzero(&V_pf_status, sizeof(V_pf_status));
 311         V_pf_status.debug = PF_DEBUG_URGENT;
 312
 313         V_pf_pfil_hooked = 0;
 314
 315         /* XXX do our best to avoid a conflict */
 316         V_pf_status.hostid = arc4random();
 317
 318         for (int i = 0; i < PFRES_MAX; i++)
 319                 V_pf_status.counters[i] = counter_u64_alloc(M_WAITOK);
 320         for (int i = 0; i < LCNT_MAX; i++)
 321                 V_pf_status.lcounters[i] = counter_u64_alloc(M_WAITOK);
 322         for (int i = 0; i < FCNT_MAX; i++)
 323                 V_pf_status.fcounters[i] = counter_u64_alloc(M_WAITOK);
 324         for (int i = 0; i < SCNT_MAX; i++)
 325                 V_pf_status.scounters[i] = counter_u64_alloc(M_WAITOK);
 326
 327         if (swi_add(NULL, "pf send", pf_intr, curvnet, SWI_NET,
 328             INTR_MPSAFE, &V_pf_swi_cookie) != 0)
 329                 /* XXXGL: leaked all above. */
 330                 return;
 331 }
 332
 333
 334 static struct pf_pool *
 335 pf_get_pool(char *anchor, u_int32_t ticket, u_int8_t rule_action,
 336     u_int32_t rule_number, u_int8_t r_last, u_int8_t active,
 337     u_int8_t check_ticket)
 338 {
 339         struct pf_ruleset       *ruleset;
 340         struct pf_rule          *rule;
 341         int                      rs_num;
 342
 343         ruleset = pf_find_ruleset(anchor);
 344         if (ruleset == NULL)
 345                 return (NULL);
 346         rs_num = pf_get_ruleset_number(rule_action);
 347         if (rs_num >= PF_RULESET_MAX)
 348                 return (NULL);
 349         if (active) {
 350                 if (check_ticket && ticket !=
 351                     ruleset->rules[rs_num].active.ticket)
 352                         return (NULL);
 353                 if (r_last)
 354                         rule = TAILQ_LAST(ruleset->rules[rs_num].active.ptr,
 355                             pf_rulequeue);
 356                 else
 357                         rule = TAILQ_FIRST(ruleset->rules[rs_num].active.ptr);
 358         } else {
 359                 if (check_ticket && ticket !=
 360                     ruleset->rules[rs_num].inactive.ticket)
 361                         return (NULL);
 362                 if (r_last)
 363                         rule = TAILQ_LAST(ruleset->rules[rs_num].inactive.ptr,
 364                             pf_rulequeue);
 365                 else
 366                         rule = TAILQ_FIRST(ruleset->rules[rs_num].inactive.ptr);
 367         }
 368         if (!r_last) {
 369                 while ((rule != NULL) && (rule->nr != rule_number))
 370                         rule = TAILQ_NEXT(rule, entries);
 371         }
 372         if (rule == NULL)
 373                 return (NULL);
 374
 375         return (&rule->rpool);
 376 }
 377
 378 static void
 379 pf_mv_pool(struct pf_palist *poola, struct pf_palist *poolb)
 380 {
 381         struct pf_pooladdr      *mv_pool_pa;
 382
 383         while ((mv_pool_pa = TAILQ_FIRST(poola)) != NULL) {
 384                 TAILQ_REMOVE(poola, mv_pool_pa, entries);
 385                 TAILQ_INSERT_TAIL(poolb, mv_pool_pa, entries);
 386         }
 387 }
 388
 389 static void
 390 pf_empty_pool(struct pf_palist *poola)
 391 {
 392         struct pf_pooladdr *pa;
 393
 394         while ((pa = TAILQ_FIRST(poola)) != NULL) {
 395                 switch (pa->addr.type) {
 396                 case PF_ADDR_DYNIFTL:
 397                         pfi_dynaddr_remove(pa->addr.p.dyn);
 398                         break;
 399                 case PF_ADDR_TABLE:
 400                         /* XXX: this could be unfinished pooladdr on pabuf */
 401                         if (pa->addr.p.tbl != NULL)
 402                                 pfr_detach_table(pa->addr.p.tbl);
 403                         break;
 404                 }
 405                 if (pa->kif)
 406                         pfi_kif_unref(pa->kif);
 407                 TAILQ_REMOVE(poola, pa, entries);
 408                 free(pa, M_PFRULE);
 409         }
 410 }
 411
 412 static void
 413 pf_unlink_rule(struct pf_rulequeue *rulequeue, struct pf_rule *rule)
 414 {
 415
 416         PF_RULES_WASSERT();
 417
 418         TAILQ_REMOVE(rulequeue, rule, entries);
 419
 420         PF_UNLNKDRULES_LOCK();
 421         rule->rule_flag |= PFRULE_REFS;
 422         TAILQ_INSERT_TAIL(&V_pf_unlinked_rules, rule, entries);
 423         PF_UNLNKDRULES_UNLOCK();
 424 }
 425
 426 void
 427 pf_free_rule(struct pf_rule *rule)
 428 {
 429
 430         PF_RULES_WASSERT();
 431
 432         if (rule->tag)
 433                 tag_unref(&V_pf_tags, rule->tag);
 434         if (rule->match_tag)
 435                 tag_unref(&V_pf_tags, rule->match_tag);
 436 #ifdef ALTQ
 437         if (rule->pqid != rule->qid)
 438                 pf_qid_unref(rule->pqid);
 439         pf_qid_unref(rule->qid);
 440 #endif
 441         switch (rule->src.addr.type) {
 442         case PF_ADDR_DYNIFTL:
 443                 pfi_dynaddr_remove(rule->src.addr.p.dyn);
 444                 break;
 445         case PF_ADDR_TABLE:
 446                 pfr_detach_table(rule->src.addr.p.tbl);
 447                 break;
 448         }
 449         switch (rule->dst.addr.type) {
 450         case PF_ADDR_DYNIFTL:
 451                 pfi_dynaddr_remove(rule->dst.addr.p.dyn);
 452                 break;
 453         case PF_ADDR_TABLE:
 454                 pfr_detach_table(rule->dst.addr.p.tbl);
 455                 break;
 456         }
 457         if (rule->overload_tbl)
 458                 pfr_detach_table(rule->overload_tbl);
 459         if (rule->kif)
 460                 pfi_kif_unref(rule->kif);
 461         pf_anchor_remove(rule);
 462         pf_empty_pool(&rule->rpool.list);
 463         counter_u64_free(rule->states_cur);
 464         counter_u64_free(rule->states_tot);
 465         counter_u64_free(rule->src_nodes);
 466         free(rule, M_PFRULE);
 467 }
 468
 469 static void
 470 pf_init_tagset(struct pf_tagset *ts, unsigned int *tunable_size,
 471     unsigned int default_size)
 472 {
 473         unsigned int i;
 474         unsigned int hashsize;
 475
 476         if (*tunable_size == 0 || !powerof2(*tunable_size))
 477                 *tunable_size = default_size;
 478
 479         hashsize = *tunable_size;
 480         ts->namehash = mallocarray(hashsize, sizeof(*ts->namehash), M_PFHASH,
 481             M_WAITOK);
 482         ts->taghash = mallocarray(hashsize, sizeof(*ts->taghash), M_PFHASH,
 483             M_WAITOK);
 484         ts->mask = hashsize - 1;
 485         ts->seed = arc4random();
 486         for (i = 0; i < hashsize; i++) {
 487                 TAILQ_INIT(&ts->namehash[i]);
 488                 TAILQ_INIT(&ts->taghash[i]);
 489         }
 490         BIT_FILL(TAGID_MAX, &ts->avail);
 491 }
 492
 493 static void
 494 pf_cleanup_tagset(struct pf_tagset *ts)
 495 {
 496         unsigned int i;
 497         unsigned int hashsize;
 498         struct pf_tagname *t, *tmp;
 499
 500         /*
 501          * Only need to clean up one of the hashes as each tag is hashed
 502          * into each table.
 503          */
 504         hashsize = ts->mask + 1;
 505         for (i = 0; i < hashsize; i++)
 506                 TAILQ_FOREACH_SAFE(t, &ts->namehash[i], namehash_entries, tmp)
 507                         uma_zfree(V_pf_tag_z, t);
 508
 509         free(ts->namehash, M_PFHASH);
 510         free(ts->taghash, M_PFHASH);
 511 }
 512
 513 static uint16_t
 514 tagname2hashindex(const struct pf_tagset *ts, const char *tagname)
 515 {
 516
 517         return (murmur3_32_hash(tagname, strlen(tagname), ts->seed) & ts->mask);
 518 }
 519
 520 static uint16_t
 521 tag2hashindex(const struct pf_tagset *ts, uint16_t tag)
 522 {
 523
 524         return (tag & ts->mask);
 525 }
 526
 527 static u_int16_t
 528 tagname2tag(struct pf_tagset *ts, char *tagname)
 529 {
 530         struct pf_tagname       *tag;
 531         u_int32_t                index;
 532         u_int16_t                new_tagid;
 533
 534         PF_RULES_WASSERT();
 535
 536         index = tagname2hashindex(ts, tagname);
 537         TAILQ_FOREACH(tag, &ts->namehash[index], namehash_entries)
 538                 if (strcmp(tagname, tag->name) == 0) {
 539                         tag->ref++;
 540                         return (tag->tag);
 541                 }
 542
 543         /*
 544          * new entry
 545          *
 546          * to avoid fragmentation, we do a linear search from the beginning
 547          * and take the first free slot we find.
 548          */
 549         new_tagid = BIT_FFS(TAGID_MAX, &ts->avail);
 550         /*
 551          * Tags are 1-based, with valid tags in the range [1..TAGID_MAX].
 552          * BIT_FFS() returns a 1-based bit number, with 0 indicating no bits
 553          * set.  It may also return a bit number greater than TAGID_MAX due
 554          * to rounding of the number of bits in the vector up to a multiple
 555          * of the vector word size at declaration/allocation time.
 556          */
 557         if ((new_tagid == 0) || (new_tagid > TAGID_MAX))
 558                 return (0);
 559
 560         /* Mark the tag as in use.  Bits are 0-based for BIT_CLR() */
 561         BIT_CLR(TAGID_MAX, new_tagid - 1, &ts->avail);
 562
 563         /* allocate and fill new struct pf_tagname */
 564         tag = uma_zalloc(V_pf_tag_z, M_NOWAIT);
 565         if (tag == NULL)
 566                 return (0);
 567         strlcpy(tag->name, tagname, sizeof(tag->name));
 568         tag->tag = new_tagid;
 569         tag->ref = 1;
 570
 571         /* Insert into namehash */
 572         TAILQ_INSERT_TAIL(&ts->namehash[index], tag, namehash_entries);
 573
 574         /* Insert into taghash */
 575         index = tag2hashindex(ts, new_tagid);
 576         TAILQ_INSERT_TAIL(&ts->taghash[index], tag, taghash_entries);
 577
 578         return (tag->tag);
 579 }
 580
 581 static void
 582 tag_unref(struct pf_tagset *ts, u_int16_t tag)
 583 {
 584         struct pf_tagname       *t;
 585         uint16_t                 index;
 586
 587         PF_RULES_WASSERT();
 588
 589         index = tag2hashindex(ts, tag);
 590         TAILQ_FOREACH(t, &ts->taghash[index], taghash_entries)
 591                 if (tag == t->tag) {
 592                         if (--t->ref == 0) {
 593                                 TAILQ_REMOVE(&ts->taghash[index], t,
 594                                     taghash_entries);
 595                                 index = tagname2hashindex(ts, t->name);
 596                                 TAILQ_REMOVE(&ts->namehash[index], t,
 597                                     namehash_entries);
 598                                 /* Bits are 0-based for BIT_SET() */
 599                                 BIT_SET(TAGID_MAX, tag - 1, &ts->avail);
 600                                 uma_zfree(V_pf_tag_z, t);
 601                         }
 602                         break;
 603                 }
 604 }
 605
 606 static u_int16_t
 607 pf_tagname2tag(char *tagname)
 608 {
 609         return (tagname2tag(&V_pf_tags, tagname));
 610 }
 611
 612 #ifdef ALTQ
 613 static u_int32_t
 614 pf_qname2qid(char *qname)
 615 {
 616         return ((u_int32_t)tagname2tag(&V_pf_qids, qname));
 617 }
 618
 619 static void
 620 pf_qid_unref(u_int32_t qid)
 621 {
 622         tag_unref(&V_pf_qids, (u_int16_t)qid);
 623 }
 624
 625 static int
 626 pf_begin_altq(u_int32_t *ticket)
 627 {
 628         struct pf_altq  *altq, *tmp;
 629         int              error = 0;
 630
 631         PF_RULES_WASSERT();
 632
 633         /* Purge the old altq lists */
 634         TAILQ_FOREACH_SAFE(altq, V_pf_altq_ifs_inactive, entries, tmp) {
 635                 if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) {
 636                         /* detach and destroy the discipline */
 637                         error = altq_remove(altq);
 638                 }
 639                 free(altq, M_PFALTQ);
 640         }
 641         TAILQ_INIT(V_pf_altq_ifs_inactive);
 642         TAILQ_FOREACH_SAFE(altq, V_pf_altqs_inactive, entries, tmp) {
 643                 pf_qid_unref(altq->qid);
 644                 free(altq, M_PFALTQ);
 645         }
 646         TAILQ_INIT(V_pf_altqs_inactive);
 647         if (error)
 648                 return (error);
 649         *ticket = ++V_ticket_altqs_inactive;
 650         V_altqs_inactive_open = 1;
 651         return (0);
 652 }
 653
 654 static int
 655 pf_rollback_altq(u_int32_t ticket)
 656 {
 657         struct pf_altq  *altq, *tmp;
 658         int              error = 0;
 659
 660         PF_RULES_WASSERT();
 661
 662         if (!V_altqs_inactive_open || ticket != V_ticket_altqs_inactive)
 663                 return (0);
 664         /* Purge the old altq lists */
 665         TAILQ_FOREACH_SAFE(altq, V_pf_altq_ifs_inactive, entries, tmp) {
 666                 if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) {
 667                         /* detach and destroy the discipline */
 668                         error = altq_remove(altq);
 669                 }
 670                 free(altq, M_PFALTQ);
 671         }
 672         TAILQ_INIT(V_pf_altq_ifs_inactive);
 673         TAILQ_FOREACH_SAFE(altq, V_pf_altqs_inactive, entries, tmp) {
 674                 pf_qid_unref(altq->qid);
 675                 free(altq, M_PFALTQ);
 676         }
 677         TAILQ_INIT(V_pf_altqs_inactive);
 678         V_altqs_inactive_open = 0;
 679         return (error);
 680 }
 681
 682 static int
 683 pf_commit_altq(u_int32_t ticket)
 684 {
 685         struct pf_altqqueue     *old_altqs, *old_altq_ifs;
 686         struct pf_altq          *altq, *tmp;
 687         int                      err, error = 0;
 688
 689         PF_RULES_WASSERT();
 690
 691         if (!V_altqs_inactive_open || ticket != V_ticket_altqs_inactive)
 692                 return (EBUSY);
 693
 694         /* swap altqs, keep the old. */
 695         old_altqs = V_pf_altqs_active;
 696         old_altq_ifs = V_pf_altq_ifs_active;
 697         V_pf_altqs_active = V_pf_altqs_inactive;
 698         V_pf_altq_ifs_active = V_pf_altq_ifs_inactive;
 699         V_pf_altqs_inactive = old_altqs;
 700         V_pf_altq_ifs_inactive = old_altq_ifs;
 701         V_ticket_altqs_active = V_ticket_altqs_inactive;
 702
 703         /* Attach new disciplines */
 704         TAILQ_FOREACH(altq, V_pf_altq_ifs_active, entries) {
 705                 if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) {
 706                         /* attach the discipline */
 707                         error = altq_pfattach(altq);
 708                         if (error == 0 && V_pf_altq_running)
 709                                 error = pf_enable_altq(altq);
 710                         if (error != 0)
 711                                 return (error);
 712                 }
 713         }
 714
 715         /* Purge the old altq lists */
 716         TAILQ_FOREACH_SAFE(altq, V_pf_altq_ifs_inactive, entries, tmp) {
 717                 if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) {
 718                         /* detach and destroy the discipline */
 719                         if (V_pf_altq_running)
 720                                 error = pf_disable_altq(altq);
 721                         err = altq_pfdetach(altq);
 722                         if (err != 0 && error == 0)
 723                                 error = err;
 724                         err = altq_remove(altq);
 725                         if (err != 0 && error == 0)
 726                                 error = err;
 727                 }
 728                 free(altq, M_PFALTQ);
 729         }
 730         TAILQ_INIT(V_pf_altq_ifs_inactive);
 731         TAILQ_FOREACH_SAFE(altq, V_pf_altqs_inactive, entries, tmp) {
 732                 pf_qid_unref(altq->qid);
 733                 free(altq, M_PFALTQ);
 734         }
 735         TAILQ_INIT(V_pf_altqs_inactive);
 736
 737         V_altqs_inactive_open = 0;
 738         return (error);
 739 }
 740
 741 static int
 742 pf_enable_altq(struct pf_altq *altq)
 743 {
 744         struct ifnet            *ifp;
 745         struct tb_profile        tb;
 746         int                      error = 0;
 747
 748         if ((ifp = ifunit(altq->ifname)) == NULL)
 749                 return (EINVAL);
 750
 751         if (ifp->if_snd.altq_type != ALTQT_NONE)
 752                 error = altq_enable(&ifp->if_snd);
 753
 754         /* set tokenbucket regulator */
 755         if (error == 0 && ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) {
 756                 tb.rate = altq->ifbandwidth;
 757                 tb.depth = altq->tbrsize;
 758                 error = tbr_set(&ifp->if_snd, &tb);
 759         }
 760
 761         return (error);
 762 }
 763
 764 static int
 765 pf_disable_altq(struct pf_altq *altq)
 766 {
 767         struct ifnet            *ifp;
 768         struct tb_profile        tb;
 769         int                      error;
 770
 771         if ((ifp = ifunit(altq->ifname)) == NULL)
 772                 return (EINVAL);
 773
 774         /*
 775          * when the discipline is no longer referenced, it was overridden
 776          * by a new one.  if so, just return.
 777          */
 778         if (altq->altq_disc != ifp->if_snd.altq_disc)
 779                 return (0);
 780
 781         error = altq_disable(&ifp->if_snd);
 782
 783         if (error == 0) {
 784                 /* clear tokenbucket regulator */
 785                 tb.rate = 0;
 786                 error = tbr_set(&ifp->if_snd, &tb);
 787         }
 788
 789         return (error);
 790 }
 791
 792 static int
 793 pf_altq_ifnet_event_add(struct ifnet *ifp, int remove, u_int32_t ticket,
 794     struct pf_altq *altq)
 795 {
 796         struct ifnet    *ifp1;
 797         int              error = 0;
 798
 799         /* Deactivate the interface in question */
 800         altq->local_flags &= ~PFALTQ_FLAG_IF_REMOVED;
 801         if ((ifp1 = ifunit(altq->ifname)) == NULL ||
 802             (remove && ifp1 == ifp)) {
 803                 altq->local_flags |= PFALTQ_FLAG_IF_REMOVED;
 804         } else {
 805                 error = altq_add(ifp1, altq);
 806
 807                 if (ticket != V_ticket_altqs_inactive)
 808                         error = EBUSY;
 809
 810                 if (error)
 811                         free(altq, M_PFALTQ);
 812         }
 813
 814         return (error);
 815 }
 816
 817 void
 818 pf_altq_ifnet_event(struct ifnet *ifp, int remove)
 819 {
 820         struct pf_altq  *a1, *a2, *a3;
 821         u_int32_t        ticket;
 822         int              error = 0;
 823
 824         /*
 825          * No need to re-evaluate the configuration for events on interfaces
 826          * that do not support ALTQ, as it's not possible for such
 827          * interfaces to be part of the configuration.
 828          */
 829         if (!ALTQ_IS_READY(&ifp->if_snd))
 830                 return;
 831
 832         /* Interrupt userland queue modifications */
 833         if (V_altqs_inactive_open)
 834                 pf_rollback_altq(V_ticket_altqs_inactive);
 835
 836         /* Start new altq ruleset */
 837         if (pf_begin_altq(&ticket))
 838                 return;
 839
 840         /* Copy the current active set */
 841         TAILQ_FOREACH(a1, V_pf_altq_ifs_active, entries) {
 842                 a2 = malloc(sizeof(*a2), M_PFALTQ, M_NOWAIT);
 843                 if (a2 == NULL) {
 844                         error = ENOMEM;
 845                         break;
 846                 }
 847                 bcopy(a1, a2, sizeof(struct pf_altq));
 848
 849                 error = pf_altq_ifnet_event_add(ifp, remove, ticket, a2);
 850                 if (error)
 851                         break;
 852
 853                 TAILQ_INSERT_TAIL(V_pf_altq_ifs_inactive, a2, entries);
 854         }
 855         if (error)
 856                 goto out;
 857         TAILQ_FOREACH(a1, V_pf_altqs_active, entries) {
 858                 a2 = malloc(sizeof(*a2), M_PFALTQ, M_NOWAIT);
 859                 if (a2 == NULL) {
 860                         error = ENOMEM;
 861                         break;
 862                 }
 863                 bcopy(a1, a2, sizeof(struct pf_altq));
 864
 865                 if ((a2->qid = pf_qname2qid(a2->qname)) == 0) {
 866                         error = EBUSY;
 867                         free(a2, M_PFALTQ);
 868                         break;
 869                 }
 870                 a2->altq_disc = NULL;
 871                 TAILQ_FOREACH(a3, V_pf_altq_ifs_inactive, entries) {
 872                         if (strncmp(a3->ifname, a2->ifname,
 873                                 IFNAMSIZ) == 0) {
 874                                 a2->altq_disc = a3->altq_disc;
 875                                 break;
 876                         }
 877                 }
 878                 error = pf_altq_ifnet_event_add(ifp, remove, ticket, a2);
 879                 if (error)
 880                         break;
 881
 882                 TAILQ_INSERT_TAIL(V_pf_altqs_inactive, a2, entries);
 883         }
 884
 885 out:
 886         if (error != 0)
 887                 pf_rollback_altq(ticket);
 888         else
 889                 pf_commit_altq(ticket);
 890 }
 891 #endif /* ALTQ */
 892
 893 static int
 894 pf_begin_rules(u_int32_t *ticket, int rs_num, const char *anchor)
 895 {
 896         struct pf_ruleset       *rs;
 897         struct pf_rule          *rule;
 898
 899         PF_RULES_WASSERT();
 900
 901         if (rs_num < 0 || rs_num >= PF_RULESET_MAX)
 902                 return (EINVAL);
 903         rs = pf_find_or_create_ruleset(anchor);
 904         if (rs == NULL)
 905                 return (EINVAL);
 906         while ((rule = TAILQ_FIRST(rs->rules[rs_num].inactive.ptr)) != NULL) {
 907                 pf_unlink_rule(rs->rules[rs_num].inactive.ptr, rule);
 908                 rs->rules[rs_num].inactive.rcount--;
 909         }
 910         *ticket = ++rs->rules[rs_num].inactive.ticket;
 911         rs->rules[rs_num].inactive.open = 1;
 912         return (0);
 913 }
 914
 915 static int
 916 pf_rollback_rules(u_int32_t ticket, int rs_num, char *anchor)
 917 {
 918         struct pf_ruleset       *rs;
 919         struct pf_rule          *rule;
 920
 921         PF_RULES_WASSERT();
 922
 923         if (rs_num < 0 || rs_num >= PF_RULESET_MAX)
 924                 return (EINVAL);
 925         rs = pf_find_ruleset(anchor);
 926         if (rs == NULL || !rs->rules[rs_num].inactive.open ||
 927             rs->rules[rs_num].inactive.ticket != ticket)
 928                 return (0);
 929         while ((rule = TAILQ_FIRST(rs->rules[rs_num].inactive.ptr)) != NULL) {
 930                 pf_unlink_rule(rs->rules[rs_num].inactive.ptr, rule);
 931                 rs->rules[rs_num].inactive.rcount--;
 932         }
 933         rs->rules[rs_num].inactive.open = 0;
 934         return (0);
 935 }
 936
 937 #define PF_MD5_UPD(st, elm)                                             \
 938                 MD5Update(ctx, (u_int8_t *) &(st)->elm, sizeof((st)->elm))
 939
 940 #define PF_MD5_UPD_STR(st, elm)                                         \
 941                 MD5Update(ctx, (u_int8_t *) (st)->elm, strlen((st)->elm))
 942
 943 #define PF_MD5_UPD_HTONL(st, elm, stor) do {                            \
 944                 (stor) = htonl((st)->elm);                              \
 945                 MD5Update(ctx, (u_int8_t *) &(stor), sizeof(u_int32_t));\
 946 } while (0)
 947
 948 #define PF_MD5_UPD_HTONS(st, elm, stor) do {                            \
 949                 (stor) = htons((st)->elm);                              \
 950                 MD5Update(ctx, (u_int8_t *) &(stor), sizeof(u_int16_t));\
 951 } while (0)
 952
 953 static void
 954 pf_hash_rule_addr(MD5_CTX *ctx, struct pf_rule_addr *pfr)
 955 {
 956         PF_MD5_UPD(pfr, addr.type);
 957         switch (pfr->addr.type) {
 958                 case PF_ADDR_DYNIFTL:
 959                         PF_MD5_UPD(pfr, addr.v.ifname);
 960                         PF_MD5_UPD(pfr, addr.iflags);
 961                         break;
 962                 case PF_ADDR_TABLE:
 963                         PF_MD5_UPD(pfr, addr.v.tblname);
 964                         break;
 965                 case PF_ADDR_ADDRMASK:
 966                         /* XXX ignore af? */
 967                         PF_MD5_UPD(pfr, addr.v.a.addr.addr32);
 968                         PF_MD5_UPD(pfr, addr.v.a.mask.addr32);
 969                         break;
 970         }
 971
 972         PF_MD5_UPD(pfr, port[0]);
 973         PF_MD5_UPD(pfr, port[1]);
 974         PF_MD5_UPD(pfr, neg);
 975         PF_MD5_UPD(pfr, port_op);
 976 }
 977
 978 static void
 979 pf_hash_rule(MD5_CTX *ctx, struct pf_rule *rule)
 980 {
 981         u_int16_t x;
 982         u_int32_t y;
 983
 984         pf_hash_rule_addr(ctx, &rule->src);
 985         pf_hash_rule_addr(ctx, &rule->dst);
 986         PF_MD5_UPD_STR(rule, label);
 987         PF_MD5_UPD_STR(rule, ifname);
 988         PF_MD5_UPD_STR(rule, match_tagname);
 989         PF_MD5_UPD_HTONS(rule, match_tag, x); /* dup? */
 990         PF_MD5_UPD_HTONL(rule, os_fingerprint, y);
 991         PF_MD5_UPD_HTONL(rule, prob, y);
 992         PF_MD5_UPD_HTONL(rule, uid.uid[0], y);
 993         PF_MD5_UPD_HTONL(rule, uid.uid[1], y);
 994         PF_MD5_UPD(rule, uid.op);
 995         PF_MD5_UPD_HTONL(rule, gid.gid[0], y);
 996         PF_MD5_UPD_HTONL(rule, gid.gid[1], y);
 997         PF_MD5_UPD(rule, gid.op);
 998         PF_MD5_UPD_HTONL(rule, rule_flag, y);
 999         PF_MD5_UPD(rule, action);
1000         PF_MD5_UPD(rule, direction);
1001         PF_MD5_UPD(rule, af);
1002         PF_MD5_UPD(rule, quick);
1003         PF_MD5_UPD(rule, ifnot);
1004         PF_MD5_UPD(rule, match_tag_not);
1005         PF_MD5_UPD(rule, natpass);
1006         PF_MD5_UPD(rule, keep_state);
1007         PF_MD5_UPD(rule, proto);
1008         PF_MD5_UPD(rule, type);
1009         PF_MD5_UPD(rule, code);
1010         PF_MD5_UPD(rule, flags);
1011         PF_MD5_UPD(rule, flagset);
1012         PF_MD5_UPD(rule, allow_opts);
1013         PF_MD5_UPD(rule, rt);
1014         PF_MD5_UPD(rule, tos);
1015 }
1016
1017 static int
1018 pf_commit_rules(u_int32_t ticket, int rs_num, char *anchor)
1019 {
1020         struct pf_ruleset       *rs;
1021         struct pf_rule          *rule, **old_array;
1022         struct pf_rulequeue     *old_rules;
1023         int                      error;
1024         u_int32_t                old_rcount;
1025
1026         PF_RULES_WASSERT();
1027
1028         if (rs_num < 0 || rs_num >= PF_RULESET_MAX)
1029                 return (EINVAL);
1030         rs = pf_find_ruleset(anchor);
1031         if (rs == NULL || !rs->rules[rs_num].inactive.open ||
1032             ticket != rs->rules[rs_num].inactive.ticket)
1033                 return (EBUSY);
1034
1035         /* Calculate checksum for the main ruleset */
1036         if (rs == &pf_main_ruleset) {
1037                 error = pf_setup_pfsync_matching(rs);
1038                 if (error != 0)
1039                         return (error);
1040         }
1041
1042         /* Swap rules, keep the old. */
1043         old_rules = rs->rules[rs_num].active.ptr;
1044         old_rcount = rs->rules[rs_num].active.rcount;
1045         old_array = rs->rules[rs_num].active.ptr_array;
1046
1047         rs->rules[rs_num].active.ptr =
1048             rs->rules[rs_num].inactive.ptr;
1049         rs->rules[rs_num].active.ptr_array =
1050             rs->rules[rs_num].inactive.ptr_array;
1051         rs->rules[rs_num].active.rcount =
1052             rs->rules[rs_num].inactive.rcount;
1053         rs->rules[rs_num].inactive.ptr = old_rules;
1054         rs->rules[rs_num].inactive.ptr_array = old_array;
1055         rs->rules[rs_num].inactive.rcount = old_rcount;
1056
1057         rs->rules[rs_num].active.ticket =
1058             rs->rules[rs_num].inactive.ticket;
1059         pf_calc_skip_steps(rs->rules[rs_num].active.ptr);
1060
1061
1062         /* Purge the old rule list. */
1063         while ((rule = TAILQ_FIRST(old_rules)) != NULL)
1064                 pf_unlink_rule(old_rules, rule);
1065         if (rs->rules[rs_num].inactive.ptr_array)
1066                 free(rs->rules[rs_num].inactive.ptr_array, M_TEMP);
1067         rs->rules[rs_num].inactive.ptr_array = NULL;
1068         rs->rules[rs_num].inactive.rcount = 0;
1069         rs->rules[rs_num].inactive.open = 0;
1070         pf_remove_if_empty_ruleset(rs);
1071
1072         return (0);
1073 }
1074
1075 static int
1076 pf_setup_pfsync_matching(struct pf_ruleset *rs)
1077 {
1078         MD5_CTX                  ctx;
1079         struct pf_rule          *rule;
1080         int                      rs_cnt;
1081         u_int8_t                 digest[PF_MD5_DIGEST_LENGTH];
1082
1083         MD5Init(&ctx);
1084         for (rs_cnt = 0; rs_cnt < PF_RULESET_MAX; rs_cnt++) {
1085                 /* XXX PF_RULESET_SCRUB as well? */
1086                 if (rs_cnt == PF_RULESET_SCRUB)
1087                         continue;
1088
1089                 if (rs->rules[rs_cnt].inactive.ptr_array)
1090                         free(rs->rules[rs_cnt].inactive.ptr_array, M_TEMP);
1091                 rs->rules[rs_cnt].inactive.ptr_array = NULL;
1092
1093                 if (rs->rules[rs_cnt].inactive.rcount) {
1094                         rs->rules[rs_cnt].inactive.ptr_array =
1095                             malloc(sizeof(caddr_t) *
1096                             rs->rules[rs_cnt].inactive.rcount,
1097                             M_TEMP, M_NOWAIT);
1098
1099                         if (!rs->rules[rs_cnt].inactive.ptr_array)
1100                                 return (ENOMEM);
1101                 }
1102
1103                 TAILQ_FOREACH(rule, rs->rules[rs_cnt].inactive.ptr,
1104                     entries) {
1105                         pf_hash_rule(&ctx, rule);
1106                         (rs->rules[rs_cnt].inactive.ptr_array)[rule->nr] = rule;
1107                 }
1108         }
1109
1110         MD5Final(digest, &ctx);
1111         memcpy(V_pf_status.pf_chksum, digest, sizeof(V_pf_status.pf_chksum));
1112         return (0);
1113 }
1114
1115 static int
1116 pf_addr_setup(struct pf_ruleset *ruleset, struct pf_addr_wrap *addr,
1117     sa_family_t af)
1118 {
1119         int error = 0;
1120
1121         switch (addr->type) {
1122         case PF_ADDR_TABLE:
1123                 addr->p.tbl = pfr_attach_table(ruleset, addr->v.tblname);
1124                 if (addr->p.tbl == NULL)
1125                         error = ENOMEM;
1126                 break;
1127         case PF_ADDR_DYNIFTL:
1128                 error = pfi_dynaddr_setup(addr, af);
1129                 break;
1130         }
1131
1132         return (error);
1133 }
1134
1135 static void
1136 pf_addr_copyout(struct pf_addr_wrap *addr)
1137 {
1138
1139         switch (addr->type) {
1140         case PF_ADDR_DYNIFTL:
1141                 pfi_dynaddr_copyout(addr);
1142                 break;
1143         case PF_ADDR_TABLE:
1144                 pf_tbladdr_copyout(addr);
1145                 break;
1146         }
1147 }
1148
1149 #ifdef ALTQ
1150 /*
1151  * Handle export of struct pf_kaltq to user binaries that may be using any
1152  * version of struct pf_altq.
1153  */
1154 static int
1155 pf_export_kaltq(struct pf_altq *q, struct pfioc_altq_v1 *pa, size_t ioc_size)
1156 {
1157         u_int32_t version;
1158
1159         if (ioc_size == sizeof(struct pfioc_altq_v0))
1160                 version = 0;
1161         else
1162                 version = pa->version;
1163
1164         if (version > PFIOC_ALTQ_VERSION)
1165                 return (EINVAL);
1166
1167 #define ASSIGN(x) exported_q->x = q->x
1168 #define COPY(x) \
1169         bcopy(&q->x, &exported_q->x, min(sizeof(q->x), sizeof(exported_q->x)))
1170 #define SATU16(x) (u_int32_t)uqmin((x), USHRT_MAX)
1171 #define SATU32(x) (u_int32_t)uqmin((x), UINT_MAX)
1172
1173         switch (version) {
1174         case 0: {
1175                 struct pf_altq_v0 *exported_q =
1176                     &((struct pfioc_altq_v0 *)pa)->altq;
1177
1178                 COPY(ifname);
1179
1180                 ASSIGN(scheduler);
1181                 ASSIGN(tbrsize);
1182                 exported_q->tbrsize = SATU16(q->tbrsize);
1183                 exported_q->ifbandwidth = SATU32(q->ifbandwidth);
1184
1185                 COPY(qname);
1186                 COPY(parent);
1187                 ASSIGN(parent_qid);
1188                 exported_q->bandwidth = SATU32(q->bandwidth);
1189                 ASSIGN(priority);
1190                 ASSIGN(local_flags);
1191
1192                 ASSIGN(qlimit);
1193                 ASSIGN(flags);
1194
1195                 if (q->scheduler == ALTQT_HFSC) {
1196 #define ASSIGN_OPT(x) exported_q->pq_u.hfsc_opts.x = q->pq_u.hfsc_opts.x
1197 #define ASSIGN_OPT_SATU32(x) exported_q->pq_u.hfsc_opts.x = \
1198                             SATU32(q->pq_u.hfsc_opts.x)
1199
1200                         ASSIGN_OPT_SATU32(rtsc_m1);
1201                         ASSIGN_OPT(rtsc_d);
1202                         ASSIGN_OPT_SATU32(rtsc_m2);
1203
1204                         ASSIGN_OPT_SATU32(lssc_m1);
1205                         ASSIGN_OPT(lssc_d);
1206                         ASSIGN_OPT_SATU32(lssc_m2);
1207
1208                         ASSIGN_OPT_SATU32(ulsc_m1);
1209                         ASSIGN_OPT(ulsc_d);
1210                         ASSIGN_OPT_SATU32(ulsc_m2);
1211
1212                         ASSIGN_OPT(flags);
1213
1214 #undef ASSIGN_OPT
1215 #undef ASSIGN_OPT_SATU32
1216                 } else
1217                         COPY(pq_u);
1218
1219                 ASSIGN(qid);
1220                 break;
1221         }
1222         case 1: {
1223                 struct pf_altq_v1 *exported_q =
1224                     &((struct pfioc_altq_v1 *)pa)->altq;
1225
1226                 COPY(ifname);
1227
1228                 ASSIGN(scheduler);
1229                 ASSIGN(tbrsize);
1230                 ASSIGN(ifbandwidth);
1231
1232                 COPY(qname);
1233                 COPY(parent);
1234                 ASSIGN(parent_qid);
1235                 ASSIGN(bandwidth);
1236                 ASSIGN(priority);
1237                 ASSIGN(local_flags);
1238
1239                 ASSIGN(qlimit);
1240                 ASSIGN(flags);
1241                 COPY(pq_u);
1242
1243                 ASSIGN(qid);
1244                 break;
1245         }
1246         default:
1247                 panic("%s: unhandled struct pfioc_altq version", __func__);
1248                 break;
1249         }
1250
1251 #undef ASSIGN
1252 #undef COPY
1253 #undef SATU16
1254 #undef SATU32
1255
1256         return (0);
1257 }
1258
1259 /*
1260  * Handle import to struct pf_kaltq of struct pf_altq from user binaries
1261  * that may be using any version of it.
1262  */
1263 static int
1264 pf_import_kaltq(struct pfioc_altq_v1 *pa, struct pf_altq *q, size_t ioc_size)
1265 {
1266         u_int32_t version;
1267
1268         if (ioc_size == sizeof(struct pfioc_altq_v0))
1269                 version = 0;
1270         else
1271                 version = pa->version;
1272
1273         if (version > PFIOC_ALTQ_VERSION)
1274                 return (EINVAL);
1275
1276 #define ASSIGN(x) q->x = imported_q->x
1277 #define COPY(x) \
1278         bcopy(&imported_q->x, &q->x, min(sizeof(imported_q->x), sizeof(q->x)))
1279
1280         switch (version) {
1281         case 0: {
1282                 struct pf_altq_v0 *imported_q =
1283                     &((struct pfioc_altq_v0 *)pa)->altq;
1284
1285                 COPY(ifname);
1286
1287                 ASSIGN(scheduler);
1288                 ASSIGN(tbrsize); /* 16-bit -> 32-bit */
1289                 ASSIGN(ifbandwidth); /* 32-bit -> 64-bit */
1290
1291                 COPY(qname);
1292                 COPY(parent);
1293                 ASSIGN(parent_qid);
1294                 ASSIGN(bandwidth); /* 32-bit -> 64-bit */
1295                 ASSIGN(priority);
1296                 ASSIGN(local_flags);
1297
1298                 ASSIGN(qlimit);
1299                 ASSIGN(flags);
1300
1301                 if (imported_q->scheduler == ALTQT_HFSC) {
1302 #define ASSIGN_OPT(x) q->pq_u.hfsc_opts.x = imported_q->pq_u.hfsc_opts.x
1303
1304                         /*
1305                          * The m1 and m2 parameters are being copied from
1306                          * 32-bit to 64-bit.
1307                          */
1308                         ASSIGN_OPT(rtsc_m1);
1309                         ASSIGN_OPT(rtsc_d);
1310                         ASSIGN_OPT(rtsc_m2);
1311
1312                         ASSIGN_OPT(lssc_m1);
1313                         ASSIGN_OPT(lssc_d);
1314                         ASSIGN_OPT(lssc_m2);
1315
1316                         ASSIGN_OPT(ulsc_m1);
1317                         ASSIGN_OPT(ulsc_d);
1318                         ASSIGN_OPT(ulsc_m2);
1319
1320                         ASSIGN_OPT(flags);
1321
1322 #undef ASSIGN_OPT
1323                 } else
1324                         COPY(pq_u);
1325
1326                 ASSIGN(qid);
1327                 break;
1328         }
1329         case 1: {
1330                 struct pf_altq_v1 *imported_q =
1331                     &((struct pfioc_altq_v1 *)pa)->altq;
1332
1333                 COPY(ifname);
1334
1335                 ASSIGN(scheduler);
1336                 ASSIGN(tbrsize);
1337                 ASSIGN(ifbandwidth);
1338
1339                 COPY(qname);
1340                 COPY(parent);
1341                 ASSIGN(parent_qid);
1342                 ASSIGN(bandwidth);
1343                 ASSIGN(priority);
1344                 ASSIGN(local_flags);
1345
1346                 ASSIGN(qlimit);
1347                 ASSIGN(flags);
1348                 COPY(pq_u);
1349
1350                 ASSIGN(qid);
1351                 break;
1352         }
1353         default:
1354                 panic("%s: unhandled struct pfioc_altq version", __func__);
1355                 break;
1356         }
1357
1358 #undef ASSIGN
1359 #undef COPY
1360
1361         return (0);
1362 }
1363
1364 static struct pf_altq *
1365 pf_altq_get_nth_active(u_int32_t n)
1366 {
1367         struct pf_altq          *altq;
1368         u_int32_t                nr;
1369
1370         nr = 0;
1371         TAILQ_FOREACH(altq, V_pf_altq_ifs_active, entries) {
1372                 if (nr == n)
1373                         return (altq);
1374                 nr++;
1375         }
1376
1377         TAILQ_FOREACH(altq, V_pf_altqs_active, entries) {
1378                 if (nr == n)
1379                         return (altq);
1380                 nr++;
1381         }
1382
1383         return (NULL);
1384 }
1385 #endif /* ALTQ */
1386
1387 static int
1388 pfioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags, struct thread *td)
1389 {
1390         int                      error = 0;
1391         PF_RULES_RLOCK_TRACKER;
1392
1393         /* XXX keep in sync with switch() below */
1394         if (securelevel_gt(td->td_ucred, 2))
1395                 switch (cmd) {
1396                 case DIOCGETRULES:
1397                 case DIOCGETRULE:
1398                 case DIOCGETADDRS:
1399                 case DIOCGETADDR:
1400                 case DIOCGETSTATE:
1401                 case DIOCSETSTATUSIF:
1402                 case DIOCGETSTATUS:
1403                 case DIOCCLRSTATUS:
1404                 case DIOCNATLOOK:
1405                 case DIOCSETDEBUG:
1406                 case DIOCGETSTATES:
1407                 case DIOCGETTIMEOUT:
1408                 case DIOCCLRRULECTRS:
1409                 case DIOCGETLIMIT:
1410                 case DIOCGETALTQSV0:
1411                 case DIOCGETALTQSV1:
1412                 case DIOCGETALTQV0:
1413                 case DIOCGETALTQV1:
1414                 case DIOCGETQSTATSV0:
1415                 case DIOCGETQSTATSV1:
1416                 case DIOCGETRULESETS:
1417                 case DIOCGETRULESET:
1418                 case DIOCRGETTABLES:
1419                 case DIOCRGETTSTATS:
1420                 case DIOCRCLRTSTATS:
1421                 case DIOCRCLRADDRS:
1422                 case DIOCRADDADDRS:
1423                 case DIOCRDELADDRS:
1424                 case DIOCRSETADDRS:
1425                 case DIOCRGETADDRS:
1426                 case DIOCRGETASTATS:
1427                 case DIOCRCLRASTATS:
1428                 case DIOCRTSTADDRS:
1429                 case DIOCOSFPGET:
1430                 case DIOCGETSRCNODES:
1431                 case DIOCCLRSRCNODES:
1432                 case DIOCIGETIFACES:
1433                 case DIOCGIFSPEEDV0:
1434                 case DIOCGIFSPEEDV1:
1435                 case DIOCSETIFFLAG:
1436                 case DIOCCLRIFFLAG:
1437                         break;
1438                 case DIOCRCLRTABLES:
1439                 case DIOCRADDTABLES:
1440                 case DIOCRDELTABLES:
1441                 case DIOCRSETTFLAGS:
1442                         if (((struct pfioc_table *)addr)->pfrio_flags &
1443                             PFR_FLAG_DUMMY)
1444                                 break; /* dummy operation ok */
1445                         return (EPERM);
1446                 default:
1447                         return (EPERM);
1448                 }
1449
1450         if (!(flags & FWRITE))
1451                 switch (cmd) {
1452                 case DIOCGETRULES:
1453                 case DIOCGETADDRS:
1454                 case DIOCGETADDR:
1455                 case DIOCGETSTATE:
1456                 case DIOCGETSTATUS:
1457                 case DIOCGETSTATES:
1458                 case DIOCGETTIMEOUT:
1459                 case DIOCGETLIMIT:
1460                 case DIOCGETALTQSV0:
1461                 case DIOCGETALTQSV1:
1462                 case DIOCGETALTQV0:
1463                 case DIOCGETALTQV1:
1464                 case DIOCGETQSTATSV0:
1465                 case DIOCGETQSTATSV1:
1466                 case DIOCGETRULESETS:
1467                 case DIOCGETRULESET:
1468                 case DIOCNATLOOK:
1469                 case DIOCRGETTABLES:
1470                 case DIOCRGETTSTATS:
1471                 case DIOCRGETADDRS:
1472                 case DIOCRGETASTATS:
1473                 case DIOCRTSTADDRS:
1474                 case DIOCOSFPGET:
1475                 case DIOCGETSRCNODES:
1476                 case DIOCIGETIFACES:
1477                 case DIOCGIFSPEEDV1:
1478                 case DIOCGIFSPEEDV0:
1479                         break;
1480                 case DIOCRCLRTABLES:
1481                 case DIOCRADDTABLES:
1482                 case DIOCRDELTABLES:
1483                 case DIOCRCLRTSTATS:
1484                 case DIOCRCLRADDRS:
1485                 case DIOCRADDADDRS:
1486                 case DIOCRDELADDRS:
1487                 case DIOCRSETADDRS:
1488                 case DIOCRSETTFLAGS:
1489                         if (((struct pfioc_table *)addr)->pfrio_flags &
1490                             PFR_FLAG_DUMMY) {
1491                                 flags |= FWRITE; /* need write lock for dummy */
1492                                 break; /* dummy operation ok */
1493                         }
1494                         return (EACCES);
1495                 case DIOCGETRULE:
1496                         if (((struct pfioc_rule *)addr)->action ==
1497                             PF_GET_CLR_CNTR)
1498                                 return (EACCES);
1499                         break;
1500                 default:
1501                         return (EACCES);
1502                 }
1503
1504         CURVNET_SET(TD_TO_VNET(td));
1505
1506         switch (cmd) {
1507         case DIOCSTART:
1508                 sx_xlock(&pf_ioctl_lock);
1509                 if (V_pf_status.running)
1510                         error = EEXIST;
1511                 else {
1512                         int cpu;
1513
1514                         error = hook_pf();
1515                         if (error) {
1516                                 DPFPRINTF(PF_DEBUG_MISC,
1517                                     ("pf: pfil registration failed\n"));
1518                                 break;
1519                         }
1520                         V_pf_status.running = 1;
1521                         V_pf_status.since = time_second;
1522
1523                         CPU_FOREACH(cpu)
1524                                 V_pf_stateid[cpu] = time_second;
1525
1526                         DPFPRINTF(PF_DEBUG_MISC, ("pf: started\n"));
1527                 }
1528                 break;
1529
1530         case DIOCSTOP:
1531                 sx_xlock(&pf_ioctl_lock);
1532                 if (!V_pf_status.running)
1533                         error = ENOENT;
1534                 else {
1535                         V_pf_status.running = 0;
1536                         error = dehook_pf();
1537                         if (error) {
1538                                 V_pf_status.running = 1;
1539                                 DPFPRINTF(PF_DEBUG_MISC,
1540                                     ("pf: pfil unregistration failed\n"));
1541                         }
1542                         V_pf_status.since = time_second;
1543                         DPFPRINTF(PF_DEBUG_MISC, ("pf: stopped\n"));
1544                 }
1545                 break;
1546
1547         case DIOCADDRULE: {
1548                 struct pfioc_rule       *pr = (struct pfioc_rule *)addr;
1549                 struct pf_ruleset       *ruleset;
1550                 struct pf_rule          *rule, *tail;
1551                 struct pf_pooladdr      *pa;
1552                 struct pfi_kif          *kif = NULL;
1553                 int                      rs_num;
1554
1555                 if (pr->rule.return_icmp >> 8 > ICMP_MAXTYPE) {
1556                         error = EINVAL;
1557                         break;
1558                 }
1559 #ifndef INET
1560                 if (pr->rule.af == AF_INET) {
1561                         error = EAFNOSUPPORT;
1562                         break;
1563                 }
1564 #endif /* INET */
1565 #ifndef INET6
1566                 if (pr->rule.af == AF_INET6) {
1567                         error = EAFNOSUPPORT;
1568                         break;
1569                 }
1570 #endif /* INET6 */
1571
1572                 rule = malloc(sizeof(*rule), M_PFRULE, M_WAITOK);
1573                 bcopy(&pr->rule, rule, sizeof(struct pf_rule));
1574                 if (rule->ifname[0])
1575                         kif = malloc(sizeof(*kif), PFI_MTYPE, M_WAITOK);
1576                 rule->states_cur = counter_u64_alloc(M_WAITOK);
1577                 rule->states_tot = counter_u64_alloc(M_WAITOK);
1578                 rule->src_nodes = counter_u64_alloc(M_WAITOK);
1579                 rule->cuid = td->td_ucred->cr_ruid;
1580                 rule->cpid = td->td_proc ? td->td_proc->p_pid : 0;
1581                 TAILQ_INIT(&rule->rpool.list);
1582
1583 #define ERROUT(x)       { error = (x); goto DIOCADDRULE_error; }
1584
1585                 PF_RULES_WLOCK();
1586                 pr->anchor[sizeof(pr->anchor) - 1] = 0;
1587                 ruleset = pf_find_ruleset(pr->anchor);
1588                 if (ruleset == NULL)
1589                         ERROUT(EINVAL);
1590                 rs_num = pf_get_ruleset_number(pr->rule.action);
1591                 if (rs_num >= PF_RULESET_MAX)
1592                         ERROUT(EINVAL);
1593                 if (pr->ticket != ruleset->rules[rs_num].inactive.ticket) {
1594                         DPFPRINTF(PF_DEBUG_MISC,
1595                             ("ticket: %d != [%d]%d\n", pr->ticket, rs_num,
1596                             ruleset->rules[rs_num].inactive.ticket));
1597                         ERROUT(EBUSY);
1598                 }
1599                 if (pr->pool_ticket != V_ticket_pabuf) {
1600                         DPFPRINTF(PF_DEBUG_MISC,
1601                             ("pool_ticket: %d != %d\n", pr->pool_ticket,
1602                             V_ticket_pabuf));
1603                         ERROUT(EBUSY);
1604                 }
1605
1606                 tail = TAILQ_LAST(ruleset->rules[rs_num].inactive.ptr,
1607                     pf_rulequeue);
1608                 if (tail)
1609                         rule->nr = tail->nr + 1;
1610                 else
1611                         rule->nr = 0;
1612                 if (rule->ifname[0]) {
1613                         rule->kif = pfi_kif_attach(kif, rule->ifname);
1614                         pfi_kif_ref(rule->kif);
1615                 } else
1616                         rule->kif = NULL;
1617
1618                 if (rule->rtableid > 0 && rule->rtableid >= rt_numfibs)
1619                         error = EBUSY;
1620
1621 #ifdef ALTQ
1622                 /* set queue IDs */
1623                 if (rule->qname[0] != 0) {
1624                         if ((rule->qid = pf_qname2qid(rule->qname)) == 0)
1625                                 error = EBUSY;
1626                         else if (rule->pqname[0] != 0) {
1627                                 if ((rule->pqid =
1628                                     pf_qname2qid(rule->pqname)) == 0)
1629                                         error = EBUSY;
1630                         } else
1631                                 rule->pqid = rule->qid;
1632                 }
1633 #endif
1634                 if (rule->tagname[0])
1635                         if ((rule->tag = pf_tagname2tag(rule->tagname)) == 0)
1636                                 error = EBUSY;
1637                 if (rule->match_tagname[0])
1638                         if ((rule->match_tag =
1639                             pf_tagname2tag(rule->match_tagname)) == 0)
1640                                 error = EBUSY;
1641                 if (rule->rt && !rule->direction)
1642                         error = EINVAL;
1643                 if (!rule->log)
1644                         rule->logif = 0;
1645                 if (rule->logif >= PFLOGIFS_MAX)
1646                         error = EINVAL;
1647                 if (pf_addr_setup(ruleset, &rule->src.addr, rule->af))
1648                         error = ENOMEM;
1649                 if (pf_addr_setup(ruleset, &rule->dst.addr, rule->af))
1650                         error = ENOMEM;
1651                 if (pf_anchor_setup(rule, ruleset, pr->anchor_call))
1652                         error = EINVAL;
1653                 if (rule->scrub_flags & PFSTATE_SETPRIO &&
1654                     (rule->set_prio[0] > PF_PRIO_MAX ||
1655                     rule->set_prio[1] > PF_PRIO_MAX))
1656                         error = EINVAL;
1657                 TAILQ_FOREACH(pa, &V_pf_pabuf, entries)
1658                         if (pa->addr.type == PF_ADDR_TABLE) {
1659                                 pa->addr.p.tbl = pfr_attach_table(ruleset,
1660                                     pa->addr.v.tblname);
1661                                 if (pa->addr.p.tbl == NULL)
1662                                         error = ENOMEM;
1663                         }
1664
1665                 rule->overload_tbl = NULL;
1666                 if (rule->overload_tblname[0]) {
1667                         if ((rule->overload_tbl = pfr_attach_table(ruleset,
1668                             rule->overload_tblname)) == NULL)
1669                                 error = EINVAL;
1670                         else
1671                                 rule->overload_tbl->pfrkt_flags |=
1672                                     PFR_TFLAG_ACTIVE;
1673                 }
1674
1675                 pf_mv_pool(&V_pf_pabuf, &rule->rpool.list);
1676                 if (((((rule->action == PF_NAT) || (rule->action == PF_RDR) ||
1677                     (rule->action == PF_BINAT)) && rule->anchor == NULL) ||
1678                     (rule->rt > PF_NOPFROUTE)) &&
1679                     (TAILQ_FIRST(&rule->rpool.list) == NULL))
1680                         error = EINVAL;
1681
1682                 if (error) {
1683                         pf_free_rule(rule);
1684                         PF_RULES_WUNLOCK();
1685                         break;
1686                 }
1687
1688                 rule->rpool.cur = TAILQ_FIRST(&rule->rpool.list);
1689                 rule->evaluations = rule->packets[0] = rule->packets[1] =
1690                     rule->bytes[0] = rule->bytes[1] = 0;
1691                 TAILQ_INSERT_TAIL(ruleset->rules[rs_num].inactive.ptr,
1692                     rule, entries);
1693                 ruleset->rules[rs_num].inactive.rcount++;
1694                 PF_RULES_WUNLOCK();
1695                 break;
1696
1697 #undef ERROUT
1698 DIOCADDRULE_error:
1699                 PF_RULES_WUNLOCK();
1700                 counter_u64_free(rule->states_cur);
1701                 counter_u64_free(rule->states_tot);
1702                 counter_u64_free(rule->src_nodes);
1703                 free(rule, M_PFRULE);
1704                 if (kif)
1705                         free(kif, PFI_MTYPE);
1706                 break;
1707         }
1708
1709         case DIOCGETRULES: {
1710                 struct pfioc_rule       *pr = (struct pfioc_rule *)addr;
1711                 struct pf_ruleset       *ruleset;
1712                 struct pf_rule          *tail;
1713                 int                      rs_num;
1714
1715                 PF_RULES_WLOCK();
1716                 pr->anchor[sizeof(pr->anchor) - 1] = 0;
1717                 ruleset = pf_find_ruleset(pr->anchor);
1718                 if (ruleset == NULL) {
1719                         PF_RULES_WUNLOCK();
1720                         error = EINVAL;
1721                         break;
1722                 }
1723                 rs_num = pf_get_ruleset_number(pr->rule.action);
1724                 if (rs_num >= PF_RULESET_MAX) {
1725                         PF_RULES_WUNLOCK();
1726                         error = EINVAL;
1727                         break;
1728                 }
1729                 tail = TAILQ_LAST(ruleset->rules[rs_num].active.ptr,
1730                     pf_rulequeue);
1731                 if (tail)
1732                         pr->nr = tail->nr + 1;
1733                 else
1734                         pr->nr = 0;
1735                 pr->ticket = ruleset->rules[rs_num].active.ticket;
1736                 PF_RULES_WUNLOCK();
1737                 break;
1738         }
1739
1740         case DIOCGETRULE: {
1741                 struct pfioc_rule       *pr = (struct pfioc_rule *)addr;
1742                 struct pf_ruleset       *ruleset;
1743                 struct pf_rule          *rule;
1744                 int                      rs_num, i;
1745
1746                 PF_RULES_WLOCK();
1747                 pr->anchor[sizeof(pr->anchor) - 1] = 0;
1748                 ruleset = pf_find_ruleset(pr->anchor);
1749                 if (ruleset == NULL) {
1750                         PF_RULES_WUNLOCK();
1751                         error = EINVAL;
1752                         break;
1753                 }
1754                 rs_num = pf_get_ruleset_number(pr->rule.action);
1755                 if (rs_num >= PF_RULESET_MAX) {
1756                         PF_RULES_WUNLOCK();
1757                         error = EINVAL;
1758                         break;
1759                 }
1760                 if (pr->ticket != ruleset->rules[rs_num].active.ticket) {
1761                         PF_RULES_WUNLOCK();
1762                         error = EBUSY;
1763                         break;
1764                 }
1765                 rule = TAILQ_FIRST(ruleset->rules[rs_num].active.ptr);
1766                 while ((rule != NULL) && (rule->nr != pr->nr))
1767                         rule = TAILQ_NEXT(rule, entries);
1768                 if (rule == NULL) {
1769                         PF_RULES_WUNLOCK();
1770                         error = EBUSY;
1771                         break;
1772                 }
1773                 bcopy(rule, &pr->rule, sizeof(struct pf_rule));
1774                 pr->rule.u_states_cur = counter_u64_fetch(rule->states_cur);
1775                 pr->rule.u_states_tot = counter_u64_fetch(rule->states_tot);
1776                 pr->rule.u_src_nodes = counter_u64_fetch(rule->src_nodes);
1777                 if (pf_anchor_copyout(ruleset, rule, pr)) {
1778                         PF_RULES_WUNLOCK();
1779                         error = EBUSY;
1780                         break;
1781                 }
1782                 pf_addr_copyout(&pr->rule.src.addr);
1783                 pf_addr_copyout(&pr->rule.dst.addr);
1784                 for (i = 0; i < PF_SKIP_COUNT; ++i)
1785                         if (rule->skip[i].ptr == NULL)
1786                                 pr->rule.skip[i].nr = -1;
1787                         else
1788                                 pr->rule.skip[i].nr =
1789                                     rule->skip[i].ptr->nr;
1790
1791                 if (pr->action == PF_GET_CLR_CNTR) {
1792                         rule->evaluations = 0;
1793                         rule->packets[0] = rule->packets[1] = 0;
1794                         rule->bytes[0] = rule->bytes[1] = 0;
1795                         counter_u64_zero(rule->states_tot);
1796                 }
1797                 PF_RULES_WUNLOCK();
1798                 break;
1799         }
1800
1801         case DIOCCHANGERULE: {
1802                 struct pfioc_rule       *pcr = (struct pfioc_rule *)addr;
1803                 struct pf_ruleset       *ruleset;
1804                 struct pf_rule          *oldrule = NULL, *newrule = NULL;
1805                 struct pfi_kif          *kif = NULL;
1806                 struct pf_pooladdr      *pa;
1807                 u_int32_t                nr = 0;
1808                 int                      rs_num;
1809
1810                 if (pcr->action < PF_CHANGE_ADD_HEAD ||
1811                     pcr->action > PF_CHANGE_GET_TICKET) {
1812                         error = EINVAL;
1813                         break;
1814                 }
1815                 if (pcr->rule.return_icmp >> 8 > ICMP_MAXTYPE) {
1816                         error = EINVAL;
1817                         break;
1818                 }
1819
1820                 if (pcr->action != PF_CHANGE_REMOVE) {
1821 #ifndef INET
1822                         if (pcr->rule.af == AF_INET) {
1823                                 error = EAFNOSUPPORT;
1824                                 break;
1825                         }
1826 #endif /* INET */
1827 #ifndef INET6
1828                         if (pcr->rule.af == AF_INET6) {
1829                                 error = EAFNOSUPPORT;
1830                                 break;
1831                         }
1832 #endif /* INET6 */
1833                         newrule = malloc(sizeof(*newrule), M_PFRULE, M_WAITOK);
1834                         bcopy(&pcr->rule, newrule, sizeof(struct pf_rule));
1835                         if (newrule->ifname[0])
1836                                 kif = malloc(sizeof(*kif), PFI_MTYPE, M_WAITOK);
1837                         newrule->states_cur = counter_u64_alloc(M_WAITOK);
1838                         newrule->states_tot = counter_u64_alloc(M_WAITOK);
1839                         newrule->src_nodes = counter_u64_alloc(M_WAITOK);
1840                         newrule->cuid = td->td_ucred->cr_ruid;
1841                         newrule->cpid = td->td_proc ? td->td_proc->p_pid : 0;
1842                         TAILQ_INIT(&newrule->rpool.list);
1843                 }
1844
1845 #define ERROUT(x)       { error = (x); goto DIOCCHANGERULE_error; }
1846
1847                 PF_RULES_WLOCK();
1848                 if (!(pcr->action == PF_CHANGE_REMOVE ||
1849                     pcr->action == PF_CHANGE_GET_TICKET) &&
1850                     pcr->pool_ticket != V_ticket_pabuf)
1851                         ERROUT(EBUSY);
1852
1853                 ruleset = pf_find_ruleset(pcr->anchor);
1854                 if (ruleset == NULL)
1855                         ERROUT(EINVAL);
1856
1857                 rs_num = pf_get_ruleset_number(pcr->rule.action);
1858                 if (rs_num >= PF_RULESET_MAX)
1859                         ERROUT(EINVAL);
1860
1861                 if (pcr->action == PF_CHANGE_GET_TICKET) {
1862                         pcr->ticket = ++ruleset->rules[rs_num].active.ticket;
1863                         ERROUT(0);
1864                 } else if (pcr->ticket !=
1865                             ruleset->rules[rs_num].active.ticket)
1866                                 ERROUT(EINVAL);
1867
1868                 if (pcr->action != PF_CHANGE_REMOVE) {
1869                         if (newrule->ifname[0]) {
1870                                 newrule->kif = pfi_kif_attach(kif,
1871                                     newrule->ifname);
1872                                 pfi_kif_ref(newrule->kif);
1873                         } else
1874                                 newrule->kif = NULL;
1875
1876                         if (newrule->rtableid > 0 &&
1877                             newrule->rtableid >= rt_numfibs)
1878                                 error = EBUSY;
1879
1880 #ifdef ALTQ
1881                         /* set queue IDs */
1882                         if (newrule->qname[0] != 0) {
1883                                 if ((newrule->qid =
1884                                     pf_qname2qid(newrule->qname)) == 0)
1885                                         error = EBUSY;
1886                                 else if (newrule->pqname[0] != 0) {
1887                                         if ((newrule->pqid =
1888                                             pf_qname2qid(newrule->pqname)) == 0)
1889                                                 error = EBUSY;
1890                                 } else
1891                                         newrule->pqid = newrule->qid;
1892                         }
1893 #endif /* ALTQ */
1894                         if (newrule->tagname[0])
1895                                 if ((newrule->tag =
1896                                     pf_tagname2tag(newrule->tagname)) == 0)
1897                                         error = EBUSY;
1898                         if (newrule->match_tagname[0])
1899                                 if ((newrule->match_tag = pf_tagname2tag(
1900                                     newrule->match_tagname)) == 0)
1901                                         error = EBUSY;
1902                         if (newrule->rt && !newrule->direction)
1903                                 error = EINVAL;
1904                         if (!newrule->log)
1905                                 newrule->logif = 0;
1906                         if (newrule->logif >= PFLOGIFS_MAX)
1907                                 error = EINVAL;
1908                         if (pf_addr_setup(ruleset, &newrule->src.addr, newrule->af))
1909                                 error = ENOMEM;
1910                         if (pf_addr_setup(ruleset, &newrule->dst.addr, newrule->af))
1911                                 error = ENOMEM;
1912                         if (pf_anchor_setup(newrule, ruleset, pcr->anchor_call))
1913                                 error = EINVAL;
1914                         TAILQ_FOREACH(pa, &V_pf_pabuf, entries)
1915                                 if (pa->addr.type == PF_ADDR_TABLE) {
1916                                         pa->addr.p.tbl =
1917                                             pfr_attach_table(ruleset,
1918                                             pa->addr.v.tblname);
1919                                         if (pa->addr.p.tbl == NULL)
1920                                                 error = ENOMEM;
1921                                 }
1922
1923                         newrule->overload_tbl = NULL;
1924                         if (newrule->overload_tblname[0]) {
1925                                 if ((newrule->overload_tbl = pfr_attach_table(
1926                                     ruleset, newrule->overload_tblname)) ==
1927                                     NULL)
1928                                         error = EINVAL;
1929                                 else
1930                                         newrule->overload_tbl->pfrkt_flags |=
1931                                             PFR_TFLAG_ACTIVE;
1932                         }
1933
1934                         pf_mv_pool(&V_pf_pabuf, &newrule->rpool.list);
1935                         if (((((newrule->action == PF_NAT) ||
1936                             (newrule->action == PF_RDR) ||
1937                             (newrule->action == PF_BINAT) ||
1938                             (newrule->rt > PF_NOPFROUTE)) &&
1939                             !newrule->anchor)) &&
1940                             (TAILQ_FIRST(&newrule->rpool.list) == NULL))
1941                                 error = EINVAL;
1942
1943                         if (error) {
1944                                 pf_free_rule(newrule);
1945                                 PF_RULES_WUNLOCK();
1946                                 break;
1947                         }
1948
1949                         newrule->rpool.cur = TAILQ_FIRST(&newrule->rpool.list);
1950                         newrule->evaluations = 0;
1951                         newrule->packets[0] = newrule->packets[1] = 0;
1952                         newrule->bytes[0] = newrule->bytes[1] = 0;
1953                 }
1954                 pf_empty_pool(&V_pf_pabuf);
1955
1956                 if (pcr->action == PF_CHANGE_ADD_HEAD)
1957                         oldrule = TAILQ_FIRST(
1958                             ruleset->rules[rs_num].active.ptr);
1959                 else if (pcr->action == PF_CHANGE_ADD_TAIL)
1960                         oldrule = TAILQ_LAST(
1961                             ruleset->rules[rs_num].active.ptr, pf_rulequeue);
1962                 else {
1963                         oldrule = TAILQ_FIRST(
1964                             ruleset->rules[rs_num].active.ptr);
1965                         while ((oldrule != NULL) && (oldrule->nr != pcr->nr))
1966                                 oldrule = TAILQ_NEXT(oldrule, entries);
1967                         if (oldrule == NULL) {
1968                                 if (newrule != NULL)
1969                                         pf_free_rule(newrule);
1970                                 PF_RULES_WUNLOCK();
1971                                 error = EINVAL;
1972                                 break;
1973                         }
1974                 }
1975
1976                 if (pcr->action == PF_CHANGE_REMOVE) {
1977                         pf_unlink_rule(ruleset->rules[rs_num].active.ptr,
1978                             oldrule);
1979                         ruleset->rules[rs_num].active.rcount--;
1980                 } else {
1981                         if (oldrule == NULL)
1982                                 TAILQ_INSERT_TAIL(
1983                                     ruleset->rules[rs_num].active.ptr,
1984                                     newrule, entries);
1985                         else if (pcr->action == PF_CHANGE_ADD_HEAD ||
1986                             pcr->action == PF_CHANGE_ADD_BEFORE)
1987                                 TAILQ_INSERT_BEFORE(oldrule, newrule, entries);
1988                         else
1989                                 TAILQ_INSERT_AFTER(
1990                                     ruleset->rules[rs_num].active.ptr,
1991                                     oldrule, newrule, entries);
1992                         ruleset->rules[rs_num].active.rcount++;
1993                 }
1994
1995                 nr = 0;
1996                 TAILQ_FOREACH(oldrule,
1997                     ruleset->rules[rs_num].active.ptr, entries)
1998                         oldrule->nr = nr++;
1999
2000                 ruleset->rules[rs_num].active.ticket++;
2001
2002                 pf_calc_skip_steps(ruleset->rules[rs_num].active.ptr);
2003                 pf_remove_if_empty_ruleset(ruleset);
2004
2005                 PF_RULES_WUNLOCK();
2006                 break;
2007
2008 #undef ERROUT
2009 DIOCCHANGERULE_error:
2010                 PF_RULES_WUNLOCK();
2011                 if (newrule != NULL) {
2012                         counter_u64_free(newrule->states_cur);
2013                         counter_u64_free(newrule->states_tot);
2014                         counter_u64_free(newrule->src_nodes);
2015                         free(newrule, M_PFRULE);
2016                 }
2017                 if (kif != NULL)
2018                         free(kif, PFI_MTYPE);
2019                 break;
2020         }
2021
2022         case DIOCCLRSTATES: {
2023                 struct pf_state         *s;
2024                 struct pfioc_state_kill *psk = (struct pfioc_state_kill *)addr;
2025                 u_int                    i, killed = 0;
2026
2027                 for (i = 0; i <= pf_hashmask; i++) {
2028                         struct pf_idhash *ih = &V_pf_idhash[i];
2029
2030 relock_DIOCCLRSTATES:
2031                         PF_HASHROW_LOCK(ih);
2032                         LIST_FOREACH(s, &ih->states, entry)
2033                                 if (!psk->psk_ifname[0] ||
2034                                     !strcmp(psk->psk_ifname,
2035                                     s->kif->pfik_name)) {
2036                                         /*
2037                                          * Don't send out individual
2038                                          * delete messages.
2039                                          */
2040                                         s->state_flags |= PFSTATE_NOSYNC;
2041                                         pf_unlink_state(s, PF_ENTER_LOCKED);
2042                                         killed++;
2043                                         goto relock_DIOCCLRSTATES;
2044                                 }
2045                         PF_HASHROW_UNLOCK(ih);
2046                 }
2047                 psk->psk_killed = killed;
2048                 if (V_pfsync_clear_states_ptr != NULL)
2049                         V_pfsync_clear_states_ptr(V_pf_status.hostid, psk->psk_ifname);
2050                 break;
2051         }
2052
2053         case DIOCKILLSTATES: {
2054                 struct pf_state         *s;
2055                 struct pf_state_key     *sk;
2056                 struct pf_addr          *srcaddr, *dstaddr;
2057                 u_int16_t                srcport, dstport;
2058                 struct pfioc_state_kill *psk = (struct pfioc_state_kill *)addr;
2059                 u_int                    i, killed = 0;
2060
2061                 if (psk->psk_pfcmp.id) {
2062                         if (psk->psk_pfcmp.creatorid == 0)
2063                                 psk->psk_pfcmp.creatorid = V_pf_status.hostid;
2064                         if ((s = pf_find_state_byid(psk->psk_pfcmp.id,
2065                             psk->psk_pfcmp.creatorid))) {
2066                                 pf_unlink_state(s, PF_ENTER_LOCKED);
2067                                 psk->psk_killed = 1;
2068                         }
2069                         break;
2070                 }
2071
2072                 for (i = 0; i <= pf_hashmask; i++) {
2073                         struct pf_idhash *ih = &V_pf_idhash[i];
2074
2075 relock_DIOCKILLSTATES:
2076                         PF_HASHROW_LOCK(ih);
2077                         LIST_FOREACH(s, &ih->states, entry) {
2078                                 sk = s->key[PF_SK_WIRE];
2079                                 if (s->direction == PF_OUT) {
2080                                         srcaddr = &sk->addr[1];
2081                                         dstaddr = &sk->addr[0];
2082                                         srcport = sk->port[1];
2083                                         dstport = sk->port[0];
2084                                 } else {
2085                                         srcaddr = &sk->addr[0];
2086                                         dstaddr = &sk->addr[1];
2087                                         srcport = sk->port[0];
2088                                         dstport = sk->port[1];
2089                                 }
2090
2091                                 if ((!psk->psk_af || sk->af == psk->psk_af)
2092                                     && (!psk->psk_proto || psk->psk_proto ==
2093                                     sk->proto) &&
2094                                     PF_MATCHA(psk->psk_src.neg,
2095                                     &psk->psk_src.addr.v.a.addr,
2096                                     &psk->psk_src.addr.v.a.mask,
2097                                     srcaddr, sk->af) &&
2098                                     PF_MATCHA(psk->psk_dst.neg,
2099                                     &psk->psk_dst.addr.v.a.addr,
2100                                     &psk->psk_dst.addr.v.a.mask,
2101                                     dstaddr, sk->af) &&
2102                                     (psk->psk_src.port_op == 0 ||
2103                                     pf_match_port(psk->psk_src.port_op,
2104                                     psk->psk_src.port[0], psk->psk_src.port[1],
2105                                     srcport)) &&
2106                                     (psk->psk_dst.port_op == 0 ||
2107                                     pf_match_port(psk->psk_dst.port_op,
2108                                     psk->psk_dst.port[0], psk->psk_dst.port[1],
2109                                     dstport)) &&
2110                                     (!psk->psk_label[0] ||
2111                                     (s->rule.ptr->label[0] &&
2112                                     !strcmp(psk->psk_label,
2113                                     s->rule.ptr->label))) &&
2114                                     (!psk->psk_ifname[0] ||
2115                                     !strcmp(psk->psk_ifname,
2116                                     s->kif->pfik_name))) {
2117                                         pf_unlink_state(s, PF_ENTER_LOCKED);
2118                                         killed++;
2119                                         goto relock_DIOCKILLSTATES;
2120                                 }
2121                         }
2122                         PF_HASHROW_UNLOCK(ih);
2123                 }
2124                 psk->psk_killed = killed;
2125                 break;
2126         }
2127
2128         case DIOCADDSTATE: {
2129                 struct pfioc_state      *ps = (struct pfioc_state *)addr;
2130                 struct pfsync_state     *sp = &ps->state;
2131
2132                 if (sp->timeout >= PFTM_MAX) {
2133                         error = EINVAL;
2134                         break;
2135                 }
2136                 if (V_pfsync_state_import_ptr != NULL) {
2137                         PF_RULES_RLOCK();
2138                         error = V_pfsync_state_import_ptr(sp, PFSYNC_SI_IOCTL);
2139                         PF_RULES_RUNLOCK();
2140                 } else
2141                         error = EOPNOTSUPP;
2142                 break;
2143         }
2144
2145         case DIOCGETSTATE: {
2146                 struct pfioc_state      *ps = (struct pfioc_state *)addr;
2147                 struct pf_state         *s;
2148
2149                 s = pf_find_state_byid(ps->state.id, ps->state.creatorid);
2150                 if (s == NULL) {
2151                         error = ENOENT;
2152                         break;
2153                 }
2154
2155                 pfsync_state_export(&ps->state, s);
2156                 PF_STATE_UNLOCK(s);
2157                 break;
2158         }
2159
2160         case DIOCGETSTATES: {
2161                 struct pfioc_states     *ps = (struct pfioc_states *)addr;
2162                 struct pf_state         *s;
2163                 struct pfsync_state     *pstore, *p;
2164                 int i, nr;
2165
2166                 if (ps->ps_len == 0) {
2167                         nr = uma_zone_get_cur(V_pf_state_z);
2168                         ps->ps_len = sizeof(struct pfsync_state) * nr;
2169                         break;
2170                 }
2171
2172                 p = pstore = malloc(ps->ps_len, M_TEMP, M_WAITOK);
2173                 nr = 0;
2174
2175                 for (i = 0; i <= pf_hashmask; i++) {
2176                         struct pf_idhash *ih = &V_pf_idhash[i];
2177
2178                         PF_HASHROW_LOCK(ih);
2179                         LIST_FOREACH(s, &ih->states, entry) {
2180
2181                                 if (s->timeout == PFTM_UNLINKED)
2182                                         continue;
2183
2184                                 if ((nr+1) * sizeof(*p) > ps->ps_len) {
2185                                         PF_HASHROW_UNLOCK(ih);
2186                                         goto DIOCGETSTATES_full;
2187                                 }
2188                                 pfsync_state_export(p, s);
2189                                 p++;
2190                                 nr++;
2191                         }
2192                         PF_HASHROW_UNLOCK(ih);
2193                 }
2194 DIOCGETSTATES_full:
2195                 error = copyout(pstore, ps->ps_states,
2196                     sizeof(struct pfsync_state) * nr);
2197                 if (error) {
2198                         free(pstore, M_TEMP);
2199                         break;
2200                 }
2201                 ps->ps_len = sizeof(struct pfsync_state) * nr;
2202                 free(pstore, M_TEMP);
2203
2204                 break;
2205         }
2206
2207         case DIOCGETSTATUS: {
2208                 struct pf_status *s = (struct pf_status *)addr;
2209
2210                 PF_RULES_RLOCK();
2211                 s->running = V_pf_status.running;
2212                 s->since   = V_pf_status.since;
2213                 s->debug   = V_pf_status.debug;
2214                 s->hostid  = V_pf_status.hostid;
2215                 s->states  = V_pf_status.states;
2216                 s->src_nodes = V_pf_status.src_nodes;
2217
2218                 for (int i = 0; i < PFRES_MAX; i++)
2219                         s->counters[i] =
2220                             counter_u64_fetch(V_pf_status.counters[i]);
2221                 for (int i = 0; i < LCNT_MAX; i++)
2222                         s->lcounters[i] =
2223                             counter_u64_fetch(V_pf_status.lcounters[i]);
2224                 for (int i = 0; i < FCNT_MAX; i++)
2225                         s->fcounters[i] =
2226                             counter_u64_fetch(V_pf_status.fcounters[i]);
2227                 for (int i = 0; i < SCNT_MAX; i++)
2228                         s->scounters[i] =
2229                             counter_u64_fetch(V_pf_status.scounters[i]);
2230
2231                 bcopy(V_pf_status.ifname, s->ifname, IFNAMSIZ);
2232                 bcopy(V_pf_status.pf_chksum, s->pf_chksum,
2233                     PF_MD5_DIGEST_LENGTH);
2234
2235                 pfi_update_status(s->ifname, s);
2236                 PF_RULES_RUNLOCK();
2237                 break;
2238         }
2239
2240         case DIOCSETSTATUSIF: {
2241                 struct pfioc_if *pi = (struct pfioc_if *)addr;
2242
2243                 if (pi->ifname[0] == 0) {
2244                         bzero(V_pf_status.ifname, IFNAMSIZ);
2245                         break;
2246                 }
2247                 PF_RULES_WLOCK();
2248                 strlcpy(V_pf_status.ifname, pi->ifname, IFNAMSIZ);
2249                 PF_RULES_WUNLOCK();
2250                 break;
2251         }
2252
2253         case DIOCCLRSTATUS: {
2254                 PF_RULES_WLOCK();
2255                 for (int i = 0; i < PFRES_MAX; i++)
2256                         counter_u64_zero(V_pf_status.counters[i]);
2257                 for (int i = 0; i < FCNT_MAX; i++)
2258                         counter_u64_zero(V_pf_status.fcounters[i]);
2259                 for (int i = 0; i < SCNT_MAX; i++)
2260                         counter_u64_zero(V_pf_status.scounters[i]);
2261                 for (int i = 0; i < LCNT_MAX; i++)
2262                         counter_u64_zero(V_pf_status.lcounters[i]);
2263                 V_pf_status.since = time_second;
2264                 if (*V_pf_status.ifname)
2265                         pfi_update_status(V_pf_status.ifname, NULL);
2266                 PF_RULES_WUNLOCK();
2267                 break;
2268         }
2269
2270         case DIOCNATLOOK: {
2271                 struct pfioc_natlook    *pnl = (struct pfioc_natlook *)addr;
2272                 struct pf_state_key     *sk;
2273                 struct pf_state         *state;
2274                 struct pf_state_key_cmp  key;
2275                 int                      m = 0, direction = pnl->direction;
2276                 int                      sidx, didx;
2277
2278                 /* NATLOOK src and dst are reversed, so reverse sidx/didx */
2279                 sidx = (direction == PF_IN) ? 1 : 0;
2280                 didx = (direction == PF_IN) ? 0 : 1;
2281
2282                 if (!pnl->proto ||
2283                     PF_AZERO(&pnl->saddr, pnl->af) ||
2284                     PF_AZERO(&pnl->daddr, pnl->af) ||
2285                     ((pnl->proto == IPPROTO_TCP ||
2286                     pnl->proto == IPPROTO_UDP) &&
2287                     (!pnl->dport || !pnl->sport)))
2288                         error = EINVAL;
2289                 else {
2290                         bzero(&key, sizeof(key));
2291                         key.af = pnl->af;
2292                         key.proto = pnl->proto;
2293                         PF_ACPY(&key.addr[sidx], &pnl->saddr, pnl->af);
2294                         key.port[sidx] = pnl->sport;
2295                         PF_ACPY(&key.addr[didx], &pnl->daddr, pnl->af);
2296                         key.port[didx] = pnl->dport;
2297
2298                         state = pf_find_state_all(&key, direction, &m);
2299
2300                         if (m > 1)
2301                                 error = E2BIG;  /* more than one state */
2302                         else if (state != NULL) {
2303                                 /* XXXGL: not locked read */
2304                                 sk = state->key[sidx];
2305                                 PF_ACPY(&pnl->rsaddr, &sk->addr[sidx], sk->af);
2306                                 pnl->rsport = sk->port[sidx];
2307                                 PF_ACPY(&pnl->rdaddr, &sk->addr[didx], sk->af);
2308                                 pnl->rdport = sk->port[didx];
2309                         } else
2310                                 error = ENOENT;
2311                 }
2312                 break;
2313         }
2314
2315         case DIOCSETTIMEOUT: {
2316                 struct pfioc_tm *pt = (struct pfioc_tm *)addr;
2317                 int              old;
2318
2319                 if (pt->timeout < 0 || pt->timeout >= PFTM_MAX ||
2320                     pt->seconds < 0) {
2321                         error = EINVAL;
2322                         break;
2323                 }
2324                 PF_RULES_WLOCK();
2325                 old = V_pf_default_rule.timeout[pt->timeout];
2326                 if (pt->timeout == PFTM_INTERVAL && pt->seconds == 0)
2327                         pt->seconds = 1;
2328                 V_pf_default_rule.timeout[pt->timeout] = pt->seconds;
2329                 if (pt->timeout == PFTM_INTERVAL && pt->seconds < old)
2330                         wakeup(pf_purge_thread);
2331                 pt->seconds = old;
2332                 PF_RULES_WUNLOCK();
2333                 break;
2334         }
2335
2336         case DIOCGETTIMEOUT: {
2337                 struct pfioc_tm *pt = (struct pfioc_tm *)addr;
2338
2339                 if (pt->timeout < 0 || pt->timeout >= PFTM_MAX) {
2340                         error = EINVAL;
2341                         break;
2342                 }
2343                 PF_RULES_RLOCK();
2344                 pt->seconds = V_pf_default_rule.timeout[pt->timeout];
2345                 PF_RULES_RUNLOCK();
2346                 break;
2347         }
2348
2349         case DIOCGETLIMIT: {
2350                 struct pfioc_limit      *pl = (struct pfioc_limit *)addr;
2351
2352                 if (pl->index < 0 || pl->index >= PF_LIMIT_MAX) {
2353                         error = EINVAL;
2354                         break;
2355                 }
2356                 PF_RULES_RLOCK();
2357                 pl->limit = V_pf_limits[pl->index].limit;
2358                 PF_RULES_RUNLOCK();
2359                 break;
2360         }
2361
2362         case DIOCSETLIMIT: {
2363                 struct pfioc_limit      *pl = (struct pfioc_limit *)addr;
2364                 int                      old_limit;
2365
2366                 PF_RULES_WLOCK();
2367                 if (pl->index < 0 || pl->index >= PF_LIMIT_MAX ||
2368                     V_pf_limits[pl->index].zone == NULL) {
2369                         PF_RULES_WUNLOCK();
2370                         error = EINVAL;
2371                         break;
2372                 }
2373                 uma_zone_set_max(V_pf_limits[pl->index].zone, pl->limit);
2374                 old_limit = V_pf_limits[pl->index].limit;
2375                 V_pf_limits[pl->index].limit = pl->limit;
2376                 pl->limit = old_limit;
2377                 PF_RULES_WUNLOCK();
2378                 break;
2379         }
2380
2381         case DIOCSETDEBUG: {
2382                 u_int32_t       *level = (u_int32_t *)addr;
2383
2384                 PF_RULES_WLOCK();
2385                 V_pf_status.debug = *level;
2386                 PF_RULES_WUNLOCK();
2387                 break;
2388         }
2389
2390         case DIOCCLRRULECTRS: {
2391                 /* obsoleted by DIOCGETRULE with action=PF_GET_CLR_CNTR */
2392                 struct pf_ruleset       *ruleset = &pf_main_ruleset;
2393                 struct pf_rule          *rule;
2394
2395                 PF_RULES_WLOCK();
2396                 TAILQ_FOREACH(rule,
2397                     ruleset->rules[PF_RULESET_FILTER].active.ptr, entries) {
2398                         rule->evaluations = 0;
2399                         rule->packets[0] = rule->packets[1] = 0;
2400                         rule->bytes[0] = rule->bytes[1] = 0;
2401                 }
2402                 PF_RULES_WUNLOCK();
2403                 break;
2404         }
2405
2406         case DIOCGIFSPEEDV0:
2407         case DIOCGIFSPEEDV1: {
2408                 struct pf_ifspeed_v1    *psp = (struct pf_ifspeed_v1 *)addr;
2409                 struct pf_ifspeed_v1    ps;
2410                 struct ifnet            *ifp;
2411
2412                 if (psp->ifname[0] != 0) {
2413                         /* Can we completely trust user-land? */
2414                         strlcpy(ps.ifname, psp->ifname, IFNAMSIZ);
2415                         ifp = ifunit(ps.ifname);
2416                         if (ifp != NULL) {
2417                                 psp->baudrate32 =
2418                                     (u_int32_t)uqmin(ifp->if_baudrate, UINT_MAX);
2419                                 if (cmd == DIOCGIFSPEEDV1)
2420                                         psp->baudrate = ifp->if_baudrate;
2421                         } else
2422                                 error = EINVAL;
2423                 } else
2424                         error = EINVAL;
2425                 break;
2426         }
2427
2428 #ifdef ALTQ
2429         case DIOCSTARTALTQ: {
2430                 struct pf_altq          *altq;
2431
2432                 PF_RULES_WLOCK();
2433                 /* enable all altq interfaces on active list */
2434                 TAILQ_FOREACH(altq, V_pf_altq_ifs_active, entries) {
2435                         if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) {
2436                                 error = pf_enable_altq(altq);
2437                                 if (error != 0)
2438                                         break;
2439                         }
2440                 }
2441                 if (error == 0)
2442                         V_pf_altq_running = 1;
2443                 PF_RULES_WUNLOCK();
2444                 DPFPRINTF(PF_DEBUG_MISC, ("altq: started\n"));
2445                 break;
2446         }
2447
2448         case DIOCSTOPALTQ: {
2449                 struct pf_altq          *altq;
2450
2451                 PF_RULES_WLOCK();
2452                 /* disable all altq interfaces on active list */
2453                 TAILQ_FOREACH(altq, V_pf_altq_ifs_active, entries) {
2454                         if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) {
2455                                 error = pf_disable_altq(altq);
2456                                 if (error != 0)
2457                                         break;
2458                         }
2459                 }
2460                 if (error == 0)
2461                         V_pf_altq_running = 0;
2462                 PF_RULES_WUNLOCK();
2463                 DPFPRINTF(PF_DEBUG_MISC, ("altq: stopped\n"));
2464                 break;
2465         }
2466
2467         case DIOCADDALTQV0:
2468         case DIOCADDALTQV1: {
2469                 struct pfioc_altq_v1    *pa = (struct pfioc_altq_v1 *)addr;
2470                 struct pf_altq          *altq, *a;
2471                 struct ifnet            *ifp;
2472
2473                 altq = malloc(sizeof(*altq), M_PFALTQ, M_WAITOK | M_ZERO);
2474                 error = pf_import_kaltq(pa, altq, IOCPARM_LEN(cmd));
2475                 if (error)
2476                         break;
2477                 altq->local_flags = 0;
2478
2479                 PF_RULES_WLOCK();
2480                 if (pa->ticket != V_ticket_altqs_inactive) {
2481                         PF_RULES_WUNLOCK();
2482                         free(altq, M_PFALTQ);
2483                         error = EBUSY;
2484                         break;
2485                 }
2486
2487                 /*
2488                  * if this is for a queue, find the discipline and
2489                  * copy the necessary fields
2490                  */
2491                 if (altq->qname[0] != 0) {
2492                         if ((altq->qid = pf_qname2qid(altq->qname)) == 0) {
2493                                 PF_RULES_WUNLOCK();
2494                                 error = EBUSY;
2495                                 free(altq, M_PFALTQ);
2496                                 break;
2497                         }
2498                         altq->altq_disc = NULL;
2499                         TAILQ_FOREACH(a, V_pf_altq_ifs_inactive, entries) {
2500                                 if (strncmp(a->ifname, altq->ifname,
2501                                     IFNAMSIZ) == 0) {
2502                                         altq->altq_disc = a->altq_disc;
2503                                         break;
2504                                 }
2505                         }
2506                 }
2507
2508                 if ((ifp = ifunit(altq->ifname)) == NULL)
2509                         altq->local_flags |= PFALTQ_FLAG_IF_REMOVED;
2510                 else
2511                         error = altq_add(ifp, altq);
2512
2513                 if (error) {
2514                         PF_RULES_WUNLOCK();
2515                         free(altq, M_PFALTQ);
2516                         break;
2517                 }
2518
2519                 if (altq->qname[0] != 0)
2520                         TAILQ_INSERT_TAIL(V_pf_altqs_inactive, altq, entries);
2521                 else
2522                         TAILQ_INSERT_TAIL(V_pf_altq_ifs_inactive, altq, entries);
2523                 /* version error check done on import above */
2524                 pf_export_kaltq(altq, pa, IOCPARM_LEN(cmd));
2525                 PF_RULES_WUNLOCK();
2526                 break;
2527         }
2528
2529         case DIOCGETALTQSV0:
2530         case DIOCGETALTQSV1: {
2531                 struct pfioc_altq_v1    *pa = (struct pfioc_altq_v1 *)addr;
2532                 struct pf_altq          *altq;
2533
2534                 PF_RULES_RLOCK();
2535                 pa->nr = 0;
2536                 TAILQ_FOREACH(altq, V_pf_altq_ifs_active, entries)
2537                         pa->nr++;
2538                 TAILQ_FOREACH(altq, V_pf_altqs_active, entries)
2539                         pa->nr++;
2540                 pa->ticket = V_ticket_altqs_active;
2541                 PF_RULES_RUNLOCK();
2542                 break;
2543         }
2544
2545         case DIOCGETALTQV0:
2546         case DIOCGETALTQV1: {
2547                 struct pfioc_altq_v1    *pa = (struct pfioc_altq_v1 *)addr;
2548                 struct pf_altq          *altq;
2549
2550                 PF_RULES_RLOCK();
2551                 if (pa->ticket != V_ticket_altqs_active) {
2552                         PF_RULES_RUNLOCK();
2553                         error = EBUSY;
2554                         break;
2555                 }
2556                 altq = pf_altq_get_nth_active(pa->nr);
2557                 if (altq == NULL) {
2558                         PF_RULES_RUNLOCK();
2559                         error = EBUSY;
2560                         break;
2561                 }
2562                 pf_export_kaltq(altq, pa, IOCPARM_LEN(cmd));
2563                 PF_RULES_RUNLOCK();
2564                 break;
2565         }
2566
2567         case DIOCCHANGEALTQV0:
2568         case DIOCCHANGEALTQV1:
2569                 /* CHANGEALTQ not supported yet! */
2570                 error = ENODEV;
2571                 break;
2572
2573         case DIOCGETQSTATSV0:
2574         case DIOCGETQSTATSV1: {
2575                 struct pfioc_qstats_v1  *pq = (struct pfioc_qstats_v1 *)addr;
2576                 struct pf_altq          *altq;
2577                 int                      nbytes;
2578                 u_int32_t                version;
2579
2580                 PF_RULES_RLOCK();
2581                 if (pq->ticket != V_ticket_altqs_active) {
2582                         PF_RULES_RUNLOCK();
2583                         error = EBUSY;
2584                         break;
2585                 }
2586                 nbytes = pq->nbytes;
2587                 altq = pf_altq_get_nth_active(pq->nr);
2588                 if (altq == NULL) {
2589                         PF_RULES_RUNLOCK();
2590                         error = EBUSY;
2591                         break;
2592                 }
2593
2594                 if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) != 0) {
2595                         PF_RULES_RUNLOCK();
2596                         error = ENXIO;
2597                         break;
2598                 }
2599                 PF_RULES_RUNLOCK();
2600                 if (cmd == DIOCGETQSTATSV0)
2601                         version = 0;  /* DIOCGETQSTATSV0 means stats struct v0 */
2602                 else
2603                         version = pq->version;
2604                 error = altq_getqstats(altq, pq->buf, &nbytes, version);
2605                 if (error == 0) {
2606                         pq->scheduler = altq->scheduler;
2607                         pq->nbytes = nbytes;
2608                 }
2609                 break;
2610         }
2611 #endif /* ALTQ */
2612
2613         case DIOCBEGINADDRS: {
2614                 struct pfioc_pooladdr   *pp = (struct pfioc_pooladdr *)addr;
2615
2616                 PF_RULES_WLOCK();
2617                 pf_empty_pool(&V_pf_pabuf);
2618                 pp->ticket = ++V_ticket_pabuf;
2619                 PF_RULES_WUNLOCK();
2620                 break;
2621         }
2622
2623         case DIOCADDADDR: {
2624                 struct pfioc_pooladdr   *pp = (struct pfioc_pooladdr *)addr;
2625                 struct pf_pooladdr      *pa;
2626                 struct pfi_kif          *kif = NULL;
2627
2628 #ifndef INET
2629                 if (pp->af == AF_INET) {
2630                         error = EAFNOSUPPORT;
2631                         break;
2632                 }
2633 #endif /* INET */
2634 #ifndef INET6
2635                 if (pp->af == AF_INET6) {
2636                         error = EAFNOSUPPORT;
2637                         break;
2638                 }
2639 #endif /* INET6 */
2640                 if (pp->addr.addr.type != PF_ADDR_ADDRMASK &&
2641                     pp->addr.addr.type != PF_ADDR_DYNIFTL &&
2642                     pp->addr.addr.type != PF_ADDR_TABLE) {
2643                         error = EINVAL;
2644                         break;
2645                 }
2646                 pa = malloc(sizeof(*pa), M_PFRULE, M_WAITOK);
2647                 bcopy(&pp->addr, pa, sizeof(struct pf_pooladdr));
2648                 if (pa->ifname[0])
2649                         kif = malloc(sizeof(*kif), PFI_MTYPE, M_WAITOK);
2650                 PF_RULES_WLOCK();
2651                 if (pp->ticket != V_ticket_pabuf) {
2652                         PF_RULES_WUNLOCK();
2653                         if (pa->ifname[0])
2654                                 free(kif, PFI_MTYPE);
2655                         free(pa, M_PFRULE);
2656                         error = EBUSY;
2657                         break;
2658                 }
2659                 if (pa->ifname[0]) {
2660                         pa->kif = pfi_kif_attach(kif, pa->ifname);
2661                         pfi_kif_ref(pa->kif);
2662                 } else
2663                         pa->kif = NULL;
2664                 if (pa->addr.type == PF_ADDR_DYNIFTL && ((error =
2665                     pfi_dynaddr_setup(&pa->addr, pp->af)) != 0)) {
2666                         if (pa->ifname[0])
2667                                 pfi_kif_unref(pa->kif);
2668                         PF_RULES_WUNLOCK();
2669                         free(pa, M_PFRULE);
2670                         break;
2671                 }
2672                 TAILQ_INSERT_TAIL(&V_pf_pabuf, pa, entries);
2673                 PF_RULES_WUNLOCK();
2674                 break;
2675         }
2676
2677         case DIOCGETADDRS: {
2678                 struct pfioc_pooladdr   *pp = (struct pfioc_pooladdr *)addr;
2679                 struct pf_pool          *pool;
2680                 struct pf_pooladdr      *pa;
2681
2682                 PF_RULES_RLOCK();
2683                 pp->nr = 0;
2684                 pool = pf_get_pool(pp->anchor, pp->ticket, pp->r_action,
2685                     pp->r_num, 0, 1, 0);
2686                 if (pool == NULL) {
2687                         PF_RULES_RUNLOCK();
2688                         error = EBUSY;
2689                         break;
2690                 }
2691                 TAILQ_FOREACH(pa, &pool->list, entries)
2692                         pp->nr++;
2693                 PF_RULES_RUNLOCK();
2694                 break;
2695         }
2696
2697         case DIOCGETADDR: {
2698                 struct pfioc_pooladdr   *pp = (struct pfioc_pooladdr *)addr;
2699                 struct pf_pool          *pool;
2700                 struct pf_pooladdr      *pa;
2701                 u_int32_t                nr = 0;
2702
2703                 PF_RULES_RLOCK();
2704                 pool = pf_get_pool(pp->anchor, pp->ticket, pp->r_action,
2705                     pp->r_num, 0, 1, 1);
2706                 if (pool == NULL) {
2707                         PF_RULES_RUNLOCK();
2708                         error = EBUSY;
2709                         break;
2710                 }
2711                 pa = TAILQ_FIRST(&pool->list);
2712                 while ((pa != NULL) && (nr < pp->nr)) {
2713                         pa = TAILQ_NEXT(pa, entries);
2714                         nr++;
2715                 }
2716                 if (pa == NULL) {
2717                         PF_RULES_RUNLOCK();
2718                         error = EBUSY;
2719                         break;
2720                 }
2721                 bcopy(pa, &pp->addr, sizeof(struct pf_pooladdr));
2722                 pf_addr_copyout(&pp->addr.addr);
2723                 PF_RULES_RUNLOCK();
2724                 break;
2725         }
2726
2727         case DIOCCHANGEADDR: {
2728                 struct pfioc_pooladdr   *pca = (struct pfioc_pooladdr *)addr;
2729                 struct pf_pool          *pool;
2730                 struct pf_pooladdr      *oldpa = NULL, *newpa = NULL;
2731                 struct pf_ruleset       *ruleset;
2732                 struct pfi_kif          *kif = NULL;
2733
2734                 if (pca->action < PF_CHANGE_ADD_HEAD ||
2735                     pca->action > PF_CHANGE_REMOVE) {
2736                         error = EINVAL;
2737                         break;
2738                 }
2739                 if (pca->addr.addr.type != PF_ADDR_ADDRMASK &&
2740                     pca->addr.addr.type != PF_ADDR_DYNIFTL &&
2741                     pca->addr.addr.type != PF_ADDR_TABLE) {
2742                         error = EINVAL;
2743                         break;
2744                 }
2745
2746                 if (pca->action != PF_CHANGE_REMOVE) {
2747 #ifndef INET
2748                         if (pca->af == AF_INET) {
2749                                 error = EAFNOSUPPORT;
2750                                 break;
2751                         }
2752 #endif /* INET */
2753 #ifndef INET6
2754                         if (pca->af == AF_INET6) {
2755                                 error = EAFNOSUPPORT;
2756                                 break;
2757                         }
2758 #endif /* INET6 */
2759                         newpa = malloc(sizeof(*newpa), M_PFRULE, M_WAITOK);
2760                         bcopy(&pca->addr, newpa, sizeof(struct pf_pooladdr));
2761                         if (newpa->ifname[0])
2762                                 kif = malloc(sizeof(*kif), PFI_MTYPE, M_WAITOK);
2763                         newpa->kif = NULL;
2764                 }
2765
2766 #define ERROUT(x)       { error = (x); goto DIOCCHANGEADDR_error; }
2767                 PF_RULES_WLOCK();
2768                 ruleset = pf_find_ruleset(pca->anchor);
2769                 if (ruleset == NULL)
2770                         ERROUT(EBUSY);
2771
2772                 pool = pf_get_pool(pca->anchor, pca->ticket, pca->r_action,
2773                     pca->r_num, pca->r_last, 1, 1);
2774                 if (pool == NULL)
2775                         ERROUT(EBUSY);
2776
2777                 if (pca->action != PF_CHANGE_REMOVE) {
2778                         if (newpa->ifname[0]) {
2779                                 newpa->kif = pfi_kif_attach(kif, newpa->ifname);
2780                                 pfi_kif_ref(newpa->kif);
2781                                 kif = NULL;
2782                         }
2783
2784                         switch (newpa->addr.type) {
2785                         case PF_ADDR_DYNIFTL:
2786                                 error = pfi_dynaddr_setup(&newpa->addr,
2787                                     pca->af);
2788                                 break;
2789                         case PF_ADDR_TABLE:
2790                                 newpa->addr.p.tbl = pfr_attach_table(ruleset,
2791                                     newpa->addr.v.tblname);
2792                                 if (newpa->addr.p.tbl == NULL)
2793                                         error = ENOMEM;
2794                                 break;
2795                         }
2796                         if (error)
2797                                 goto DIOCCHANGEADDR_error;
2798                 }
2799
2800                 switch (pca->action) {
2801                 case PF_CHANGE_ADD_HEAD:
2802                         oldpa = TAILQ_FIRST(&pool->list);
2803                         break;
2804                 case PF_CHANGE_ADD_TAIL:
2805                         oldpa = TAILQ_LAST(&pool->list, pf_palist);
2806                         break;
2807                 default:
2808                         oldpa = TAILQ_FIRST(&pool->list);
2809                         for (int i = 0; oldpa && i < pca->nr; i++)
2810                                 oldpa = TAILQ_NEXT(oldpa, entries);
2811
2812                         if (oldpa == NULL)
2813                                 ERROUT(EINVAL);
2814                 }
2815
2816                 if (pca->action == PF_CHANGE_REMOVE) {
2817                         TAILQ_REMOVE(&pool->list, oldpa, entries);
2818                         switch (oldpa->addr.type) {
2819                         case PF_ADDR_DYNIFTL:
2820                                 pfi_dynaddr_remove(oldpa->addr.p.dyn);
2821                                 break;
2822                         case PF_ADDR_TABLE:
2823                                 pfr_detach_table(oldpa->addr.p.tbl);
2824                                 break;
2825                         }
2826                         if (oldpa->kif)
2827                                 pfi_kif_unref(oldpa->kif);
2828                         free(oldpa, M_PFRULE);
2829                 } else {
2830                         if (oldpa == NULL)
2831                                 TAILQ_INSERT_TAIL(&pool->list, newpa, entries);
2832                         else if (pca->action == PF_CHANGE_ADD_HEAD ||
2833                             pca->action == PF_CHANGE_ADD_BEFORE)
2834                                 TAILQ_INSERT_BEFORE(oldpa, newpa, entries);
2835                         else
2836                                 TAILQ_INSERT_AFTER(&pool->list, oldpa,
2837                                     newpa, entries);
2838                 }
2839
2840                 pool->cur = TAILQ_FIRST(&pool->list);
2841                 PF_ACPY(&pool->counter, &pool->cur->addr.v.a.addr, pca->af);
2842                 PF_RULES_WUNLOCK();
2843                 break;
2844
2845 #undef ERROUT
2846 DIOCCHANGEADDR_error:
2847                 if (newpa != NULL) {
2848                         if (newpa->kif)
2849                                 pfi_kif_unref(newpa->kif);
2850                         free(newpa, M_PFRULE);
2851                 }
2852                 PF_RULES_WUNLOCK();
2853                 if (kif != NULL)
2854                         free(kif, PFI_MTYPE);
2855                 break;
2856         }
2857
2858         case DIOCGETRULESETS: {
2859                 struct pfioc_ruleset    *pr = (struct pfioc_ruleset *)addr;
2860                 struct pf_ruleset       *ruleset;
2861                 struct pf_anchor        *anchor;
2862
2863                 PF_RULES_RLOCK();
2864                 pr->path[sizeof(pr->path) - 1] = 0;
2865                 if ((ruleset = pf_find_ruleset(pr->path)) == NULL) {
2866                         PF_RULES_RUNLOCK();
2867                         error = ENOENT;
2868                         break;
2869                 }
2870                 pr->nr = 0;
2871                 if (ruleset->anchor == NULL) {
2872                         /* XXX kludge for pf_main_ruleset */
2873                         RB_FOREACH(anchor, pf_anchor_global, &V_pf_anchors)
2874                                 if (anchor->parent == NULL)
2875                                         pr->nr++;
2876                 } else {
2877                         RB_FOREACH(anchor, pf_anchor_node,
2878                             &ruleset->anchor->children)
2879                                 pr->nr++;
2880                 }
2881                 PF_RULES_RUNLOCK();
2882                 break;
2883         }
2884
2885         case DIOCGETRULESET: {
2886                 struct pfioc_ruleset    *pr = (struct pfioc_ruleset *)addr;
2887                 struct pf_ruleset       *ruleset;
2888                 struct pf_anchor        *anchor;
2889                 u_int32_t                nr = 0;
2890
2891                 PF_RULES_RLOCK();
2892                 pr->path[sizeof(pr->path) - 1] = 0;
2893                 if ((ruleset = pf_find_ruleset(pr->path)) == NULL) {
2894                         PF_RULES_RUNLOCK();
2895                         error = ENOENT;
2896                         break;
2897                 }
2898                 pr->name[0] = 0;
2899                 if (ruleset->anchor == NULL) {
2900                         /* XXX kludge for pf_main_ruleset */
2901                         RB_FOREACH(anchor, pf_anchor_global, &V_pf_anchors)
2902                                 if (anchor->parent == NULL && nr++ == pr->nr) {
2903                                         strlcpy(pr->name, anchor->name,
2904                                             sizeof(pr->name));
2905                                         break;
2906                                 }
2907                 } else {
2908                         RB_FOREACH(anchor, pf_anchor_node,
2909                             &ruleset->anchor->children)
2910                                 if (nr++ == pr->nr) {
2911                                         strlcpy(pr->name, anchor->name,
2912                                             sizeof(pr->name));
2913                                         break;
2914                                 }
2915                 }
2916                 if (!pr->name[0])
2917                         error = EBUSY;
2918                 PF_RULES_RUNLOCK();
2919                 break;
2920         }
2921
2922         case DIOCRCLRTABLES: {
2923                 struct pfioc_table *io = (struct pfioc_table *)addr;
2924
2925                 if (io->pfrio_esize != 0) {
2926                         error = ENODEV;
2927                         break;
2928                 }
2929                 PF_RULES_WLOCK();
2930                 error = pfr_clr_tables(&io->pfrio_table, &io->pfrio_ndel,
2931                     io->pfrio_flags | PFR_FLAG_USERIOCTL);
2932                 PF_RULES_WUNLOCK();
2933                 break;
2934         }
2935
2936         case DIOCRADDTABLES: {
2937                 struct pfioc_table *io = (struct pfioc_table *)addr;
2938                 struct pfr_table *pfrts;
2939                 size_t totlen;
2940
2941                 if (io->pfrio_esize != sizeof(struct pfr_table)) {
2942                         error = ENODEV;
2943                         break;
2944                 }
2945
2946                 if (io->pfrio_size < 0 || io->pfrio_size > pf_ioctl_maxcount ||
2947                     WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_table))) {
2948                         error = ENOMEM;
2949                         break;
2950                 }
2951
2952                 totlen = io->pfrio_size * sizeof(struct pfr_table);
2953                 pfrts = mallocarray(io->pfrio_size, sizeof(struct pfr_table),
2954                     M_TEMP, M_WAITOK);
2955                 error = copyin(io->pfrio_buffer, pfrts, totlen);
2956                 if (error) {
2957                         free(pfrts, M_TEMP);
2958                         break;
2959                 }
2960                 PF_RULES_WLOCK();
2961                 error = pfr_add_tables(pfrts, io->pfrio_size,
2962                     &io->pfrio_nadd, io->pfrio_flags | PFR_FLAG_USERIOCTL);
2963                 PF_RULES_WUNLOCK();
2964                 free(pfrts, M_TEMP);
2965                 break;
2966         }
2967
2968         case DIOCRDELTABLES: {
2969                 struct pfioc_table *io = (struct pfioc_table *)addr;
2970                 struct pfr_table *pfrts;
2971                 size_t totlen;
2972
2973                 if (io->pfrio_esize != sizeof(struct pfr_table)) {
2974                         error = ENODEV;
2975                         break;
2976                 }
2977
2978                 if (io->pfrio_size < 0 || io->pfrio_size > pf_ioctl_maxcount ||
2979                     WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_table))) {
2980                         error = ENOMEM;
2981                         break;
2982                 }
2983
2984                 totlen = io->pfrio_size * sizeof(struct pfr_table);
2985                 pfrts = mallocarray(io->pfrio_size, sizeof(struct pfr_table),
2986                     M_TEMP, M_WAITOK);
2987                 error = copyin(io->pfrio_buffer, pfrts, totlen);
2988                 if (error) {
2989                         free(pfrts, M_TEMP);
2990                         break;
2991                 }
2992                 PF_RULES_WLOCK();
2993                 error = pfr_del_tables(pfrts, io->pfrio_size,
2994                     &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL);
2995                 PF_RULES_WUNLOCK();
2996                 free(pfrts, M_TEMP);
2997                 break;
2998         }
2999
3000         case DIOCRGETTABLES: {
3001                 struct pfioc_table *io = (struct pfioc_table *)addr;
3002                 struct pfr_table *pfrts;
3003                 size_t totlen, n;
3004
3005                 if (io->pfrio_esize != sizeof(struct pfr_table)) {
3006                         error = ENODEV;
3007                         break;
3008                 }
3009                 PF_RULES_RLOCK();
3010                 n = pfr_table_count(&io->pfrio_table, io->pfrio_flags);
3011                 io->pfrio_size = min(io->pfrio_size, n);
3012
3013                 totlen = io->pfrio_size * sizeof(struct pfr_table);
3014
3015                 pfrts = mallocarray(io->pfrio_size, sizeof(struct pfr_table),
3016                     M_TEMP, M_NOWAIT);
3017                 if (pfrts == NULL) {
3018                         error = ENOMEM;
3019                         PF_RULES_RUNLOCK();
3020                         break;
3021                 }
3022                 error = pfr_get_tables(&io->pfrio_table, pfrts,
3023                     &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL);
3024                 PF_RULES_RUNLOCK();
3025                 if (error == 0)
3026                         error = copyout(pfrts, io->pfrio_buffer, totlen);
3027                 free(pfrts, M_TEMP);
3028                 break;
3029         }
3030
3031         case DIOCRGETTSTATS: {
3032                 struct pfioc_table *io = (struct pfioc_table *)addr;
3033                 struct pfr_tstats *pfrtstats;
3034                 size_t totlen, n;
3035
3036                 if (io->pfrio_esize != sizeof(struct pfr_tstats)) {
3037                         error = ENODEV;
3038                         break;
3039                 }
3040                 PF_RULES_WLOCK();
3041                 n = pfr_table_count(&io->pfrio_table, io->pfrio_flags);
3042                 io->pfrio_size = min(io->pfrio_size, n);
3043
3044                 totlen = io->pfrio_size * sizeof(struct pfr_tstats);
3045                 pfrtstats = mallocarray(io->pfrio_size,
3046                     sizeof(struct pfr_tstats), M_TEMP, M_NOWAIT);
3047                 if (pfrtstats == NULL) {
3048                         error = ENOMEM;
3049                         PF_RULES_WUNLOCK();
3050                         break;
3051                 }
3052                 error = pfr_get_tstats(&io->pfrio_table, pfrtstats,
3053                     &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL);
3054                 PF_RULES_WUNLOCK();
3055                 if (error == 0)
3056                         error = copyout(pfrtstats, io->pfrio_buffer, totlen);
3057                 free(pfrtstats, M_TEMP);
3058                 break;
3059         }
3060
3061         case DIOCRCLRTSTATS: {
3062                 struct pfioc_table *io = (struct pfioc_table *)addr;
3063                 struct pfr_table *pfrts;
3064                 size_t totlen, n;
3065
3066                 if (io->pfrio_esize != sizeof(struct pfr_table)) {
3067                         error = ENODEV;
3068                         break;
3069                 }
3070
3071                 PF_RULES_WLOCK();
3072                 n = pfr_table_count(&io->pfrio_table, io->pfrio_flags);
3073                 io->pfrio_size = min(io->pfrio_size, n);
3074
3075                 totlen = io->pfrio_size * sizeof(struct pfr_table);
3076                 pfrts = mallocarray(io->pfrio_size, sizeof(struct pfr_table),
3077                     M_TEMP, M_NOWAIT);
3078                 if (pfrts == NULL) {
3079                         error = ENOMEM;
3080                         PF_RULES_WUNLOCK();
3081                         break;
3082                 }
3083                 error = copyin(io->pfrio_buffer, pfrts, totlen);
3084                 if (error) {
3085                         free(pfrts, M_TEMP);
3086                         PF_RULES_WUNLOCK();
3087                         break;
3088                 }
3089                 error = pfr_clr_tstats(pfrts, io->pfrio_size,
3090                     &io->pfrio_nzero, io->pfrio_flags | PFR_FLAG_USERIOCTL);
3091                 PF_RULES_WUNLOCK();
3092                 free(pfrts, M_TEMP);
3093                 break;
3094         }
3095
3096         case DIOCRSETTFLAGS: {
3097                 struct pfioc_table *io = (struct pfioc_table *)addr;
3098                 struct pfr_table *pfrts;
3099                 size_t totlen, n;
3100
3101                 if (io->pfrio_esize != sizeof(struct pfr_table)) {
3102                         error = ENODEV;
3103                         break;
3104                 }
3105
3106                 PF_RULES_RLOCK();
3107                 n = pfr_table_count(&io->pfrio_table, io->pfrio_flags);
3108                 io->pfrio_size = min(io->pfrio_size, n);
3109                 PF_RULES_RUNLOCK();
3110
3111                 totlen = io->pfrio_size * sizeof(struct pfr_table);
3112                 pfrts = mallocarray(io->pfrio_size, sizeof(struct pfr_table),
3113                     M_TEMP, M_NOWAIT);
3114                 if (pfrts == NULL) {
3115                         error = ENOMEM;
3116                         break;
3117                 }
3118                 error = copyin(io->pfrio_buffer, pfrts, totlen);
3119                 if (error) {
3120                         free(pfrts, M_TEMP);
3121                         break;
3122                 }
3123                 PF_RULES_WLOCK();
3124                 error = pfr_set_tflags(pfrts, io->pfrio_size,
3125                     io->pfrio_setflag, io->pfrio_clrflag, &io->pfrio_nchange,
3126                     &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL);
3127                 PF_RULES_WUNLOCK();
3128                 free(pfrts, M_TEMP);
3129                 break;
3130         }
3131
3132         case DIOCRCLRADDRS: {
3133                 struct pfioc_table *io = (struct pfioc_table *)addr;
3134
3135                 if (io->pfrio_esize != 0) {
3136                         error = ENODEV;
3137                         break;
3138                 }
3139                 PF_RULES_WLOCK();
3140                 error = pfr_clr_addrs(&io->pfrio_table, &io->pfrio_ndel,
3141                     io->pfrio_flags | PFR_FLAG_USERIOCTL);
3142                 PF_RULES_WUNLOCK();
3143                 break;
3144         }
3145
3146         case DIOCRADDADDRS: {
3147                 struct pfioc_table *io = (struct pfioc_table *)addr;
3148                 struct pfr_addr *pfras;
3149                 size_t totlen;
3150
3151                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
3152                         error = ENODEV;
3153                         break;
3154                 }
3155                 if (io->pfrio_size < 0 ||
3156                     io->pfrio_size > pf_ioctl_maxcount ||
3157                     WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_addr))) {
3158                         error = EINVAL;
3159                         break;
3160                 }
3161                 totlen = io->pfrio_size * sizeof(struct pfr_addr);
3162                 pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr),
3163                     M_TEMP, M_NOWAIT);
3164                 if (! pfras) {
3165                         error = ENOMEM;
3166                         break;
3167                 }
3168                 error = copyin(io->pfrio_buffer, pfras, totlen);
3169                 if (error) {
3170                         free(pfras, M_TEMP);
3171                         break;
3172                 }
3173                 PF_RULES_WLOCK();
3174                 error = pfr_add_addrs(&io->pfrio_table, pfras,
3175                     io->pfrio_size, &io->pfrio_nadd, io->pfrio_flags |
3176                     PFR_FLAG_USERIOCTL);
3177                 PF_RULES_WUNLOCK();
3178                 if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK)
3179                         error = copyout(pfras, io->pfrio_buffer, totlen);
3180                 free(pfras, M_TEMP);
3181                 break;
3182         }
3183
3184         case DIOCRDELADDRS: {
3185                 struct pfioc_table *io = (struct pfioc_table *)addr;
3186                 struct pfr_addr *pfras;
3187                 size_t totlen;
3188
3189                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
3190                         error = ENODEV;
3191                         break;
3192                 }
3193                 if (io->pfrio_size < 0 ||
3194                     io->pfrio_size > pf_ioctl_maxcount ||
3195                     WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_addr))) {
3196                         error = EINVAL;
3197                         break;
3198                 }
3199                 totlen = io->pfrio_size * sizeof(struct pfr_addr);
3200                 pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr),
3201                     M_TEMP, M_NOWAIT);
3202                 if (! pfras) {
3203                         error = ENOMEM;
3204                         break;
3205                 }
3206                 error = copyin(io->pfrio_buffer, pfras, totlen);
3207                 if (error) {
3208                         free(pfras, M_TEMP);
3209                         break;
3210                 }
3211                 PF_RULES_WLOCK();
3212                 error = pfr_del_addrs(&io->pfrio_table, pfras,
3213                     io->pfrio_size, &io->pfrio_ndel, io->pfrio_flags |
3214                     PFR_FLAG_USERIOCTL);
3215                 PF_RULES_WUNLOCK();
3216                 if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK)
3217                         error = copyout(pfras, io->pfrio_buffer, totlen);
3218                 free(pfras, M_TEMP);
3219                 break;
3220         }
3221
3222         case DIOCRSETADDRS: {
3223                 struct pfioc_table *io = (struct pfioc_table *)addr;
3224                 struct pfr_addr *pfras;
3225                 size_t totlen, count;
3226
3227                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
3228                         error = ENODEV;
3229                         break;
3230                 }
3231                 if (io->pfrio_size < 0 || io->pfrio_size2 < 0) {
3232                         error = EINVAL;
3233                         break;
3234                 }
3235                 count = max(io->pfrio_size, io->pfrio_size2);
3236                 if (count > pf_ioctl_maxcount ||
3237                     WOULD_OVERFLOW(count, sizeof(struct pfr_addr))) {
3238                         error = EINVAL;
3239                         break;
3240                 }
3241                 totlen = count * sizeof(struct pfr_addr);
3242                 pfras = mallocarray(count, sizeof(struct pfr_addr), M_TEMP,
3243                     M_NOWAIT);
3244                 if (! pfras) {
3245                         error = ENOMEM;
3246                         break;
3247                 }
3248                 error = copyin(io->pfrio_buffer, pfras, totlen);
3249                 if (error) {
3250                         free(pfras, M_TEMP);
3251                         break;
3252                 }
3253                 PF_RULES_WLOCK();
3254                 error = pfr_set_addrs(&io->pfrio_table, pfras,
3255                     io->pfrio_size, &io->pfrio_size2, &io->pfrio_nadd,
3256                     &io->pfrio_ndel, &io->pfrio_nchange, io->pfrio_flags |
3257                     PFR_FLAG_USERIOCTL, 0);
3258                 PF_RULES_WUNLOCK();
3259                 if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK)
3260                         error = copyout(pfras, io->pfrio_buffer, totlen);
3261                 free(pfras, M_TEMP);
3262                 break;
3263         }
3264
3265         case DIOCRGETADDRS: {
3266                 struct pfioc_table *io = (struct pfioc_table *)addr;
3267                 struct pfr_addr *pfras;
3268                 size_t totlen;
3269
3270                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
3271                         error = ENODEV;
3272                         break;
3273                 }
3274                 if (io->pfrio_size < 0 ||
3275                     io->pfrio_size > pf_ioctl_maxcount ||
3276                     WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_addr))) {
3277                         error = EINVAL;
3278                         break;
3279                 }
3280                 totlen = io->pfrio_size * sizeof(struct pfr_addr);
3281                 pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr),
3282                     M_TEMP, M_NOWAIT);
3283                 if (! pfras) {
3284                         error = ENOMEM;
3285                         break;
3286                 }
3287                 PF_RULES_RLOCK();
3288                 error = pfr_get_addrs(&io->pfrio_table, pfras,
3289                     &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL);
3290                 PF_RULES_RUNLOCK();
3291                 if (error == 0)
3292                         error = copyout(pfras, io->pfrio_buffer, totlen);
3293                 free(pfras, M_TEMP);
3294                 break;
3295         }
3296
3297         case DIOCRGETASTATS: {
3298                 struct pfioc_table *io = (struct pfioc_table *)addr;
3299                 struct pfr_astats *pfrastats;
3300                 size_t totlen;
3301
3302                 if (io->pfrio_esize != sizeof(struct pfr_astats)) {
3303                         error = ENODEV;
3304                         break;
3305                 }
3306                 if (io->pfrio_size < 0 ||
3307                     io->pfrio_size > pf_ioctl_maxcount ||
3308                     WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_astats))) {
3309                         error = EINVAL;
3310                         break;
3311                 }
3312                 totlen = io->pfrio_size * sizeof(struct pfr_astats);
3313                 pfrastats = mallocarray(io->pfrio_size,
3314                     sizeof(struct pfr_astats), M_TEMP, M_NOWAIT);
3315                 if (! pfrastats) {
3316                         error = ENOMEM;
3317                         break;
3318                 }
3319                 PF_RULES_RLOCK();
3320                 error = pfr_get_astats(&io->pfrio_table, pfrastats,
3321                     &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL);
3322                 PF_RULES_RUNLOCK();
3323                 if (error == 0)
3324                         error = copyout(pfrastats, io->pfrio_buffer, totlen);
3325                 free(pfrastats, M_TEMP);
3326                 break;
3327         }
3328
3329         case DIOCRCLRASTATS: {
3330                 struct pfioc_table *io = (struct pfioc_table *)addr;
3331                 struct pfr_addr *pfras;
3332                 size_t totlen;
3333
3334                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
3335                         error = ENODEV;
3336                         break;
3337                 }
3338                 if (io->pfrio_size < 0 ||
3339                     io->pfrio_size > pf_ioctl_maxcount ||
3340                     WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_addr))) {
3341                         error = EINVAL;
3342                         break;
3343                 }
3344                 totlen = io->pfrio_size * sizeof(struct pfr_addr);
3345                 pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr),
3346                     M_TEMP, M_NOWAIT);
3347                 if (! pfras) {
3348                         error = ENOMEM;
3349                         break;
3350                 }
3351                 error = copyin(io->pfrio_buffer, pfras, totlen);
3352                 if (error) {
3353                         free(pfras, M_TEMP);
3354                         break;
3355                 }
3356                 PF_RULES_WLOCK();
3357                 error = pfr_clr_astats(&io->pfrio_table, pfras,
3358                     io->pfrio_size, &io->pfrio_nzero, io->pfrio_flags |
3359                     PFR_FLAG_USERIOCTL);
3360                 PF_RULES_WUNLOCK();
3361                 if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK)
3362                         error = copyout(pfras, io->pfrio_buffer, totlen);
3363                 free(pfras, M_TEMP);
3364                 break;
3365         }
3366
3367         case DIOCRTSTADDRS: {
3368                 struct pfioc_table *io = (struct pfioc_table *)addr;
3369                 struct pfr_addr *pfras;
3370                 size_t totlen;
3371
3372                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
3373                         error = ENODEV;
3374                         break;
3375                 }
3376                 if (io->pfrio_size < 0 ||
3377                     io->pfrio_size > pf_ioctl_maxcount ||
3378                     WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_addr))) {
3379                         error = EINVAL;
3380                         break;
3381                 }
3382                 totlen = io->pfrio_size * sizeof(struct pfr_addr);
3383                 pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr),
3384                     M_TEMP, M_NOWAIT);
3385                 if (! pfras) {
3386                         error = ENOMEM;
3387                         break;
3388                 }
3389                 error = copyin(io->pfrio_buffer, pfras, totlen);
3390                 if (error) {
3391                         free(pfras, M_TEMP);
3392                         break;
3393                 }
3394                 PF_RULES_RLOCK();
3395                 error = pfr_tst_addrs(&io->pfrio_table, pfras,
3396                     io->pfrio_size, &io->pfrio_nmatch, io->pfrio_flags |
3397                     PFR_FLAG_USERIOCTL);
3398                 PF_RULES_RUNLOCK();
3399                 if (error == 0)
3400                         error = copyout(pfras, io->pfrio_buffer, totlen);
3401                 free(pfras, M_TEMP);
3402                 break;
3403         }
3404
3405         case DIOCRINADEFINE: {
3406                 struct pfioc_table *io = (struct pfioc_table *)addr;
3407                 struct pfr_addr *pfras;
3408                 size_t totlen;
3409
3410                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
3411                         error = ENODEV;
3412                         break;
3413                 }
3414                 if (io->pfrio_size < 0 ||
3415                     io->pfrio_size > pf_ioctl_maxcount ||
3416                     WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_addr))) {
3417                         error = EINVAL;
3418                         break;
3419                 }
3420                 totlen = io->pfrio_size * sizeof(struct pfr_addr);
3421                 pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr),
3422                     M_TEMP, M_NOWAIT);
3423                 if (! pfras) {
3424                         error = ENOMEM;
3425                         break;
3426                 }
3427                 error = copyin(io->pfrio_buffer, pfras, totlen);
3428                 if (error) {
3429                         free(pfras, M_TEMP);
3430                         break;
3431                 }
3432                 PF_RULES_WLOCK();
3433                 error = pfr_ina_define(&io->pfrio_table, pfras,
3434                     io->pfrio_size, &io->pfrio_nadd, &io->pfrio_naddr,
3435                     io->pfrio_ticket, io->pfrio_flags | PFR_FLAG_USERIOCTL);
3436                 PF_RULES_WUNLOCK();
3437                 free(pfras, M_TEMP);
3438                 break;
3439         }
3440
3441         case DIOCOSFPADD: {
3442                 struct pf_osfp_ioctl *io = (struct pf_osfp_ioctl *)addr;
3443                 PF_RULES_WLOCK();
3444                 error = pf_osfp_add(io);
3445                 PF_RULES_WUNLOCK();
3446                 break;
3447         }
3448
3449         case DIOCOSFPGET: {
3450                 struct pf_osfp_ioctl *io = (struct pf_osfp_ioctl *)addr;
3451                 PF_RULES_RLOCK();
3452                 error = pf_osfp_get(io);
3453                 PF_RULES_RUNLOCK();
3454                 break;
3455         }
3456
3457         case DIOCXBEGIN: {
3458                 struct pfioc_trans      *io = (struct pfioc_trans *)addr;
3459                 struct pfioc_trans_e    *ioes, *ioe;
3460                 size_t                   totlen;
3461                 int                      i;
3462
3463                 if (io->esize != sizeof(*ioe)) {
3464                         error = ENODEV;
3465                         break;
3466                 }
3467                 if (io->size < 0 ||
3468                     io->size > pf_ioctl_maxcount ||
3469                     WOULD_OVERFLOW(io->size, sizeof(struct pfioc_trans_e))) {
3470                         error = EINVAL;
3471                         break;
3472                 }
3473                 totlen = sizeof(struct pfioc_trans_e) * io->size;
3474                 ioes = mallocarray(io->size, sizeof(struct pfioc_trans_e),
3475                     M_TEMP, M_NOWAIT);
3476                 if (! ioes) {
3477                         error = ENOMEM;
3478                         break;
3479                 }
3480                 error = copyin(io->array, ioes, totlen);
3481                 if (error) {
3482                         free(ioes, M_TEMP);
3483                         break;
3484                 }
3485                 PF_RULES_WLOCK();
3486                 for (i = 0, ioe = ioes; i < io->size; i++, ioe++) {
3487                         switch (ioe->rs_num) {
3488 #ifdef ALTQ
3489                         case PF_RULESET_ALTQ:
3490                                 if (ioe->anchor[0]) {
3491                                         PF_RULES_WUNLOCK();
3492                                         free(ioes, M_TEMP);
3493                                         error = EINVAL;
3494                                         goto fail;
3495                                 }
3496                                 if ((error = pf_begin_altq(&ioe->ticket))) {
3497                                         PF_RULES_WUNLOCK();
3498                                         free(ioes, M_TEMP);
3499                                         goto fail;
3500                                 }
3501                                 break;
3502 #endif /* ALTQ */
3503                         case PF_RULESET_TABLE:
3504                             {
3505                                 struct pfr_table table;
3506
3507                                 bzero(&table, sizeof(table));
3508                                 strlcpy(table.pfrt_anchor, ioe->anchor,
3509                                     sizeof(table.pfrt_anchor));
3510                                 if ((error = pfr_ina_begin(&table,
3511                                     &ioe->ticket, NULL, 0))) {
3512                                         PF_RULES_WUNLOCK();
3513                                         free(ioes, M_TEMP);
3514                                         goto fail;
3515                                 }
3516                                 break;
3517                             }
3518                         default:
3519                                 if ((error = pf_begin_rules(&ioe->ticket,
3520                                     ioe->rs_num, ioe->anchor))) {
3521                                         PF_RULES_WUNLOCK();
3522                                         free(ioes, M_TEMP);
3523                                         goto fail;
3524                                 }
3525                                 break;
3526                         }
3527                 }
3528                 PF_RULES_WUNLOCK();
3529                 error = copyout(ioes, io->array, totlen);
3530                 free(ioes, M_TEMP);
3531                 break;
3532         }
3533
3534         case DIOCXROLLBACK: {
3535                 struct pfioc_trans      *io = (struct pfioc_trans *)addr;
3536                 struct pfioc_trans_e    *ioe, *ioes;
3537                 size_t                   totlen;
3538                 int                      i;
3539
3540                 if (io->esize != sizeof(*ioe)) {
3541                         error = ENODEV;
3542                         break;
3543                 }
3544                 if (io->size < 0 ||
3545                     io->size > pf_ioctl_maxcount ||
3546                     WOULD_OVERFLOW(io->size, sizeof(struct pfioc_trans_e))) {
3547                         error = EINVAL;
3548                         break;
3549                 }
3550                 totlen = sizeof(struct pfioc_trans_e) * io->size;
3551                 ioes = mallocarray(io->size, sizeof(struct pfioc_trans_e),
3552                     M_TEMP, M_NOWAIT);
3553                 if (! ioes) {
3554                         error = ENOMEM;
3555                         break;
3556                 }
3557                 error = copyin(io->array, ioes, totlen);
3558                 if (error) {
3559                         free(ioes, M_TEMP);
3560                         break;
3561                 }
3562                 PF_RULES_WLOCK();
3563                 for (i = 0, ioe = ioes; i < io->size; i++, ioe++) {
3564                         switch (ioe->rs_num) {
3565 #ifdef ALTQ
3566                         case PF_RULESET_ALTQ:
3567                                 if (ioe->anchor[0]) {
3568                                         PF_RULES_WUNLOCK();
3569                                         free(ioes, M_TEMP);
3570                                         error = EINVAL;
3571                                         goto fail;
3572                                 }
3573                                 if ((error = pf_rollback_altq(ioe->ticket))) {
3574                                         PF_RULES_WUNLOCK();
3575                                         free(ioes, M_TEMP);
3576                                         goto fail; /* really bad */
3577                                 }
3578                                 break;
3579 #endif /* ALTQ */
3580                         case PF_RULESET_TABLE:
3581                             {
3582                                 struct pfr_table table;
3583
3584                                 bzero(&table, sizeof(table));
3585                                 strlcpy(table.pfrt_anchor, ioe->anchor,
3586                                     sizeof(table.pfrt_anchor));
3587                                 if ((error = pfr_ina_rollback(&table,
3588                                     ioe->ticket, NULL, 0))) {
3589                                         PF_RULES_WUNLOCK();
3590                                         free(ioes, M_TEMP);
3591                                         goto fail; /* really bad */
3592                                 }
3593                                 break;
3594                             }
3595                         default:
3596                                 if ((error = pf_rollback_rules(ioe->ticket,
3597                                     ioe->rs_num, ioe->anchor))) {
3598                                         PF_RULES_WUNLOCK();
3599                                         free(ioes, M_TEMP);
3600                                         goto fail; /* really bad */
3601                                 }
3602                                 break;
3603                         }
3604                 }
3605                 PF_RULES_WUNLOCK();
3606                 free(ioes, M_TEMP);
3607                 break;
3608         }
3609
3610         case DIOCXCOMMIT: {
3611                 struct pfioc_trans      *io = (struct pfioc_trans *)addr;
3612                 struct pfioc_trans_e    *ioe, *ioes;
3613                 struct pf_ruleset       *rs;
3614                 size_t                   totlen;
3615                 int                      i;
3616
3617                 if (io->esize != sizeof(*ioe)) {
3618                         error = ENODEV;
3619                         break;
3620                 }
3621
3622                 if (io->size < 0 ||
3623                     io->size > pf_ioctl_maxcount ||
3624                     WOULD_OVERFLOW(io->size, sizeof(struct pfioc_trans_e))) {
3625                         error = EINVAL;
3626                         break;
3627                 }
3628
3629                 totlen = sizeof(struct pfioc_trans_e) * io->size;
3630                 ioes = mallocarray(io->size, sizeof(struct pfioc_trans_e),
3631                     M_TEMP, M_NOWAIT);
3632                 if (ioes == NULL) {
3633                         error = ENOMEM;
3634                         break;
3635                 }
3636                 error = copyin(io->array, ioes, totlen);
3637                 if (error) {
3638                         free(ioes, M_TEMP);
3639                         break;
3640                 }
3641                 PF_RULES_WLOCK();
3642                 /* First makes sure everything will succeed. */
3643                 for (i = 0, ioe = ioes; i < io->size; i++, ioe++) {
3644                         switch (ioe->rs_num) {
3645 #ifdef ALTQ
3646                         case PF_RULESET_ALTQ:
3647                                 if (ioe->anchor[0]) {
3648                                         PF_RULES_WUNLOCK();
3649                                         free(ioes, M_TEMP);
3650                                         error = EINVAL;
3651                                         goto fail;
3652                                 }
3653                                 if (!V_altqs_inactive_open || ioe->ticket !=
3654                                     V_ticket_altqs_inactive) {
3655                                         PF_RULES_WUNLOCK();
3656                                         free(ioes, M_TEMP);
3657                                         error = EBUSY;
3658                                         goto fail;
3659                                 }
3660                                 break;
3661 #endif /* ALTQ */
3662                         case PF_RULESET_TABLE:
3663                                 rs = pf_find_ruleset(ioe->anchor);
3664                                 if (rs == NULL || !rs->topen || ioe->ticket !=
3665                                     rs->tticket) {
3666                                         PF_RULES_WUNLOCK();
3667                                         free(ioes, M_TEMP);
3668                                         error = EBUSY;
3669                                         goto fail;
3670                                 }
3671                                 break;
3672                         default:
3673                                 if (ioe->rs_num < 0 || ioe->rs_num >=
3674                                     PF_RULESET_MAX) {
3675                                         PF_RULES_WUNLOCK();
3676                                         free(ioes, M_TEMP);
3677                                         error = EINVAL;
3678                                         goto fail;
3679                                 }
3680                                 rs = pf_find_ruleset(ioe->anchor);
3681                                 if (rs == NULL ||
3682                                     !rs->rules[ioe->rs_num].inactive.open ||
3683                                     rs->rules[ioe->rs_num].inactive.ticket !=
3684                                     ioe->ticket) {
3685                                         PF_RULES_WUNLOCK();
3686                                         free(ioes, M_TEMP);
3687                                         error = EBUSY;
3688                                         goto fail;
3689                                 }
3690                                 break;
3691                         }
3692                 }
3693                 /* Now do the commit - no errors should happen here. */
3694                 for (i = 0, ioe = ioes; i < io->size; i++, ioe++) {
3695                         switch (ioe->rs_num) {
3696 #ifdef ALTQ
3697                         case PF_RULESET_ALTQ:
3698                                 if ((error = pf_commit_altq(ioe->ticket))) {
3699                                         PF_RULES_WUNLOCK();
3700                                         free(ioes, M_TEMP);
3701                                         goto fail; /* really bad */
3702                                 }
3703                                 break;
3704 #endif /* ALTQ */
3705                         case PF_RULESET_TABLE:
3706                             {
3707                                 struct pfr_table table;
3708
3709                                 bzero(&table, sizeof(table));
3710                                 strlcpy(table.pfrt_anchor, ioe->anchor,
3711                                     sizeof(table.pfrt_anchor));
3712                                 if ((error = pfr_ina_commit(&table,
3713                                     ioe->ticket, NULL, NULL, 0))) {
3714                                         PF_RULES_WUNLOCK();
3715                                         free(ioes, M_TEMP);
3716                                         goto fail; /* really bad */
3717                                 }
3718                                 break;
3719                             }
3720                         default:
3721                                 if ((error = pf_commit_rules(ioe->ticket,
3722                                     ioe->rs_num, ioe->anchor))) {
3723                                         PF_RULES_WUNLOCK();
3724                                         free(ioes, M_TEMP);
3725                                         goto fail; /* really bad */
3726                                 }
3727                                 break;
3728                         }
3729                 }
3730                 PF_RULES_WUNLOCK();
3731                 free(ioes, M_TEMP);
3732                 break;
3733         }
3734
3735         case DIOCGETSRCNODES: {
3736                 struct pfioc_src_nodes  *psn = (struct pfioc_src_nodes *)addr;
3737                 struct pf_srchash       *sh;
3738                 struct pf_src_node      *n, *p, *pstore;
3739                 uint32_t                 i, nr = 0;
3740
3741                 for (i = 0, sh = V_pf_srchash; i <= pf_srchashmask;
3742                                 i++, sh++) {
3743                         PF_HASHROW_LOCK(sh);
3744                         LIST_FOREACH(n, &sh->nodes, entry)
3745                                 nr++;
3746                         PF_HASHROW_UNLOCK(sh);
3747                 }
3748
3749                 psn->psn_len = min(psn->psn_len,
3750                     sizeof(struct pf_src_node) * nr);
3751
3752                 if (psn->psn_len == 0) {
3753                         psn->psn_len = sizeof(struct pf_src_node) * nr;
3754                         break;
3755                 }
3756
3757                 nr = 0;
3758
3759                 p = pstore = malloc(psn->psn_len, M_TEMP, M_WAITOK);
3760                 for (i = 0, sh = V_pf_srchash; i <= pf_srchashmask;
3761                     i++, sh++) {
3762                     PF_HASHROW_LOCK(sh);
3763                     LIST_FOREACH(n, &sh->nodes, entry) {
3764                         int     secs = time_uptime, diff;
3765
3766                         if ((nr + 1) * sizeof(*p) > (unsigned)psn->psn_len)
3767                                 break;
3768
3769                         bcopy(n, p, sizeof(struct pf_src_node));
3770                         if (n->rule.ptr != NULL)
3771                                 p->rule.nr = n->rule.ptr->nr;
3772                         p->creation = secs - p->creation;
3773                         if (p->expire > secs)
3774                                 p->expire -= secs;
3775                         else
3776                                 p->expire = 0;
3777
3778                         /* Adjust the connection rate estimate. */
3779                         diff = secs - n->conn_rate.last;
3780                         if (diff >= n->conn_rate.seconds)
3781                                 p->conn_rate.count = 0;
3782                         else
3783                                 p->conn_rate.count -=
3784                                     n->conn_rate.count * diff /
3785                                     n->conn_rate.seconds;
3786                         p++;
3787                         nr++;
3788                     }
3789                     PF_HASHROW_UNLOCK(sh);
3790                 }
3791                 error = copyout(pstore, psn->psn_src_nodes,
3792                     sizeof(struct pf_src_node) * nr);
3793                 if (error) {
3794                         free(pstore, M_TEMP);
3795                         break;
3796                 }
3797                 psn->psn_len = sizeof(struct pf_src_node) * nr;
3798                 free(pstore, M_TEMP);
3799                 break;
3800         }
3801
3802         case DIOCCLRSRCNODES: {
3803
3804                 pf_clear_srcnodes(NULL);
3805                 pf_purge_expired_src_nodes();
3806                 break;
3807         }
3808
3809         case DIOCKILLSRCNODES:
3810                 pf_kill_srcnodes((struct pfioc_src_node_kill *)addr);
3811                 break;
3812
3813         case DIOCSETHOSTID: {
3814                 u_int32_t       *hostid = (u_int32_t *)addr;
3815
3816                 PF_RULES_WLOCK();
3817                 if (*hostid == 0)
3818                         V_pf_status.hostid = arc4random();
3819                 else
3820                         V_pf_status.hostid = *hostid;
3821                 PF_RULES_WUNLOCK();
3822                 break;
3823         }
3824
3825         case DIOCOSFPFLUSH:
3826                 PF_RULES_WLOCK();
3827                 pf_osfp_flush();
3828                 PF_RULES_WUNLOCK();
3829                 break;
3830
3831         case DIOCIGETIFACES: {
3832                 struct pfioc_iface *io = (struct pfioc_iface *)addr;
3833                 struct pfi_kif *ifstore;
3834                 size_t bufsiz;
3835
3836                 if (io->pfiio_esize != sizeof(struct pfi_kif)) {
3837                         error = ENODEV;
3838                         break;
3839                 }
3840
3841                 if (io->pfiio_size < 0 ||
3842                     io->pfiio_size > pf_ioctl_maxcount ||
3843                     WOULD_OVERFLOW(io->pfiio_size, sizeof(struct pfi_kif))) {
3844                         error = EINVAL;
3845                         break;
3846                 }
3847
3848                 bufsiz = io->pfiio_size * sizeof(struct pfi_kif);
3849                 ifstore = mallocarray(io->pfiio_size, sizeof(struct pfi_kif),
3850                     M_TEMP, M_NOWAIT);
3851                 if (ifstore == NULL) {
3852                         error = ENOMEM;
3853                         break;
3854                 }
3855
3856                 PF_RULES_RLOCK();
3857                 pfi_get_ifaces(io->pfiio_name, ifstore, &io->pfiio_size);
3858                 PF_RULES_RUNLOCK();
3859                 error = copyout(ifstore, io->pfiio_buffer, bufsiz);
3860                 free(ifstore, M_TEMP);
3861                 break;
3862         }
3863
3864         case DIOCSETIFFLAG: {
3865                 struct pfioc_iface *io = (struct pfioc_iface *)addr;
3866
3867                 PF_RULES_WLOCK();
3868                 error = pfi_set_flags(io->pfiio_name, io->pfiio_flags);
3869                 PF_RULES_WUNLOCK();
3870                 break;
3871         }
3872
3873         case DIOCCLRIFFLAG: {
3874                 struct pfioc_iface *io = (struct pfioc_iface *)addr;
3875
3876                 PF_RULES_WLOCK();
3877                 error = pfi_clear_flags(io->pfiio_name, io->pfiio_flags);
3878                 PF_RULES_WUNLOCK();
3879                 break;
3880         }
3881
3882         default:
3883                 error = ENODEV;
3884                 break;
3885         }
3886 fail:
3887         if (sx_xlocked(&pf_ioctl_lock))
3888                 sx_xunlock(&pf_ioctl_lock);
3889         CURVNET_RESTORE();
3890
3891         return (error);
3892 }
3893
3894 void
3895 pfsync_state_export(struct pfsync_state *sp, struct pf_state *st)
3896 {
3897         bzero(sp, sizeof(struct pfsync_state));
3898
3899         /* copy from state key */
3900         sp->key[PF_SK_WIRE].addr[0] = st->key[PF_SK_WIRE]->addr[0];
3901         sp->key[PF_SK_WIRE].addr[1] = st->key[PF_SK_WIRE]->addr[1];
3902         sp->key[PF_SK_WIRE].port[0] = st->key[PF_SK_WIRE]->port[0];
3903         sp->key[PF_SK_WIRE].port[1] = st->key[PF_SK_WIRE]->port[1];
3904         sp->key[PF_SK_STACK].addr[0] = st->key[PF_SK_STACK]->addr[0];
3905         sp->key[PF_SK_STACK].addr[1] = st->key[PF_SK_STACK]->addr[1];
3906         sp->key[PF_SK_STACK].port[0] = st->key[PF_SK_STACK]->port[0];
3907         sp->key[PF_SK_STACK].port[1] = st->key[PF_SK_STACK]->port[1];
3908         sp->proto = st->key[PF_SK_WIRE]->proto;
3909         sp->af = st->key[PF_SK_WIRE]->af;
3910
3911         /* copy from state */
3912         strlcpy(sp->ifname, st->kif->pfik_name, sizeof(sp->ifname));
3913         bcopy(&st->rt_addr, &sp->rt_addr, sizeof(sp->rt_addr));
3914         sp->creation = htonl(time_uptime - st->creation);
3915         sp->expire = pf_state_expires(st);
3916         if (sp->expire <= time_uptime)
3917                 sp->expire = htonl(0);
3918         else
3919                 sp->expire = htonl(sp->expire - time_uptime);
3920
3921         sp->direction = st->direction;
3922         sp->log = st->log;
3923         sp->timeout = st->timeout;
3924         sp->state_flags = st->state_flags;
3925         if (st->src_node)
3926                 sp->sync_flags |= PFSYNC_FLAG_SRCNODE;
3927         if (st->nat_src_node)
3928                 sp->sync_flags |= PFSYNC_FLAG_NATSRCNODE;
3929
3930         sp->id = st->id;
3931         sp->creatorid = st->creatorid;
3932         pf_state_peer_hton(&st->src, &sp->src);
3933         pf_state_peer_hton(&st->dst, &sp->dst);
3934
3935         if (st->rule.ptr == NULL)
3936                 sp->rule = htonl(-1);
3937         else
3938                 sp->rule = htonl(st->rule.ptr->nr);
3939         if (st->anchor.ptr == NULL)
3940                 sp->anchor = htonl(-1);
3941         else
3942                 sp->anchor = htonl(st->anchor.ptr->nr);
3943         if (st->nat_rule.ptr == NULL)
3944                 sp->nat_rule = htonl(-1);
3945         else
3946                 sp->nat_rule = htonl(st->nat_rule.ptr->nr);
3947
3948         pf_state_counter_hton(st->packets[0], sp->packets[0]);
3949         pf_state_counter_hton(st->packets[1], sp->packets[1]);
3950         pf_state_counter_hton(st->bytes[0], sp->bytes[0]);
3951         pf_state_counter_hton(st->bytes[1], sp->bytes[1]);
3952
3953 }
3954
3955 static void
3956 pf_tbladdr_copyout(struct pf_addr_wrap *aw)
3957 {
3958         struct pfr_ktable *kt;
3959
3960         KASSERT(aw->type == PF_ADDR_TABLE, ("%s: type %u", __func__, aw->type));
3961
3962         kt = aw->p.tbl;
3963         if (!(kt->pfrkt_flags & PFR_TFLAG_ACTIVE) && kt->pfrkt_root != NULL)
3964                 kt = kt->pfrkt_root;
3965         aw->p.tbl = NULL;
3966         aw->p.tblcnt = (kt->pfrkt_flags & PFR_TFLAG_ACTIVE) ?
3967                 kt->pfrkt_cnt : -1;
3968 }
3969
3970 /*
3971  * XXX - Check for version missmatch!!!
3972  */
3973 static void
3974 pf_clear_states(void)
3975 {
3976         struct pf_state *s;
3977         u_int i;
3978
3979         for (i = 0; i <= pf_hashmask; i++) {
3980                 struct pf_idhash *ih = &V_pf_idhash[i];
3981 relock:
3982                 PF_HASHROW_LOCK(ih);
3983                 LIST_FOREACH(s, &ih->states, entry) {
3984                         s->timeout = PFTM_PURGE;
3985                         /* Don't send out individual delete messages. */
3986                         s->state_flags |= PFSTATE_NOSYNC;
3987                         pf_unlink_state(s, PF_ENTER_LOCKED);
3988                         goto relock;
3989                 }
3990                 PF_HASHROW_UNLOCK(ih);
3991         }
3992 }
3993
3994 static int
3995 pf_clear_tables(void)
3996 {
3997         struct pfioc_table io;
3998         int error;
3999
4000         bzero(&io, sizeof(io));
4001
4002         error = pfr_clr_tables(&io.pfrio_table, &io.pfrio_ndel,
4003             io.pfrio_flags);
4004
4005         return (error);
4006 }
4007
4008 static void
4009 pf_clear_srcnodes(struct pf_src_node *n)
4010 {
4011         struct pf_state *s;
4012         int i;
4013
4014         for (i = 0; i <= pf_hashmask; i++) {
4015                 struct pf_idhash *ih = &V_pf_idhash[i];
4016
4017                 PF_HASHROW_LOCK(ih);
4018                 LIST_FOREACH(s, &ih->states, entry) {
4019                         if (n == NULL || n == s->src_node)
4020                                 s->src_node = NULL;
4021                         if (n == NULL || n == s->nat_src_node)
4022                                 s->nat_src_node = NULL;
4023                 }
4024                 PF_HASHROW_UNLOCK(ih);
4025         }
4026
4027         if (n == NULL) {
4028                 struct pf_srchash *sh;
4029
4030                 for (i = 0, sh = V_pf_srchash; i <= pf_srchashmask;
4031                     i++, sh++) {
4032                         PF_HASHROW_LOCK(sh);
4033                         LIST_FOREACH(n, &sh->nodes, entry) {
4034                                 n->expire = 1;
4035                                 n->states = 0;
4036                         }
4037                         PF_HASHROW_UNLOCK(sh);
4038                 }
4039         } else {
4040                 /* XXX: hash slot should already be locked here. */
4041                 n->expire = 1;
4042                 n->states = 0;
4043         }
4044 }
4045
4046 static void
4047 pf_kill_srcnodes(struct pfioc_src_node_kill *psnk)
4048 {
4049         struct pf_src_node_list  kill;
4050
4051         LIST_INIT(&kill);
4052         for (int i = 0; i <= pf_srchashmask; i++) {
4053                 struct pf_srchash *sh = &V_pf_srchash[i];
4054                 struct pf_src_node *sn, *tmp;
4055
4056                 PF_HASHROW_LOCK(sh);
4057                 LIST_FOREACH_SAFE(sn, &sh->nodes, entry, tmp)
4058                         if (PF_MATCHA(psnk->psnk_src.neg,
4059                               &psnk->psnk_src.addr.v.a.addr,
4060                               &psnk->psnk_src.addr.v.a.mask,
4061                               &sn->addr, sn->af) &&
4062                             PF_MATCHA(psnk->psnk_dst.neg,
4063                               &psnk->psnk_dst.addr.v.a.addr,
4064                               &psnk->psnk_dst.addr.v.a.mask,
4065                               &sn->raddr, sn->af)) {
4066                                 pf_unlink_src_node(sn);
4067                                 LIST_INSERT_HEAD(&kill, sn, entry);
4068                                 sn->expire = 1;
4069                         }
4070                 PF_HASHROW_UNLOCK(sh);
4071         }
4072
4073         for (int i = 0; i <= pf_hashmask; i++) {
4074                 struct pf_idhash *ih = &V_pf_idhash[i];
4075                 struct pf_state *s;
4076
4077                 PF_HASHROW_LOCK(ih);
4078                 LIST_FOREACH(s, &ih->states, entry) {
4079                         if (s->src_node && s->src_node->expire == 1)
4080                                 s->src_node = NULL;
4081                         if (s->nat_src_node && s->nat_src_node->expire == 1)
4082                                 s->nat_src_node = NULL;
4083                 }
4084                 PF_HASHROW_UNLOCK(ih);
4085         }
4086
4087         psnk->psnk_killed = pf_free_src_nodes(&kill);
4088 }
4089
4090 /*
4091  * XXX - Check for version missmatch!!!
4092  */
4093
4094 /*
4095  * Duplicate pfctl -Fa operation to get rid of as much as we can.
4096  */
4097 static int
4098 shutdown_pf(void)
4099 {
4100         int error = 0;
4101         u_int32_t t[5];
4102         char nn = '\0';
4103
4104         do {
4105                 if ((error = pf_begin_rules(&t[0], PF_RULESET_SCRUB, &nn))
4106                     != 0) {
4107                         DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: SCRUB\n"));
4108                         break;
4109                 }
4110                 if ((error = pf_begin_rules(&t[1], PF_RULESET_FILTER, &nn))
4111                     != 0) {
4112                         DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: FILTER\n"));
4113                         break;          /* XXX: rollback? */
4114                 }
4115                 if ((error = pf_begin_rules(&t[2], PF_RULESET_NAT, &nn))
4116                     != 0) {
4117                         DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: NAT\n"));
4118                         break;          /* XXX: rollback? */
4119                 }
4120                 if ((error = pf_begin_rules(&t[3], PF_RULESET_BINAT, &nn))
4121                     != 0) {
4122                         DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: BINAT\n"));
4123                         break;          /* XXX: rollback? */
4124                 }
4125                 if ((error = pf_begin_rules(&t[4], PF_RULESET_RDR, &nn))
4126                     != 0) {
4127                         DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: RDR\n"));
4128                         break;          /* XXX: rollback? */
4129                 }
4130
4131                 /* XXX: these should always succeed here */
4132                 pf_commit_rules(t[0], PF_RULESET_SCRUB, &nn);
4133                 pf_commit_rules(t[1], PF_RULESET_FILTER, &nn);
4134                 pf_commit_rules(t[2], PF_RULESET_NAT, &nn);
4135                 pf_commit_rules(t[3], PF_RULESET_BINAT, &nn);
4136                 pf_commit_rules(t[4], PF_RULESET_RDR, &nn);
4137
4138                 if ((error = pf_clear_tables()) != 0)
4139                         break;
4140
4141 #ifdef ALTQ
4142                 if ((error = pf_begin_altq(&t[0])) != 0) {
4143                         DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: ALTQ\n"));
4144                         break;
4145                 }
4146                 pf_commit_altq(t[0]);
4147 #endif
4148
4149                 pf_clear_states();
4150
4151                 pf_clear_srcnodes(NULL);
4152
4153                 /* status does not use malloced mem so no need to cleanup */
4154                 /* fingerprints and interfaces have their own cleanup code */
4155         } while(0);
4156
4157         return (error);
4158 }
4159
4160 static pfil_return_t
4161 pf_check_return(int chk, struct mbuf **m)
4162 {
4163
4164         switch (chk) {
4165         case PF_PASS:
4166                 if (*m == NULL)
4167                         return (PFIL_CONSUMED);
4168                 else
4169                         return (PFIL_PASS);
4170                 break;
4171         default:
4172                 if (*m != NULL) {
4173                         m_freem(*m);
4174                         *m = NULL;
4175                 }
4176                 return (PFIL_DROPPED);
4177         }
4178 }
4179
4180 #ifdef INET
4181 static pfil_return_t
4182 pf_check_in(struct mbuf **m, struct ifnet *ifp, int flags,
4183     void *ruleset __unused, struct inpcb *inp)
4184 {
4185         int chk;
4186
4187         chk = pf_test(PF_IN, flags, ifp, m, inp);
4188
4189         return (pf_check_return(chk, m));
4190 }
4191
4192 static pfil_return_t
4193 pf_check_out(struct mbuf **m, struct ifnet *ifp, int flags,
4194     void *ruleset __unused,  struct inpcb *inp)
4195 {
4196         int chk;
4197
4198         chk = pf_test(PF_OUT, flags, ifp, m, inp);
4199
4200         return (pf_check_return(chk, m));
4201 }
4202 #endif
4203
4204 #ifdef INET6
4205 static pfil_return_t
4206 pf_check6_in(struct mbuf **m, struct ifnet *ifp, int flags,
4207     void *ruleset __unused,  struct inpcb *inp)
4208 {
4209         int chk;
4210
4211         /*
4212          * In case of loopback traffic IPv6 uses the real interface in
4213          * order to support scoped addresses. In order to support stateful
4214          * filtering we have change this to lo0 as it is the case in IPv4.
4215          */
4216         CURVNET_SET(ifp->if_vnet);
4217         chk = pf_test6(PF_IN, flags, (*m)->m_flags & M_LOOP ? V_loif : ifp, m, inp);
4218         CURVNET_RESTORE();
4219
4220         return (pf_check_return(chk, m));
4221 }
4222
4223 static pfil_return_t
4224 pf_check6_out(struct mbuf **m, struct ifnet *ifp, int flags,
4225     void *ruleset __unused,  struct inpcb *inp)
4226 {
4227         int chk;
4228
4229         CURVNET_SET(ifp->if_vnet);
4230         chk = pf_test6(PF_OUT, flags, ifp, m, inp);
4231         CURVNET_RESTORE();
4232
4233         return (pf_check_return(chk, m));
4234 }
4235 #endif /* INET6 */
4236
4237 #ifdef INET
4238 VNET_DEFINE_STATIC(pfil_hook_t, pf_ip4_in_hook);
4239 VNET_DEFINE_STATIC(pfil_hook_t, pf_ip4_out_hook);
4240 #define V_pf_ip4_in_hook        VNET(pf_ip4_in_hook)
4241 #define V_pf_ip4_out_hook       VNET(pf_ip4_out_hook)
4242 #endif
4243 #ifdef INET6
4244 VNET_DEFINE_STATIC(pfil_hook_t, pf_ip6_in_hook);
4245 VNET_DEFINE_STATIC(pfil_hook_t, pf_ip6_out_hook);
4246 #define V_pf_ip6_in_hook        VNET(pf_ip6_in_hook)
4247 #define V_pf_ip6_out_hook       VNET(pf_ip6_out_hook)
4248 #endif
4249
4250 static int
4251 hook_pf(void)
4252 {
4253         struct pfil_hook_args pha;
4254         struct pfil_link_args pla;
4255
4256         if (V_pf_pfil_hooked)
4257                 return (0);
4258
4259         pha.pa_version = PFIL_VERSION;
4260         pha.pa_modname = "pf";
4261         pha.pa_ruleset = NULL;
4262
4263         pla.pa_version = PFIL_VERSION;
4264
4265 #ifdef INET
4266         pha.pa_type = PFIL_TYPE_IP4;
4267         pha.pa_func = pf_check_in;
4268         pha.pa_flags = PFIL_IN;
4269         pha.pa_rulname = "default-in";
4270         V_pf_ip4_in_hook = pfil_add_hook(&pha);
4271         pla.pa_flags = PFIL_IN | PFIL_HEADPTR | PFIL_HOOKPTR;
4272         pla.pa_head = V_inet_pfil_head;
4273         pla.pa_hook = V_pf_ip4_in_hook;
4274         (void)pfil_link(&pla);
4275         pha.pa_func = pf_check_out;
4276         pha.pa_flags = PFIL_OUT;
4277         pha.pa_rulname = "default-out";
4278         V_pf_ip4_out_hook = pfil_add_hook(&pha);
4279         pla.pa_flags = PFIL_OUT | PFIL_HEADPTR | PFIL_HOOKPTR;
4280         pla.pa_head = V_inet_pfil_head;
4281         pla.pa_hook = V_pf_ip4_out_hook;
4282         (void)pfil_link(&pla);
4283 #endif
4284 #ifdef INET6
4285         pha.pa_type = PFIL_TYPE_IP6;
4286         pha.pa_func = pf_check6_in;
4287         pha.pa_flags = PFIL_IN;
4288         pha.pa_rulname = "default-in6";
4289         V_pf_ip6_in_hook = pfil_add_hook(&pha);
4290         pla.pa_flags = PFIL_IN | PFIL_HEADPTR | PFIL_HOOKPTR;
4291         pla.pa_head = V_inet6_pfil_head;
4292         pla.pa_hook = V_pf_ip6_in_hook;
4293         (void)pfil_link(&pla);
4294         pha.pa_func = pf_check6_out;
4295         pha.pa_rulname = "default-out6";
4296         pha.pa_flags = PFIL_OUT;
4297         V_pf_ip6_out_hook = pfil_add_hook(&pha);
4298         pla.pa_flags = PFIL_OUT | PFIL_HEADPTR | PFIL_HOOKPTR;
4299         pla.pa_head = V_inet6_pfil_head;
4300         pla.pa_hook = V_pf_ip6_out_hook;
4301         (void)pfil_link(&pla);
4302 #endif
4303
4304         V_pf_pfil_hooked = 1;
4305         return (0);
4306 }
4307
4308 static int
4309 dehook_pf(void)
4310 {
4311
4312         if (V_pf_pfil_hooked == 0)
4313                 return (0);
4314
4315 #ifdef INET
4316         pfil_remove_hook(V_pf_ip4_in_hook);
4317         pfil_remove_hook(V_pf_ip4_out_hook);
4318 #endif
4319 #ifdef INET6
4320         pfil_remove_hook(V_pf_ip6_in_hook);
4321         pfil_remove_hook(V_pf_ip6_out_hook);
4322 #endif
4323
4324         V_pf_pfil_hooked = 0;
4325         return (0);
4326 }
4327
4328 static void
4329 pf_load_vnet(void)
4330 {
4331         V_pf_tag_z = uma_zcreate("pf tags", sizeof(struct pf_tagname),
4332             NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
4333
4334         pf_init_tagset(&V_pf_tags, &pf_rule_tag_hashsize,
4335             PF_RULE_TAG_HASH_SIZE_DEFAULT);
4336 #ifdef ALTQ
4337         pf_init_tagset(&V_pf_qids, &pf_queue_tag_hashsize,
4338             PF_QUEUE_TAG_HASH_SIZE_DEFAULT);
4339 #endif
4340
4341         pfattach_vnet();
4342         V_pf_vnet_active = 1;
4343 }
4344
4345 static int
4346 pf_load(void)
4347 {
4348         int error;
4349
4350         rm_init(&pf_rules_lock, "pf rulesets");
4351         sx_init(&pf_ioctl_lock, "pf ioctl");
4352         sx_init(&pf_end_lock, "pf end thread");
4353
4354         pf_mtag_initialize();
4355
4356         pf_dev = make_dev(&pf_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, PF_NAME);
4357         if (pf_dev == NULL)
4358                 return (ENOMEM);
4359
4360         pf_end_threads = 0;
4361         error = kproc_create(pf_purge_thread, NULL, &pf_purge_proc, 0, 0, "pf purge");
4362         if (error != 0)
4363                 return (error);
4364
4365         pfi_initialize();
4366
4367         return (0);
4368 }
4369
4370 static void
4371 pf_unload_vnet(void)
4372 {
4373         int error;
4374
4375         V_pf_vnet_active = 0;
4376         V_pf_status.running = 0;
4377         error = dehook_pf();
4378         if (error) {
4379                 /*
4380                  * Should not happen!
4381                  * XXX Due to error code ESRCH, kldunload will show
4382                  * a message like 'No such process'.
4383                  */
4384                 printf("%s : pfil unregisteration fail\n", __FUNCTION__);
4385                 return;
4386         }
4387
4388         PF_RULES_WLOCK();
4389         shutdown_pf();
4390         PF_RULES_WUNLOCK();
4391
4392         swi_remove(V_pf_swi_cookie);
4393
4394         pf_unload_vnet_purge();
4395
4396         pf_normalize_cleanup();
4397         PF_RULES_WLOCK();
4398         pfi_cleanup_vnet();
4399         PF_RULES_WUNLOCK();
4400         pfr_cleanup();
4401         pf_osfp_flush();
4402         pf_cleanup();
4403         if (IS_DEFAULT_VNET(curvnet))
4404                 pf_mtag_cleanup();
4405
4406         pf_cleanup_tagset(&V_pf_tags);
4407 #ifdef ALTQ
4408         pf_cleanup_tagset(&V_pf_qids);
4409 #endif
4410         uma_zdestroy(V_pf_tag_z);
4411
4412         /* Free counters last as we updated them during shutdown. */
4413         counter_u64_free(V_pf_default_rule.states_cur);
4414         counter_u64_free(V_pf_default_rule.states_tot);
4415         counter_u64_free(V_pf_default_rule.src_nodes);
4416
4417         for (int i = 0; i < PFRES_MAX; i++)
4418                 counter_u64_free(V_pf_status.counters[i]);
4419         for (int i = 0; i < LCNT_MAX; i++)
4420                 counter_u64_free(V_pf_status.lcounters[i]);
4421         for (int i = 0; i < FCNT_MAX; i++)
4422                 counter_u64_free(V_pf_status.fcounters[i]);
4423         for (int i = 0; i < SCNT_MAX; i++)
4424                 counter_u64_free(V_pf_status.scounters[i]);
4425 }
4426
4427 static void
4428 pf_unload(void)
4429 {
4430
4431         sx_xlock(&pf_end_lock);
4432         pf_end_threads = 1;
4433         while (pf_end_threads < 2) {
4434                 wakeup_one(pf_purge_thread);
4435                 sx_sleep(pf_purge_proc, &pf_end_lock, 0, "pftmo", 0);
4436         }
4437         sx_xunlock(&pf_end_lock);
4438
4439         if (pf_dev != NULL)
4440                 destroy_dev(pf_dev);
4441
4442         pfi_cleanup();
4443
4444         rm_destroy(&pf_rules_lock);
4445         sx_destroy(&pf_ioctl_lock);
4446         sx_destroy(&pf_end_lock);
4447 }
4448
4449 static void
4450 vnet_pf_init(void *unused __unused)
4451 {
4452
4453         pf_load_vnet();
4454 }
4455 VNET_SYSINIT(vnet_pf_init, SI_SUB_PROTO_FIREWALL, SI_ORDER_THIRD,
4456     vnet_pf_init, NULL);
4457
4458 static void
4459 vnet_pf_uninit(const void *unused __unused)
4460 {
4461
4462         pf_unload_vnet();
4463 }
4464 SYSUNINIT(pf_unload, SI_SUB_PROTO_FIREWALL, SI_ORDER_SECOND, pf_unload, NULL);
4465 VNET_SYSUNINIT(vnet_pf_uninit, SI_SUB_PROTO_FIREWALL, SI_ORDER_THIRD,
4466     vnet_pf_uninit, NULL);
4467
4468
4469 static int
4470 pf_modevent(module_t mod, int type, void *data)
4471 {
4472         int error = 0;
4473
4474         switch(type) {
4475         case MOD_LOAD:
4476                 error = pf_load();
4477                 break;
4478         case MOD_UNLOAD:
4479                 /* Handled in SYSUNINIT(pf_unload) to ensure it's done after
4480                  * the vnet_pf_uninit()s */
4481                 break;
4482         default:
4483                 error = EINVAL;
4484                 break;
4485         }
4486
4487         return (error);
4488 }
4489
4490 static moduledata_t pf_mod = {
4491         "pf",
4492         pf_modevent,
4493         0
4494 };
4495
4496 DECLARE_MODULE(pf, pf_mod, SI_SUB_PROTO_FIREWALL, SI_ORDER_SECOND);
4497 MODULE_VERSION(pf, PF_MODVER);