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 #include "opt_inet.h" 42 #include "opt_inet6.h" 43 #include "opt_bpf.h" 44 #include "opt_pf.h" 45 46 #include <sys/param.h> 47 #include <sys/_bitset.h> 48 #include <sys/bitset.h> 49 #include <sys/bus.h> 50 #include <sys/conf.h> 51 #include <sys/endian.h> 52 #include <sys/fcntl.h> 53 #include <sys/filio.h> 54 #include <sys/hash.h> 55 #include <sys/interrupt.h> 56 #include <sys/jail.h> 57 #include <sys/kernel.h> 58 #include <sys/kthread.h> 59 #include <sys/lock.h> 60 #include <sys/mbuf.h> 61 #include <sys/module.h> 62 #include <sys/nv.h> 63 #include <sys/proc.h> 64 #include <sys/sdt.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/if_private.h> 74 #include <net/vnet.h> 75 #include <net/route.h> 76 #include <net/pfil.h> 77 #include <net/pfvar.h> 78 #include <net/if_pfsync.h> 79 #include <net/if_pflog.h> 80 81 #include <netinet/in.h> 82 #include <netinet/ip.h> 83 #include <netinet/ip_var.h> 84 #include <netinet6/ip6_var.h> 85 #include <netinet/ip_icmp.h> 86 #include <netpfil/pf/pf_nl.h> 87 #include <netpfil/pf/pf_nv.h> 88 89 #ifdef INET6 90 #include <netinet/ip6.h> 91 #endif /* INET6 */ 92 93 #ifdef ALTQ 94 #include <net/altq/altq.h> 95 #endif 96 97 SDT_PROBE_DEFINE3(pf, ioctl, ioctl, error, "int", "int", "int"); 98 SDT_PROBE_DEFINE3(pf, ioctl, function, error, "char *", "int", "int"); 99 SDT_PROBE_DEFINE2(pf, ioctl, addrule, error, "int", "int"); 100 SDT_PROBE_DEFINE2(pf, ioctl, nvchk, error, "int", "int"); 101 102 static struct pf_kpool *pf_get_kpool(const char *, u_int32_t, u_int8_t, 103 u_int32_t, u_int8_t, u_int8_t, u_int8_t, int); 104 105 static void pf_mv_kpool(struct pf_kpalist *, struct pf_kpalist *); 106 static void pf_empty_kpool(struct pf_kpalist *); 107 static int pfioctl(struct cdev *, u_long, caddr_t, int, 108 struct thread *); 109 static int pf_begin_eth(uint32_t *, const char *); 110 static int pf_rollback_eth(uint32_t, const char *); 111 static int pf_commit_eth(uint32_t, const char *); 112 static void pf_free_eth_rule(struct pf_keth_rule *); 113 #ifdef ALTQ 114 static int pf_begin_altq(u_int32_t *); 115 static int pf_rollback_altq(u_int32_t); 116 static int pf_commit_altq(u_int32_t); 117 static int pf_enable_altq(struct pf_altq *); 118 static int pf_disable_altq(struct pf_altq *); 119 static uint16_t pf_qname2qid(const char *); 120 static void pf_qid_unref(uint16_t); 121 #endif /* ALTQ */ 122 static int pf_begin_rules(u_int32_t *, int, const char *); 123 static int pf_rollback_rules(u_int32_t, int, char *); 124 static int pf_setup_pfsync_matching(struct pf_kruleset *); 125 static void pf_hash_rule_rolling(MD5_CTX *, struct pf_krule *); 126 static void pf_hash_rule(struct pf_krule *); 127 static void pf_hash_rule_addr(MD5_CTX *, struct pf_rule_addr *); 128 static int pf_commit_rules(u_int32_t, int, char *); 129 static int pf_addr_setup(struct pf_kruleset *, 130 struct pf_addr_wrap *, sa_family_t); 131 static void pf_src_node_copy(const struct pf_ksrc_node *, 132 struct pf_src_node *); 133 #ifdef ALTQ 134 static int pf_export_kaltq(struct pf_altq *, 135 struct pfioc_altq_v1 *, size_t); 136 static int pf_import_kaltq(struct pfioc_altq_v1 *, 137 struct pf_altq *, size_t); 138 #endif /* ALTQ */ 139 140 VNET_DEFINE(struct pf_krule, pf_default_rule); 141 142 static __inline int pf_krule_compare(struct pf_krule *, 143 struct pf_krule *); 144 145 RB_GENERATE(pf_krule_global, pf_krule, entry_global, pf_krule_compare); 146 147 #ifdef ALTQ 148 VNET_DEFINE_STATIC(int, pf_altq_running); 149 #define V_pf_altq_running VNET(pf_altq_running) 150 #endif 151 152 #define TAGID_MAX 50000 153 struct pf_tagname { 154 TAILQ_ENTRY(pf_tagname) namehash_entries; 155 TAILQ_ENTRY(pf_tagname) taghash_entries; 156 char name[PF_TAG_NAME_SIZE]; 157 uint16_t tag; 158 int ref; 159 }; 160 161 struct pf_tagset { 162 TAILQ_HEAD(, pf_tagname) *namehash; 163 TAILQ_HEAD(, pf_tagname) *taghash; 164 unsigned int mask; 165 uint32_t seed; 166 BITSET_DEFINE(, TAGID_MAX) avail; 167 }; 168 169 VNET_DEFINE(struct pf_tagset, pf_tags); 170 #define V_pf_tags VNET(pf_tags) 171 static unsigned int pf_rule_tag_hashsize; 172 #define PF_RULE_TAG_HASH_SIZE_DEFAULT 128 173 SYSCTL_UINT(_net_pf, OID_AUTO, rule_tag_hashsize, CTLFLAG_RDTUN, 174 &pf_rule_tag_hashsize, PF_RULE_TAG_HASH_SIZE_DEFAULT, 175 "Size of pf(4) rule tag hashtable"); 176 177 #ifdef ALTQ 178 VNET_DEFINE(struct pf_tagset, pf_qids); 179 #define V_pf_qids VNET(pf_qids) 180 static unsigned int pf_queue_tag_hashsize; 181 #define PF_QUEUE_TAG_HASH_SIZE_DEFAULT 128 182 SYSCTL_UINT(_net_pf, OID_AUTO, queue_tag_hashsize, CTLFLAG_RDTUN, 183 &pf_queue_tag_hashsize, PF_QUEUE_TAG_HASH_SIZE_DEFAULT, 184 "Size of pf(4) queue tag hashtable"); 185 #endif 186 VNET_DEFINE(uma_zone_t, pf_tag_z); 187 #define V_pf_tag_z VNET(pf_tag_z) 188 static MALLOC_DEFINE(M_PFALTQ, "pf_altq", "pf(4) altq configuration db"); 189 static MALLOC_DEFINE(M_PFRULE, "pf_rule", "pf(4) rules"); 190 191 #if (PF_QNAME_SIZE != PF_TAG_NAME_SIZE) 192 #error PF_QNAME_SIZE must be equal to PF_TAG_NAME_SIZE 193 #endif 194 195 VNET_DEFINE_STATIC(bool, pf_filter_local) = false; 196 #define V_pf_filter_local VNET(pf_filter_local) 197 SYSCTL_BOOL(_net_pf, OID_AUTO, filter_local, CTLFLAG_VNET | CTLFLAG_RW, 198 &VNET_NAME(pf_filter_local), false, 199 "Enable filtering for packets delivered to local network stack"); 200 201 #ifdef PF_DEFAULT_TO_DROP 202 VNET_DEFINE_STATIC(bool, default_to_drop) = true; 203 #else 204 VNET_DEFINE_STATIC(bool, default_to_drop); 205 #endif 206 #define V_default_to_drop VNET(default_to_drop) 207 SYSCTL_BOOL(_net_pf, OID_AUTO, default_to_drop, CTLFLAG_RDTUN | CTLFLAG_VNET, 208 &VNET_NAME(default_to_drop), false, 209 "Make the default rule drop all packets."); 210 211 static void pf_init_tagset(struct pf_tagset *, unsigned int *, 212 unsigned int); 213 static void pf_cleanup_tagset(struct pf_tagset *); 214 static uint16_t tagname2hashindex(const struct pf_tagset *, const char *); 215 static uint16_t tag2hashindex(const struct pf_tagset *, uint16_t); 216 static u_int16_t tagname2tag(struct pf_tagset *, const char *); 217 static u_int16_t pf_tagname2tag(const char *); 218 static void tag_unref(struct pf_tagset *, u_int16_t); 219 220 #define DPFPRINTF(n, x) if (V_pf_status.debug >= (n)) printf x 221 222 struct cdev *pf_dev; 223 224 /* 225 * XXX - These are new and need to be checked when moveing to a new version 226 */ 227 static void pf_clear_all_states(void); 228 static int pf_killstates_row(struct pf_kstate_kill *, 229 struct pf_idhash *); 230 static int pf_killstates_nv(struct pfioc_nv *); 231 static int pf_clearstates_nv(struct pfioc_nv *); 232 static int pf_getstate(struct pfioc_nv *); 233 static int pf_getstatus(struct pfioc_nv *); 234 static int pf_clear_tables(void); 235 static void pf_kill_srcnodes(struct pfioc_src_node_kill *); 236 static int pf_keepcounters(struct pfioc_nv *); 237 static void pf_tbladdr_copyout(struct pf_addr_wrap *); 238 239 /* 240 * Wrapper functions for pfil(9) hooks 241 */ 242 static pfil_return_t pf_eth_check_in(struct mbuf **m, struct ifnet *ifp, 243 int flags, void *ruleset __unused, struct inpcb *inp); 244 static pfil_return_t pf_eth_check_out(struct mbuf **m, struct ifnet *ifp, 245 int flags, void *ruleset __unused, struct inpcb *inp); 246 #ifdef INET 247 static pfil_return_t pf_check_in(struct mbuf **m, struct ifnet *ifp, 248 int flags, void *ruleset __unused, struct inpcb *inp); 249 static pfil_return_t pf_check_out(struct mbuf **m, struct ifnet *ifp, 250 int flags, void *ruleset __unused, struct inpcb *inp); 251 #endif 252 #ifdef INET6 253 static pfil_return_t pf_check6_in(struct mbuf **m, struct ifnet *ifp, 254 int flags, void *ruleset __unused, struct inpcb *inp); 255 static pfil_return_t pf_check6_out(struct mbuf **m, struct ifnet *ifp, 256 int flags, void *ruleset __unused, struct inpcb *inp); 257 #endif 258 259 static void hook_pf_eth(void); 260 static void hook_pf(void); 261 static void dehook_pf_eth(void); 262 static void dehook_pf(void); 263 static int shutdown_pf(void); 264 static int pf_load(void); 265 static void pf_unload(void); 266 267 static struct cdevsw pf_cdevsw = { 268 .d_ioctl = pfioctl, 269 .d_name = PF_NAME, 270 .d_version = D_VERSION, 271 }; 272 273 VNET_DEFINE_STATIC(bool, pf_pfil_hooked); 274 #define V_pf_pfil_hooked VNET(pf_pfil_hooked) 275 VNET_DEFINE_STATIC(bool, pf_pfil_eth_hooked); 276 #define V_pf_pfil_eth_hooked VNET(pf_pfil_eth_hooked) 277 278 /* 279 * We need a flag that is neither hooked nor running to know when 280 * the VNET is "valid". We primarily need this to control (global) 281 * external event, e.g., eventhandlers. 282 */ 283 VNET_DEFINE(int, pf_vnet_active); 284 #define V_pf_vnet_active VNET(pf_vnet_active) 285 286 int pf_end_threads; 287 struct proc *pf_purge_proc; 288 289 VNET_DEFINE(struct rmlock, pf_rules_lock); 290 VNET_DEFINE_STATIC(struct sx, pf_ioctl_lock); 291 #define V_pf_ioctl_lock VNET(pf_ioctl_lock) 292 struct sx pf_end_lock; 293 294 /* pfsync */ 295 VNET_DEFINE(pfsync_state_import_t *, pfsync_state_import_ptr); 296 VNET_DEFINE(pfsync_insert_state_t *, pfsync_insert_state_ptr); 297 VNET_DEFINE(pfsync_update_state_t *, pfsync_update_state_ptr); 298 VNET_DEFINE(pfsync_delete_state_t *, pfsync_delete_state_ptr); 299 VNET_DEFINE(pfsync_clear_states_t *, pfsync_clear_states_ptr); 300 VNET_DEFINE(pfsync_defer_t *, pfsync_defer_ptr); 301 VNET_DEFINE(pflow_export_state_t *, pflow_export_state_ptr); 302 pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr; 303 304 /* pflog */ 305 pflog_packet_t *pflog_packet_ptr = NULL; 306 307 /* 308 * Copy a user-provided string, returning an error if truncation would occur. 309 * Avoid scanning past "sz" bytes in the source string since there's no 310 * guarantee that it's nul-terminated. 311 */ 312 static int 313 pf_user_strcpy(char *dst, const char *src, size_t sz) 314 { 315 if (strnlen(src, sz) == sz) 316 return (EINVAL); 317 (void)strlcpy(dst, src, sz); 318 return (0); 319 } 320 321 static void 322 pfattach_vnet(void) 323 { 324 u_int32_t *my_timeout = V_pf_default_rule.timeout; 325 326 bzero(&V_pf_status, sizeof(V_pf_status)); 327 328 pf_initialize(); 329 pfr_initialize(); 330 pfi_initialize_vnet(); 331 pf_normalize_init(); 332 pf_syncookies_init(); 333 334 V_pf_limits[PF_LIMIT_STATES].limit = PFSTATE_HIWAT; 335 V_pf_limits[PF_LIMIT_SRC_NODES].limit = PFSNODE_HIWAT; 336 337 RB_INIT(&V_pf_anchors); 338 pf_init_kruleset(&pf_main_ruleset); 339 340 pf_init_keth(V_pf_keth); 341 342 /* default rule should never be garbage collected */ 343 V_pf_default_rule.entries.tqe_prev = &V_pf_default_rule.entries.tqe_next; 344 V_pf_default_rule.action = V_default_to_drop ? PF_DROP : PF_PASS; 345 V_pf_default_rule.nr = (uint32_t)-1; 346 V_pf_default_rule.rtableid = -1; 347 348 pf_counter_u64_init(&V_pf_default_rule.evaluations, M_WAITOK); 349 for (int i = 0; i < 2; i++) { 350 pf_counter_u64_init(&V_pf_default_rule.packets[i], M_WAITOK); 351 pf_counter_u64_init(&V_pf_default_rule.bytes[i], M_WAITOK); 352 } 353 V_pf_default_rule.states_cur = counter_u64_alloc(M_WAITOK); 354 V_pf_default_rule.states_tot = counter_u64_alloc(M_WAITOK); 355 for (pf_sn_types_t sn_type = 0; sn_type<PF_SN_MAX; sn_type++) 356 V_pf_default_rule.src_nodes[sn_type] = counter_u64_alloc(M_WAITOK); 357 358 V_pf_default_rule.timestamp = uma_zalloc_pcpu(pf_timestamp_pcpu_zone, 359 M_WAITOK | M_ZERO); 360 361 #ifdef PF_WANT_32_TO_64_COUNTER 362 V_pf_kifmarker = malloc(sizeof(*V_pf_kifmarker), PFI_MTYPE, M_WAITOK | M_ZERO); 363 V_pf_rulemarker = malloc(sizeof(*V_pf_rulemarker), M_PFRULE, M_WAITOK | M_ZERO); 364 PF_RULES_WLOCK(); 365 LIST_INSERT_HEAD(&V_pf_allkiflist, V_pf_kifmarker, pfik_allkiflist); 366 LIST_INSERT_HEAD(&V_pf_allrulelist, &V_pf_default_rule, allrulelist); 367 V_pf_allrulecount++; 368 LIST_INSERT_HEAD(&V_pf_allrulelist, V_pf_rulemarker, allrulelist); 369 PF_RULES_WUNLOCK(); 370 #endif 371 372 /* initialize default timeouts */ 373 my_timeout[PFTM_TCP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL; 374 my_timeout[PFTM_TCP_OPENING] = PFTM_TCP_OPENING_VAL; 375 my_timeout[PFTM_TCP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL; 376 my_timeout[PFTM_TCP_CLOSING] = PFTM_TCP_CLOSING_VAL; 377 my_timeout[PFTM_TCP_FIN_WAIT] = PFTM_TCP_FIN_WAIT_VAL; 378 my_timeout[PFTM_TCP_CLOSED] = PFTM_TCP_CLOSED_VAL; 379 my_timeout[PFTM_SCTP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL; 380 my_timeout[PFTM_SCTP_OPENING] = PFTM_TCP_OPENING_VAL; 381 my_timeout[PFTM_SCTP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL; 382 my_timeout[PFTM_SCTP_CLOSING] = PFTM_TCP_CLOSING_VAL; 383 my_timeout[PFTM_SCTP_CLOSED] = PFTM_TCP_CLOSED_VAL; 384 my_timeout[PFTM_UDP_FIRST_PACKET] = PFTM_UDP_FIRST_PACKET_VAL; 385 my_timeout[PFTM_UDP_SINGLE] = PFTM_UDP_SINGLE_VAL; 386 my_timeout[PFTM_UDP_MULTIPLE] = PFTM_UDP_MULTIPLE_VAL; 387 my_timeout[PFTM_ICMP_FIRST_PACKET] = PFTM_ICMP_FIRST_PACKET_VAL; 388 my_timeout[PFTM_ICMP_ERROR_REPLY] = PFTM_ICMP_ERROR_REPLY_VAL; 389 my_timeout[PFTM_OTHER_FIRST_PACKET] = PFTM_OTHER_FIRST_PACKET_VAL; 390 my_timeout[PFTM_OTHER_SINGLE] = PFTM_OTHER_SINGLE_VAL; 391 my_timeout[PFTM_OTHER_MULTIPLE] = PFTM_OTHER_MULTIPLE_VAL; 392 my_timeout[PFTM_FRAG] = PFTM_FRAG_VAL; 393 my_timeout[PFTM_INTERVAL] = PFTM_INTERVAL_VAL; 394 my_timeout[PFTM_SRC_NODE] = PFTM_SRC_NODE_VAL; 395 my_timeout[PFTM_TS_DIFF] = PFTM_TS_DIFF_VAL; 396 my_timeout[PFTM_ADAPTIVE_START] = PFSTATE_ADAPT_START; 397 my_timeout[PFTM_ADAPTIVE_END] = PFSTATE_ADAPT_END; 398 399 V_pf_status.debug = PF_DEBUG_URGENT; 400 /* 401 * XXX This is different than in OpenBSD where reassembly is enabled by 402 * defult. In FreeBSD we expect people to still use scrub rules and 403 * switch to the new syntax later. Only when they switch they must 404 * explicitly enable reassemle. We could change the default once the 405 * scrub rule functionality is hopefully removed some day in future. 406 */ 407 V_pf_status.reass = 0; 408 409 V_pf_pfil_hooked = false; 410 V_pf_pfil_eth_hooked = false; 411 412 /* XXX do our best to avoid a conflict */ 413 V_pf_status.hostid = arc4random(); 414 415 for (int i = 0; i < PFRES_MAX; i++) 416 V_pf_status.counters[i] = counter_u64_alloc(M_WAITOK); 417 for (int i = 0; i < KLCNT_MAX; i++) 418 V_pf_status.lcounters[i] = counter_u64_alloc(M_WAITOK); 419 for (int i = 0; i < FCNT_MAX; i++) 420 pf_counter_u64_init(&V_pf_status.fcounters[i], M_WAITOK); 421 for (int i = 0; i < SCNT_MAX; i++) 422 V_pf_status.scounters[i] = counter_u64_alloc(M_WAITOK); 423 424 if (swi_add(&V_pf_swi_ie, "pf send", pf_intr, curvnet, SWI_NET, 425 INTR_MPSAFE, &V_pf_swi_cookie) != 0) 426 /* XXXGL: leaked all above. */ 427 return; 428 } 429 430 static struct pf_kpool * 431 pf_get_kpool(const char *anchor, u_int32_t ticket, u_int8_t rule_action, 432 u_int32_t rule_number, u_int8_t r_last, u_int8_t active, 433 u_int8_t check_ticket, int which) 434 { 435 struct pf_kruleset *ruleset; 436 struct pf_krule *rule; 437 int rs_num; 438 439 MPASS(which == PF_RDR || which == PF_NAT || which == PF_RT); 440 441 ruleset = pf_find_kruleset(anchor); 442 if (ruleset == NULL) 443 return (NULL); 444 rs_num = pf_get_ruleset_number(rule_action); 445 if (rs_num >= PF_RULESET_MAX) 446 return (NULL); 447 if (active) { 448 if (check_ticket && ticket != 449 ruleset->rules[rs_num].active.ticket) 450 return (NULL); 451 if (r_last) 452 rule = TAILQ_LAST(ruleset->rules[rs_num].active.ptr, 453 pf_krulequeue); 454 else 455 rule = TAILQ_FIRST(ruleset->rules[rs_num].active.ptr); 456 } else { 457 if (check_ticket && ticket != 458 ruleset->rules[rs_num].inactive.ticket) 459 return (NULL); 460 if (r_last) 461 rule = TAILQ_LAST(ruleset->rules[rs_num].inactive.ptr, 462 pf_krulequeue); 463 else 464 rule = TAILQ_FIRST(ruleset->rules[rs_num].inactive.ptr); 465 } 466 if (!r_last) { 467 while ((rule != NULL) && (rule->nr != rule_number)) 468 rule = TAILQ_NEXT(rule, entries); 469 } 470 if (rule == NULL) 471 return (NULL); 472 473 switch (which) { 474 case PF_RDR: 475 return (&rule->rdr); 476 case PF_NAT: 477 return (&rule->nat); 478 case PF_RT: 479 return (&rule->route); 480 default: 481 panic("Unknow pool type %d", which); 482 } 483 } 484 485 static void 486 pf_mv_kpool(struct pf_kpalist *poola, struct pf_kpalist *poolb) 487 { 488 struct pf_kpooladdr *mv_pool_pa; 489 490 while ((mv_pool_pa = TAILQ_FIRST(poola)) != NULL) { 491 TAILQ_REMOVE(poola, mv_pool_pa, entries); 492 TAILQ_INSERT_TAIL(poolb, mv_pool_pa, entries); 493 } 494 } 495 496 static void 497 pf_empty_kpool(struct pf_kpalist *poola) 498 { 499 struct pf_kpooladdr *pa; 500 501 while ((pa = TAILQ_FIRST(poola)) != NULL) { 502 switch (pa->addr.type) { 503 case PF_ADDR_DYNIFTL: 504 pfi_dynaddr_remove(pa->addr.p.dyn); 505 break; 506 case PF_ADDR_TABLE: 507 /* XXX: this could be unfinished pooladdr on pabuf */ 508 if (pa->addr.p.tbl != NULL) 509 pfr_detach_table(pa->addr.p.tbl); 510 break; 511 } 512 if (pa->kif) 513 pfi_kkif_unref(pa->kif); 514 TAILQ_REMOVE(poola, pa, entries); 515 free(pa, M_PFRULE); 516 } 517 } 518 519 static void 520 pf_unlink_rule_locked(struct pf_krulequeue *rulequeue, struct pf_krule *rule) 521 { 522 523 PF_RULES_WASSERT(); 524 PF_UNLNKDRULES_ASSERT(); 525 526 TAILQ_REMOVE(rulequeue, rule, entries); 527 528 rule->rule_ref |= PFRULE_REFS; 529 TAILQ_INSERT_TAIL(&V_pf_unlinked_rules, rule, entries); 530 } 531 532 static void 533 pf_unlink_rule(struct pf_krulequeue *rulequeue, struct pf_krule *rule) 534 { 535 536 PF_RULES_WASSERT(); 537 538 PF_UNLNKDRULES_LOCK(); 539 pf_unlink_rule_locked(rulequeue, rule); 540 PF_UNLNKDRULES_UNLOCK(); 541 } 542 543 static void 544 pf_free_eth_rule(struct pf_keth_rule *rule) 545 { 546 PF_RULES_WASSERT(); 547 548 if (rule == NULL) 549 return; 550 551 if (rule->tag) 552 tag_unref(&V_pf_tags, rule->tag); 553 if (rule->match_tag) 554 tag_unref(&V_pf_tags, rule->match_tag); 555 #ifdef ALTQ 556 pf_qid_unref(rule->qid); 557 #endif 558 559 if (rule->bridge_to) 560 pfi_kkif_unref(rule->bridge_to); 561 if (rule->kif) 562 pfi_kkif_unref(rule->kif); 563 564 if (rule->ipsrc.addr.type == PF_ADDR_TABLE) 565 pfr_detach_table(rule->ipsrc.addr.p.tbl); 566 if (rule->ipdst.addr.type == PF_ADDR_TABLE) 567 pfr_detach_table(rule->ipdst.addr.p.tbl); 568 569 counter_u64_free(rule->evaluations); 570 for (int i = 0; i < 2; i++) { 571 counter_u64_free(rule->packets[i]); 572 counter_u64_free(rule->bytes[i]); 573 } 574 uma_zfree_pcpu(pf_timestamp_pcpu_zone, rule->timestamp); 575 pf_keth_anchor_remove(rule); 576 577 free(rule, M_PFRULE); 578 } 579 580 void 581 pf_free_rule(struct pf_krule *rule) 582 { 583 584 PF_RULES_WASSERT(); 585 PF_CONFIG_ASSERT(); 586 587 if (rule->tag) 588 tag_unref(&V_pf_tags, rule->tag); 589 if (rule->match_tag) 590 tag_unref(&V_pf_tags, rule->match_tag); 591 #ifdef ALTQ 592 if (rule->pqid != rule->qid) 593 pf_qid_unref(rule->pqid); 594 pf_qid_unref(rule->qid); 595 #endif 596 switch (rule->src.addr.type) { 597 case PF_ADDR_DYNIFTL: 598 pfi_dynaddr_remove(rule->src.addr.p.dyn); 599 break; 600 case PF_ADDR_TABLE: 601 pfr_detach_table(rule->src.addr.p.tbl); 602 break; 603 } 604 switch (rule->dst.addr.type) { 605 case PF_ADDR_DYNIFTL: 606 pfi_dynaddr_remove(rule->dst.addr.p.dyn); 607 break; 608 case PF_ADDR_TABLE: 609 pfr_detach_table(rule->dst.addr.p.tbl); 610 break; 611 } 612 if (rule->overload_tbl) 613 pfr_detach_table(rule->overload_tbl); 614 if (rule->kif) 615 pfi_kkif_unref(rule->kif); 616 if (rule->rcv_kif) 617 pfi_kkif_unref(rule->rcv_kif); 618 pf_kanchor_remove(rule); 619 pf_empty_kpool(&rule->rdr.list); 620 pf_empty_kpool(&rule->nat.list); 621 pf_empty_kpool(&rule->route.list); 622 623 pf_krule_free(rule); 624 } 625 626 static void 627 pf_init_tagset(struct pf_tagset *ts, unsigned int *tunable_size, 628 unsigned int default_size) 629 { 630 unsigned int i; 631 unsigned int hashsize; 632 633 if (*tunable_size == 0 || !powerof2(*tunable_size)) 634 *tunable_size = default_size; 635 636 hashsize = *tunable_size; 637 ts->namehash = mallocarray(hashsize, sizeof(*ts->namehash), M_PFHASH, 638 M_WAITOK); 639 ts->taghash = mallocarray(hashsize, sizeof(*ts->taghash), M_PFHASH, 640 M_WAITOK); 641 ts->mask = hashsize - 1; 642 ts->seed = arc4random(); 643 for (i = 0; i < hashsize; i++) { 644 TAILQ_INIT(&ts->namehash[i]); 645 TAILQ_INIT(&ts->taghash[i]); 646 } 647 BIT_FILL(TAGID_MAX, &ts->avail); 648 } 649 650 static void 651 pf_cleanup_tagset(struct pf_tagset *ts) 652 { 653 unsigned int i; 654 unsigned int hashsize; 655 struct pf_tagname *t, *tmp; 656 657 /* 658 * Only need to clean up one of the hashes as each tag is hashed 659 * into each table. 660 */ 661 hashsize = ts->mask + 1; 662 for (i = 0; i < hashsize; i++) 663 TAILQ_FOREACH_SAFE(t, &ts->namehash[i], namehash_entries, tmp) 664 uma_zfree(V_pf_tag_z, t); 665 666 free(ts->namehash, M_PFHASH); 667 free(ts->taghash, M_PFHASH); 668 } 669 670 static uint16_t 671 tagname2hashindex(const struct pf_tagset *ts, const char *tagname) 672 { 673 size_t len; 674 675 len = strnlen(tagname, PF_TAG_NAME_SIZE - 1); 676 return (murmur3_32_hash(tagname, len, ts->seed) & ts->mask); 677 } 678 679 static uint16_t 680 tag2hashindex(const struct pf_tagset *ts, uint16_t tag) 681 { 682 683 return (tag & ts->mask); 684 } 685 686 static u_int16_t 687 tagname2tag(struct pf_tagset *ts, const char *tagname) 688 { 689 struct pf_tagname *tag; 690 u_int32_t index; 691 u_int16_t new_tagid; 692 693 PF_RULES_WASSERT(); 694 695 index = tagname2hashindex(ts, tagname); 696 TAILQ_FOREACH(tag, &ts->namehash[index], namehash_entries) 697 if (strcmp(tagname, tag->name) == 0) { 698 tag->ref++; 699 return (tag->tag); 700 } 701 702 /* 703 * new entry 704 * 705 * to avoid fragmentation, we do a linear search from the beginning 706 * and take the first free slot we find. 707 */ 708 new_tagid = BIT_FFS(TAGID_MAX, &ts->avail); 709 /* 710 * Tags are 1-based, with valid tags in the range [1..TAGID_MAX]. 711 * BIT_FFS() returns a 1-based bit number, with 0 indicating no bits 712 * set. It may also return a bit number greater than TAGID_MAX due 713 * to rounding of the number of bits in the vector up to a multiple 714 * of the vector word size at declaration/allocation time. 715 */ 716 if ((new_tagid == 0) || (new_tagid > TAGID_MAX)) 717 return (0); 718 719 /* Mark the tag as in use. Bits are 0-based for BIT_CLR() */ 720 BIT_CLR(TAGID_MAX, new_tagid - 1, &ts->avail); 721 722 /* allocate and fill new struct pf_tagname */ 723 tag = uma_zalloc(V_pf_tag_z, M_NOWAIT); 724 if (tag == NULL) 725 return (0); 726 strlcpy(tag->name, tagname, sizeof(tag->name)); 727 tag->tag = new_tagid; 728 tag->ref = 1; 729 730 /* Insert into namehash */ 731 TAILQ_INSERT_TAIL(&ts->namehash[index], tag, namehash_entries); 732 733 /* Insert into taghash */ 734 index = tag2hashindex(ts, new_tagid); 735 TAILQ_INSERT_TAIL(&ts->taghash[index], tag, taghash_entries); 736 737 return (tag->tag); 738 } 739 740 static void 741 tag_unref(struct pf_tagset *ts, u_int16_t tag) 742 { 743 struct pf_tagname *t; 744 uint16_t index; 745 746 PF_RULES_WASSERT(); 747 748 index = tag2hashindex(ts, tag); 749 TAILQ_FOREACH(t, &ts->taghash[index], taghash_entries) 750 if (tag == t->tag) { 751 if (--t->ref == 0) { 752 TAILQ_REMOVE(&ts->taghash[index], t, 753 taghash_entries); 754 index = tagname2hashindex(ts, t->name); 755 TAILQ_REMOVE(&ts->namehash[index], t, 756 namehash_entries); 757 /* Bits are 0-based for BIT_SET() */ 758 BIT_SET(TAGID_MAX, tag - 1, &ts->avail); 759 uma_zfree(V_pf_tag_z, t); 760 } 761 break; 762 } 763 } 764 765 static uint16_t 766 pf_tagname2tag(const char *tagname) 767 { 768 return (tagname2tag(&V_pf_tags, tagname)); 769 } 770 771 static int 772 pf_begin_eth(uint32_t *ticket, const char *anchor) 773 { 774 struct pf_keth_rule *rule, *tmp; 775 struct pf_keth_ruleset *rs; 776 777 PF_RULES_WASSERT(); 778 779 rs = pf_find_or_create_keth_ruleset(anchor); 780 if (rs == NULL) 781 return (EINVAL); 782 783 /* Purge old inactive rules. */ 784 TAILQ_FOREACH_SAFE(rule, rs->inactive.rules, entries, 785 tmp) { 786 TAILQ_REMOVE(rs->inactive.rules, rule, 787 entries); 788 pf_free_eth_rule(rule); 789 } 790 791 *ticket = ++rs->inactive.ticket; 792 rs->inactive.open = 1; 793 794 return (0); 795 } 796 797 static int 798 pf_rollback_eth(uint32_t ticket, const char *anchor) 799 { 800 struct pf_keth_rule *rule, *tmp; 801 struct pf_keth_ruleset *rs; 802 803 PF_RULES_WASSERT(); 804 805 rs = pf_find_keth_ruleset(anchor); 806 if (rs == NULL) 807 return (EINVAL); 808 809 if (!rs->inactive.open || 810 ticket != rs->inactive.ticket) 811 return (0); 812 813 /* Purge old inactive rules. */ 814 TAILQ_FOREACH_SAFE(rule, rs->inactive.rules, entries, 815 tmp) { 816 TAILQ_REMOVE(rs->inactive.rules, rule, entries); 817 pf_free_eth_rule(rule); 818 } 819 820 rs->inactive.open = 0; 821 822 pf_remove_if_empty_keth_ruleset(rs); 823 824 return (0); 825 } 826 827 #define PF_SET_SKIP_STEPS(i) \ 828 do { \ 829 while (head[i] != cur) { \ 830 head[i]->skip[i].ptr = cur; \ 831 head[i] = TAILQ_NEXT(head[i], entries); \ 832 } \ 833 } while (0) 834 835 static void 836 pf_eth_calc_skip_steps(struct pf_keth_ruleq *rules) 837 { 838 struct pf_keth_rule *cur, *prev, *head[PFE_SKIP_COUNT]; 839 int i; 840 841 cur = TAILQ_FIRST(rules); 842 prev = cur; 843 for (i = 0; i < PFE_SKIP_COUNT; ++i) 844 head[i] = cur; 845 while (cur != NULL) { 846 if (cur->kif != prev->kif || cur->ifnot != prev->ifnot) 847 PF_SET_SKIP_STEPS(PFE_SKIP_IFP); 848 if (cur->direction != prev->direction) 849 PF_SET_SKIP_STEPS(PFE_SKIP_DIR); 850 if (cur->proto != prev->proto) 851 PF_SET_SKIP_STEPS(PFE_SKIP_PROTO); 852 if (memcmp(&cur->src, &prev->src, sizeof(cur->src)) != 0) 853 PF_SET_SKIP_STEPS(PFE_SKIP_SRC_ADDR); 854 if (memcmp(&cur->dst, &prev->dst, sizeof(cur->dst)) != 0) 855 PF_SET_SKIP_STEPS(PFE_SKIP_DST_ADDR); 856 if (cur->ipsrc.neg != prev->ipsrc.neg || 857 pf_addr_wrap_neq(&cur->ipsrc.addr, &prev->ipsrc.addr)) 858 PF_SET_SKIP_STEPS(PFE_SKIP_SRC_IP_ADDR); 859 if (cur->ipdst.neg != prev->ipdst.neg || 860 pf_addr_wrap_neq(&cur->ipdst.addr, &prev->ipdst.addr)) 861 PF_SET_SKIP_STEPS(PFE_SKIP_DST_IP_ADDR); 862 863 prev = cur; 864 cur = TAILQ_NEXT(cur, entries); 865 } 866 for (i = 0; i < PFE_SKIP_COUNT; ++i) 867 PF_SET_SKIP_STEPS(i); 868 } 869 870 static int 871 pf_commit_eth(uint32_t ticket, const char *anchor) 872 { 873 struct pf_keth_ruleq *rules; 874 struct pf_keth_ruleset *rs; 875 876 rs = pf_find_keth_ruleset(anchor); 877 if (rs == NULL) { 878 return (EINVAL); 879 } 880 881 if (!rs->inactive.open || 882 ticket != rs->inactive.ticket) 883 return (EBUSY); 884 885 PF_RULES_WASSERT(); 886 887 pf_eth_calc_skip_steps(rs->inactive.rules); 888 889 rules = rs->active.rules; 890 atomic_store_ptr(&rs->active.rules, rs->inactive.rules); 891 rs->inactive.rules = rules; 892 rs->inactive.ticket = rs->active.ticket; 893 894 return (pf_rollback_eth(rs->inactive.ticket, 895 rs->anchor ? rs->anchor->path : "")); 896 } 897 898 #ifdef ALTQ 899 static uint16_t 900 pf_qname2qid(const char *qname) 901 { 902 return (tagname2tag(&V_pf_qids, qname)); 903 } 904 905 static void 906 pf_qid_unref(uint16_t qid) 907 { 908 tag_unref(&V_pf_qids, qid); 909 } 910 911 static int 912 pf_begin_altq(u_int32_t *ticket) 913 { 914 struct pf_altq *altq, *tmp; 915 int error = 0; 916 917 PF_RULES_WASSERT(); 918 919 /* Purge the old altq lists */ 920 TAILQ_FOREACH_SAFE(altq, V_pf_altq_ifs_inactive, entries, tmp) { 921 if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) { 922 /* detach and destroy the discipline */ 923 error = altq_remove(altq); 924 } 925 free(altq, M_PFALTQ); 926 } 927 TAILQ_INIT(V_pf_altq_ifs_inactive); 928 TAILQ_FOREACH_SAFE(altq, V_pf_altqs_inactive, entries, tmp) { 929 pf_qid_unref(altq->qid); 930 free(altq, M_PFALTQ); 931 } 932 TAILQ_INIT(V_pf_altqs_inactive); 933 if (error) 934 return (error); 935 *ticket = ++V_ticket_altqs_inactive; 936 V_altqs_inactive_open = 1; 937 return (0); 938 } 939 940 static int 941 pf_rollback_altq(u_int32_t ticket) 942 { 943 struct pf_altq *altq, *tmp; 944 int error = 0; 945 946 PF_RULES_WASSERT(); 947 948 if (!V_altqs_inactive_open || ticket != V_ticket_altqs_inactive) 949 return (0); 950 /* Purge the old altq lists */ 951 TAILQ_FOREACH_SAFE(altq, V_pf_altq_ifs_inactive, entries, tmp) { 952 if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) { 953 /* detach and destroy the discipline */ 954 error = altq_remove(altq); 955 } 956 free(altq, M_PFALTQ); 957 } 958 TAILQ_INIT(V_pf_altq_ifs_inactive); 959 TAILQ_FOREACH_SAFE(altq, V_pf_altqs_inactive, entries, tmp) { 960 pf_qid_unref(altq->qid); 961 free(altq, M_PFALTQ); 962 } 963 TAILQ_INIT(V_pf_altqs_inactive); 964 V_altqs_inactive_open = 0; 965 return (error); 966 } 967 968 static int 969 pf_commit_altq(u_int32_t ticket) 970 { 971 struct pf_altqqueue *old_altqs, *old_altq_ifs; 972 struct pf_altq *altq, *tmp; 973 int err, error = 0; 974 975 PF_RULES_WASSERT(); 976 977 if (!V_altqs_inactive_open || ticket != V_ticket_altqs_inactive) 978 return (EBUSY); 979 980 /* swap altqs, keep the old. */ 981 old_altqs = V_pf_altqs_active; 982 old_altq_ifs = V_pf_altq_ifs_active; 983 V_pf_altqs_active = V_pf_altqs_inactive; 984 V_pf_altq_ifs_active = V_pf_altq_ifs_inactive; 985 V_pf_altqs_inactive = old_altqs; 986 V_pf_altq_ifs_inactive = old_altq_ifs; 987 V_ticket_altqs_active = V_ticket_altqs_inactive; 988 989 /* Attach new disciplines */ 990 TAILQ_FOREACH(altq, V_pf_altq_ifs_active, entries) { 991 if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) { 992 /* attach the discipline */ 993 error = altq_pfattach(altq); 994 if (error == 0 && V_pf_altq_running) 995 error = pf_enable_altq(altq); 996 if (error != 0) 997 return (error); 998 } 999 } 1000 1001 /* Purge the old altq lists */ 1002 TAILQ_FOREACH_SAFE(altq, V_pf_altq_ifs_inactive, entries, tmp) { 1003 if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) { 1004 /* detach and destroy the discipline */ 1005 if (V_pf_altq_running) 1006 error = pf_disable_altq(altq); 1007 err = altq_pfdetach(altq); 1008 if (err != 0 && error == 0) 1009 error = err; 1010 err = altq_remove(altq); 1011 if (err != 0 && error == 0) 1012 error = err; 1013 } 1014 free(altq, M_PFALTQ); 1015 } 1016 TAILQ_INIT(V_pf_altq_ifs_inactive); 1017 TAILQ_FOREACH_SAFE(altq, V_pf_altqs_inactive, entries, tmp) { 1018 pf_qid_unref(altq->qid); 1019 free(altq, M_PFALTQ); 1020 } 1021 TAILQ_INIT(V_pf_altqs_inactive); 1022 1023 V_altqs_inactive_open = 0; 1024 return (error); 1025 } 1026 1027 static int 1028 pf_enable_altq(struct pf_altq *altq) 1029 { 1030 struct ifnet *ifp; 1031 struct tb_profile tb; 1032 int error = 0; 1033 1034 if ((ifp = ifunit(altq->ifname)) == NULL) 1035 return (EINVAL); 1036 1037 if (ifp->if_snd.altq_type != ALTQT_NONE) 1038 error = altq_enable(&ifp->if_snd); 1039 1040 /* set tokenbucket regulator */ 1041 if (error == 0 && ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) { 1042 tb.rate = altq->ifbandwidth; 1043 tb.depth = altq->tbrsize; 1044 error = tbr_set(&ifp->if_snd, &tb); 1045 } 1046 1047 return (error); 1048 } 1049 1050 static int 1051 pf_disable_altq(struct pf_altq *altq) 1052 { 1053 struct ifnet *ifp; 1054 struct tb_profile tb; 1055 int error; 1056 1057 if ((ifp = ifunit(altq->ifname)) == NULL) 1058 return (EINVAL); 1059 1060 /* 1061 * when the discipline is no longer referenced, it was overridden 1062 * by a new one. if so, just return. 1063 */ 1064 if (altq->altq_disc != ifp->if_snd.altq_disc) 1065 return (0); 1066 1067 error = altq_disable(&ifp->if_snd); 1068 1069 if (error == 0) { 1070 /* clear tokenbucket regulator */ 1071 tb.rate = 0; 1072 error = tbr_set(&ifp->if_snd, &tb); 1073 } 1074 1075 return (error); 1076 } 1077 1078 static int 1079 pf_altq_ifnet_event_add(struct ifnet *ifp, int remove, u_int32_t ticket, 1080 struct pf_altq *altq) 1081 { 1082 struct ifnet *ifp1; 1083 int error = 0; 1084 1085 /* Deactivate the interface in question */ 1086 altq->local_flags &= ~PFALTQ_FLAG_IF_REMOVED; 1087 if ((ifp1 = ifunit(altq->ifname)) == NULL || 1088 (remove && ifp1 == ifp)) { 1089 altq->local_flags |= PFALTQ_FLAG_IF_REMOVED; 1090 } else { 1091 error = altq_add(ifp1, altq); 1092 1093 if (ticket != V_ticket_altqs_inactive) 1094 error = EBUSY; 1095 1096 if (error) 1097 free(altq, M_PFALTQ); 1098 } 1099 1100 return (error); 1101 } 1102 1103 void 1104 pf_altq_ifnet_event(struct ifnet *ifp, int remove) 1105 { 1106 struct pf_altq *a1, *a2, *a3; 1107 u_int32_t ticket; 1108 int error = 0; 1109 1110 /* 1111 * No need to re-evaluate the configuration for events on interfaces 1112 * that do not support ALTQ, as it's not possible for such 1113 * interfaces to be part of the configuration. 1114 */ 1115 if (!ALTQ_IS_READY(&ifp->if_snd)) 1116 return; 1117 1118 /* Interrupt userland queue modifications */ 1119 if (V_altqs_inactive_open) 1120 pf_rollback_altq(V_ticket_altqs_inactive); 1121 1122 /* Start new altq ruleset */ 1123 if (pf_begin_altq(&ticket)) 1124 return; 1125 1126 /* Copy the current active set */ 1127 TAILQ_FOREACH(a1, V_pf_altq_ifs_active, entries) { 1128 a2 = malloc(sizeof(*a2), M_PFALTQ, M_NOWAIT); 1129 if (a2 == NULL) { 1130 error = ENOMEM; 1131 break; 1132 } 1133 bcopy(a1, a2, sizeof(struct pf_altq)); 1134 1135 error = pf_altq_ifnet_event_add(ifp, remove, ticket, a2); 1136 if (error) 1137 break; 1138 1139 TAILQ_INSERT_TAIL(V_pf_altq_ifs_inactive, a2, entries); 1140 } 1141 if (error) 1142 goto out; 1143 TAILQ_FOREACH(a1, V_pf_altqs_active, entries) { 1144 a2 = malloc(sizeof(*a2), M_PFALTQ, M_NOWAIT); 1145 if (a2 == NULL) { 1146 error = ENOMEM; 1147 break; 1148 } 1149 bcopy(a1, a2, sizeof(struct pf_altq)); 1150 1151 if ((a2->qid = pf_qname2qid(a2->qname)) == 0) { 1152 error = EBUSY; 1153 free(a2, M_PFALTQ); 1154 break; 1155 } 1156 a2->altq_disc = NULL; 1157 TAILQ_FOREACH(a3, V_pf_altq_ifs_inactive, entries) { 1158 if (strncmp(a3->ifname, a2->ifname, 1159 IFNAMSIZ) == 0) { 1160 a2->altq_disc = a3->altq_disc; 1161 break; 1162 } 1163 } 1164 error = pf_altq_ifnet_event_add(ifp, remove, ticket, a2); 1165 if (error) 1166 break; 1167 1168 TAILQ_INSERT_TAIL(V_pf_altqs_inactive, a2, entries); 1169 } 1170 1171 out: 1172 if (error != 0) 1173 pf_rollback_altq(ticket); 1174 else 1175 pf_commit_altq(ticket); 1176 } 1177 #endif /* ALTQ */ 1178 1179 static struct pf_krule_global * 1180 pf_rule_tree_alloc(int flags) 1181 { 1182 struct pf_krule_global *tree; 1183 1184 tree = malloc(sizeof(struct pf_krule_global), M_TEMP, flags); 1185 if (tree == NULL) 1186 return (NULL); 1187 RB_INIT(tree); 1188 return (tree); 1189 } 1190 1191 static void 1192 pf_rule_tree_free(struct pf_krule_global *tree) 1193 { 1194 1195 free(tree, M_TEMP); 1196 } 1197 1198 static int 1199 pf_begin_rules(u_int32_t *ticket, int rs_num, const char *anchor) 1200 { 1201 struct pf_krule_global *tree; 1202 struct pf_kruleset *rs; 1203 struct pf_krule *rule; 1204 1205 PF_RULES_WASSERT(); 1206 1207 if (rs_num < 0 || rs_num >= PF_RULESET_MAX) 1208 return (EINVAL); 1209 tree = pf_rule_tree_alloc(M_NOWAIT); 1210 if (tree == NULL) 1211 return (ENOMEM); 1212 rs = pf_find_or_create_kruleset(anchor); 1213 if (rs == NULL) { 1214 free(tree, M_TEMP); 1215 return (EINVAL); 1216 } 1217 pf_rule_tree_free(rs->rules[rs_num].inactive.tree); 1218 rs->rules[rs_num].inactive.tree = tree; 1219 1220 while ((rule = TAILQ_FIRST(rs->rules[rs_num].inactive.ptr)) != NULL) { 1221 pf_unlink_rule(rs->rules[rs_num].inactive.ptr, rule); 1222 rs->rules[rs_num].inactive.rcount--; 1223 } 1224 *ticket = ++rs->rules[rs_num].inactive.ticket; 1225 rs->rules[rs_num].inactive.open = 1; 1226 return (0); 1227 } 1228 1229 static int 1230 pf_rollback_rules(u_int32_t ticket, int rs_num, char *anchor) 1231 { 1232 struct pf_kruleset *rs; 1233 struct pf_krule *rule; 1234 1235 PF_RULES_WASSERT(); 1236 1237 if (rs_num < 0 || rs_num >= PF_RULESET_MAX) 1238 return (EINVAL); 1239 rs = pf_find_kruleset(anchor); 1240 if (rs == NULL || !rs->rules[rs_num].inactive.open || 1241 rs->rules[rs_num].inactive.ticket != ticket) 1242 return (0); 1243 while ((rule = TAILQ_FIRST(rs->rules[rs_num].inactive.ptr)) != NULL) { 1244 pf_unlink_rule(rs->rules[rs_num].inactive.ptr, rule); 1245 rs->rules[rs_num].inactive.rcount--; 1246 } 1247 rs->rules[rs_num].inactive.open = 0; 1248 return (0); 1249 } 1250 1251 #define PF_MD5_UPD(st, elm) \ 1252 MD5Update(ctx, (u_int8_t *) &(st)->elm, sizeof((st)->elm)) 1253 1254 #define PF_MD5_UPD_STR(st, elm) \ 1255 MD5Update(ctx, (u_int8_t *) (st)->elm, strlen((st)->elm)) 1256 1257 #define PF_MD5_UPD_HTONL(st, elm, stor) do { \ 1258 (stor) = htonl((st)->elm); \ 1259 MD5Update(ctx, (u_int8_t *) &(stor), sizeof(u_int32_t));\ 1260 } while (0) 1261 1262 #define PF_MD5_UPD_HTONS(st, elm, stor) do { \ 1263 (stor) = htons((st)->elm); \ 1264 MD5Update(ctx, (u_int8_t *) &(stor), sizeof(u_int16_t));\ 1265 } while (0) 1266 1267 static void 1268 pf_hash_rule_addr(MD5_CTX *ctx, struct pf_rule_addr *pfr) 1269 { 1270 PF_MD5_UPD(pfr, addr.type); 1271 switch (pfr->addr.type) { 1272 case PF_ADDR_DYNIFTL: 1273 PF_MD5_UPD(pfr, addr.v.ifname); 1274 PF_MD5_UPD(pfr, addr.iflags); 1275 break; 1276 case PF_ADDR_TABLE: 1277 PF_MD5_UPD(pfr, addr.v.tblname); 1278 break; 1279 case PF_ADDR_ADDRMASK: 1280 /* XXX ignore af? */ 1281 PF_MD5_UPD(pfr, addr.v.a.addr.addr32); 1282 PF_MD5_UPD(pfr, addr.v.a.mask.addr32); 1283 break; 1284 } 1285 1286 PF_MD5_UPD(pfr, port[0]); 1287 PF_MD5_UPD(pfr, port[1]); 1288 PF_MD5_UPD(pfr, neg); 1289 PF_MD5_UPD(pfr, port_op); 1290 } 1291 1292 static void 1293 pf_hash_rule_rolling(MD5_CTX *ctx, struct pf_krule *rule) 1294 { 1295 u_int16_t x; 1296 u_int32_t y; 1297 1298 pf_hash_rule_addr(ctx, &rule->src); 1299 pf_hash_rule_addr(ctx, &rule->dst); 1300 for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) 1301 PF_MD5_UPD_STR(rule, label[i]); 1302 PF_MD5_UPD_STR(rule, ifname); 1303 PF_MD5_UPD_STR(rule, rcv_ifname); 1304 PF_MD5_UPD_STR(rule, match_tagname); 1305 PF_MD5_UPD_HTONS(rule, match_tag, x); /* dup? */ 1306 PF_MD5_UPD_HTONL(rule, os_fingerprint, y); 1307 PF_MD5_UPD_HTONL(rule, prob, y); 1308 PF_MD5_UPD_HTONL(rule, uid.uid[0], y); 1309 PF_MD5_UPD_HTONL(rule, uid.uid[1], y); 1310 PF_MD5_UPD(rule, uid.op); 1311 PF_MD5_UPD_HTONL(rule, gid.gid[0], y); 1312 PF_MD5_UPD_HTONL(rule, gid.gid[1], y); 1313 PF_MD5_UPD(rule, gid.op); 1314 PF_MD5_UPD_HTONL(rule, rule_flag, y); 1315 PF_MD5_UPD(rule, action); 1316 PF_MD5_UPD(rule, direction); 1317 PF_MD5_UPD(rule, af); 1318 PF_MD5_UPD(rule, quick); 1319 PF_MD5_UPD(rule, ifnot); 1320 PF_MD5_UPD(rule, rcvifnot); 1321 PF_MD5_UPD(rule, match_tag_not); 1322 PF_MD5_UPD(rule, natpass); 1323 PF_MD5_UPD(rule, keep_state); 1324 PF_MD5_UPD(rule, proto); 1325 PF_MD5_UPD(rule, type); 1326 PF_MD5_UPD(rule, code); 1327 PF_MD5_UPD(rule, flags); 1328 PF_MD5_UPD(rule, flagset); 1329 PF_MD5_UPD(rule, allow_opts); 1330 PF_MD5_UPD(rule, rt); 1331 PF_MD5_UPD(rule, tos); 1332 PF_MD5_UPD(rule, scrub_flags); 1333 PF_MD5_UPD(rule, min_ttl); 1334 PF_MD5_UPD(rule, set_tos); 1335 if (rule->anchor != NULL) 1336 PF_MD5_UPD_STR(rule, anchor->path); 1337 } 1338 1339 static void 1340 pf_hash_rule(struct pf_krule *rule) 1341 { 1342 MD5_CTX ctx; 1343 1344 MD5Init(&ctx); 1345 pf_hash_rule_rolling(&ctx, rule); 1346 MD5Final(rule->md5sum, &ctx); 1347 } 1348 1349 static int 1350 pf_krule_compare(struct pf_krule *a, struct pf_krule *b) 1351 { 1352 1353 return (memcmp(a->md5sum, b->md5sum, PF_MD5_DIGEST_LENGTH)); 1354 } 1355 1356 static int 1357 pf_commit_rules(u_int32_t ticket, int rs_num, char *anchor) 1358 { 1359 struct pf_kruleset *rs; 1360 struct pf_krule *rule, **old_array, *old_rule; 1361 struct pf_krulequeue *old_rules; 1362 struct pf_krule_global *old_tree; 1363 int error; 1364 u_int32_t old_rcount; 1365 1366 PF_RULES_WASSERT(); 1367 1368 if (rs_num < 0 || rs_num >= PF_RULESET_MAX) 1369 return (EINVAL); 1370 rs = pf_find_kruleset(anchor); 1371 if (rs == NULL || !rs->rules[rs_num].inactive.open || 1372 ticket != rs->rules[rs_num].inactive.ticket) 1373 return (EBUSY); 1374 1375 /* Calculate checksum for the main ruleset */ 1376 if (rs == &pf_main_ruleset) { 1377 error = pf_setup_pfsync_matching(rs); 1378 if (error != 0) 1379 return (error); 1380 } 1381 1382 /* Swap rules, keep the old. */ 1383 old_rules = rs->rules[rs_num].active.ptr; 1384 old_rcount = rs->rules[rs_num].active.rcount; 1385 old_array = rs->rules[rs_num].active.ptr_array; 1386 old_tree = rs->rules[rs_num].active.tree; 1387 1388 rs->rules[rs_num].active.ptr = 1389 rs->rules[rs_num].inactive.ptr; 1390 rs->rules[rs_num].active.ptr_array = 1391 rs->rules[rs_num].inactive.ptr_array; 1392 rs->rules[rs_num].active.tree = 1393 rs->rules[rs_num].inactive.tree; 1394 rs->rules[rs_num].active.rcount = 1395 rs->rules[rs_num].inactive.rcount; 1396 1397 /* Attempt to preserve counter information. */ 1398 if (V_pf_status.keep_counters && old_tree != NULL) { 1399 TAILQ_FOREACH(rule, rs->rules[rs_num].active.ptr, 1400 entries) { 1401 old_rule = RB_FIND(pf_krule_global, old_tree, rule); 1402 if (old_rule == NULL) { 1403 continue; 1404 } 1405 pf_counter_u64_critical_enter(); 1406 pf_counter_u64_rollup_protected(&rule->evaluations, 1407 pf_counter_u64_fetch(&old_rule->evaluations)); 1408 pf_counter_u64_rollup_protected(&rule->packets[0], 1409 pf_counter_u64_fetch(&old_rule->packets[0])); 1410 pf_counter_u64_rollup_protected(&rule->packets[1], 1411 pf_counter_u64_fetch(&old_rule->packets[1])); 1412 pf_counter_u64_rollup_protected(&rule->bytes[0], 1413 pf_counter_u64_fetch(&old_rule->bytes[0])); 1414 pf_counter_u64_rollup_protected(&rule->bytes[1], 1415 pf_counter_u64_fetch(&old_rule->bytes[1])); 1416 pf_counter_u64_critical_exit(); 1417 } 1418 } 1419 1420 rs->rules[rs_num].inactive.ptr = old_rules; 1421 rs->rules[rs_num].inactive.ptr_array = old_array; 1422 rs->rules[rs_num].inactive.tree = NULL; /* important for pf_ioctl_addrule */ 1423 rs->rules[rs_num].inactive.rcount = old_rcount; 1424 1425 rs->rules[rs_num].active.ticket = 1426 rs->rules[rs_num].inactive.ticket; 1427 pf_calc_skip_steps(rs->rules[rs_num].active.ptr); 1428 1429 /* Purge the old rule list. */ 1430 PF_UNLNKDRULES_LOCK(); 1431 while ((rule = TAILQ_FIRST(old_rules)) != NULL) 1432 pf_unlink_rule_locked(old_rules, rule); 1433 PF_UNLNKDRULES_UNLOCK(); 1434 if (rs->rules[rs_num].inactive.ptr_array) 1435 free(rs->rules[rs_num].inactive.ptr_array, M_TEMP); 1436 rs->rules[rs_num].inactive.ptr_array = NULL; 1437 rs->rules[rs_num].inactive.rcount = 0; 1438 rs->rules[rs_num].inactive.open = 0; 1439 pf_remove_if_empty_kruleset(rs); 1440 free(old_tree, M_TEMP); 1441 1442 return (0); 1443 } 1444 1445 static int 1446 pf_setup_pfsync_matching(struct pf_kruleset *rs) 1447 { 1448 MD5_CTX ctx; 1449 struct pf_krule *rule; 1450 int rs_cnt; 1451 u_int8_t digest[PF_MD5_DIGEST_LENGTH]; 1452 1453 MD5Init(&ctx); 1454 for (rs_cnt = 0; rs_cnt < PF_RULESET_MAX; rs_cnt++) { 1455 /* XXX PF_RULESET_SCRUB as well? */ 1456 if (rs_cnt == PF_RULESET_SCRUB) 1457 continue; 1458 1459 if (rs->rules[rs_cnt].inactive.ptr_array) 1460 free(rs->rules[rs_cnt].inactive.ptr_array, M_TEMP); 1461 rs->rules[rs_cnt].inactive.ptr_array = NULL; 1462 1463 if (rs->rules[rs_cnt].inactive.rcount) { 1464 rs->rules[rs_cnt].inactive.ptr_array = 1465 mallocarray(rs->rules[rs_cnt].inactive.rcount, 1466 sizeof(struct pf_rule **), 1467 M_TEMP, M_NOWAIT); 1468 1469 if (!rs->rules[rs_cnt].inactive.ptr_array) 1470 return (ENOMEM); 1471 } 1472 1473 TAILQ_FOREACH(rule, rs->rules[rs_cnt].inactive.ptr, 1474 entries) { 1475 pf_hash_rule_rolling(&ctx, rule); 1476 (rs->rules[rs_cnt].inactive.ptr_array)[rule->nr] = rule; 1477 } 1478 } 1479 1480 MD5Final(digest, &ctx); 1481 memcpy(V_pf_status.pf_chksum, digest, sizeof(V_pf_status.pf_chksum)); 1482 return (0); 1483 } 1484 1485 static int 1486 pf_eth_addr_setup(struct pf_keth_ruleset *ruleset, struct pf_addr_wrap *addr) 1487 { 1488 int error = 0; 1489 1490 switch (addr->type) { 1491 case PF_ADDR_TABLE: 1492 addr->p.tbl = pfr_eth_attach_table(ruleset, addr->v.tblname); 1493 if (addr->p.tbl == NULL) 1494 error = ENOMEM; 1495 break; 1496 default: 1497 error = EINVAL; 1498 } 1499 1500 return (error); 1501 } 1502 1503 static int 1504 pf_addr_setup(struct pf_kruleset *ruleset, struct pf_addr_wrap *addr, 1505 sa_family_t af) 1506 { 1507 int error = 0; 1508 1509 switch (addr->type) { 1510 case PF_ADDR_TABLE: 1511 addr->p.tbl = pfr_attach_table(ruleset, addr->v.tblname); 1512 if (addr->p.tbl == NULL) 1513 error = ENOMEM; 1514 break; 1515 case PF_ADDR_DYNIFTL: 1516 error = pfi_dynaddr_setup(addr, af); 1517 break; 1518 } 1519 1520 return (error); 1521 } 1522 1523 void 1524 pf_addr_copyout(struct pf_addr_wrap *addr) 1525 { 1526 1527 switch (addr->type) { 1528 case PF_ADDR_DYNIFTL: 1529 pfi_dynaddr_copyout(addr); 1530 break; 1531 case PF_ADDR_TABLE: 1532 pf_tbladdr_copyout(addr); 1533 break; 1534 } 1535 } 1536 1537 static void 1538 pf_src_node_copy(const struct pf_ksrc_node *in, struct pf_src_node *out) 1539 { 1540 int secs = time_uptime; 1541 1542 bzero(out, sizeof(struct pf_src_node)); 1543 1544 bcopy(&in->addr, &out->addr, sizeof(struct pf_addr)); 1545 bcopy(&in->raddr, &out->raddr, sizeof(struct pf_addr)); 1546 1547 if (in->rule != NULL) 1548 out->rule.nr = in->rule->nr; 1549 1550 for (int i = 0; i < 2; i++) { 1551 out->bytes[i] = counter_u64_fetch(in->bytes[i]); 1552 out->packets[i] = counter_u64_fetch(in->packets[i]); 1553 } 1554 1555 out->states = in->states; 1556 out->conn = in->conn; 1557 out->af = in->af; 1558 out->ruletype = in->ruletype; 1559 1560 out->creation = secs - in->creation; 1561 if (out->expire > secs) 1562 out->expire -= secs; 1563 else 1564 out->expire = 0; 1565 1566 /* Adjust the connection rate estimate. */ 1567 out->conn_rate.limit = in->conn_rate.limit; 1568 out->conn_rate.seconds = in->conn_rate.seconds; 1569 /* If there's no limit there's no counter_rate. */ 1570 if (in->conn_rate.cr != NULL) 1571 out->conn_rate.count = counter_rate_get(in->conn_rate.cr); 1572 } 1573 1574 #ifdef ALTQ 1575 /* 1576 * Handle export of struct pf_kaltq to user binaries that may be using any 1577 * version of struct pf_altq. 1578 */ 1579 static int 1580 pf_export_kaltq(struct pf_altq *q, struct pfioc_altq_v1 *pa, size_t ioc_size) 1581 { 1582 u_int32_t version; 1583 1584 if (ioc_size == sizeof(struct pfioc_altq_v0)) 1585 version = 0; 1586 else 1587 version = pa->version; 1588 1589 if (version > PFIOC_ALTQ_VERSION) 1590 return (EINVAL); 1591 1592 #define ASSIGN(x) exported_q->x = q->x 1593 #define COPY(x) \ 1594 bcopy(&q->x, &exported_q->x, min(sizeof(q->x), sizeof(exported_q->x))) 1595 #define SATU16(x) (u_int32_t)uqmin((x), USHRT_MAX) 1596 #define SATU32(x) (u_int32_t)uqmin((x), UINT_MAX) 1597 1598 switch (version) { 1599 case 0: { 1600 struct pf_altq_v0 *exported_q = 1601 &((struct pfioc_altq_v0 *)pa)->altq; 1602 1603 COPY(ifname); 1604 1605 ASSIGN(scheduler); 1606 ASSIGN(tbrsize); 1607 exported_q->tbrsize = SATU16(q->tbrsize); 1608 exported_q->ifbandwidth = SATU32(q->ifbandwidth); 1609 1610 COPY(qname); 1611 COPY(parent); 1612 ASSIGN(parent_qid); 1613 exported_q->bandwidth = SATU32(q->bandwidth); 1614 ASSIGN(priority); 1615 ASSIGN(local_flags); 1616 1617 ASSIGN(qlimit); 1618 ASSIGN(flags); 1619 1620 if (q->scheduler == ALTQT_HFSC) { 1621 #define ASSIGN_OPT(x) exported_q->pq_u.hfsc_opts.x = q->pq_u.hfsc_opts.x 1622 #define ASSIGN_OPT_SATU32(x) exported_q->pq_u.hfsc_opts.x = \ 1623 SATU32(q->pq_u.hfsc_opts.x) 1624 1625 ASSIGN_OPT_SATU32(rtsc_m1); 1626 ASSIGN_OPT(rtsc_d); 1627 ASSIGN_OPT_SATU32(rtsc_m2); 1628 1629 ASSIGN_OPT_SATU32(lssc_m1); 1630 ASSIGN_OPT(lssc_d); 1631 ASSIGN_OPT_SATU32(lssc_m2); 1632 1633 ASSIGN_OPT_SATU32(ulsc_m1); 1634 ASSIGN_OPT(ulsc_d); 1635 ASSIGN_OPT_SATU32(ulsc_m2); 1636 1637 ASSIGN_OPT(flags); 1638 1639 #undef ASSIGN_OPT 1640 #undef ASSIGN_OPT_SATU32 1641 } else 1642 COPY(pq_u); 1643 1644 ASSIGN(qid); 1645 break; 1646 } 1647 case 1: { 1648 struct pf_altq_v1 *exported_q = 1649 &((struct pfioc_altq_v1 *)pa)->altq; 1650 1651 COPY(ifname); 1652 1653 ASSIGN(scheduler); 1654 ASSIGN(tbrsize); 1655 ASSIGN(ifbandwidth); 1656 1657 COPY(qname); 1658 COPY(parent); 1659 ASSIGN(parent_qid); 1660 ASSIGN(bandwidth); 1661 ASSIGN(priority); 1662 ASSIGN(local_flags); 1663 1664 ASSIGN(qlimit); 1665 ASSIGN(flags); 1666 COPY(pq_u); 1667 1668 ASSIGN(qid); 1669 break; 1670 } 1671 default: 1672 panic("%s: unhandled struct pfioc_altq version", __func__); 1673 break; 1674 } 1675 1676 #undef ASSIGN 1677 #undef COPY 1678 #undef SATU16 1679 #undef SATU32 1680 1681 return (0); 1682 } 1683 1684 /* 1685 * Handle import to struct pf_kaltq of struct pf_altq from user binaries 1686 * that may be using any version of it. 1687 */ 1688 static int 1689 pf_import_kaltq(struct pfioc_altq_v1 *pa, struct pf_altq *q, size_t ioc_size) 1690 { 1691 u_int32_t version; 1692 1693 if (ioc_size == sizeof(struct pfioc_altq_v0)) 1694 version = 0; 1695 else 1696 version = pa->version; 1697 1698 if (version > PFIOC_ALTQ_VERSION) 1699 return (EINVAL); 1700 1701 #define ASSIGN(x) q->x = imported_q->x 1702 #define COPY(x) \ 1703 bcopy(&imported_q->x, &q->x, min(sizeof(imported_q->x), sizeof(q->x))) 1704 1705 switch (version) { 1706 case 0: { 1707 struct pf_altq_v0 *imported_q = 1708 &((struct pfioc_altq_v0 *)pa)->altq; 1709 1710 COPY(ifname); 1711 1712 ASSIGN(scheduler); 1713 ASSIGN(tbrsize); /* 16-bit -> 32-bit */ 1714 ASSIGN(ifbandwidth); /* 32-bit -> 64-bit */ 1715 1716 COPY(qname); 1717 COPY(parent); 1718 ASSIGN(parent_qid); 1719 ASSIGN(bandwidth); /* 32-bit -> 64-bit */ 1720 ASSIGN(priority); 1721 ASSIGN(local_flags); 1722 1723 ASSIGN(qlimit); 1724 ASSIGN(flags); 1725 1726 if (imported_q->scheduler == ALTQT_HFSC) { 1727 #define ASSIGN_OPT(x) q->pq_u.hfsc_opts.x = imported_q->pq_u.hfsc_opts.x 1728 1729 /* 1730 * The m1 and m2 parameters are being copied from 1731 * 32-bit to 64-bit. 1732 */ 1733 ASSIGN_OPT(rtsc_m1); 1734 ASSIGN_OPT(rtsc_d); 1735 ASSIGN_OPT(rtsc_m2); 1736 1737 ASSIGN_OPT(lssc_m1); 1738 ASSIGN_OPT(lssc_d); 1739 ASSIGN_OPT(lssc_m2); 1740 1741 ASSIGN_OPT(ulsc_m1); 1742 ASSIGN_OPT(ulsc_d); 1743 ASSIGN_OPT(ulsc_m2); 1744 1745 ASSIGN_OPT(flags); 1746 1747 #undef ASSIGN_OPT 1748 } else 1749 COPY(pq_u); 1750 1751 ASSIGN(qid); 1752 break; 1753 } 1754 case 1: { 1755 struct pf_altq_v1 *imported_q = 1756 &((struct pfioc_altq_v1 *)pa)->altq; 1757 1758 COPY(ifname); 1759 1760 ASSIGN(scheduler); 1761 ASSIGN(tbrsize); 1762 ASSIGN(ifbandwidth); 1763 1764 COPY(qname); 1765 COPY(parent); 1766 ASSIGN(parent_qid); 1767 ASSIGN(bandwidth); 1768 ASSIGN(priority); 1769 ASSIGN(local_flags); 1770 1771 ASSIGN(qlimit); 1772 ASSIGN(flags); 1773 COPY(pq_u); 1774 1775 ASSIGN(qid); 1776 break; 1777 } 1778 default: 1779 panic("%s: unhandled struct pfioc_altq version", __func__); 1780 break; 1781 } 1782 1783 #undef ASSIGN 1784 #undef COPY 1785 1786 return (0); 1787 } 1788 1789 static struct pf_altq * 1790 pf_altq_get_nth_active(u_int32_t n) 1791 { 1792 struct pf_altq *altq; 1793 u_int32_t nr; 1794 1795 nr = 0; 1796 TAILQ_FOREACH(altq, V_pf_altq_ifs_active, entries) { 1797 if (nr == n) 1798 return (altq); 1799 nr++; 1800 } 1801 1802 TAILQ_FOREACH(altq, V_pf_altqs_active, entries) { 1803 if (nr == n) 1804 return (altq); 1805 nr++; 1806 } 1807 1808 return (NULL); 1809 } 1810 #endif /* ALTQ */ 1811 1812 struct pf_krule * 1813 pf_krule_alloc(void) 1814 { 1815 struct pf_krule *rule; 1816 1817 rule = malloc(sizeof(struct pf_krule), M_PFRULE, M_WAITOK | M_ZERO); 1818 mtx_init(&rule->nat.mtx, "pf_krule_nat_pool", NULL, MTX_DEF); 1819 mtx_init(&rule->rdr.mtx, "pf_krule_rdr_pool", NULL, MTX_DEF); 1820 mtx_init(&rule->route.mtx, "pf_krule_route_pool", NULL, MTX_DEF); 1821 rule->timestamp = uma_zalloc_pcpu(pf_timestamp_pcpu_zone, 1822 M_WAITOK | M_ZERO); 1823 return (rule); 1824 } 1825 1826 void 1827 pf_krule_free(struct pf_krule *rule) 1828 { 1829 #ifdef PF_WANT_32_TO_64_COUNTER 1830 bool wowned; 1831 #endif 1832 1833 if (rule == NULL) 1834 return; 1835 1836 #ifdef PF_WANT_32_TO_64_COUNTER 1837 if (rule->allrulelinked) { 1838 wowned = PF_RULES_WOWNED(); 1839 if (!wowned) 1840 PF_RULES_WLOCK(); 1841 LIST_REMOVE(rule, allrulelist); 1842 V_pf_allrulecount--; 1843 if (!wowned) 1844 PF_RULES_WUNLOCK(); 1845 } 1846 #endif 1847 1848 pf_counter_u64_deinit(&rule->evaluations); 1849 for (int i = 0; i < 2; i++) { 1850 pf_counter_u64_deinit(&rule->packets[i]); 1851 pf_counter_u64_deinit(&rule->bytes[i]); 1852 } 1853 counter_u64_free(rule->states_cur); 1854 counter_u64_free(rule->states_tot); 1855 for (pf_sn_types_t sn_type=0; sn_type<PF_SN_MAX; sn_type++) 1856 counter_u64_free(rule->src_nodes[sn_type]); 1857 uma_zfree_pcpu(pf_timestamp_pcpu_zone, rule->timestamp); 1858 1859 mtx_destroy(&rule->nat.mtx); 1860 mtx_destroy(&rule->rdr.mtx); 1861 mtx_destroy(&rule->route.mtx); 1862 free(rule, M_PFRULE); 1863 } 1864 1865 void 1866 pf_krule_clear_counters(struct pf_krule *rule) 1867 { 1868 pf_counter_u64_zero(&rule->evaluations); 1869 for (int i = 0; i < 2; i++) { 1870 pf_counter_u64_zero(&rule->packets[i]); 1871 pf_counter_u64_zero(&rule->bytes[i]); 1872 } 1873 counter_u64_zero(rule->states_tot); 1874 } 1875 1876 static void 1877 pf_kpooladdr_to_pooladdr(const struct pf_kpooladdr *kpool, 1878 struct pf_pooladdr *pool) 1879 { 1880 1881 bzero(pool, sizeof(*pool)); 1882 bcopy(&kpool->addr, &pool->addr, sizeof(pool->addr)); 1883 strlcpy(pool->ifname, kpool->ifname, sizeof(pool->ifname)); 1884 } 1885 1886 static int 1887 pf_pooladdr_to_kpooladdr(const struct pf_pooladdr *pool, 1888 struct pf_kpooladdr *kpool) 1889 { 1890 int ret; 1891 1892 bzero(kpool, sizeof(*kpool)); 1893 bcopy(&pool->addr, &kpool->addr, sizeof(kpool->addr)); 1894 ret = pf_user_strcpy(kpool->ifname, pool->ifname, 1895 sizeof(kpool->ifname)); 1896 return (ret); 1897 } 1898 1899 static void 1900 pf_pool_to_kpool(const struct pf_pool *pool, struct pf_kpool *kpool) 1901 { 1902 _Static_assert(sizeof(pool->key) == sizeof(kpool->key), ""); 1903 _Static_assert(sizeof(pool->counter) == sizeof(kpool->counter), ""); 1904 1905 bcopy(&pool->key, &kpool->key, sizeof(kpool->key)); 1906 bcopy(&pool->counter, &kpool->counter, sizeof(kpool->counter)); 1907 1908 kpool->tblidx = pool->tblidx; 1909 kpool->proxy_port[0] = pool->proxy_port[0]; 1910 kpool->proxy_port[1] = pool->proxy_port[1]; 1911 kpool->opts = pool->opts; 1912 } 1913 1914 static int 1915 pf_rule_to_krule(const struct pf_rule *rule, struct pf_krule *krule) 1916 { 1917 int ret; 1918 1919 #ifndef INET 1920 if (rule->af == AF_INET) { 1921 return (EAFNOSUPPORT); 1922 } 1923 #endif /* INET */ 1924 #ifndef INET6 1925 if (rule->af == AF_INET6) { 1926 return (EAFNOSUPPORT); 1927 } 1928 #endif /* INET6 */ 1929 1930 ret = pf_check_rule_addr(&rule->src); 1931 if (ret != 0) 1932 return (ret); 1933 ret = pf_check_rule_addr(&rule->dst); 1934 if (ret != 0) 1935 return (ret); 1936 1937 bcopy(&rule->src, &krule->src, sizeof(rule->src)); 1938 bcopy(&rule->dst, &krule->dst, sizeof(rule->dst)); 1939 1940 ret = pf_user_strcpy(krule->label[0], rule->label, sizeof(rule->label)); 1941 if (ret != 0) 1942 return (ret); 1943 ret = pf_user_strcpy(krule->ifname, rule->ifname, sizeof(rule->ifname)); 1944 if (ret != 0) 1945 return (ret); 1946 ret = pf_user_strcpy(krule->qname, rule->qname, sizeof(rule->qname)); 1947 if (ret != 0) 1948 return (ret); 1949 ret = pf_user_strcpy(krule->pqname, rule->pqname, sizeof(rule->pqname)); 1950 if (ret != 0) 1951 return (ret); 1952 ret = pf_user_strcpy(krule->tagname, rule->tagname, 1953 sizeof(rule->tagname)); 1954 if (ret != 0) 1955 return (ret); 1956 ret = pf_user_strcpy(krule->match_tagname, rule->match_tagname, 1957 sizeof(rule->match_tagname)); 1958 if (ret != 0) 1959 return (ret); 1960 ret = pf_user_strcpy(krule->overload_tblname, rule->overload_tblname, 1961 sizeof(rule->overload_tblname)); 1962 if (ret != 0) 1963 return (ret); 1964 1965 pf_pool_to_kpool(&rule->rpool, &krule->rdr); 1966 1967 /* Don't allow userspace to set evaluations, packets or bytes. */ 1968 /* kif, anchor, overload_tbl are not copied over. */ 1969 1970 krule->os_fingerprint = rule->os_fingerprint; 1971 1972 krule->rtableid = rule->rtableid; 1973 /* pf_rule->timeout is smaller than pf_krule->timeout */ 1974 bcopy(rule->timeout, krule->timeout, sizeof(rule->timeout)); 1975 krule->max_states = rule->max_states; 1976 krule->max_src_nodes = rule->max_src_nodes; 1977 krule->max_src_states = rule->max_src_states; 1978 krule->max_src_conn = rule->max_src_conn; 1979 krule->max_src_conn_rate.limit = rule->max_src_conn_rate.limit; 1980 krule->max_src_conn_rate.seconds = rule->max_src_conn_rate.seconds; 1981 krule->qid = rule->qid; 1982 krule->pqid = rule->pqid; 1983 krule->nr = rule->nr; 1984 krule->prob = rule->prob; 1985 krule->cuid = rule->cuid; 1986 krule->cpid = rule->cpid; 1987 1988 krule->return_icmp = rule->return_icmp; 1989 krule->return_icmp6 = rule->return_icmp6; 1990 krule->max_mss = rule->max_mss; 1991 krule->tag = rule->tag; 1992 krule->match_tag = rule->match_tag; 1993 krule->scrub_flags = rule->scrub_flags; 1994 1995 bcopy(&rule->uid, &krule->uid, sizeof(krule->uid)); 1996 bcopy(&rule->gid, &krule->gid, sizeof(krule->gid)); 1997 1998 krule->rule_flag = rule->rule_flag; 1999 krule->action = rule->action; 2000 krule->direction = rule->direction; 2001 krule->log = rule->log; 2002 krule->logif = rule->logif; 2003 krule->quick = rule->quick; 2004 krule->ifnot = rule->ifnot; 2005 krule->match_tag_not = rule->match_tag_not; 2006 krule->natpass = rule->natpass; 2007 2008 krule->keep_state = rule->keep_state; 2009 krule->af = rule->af; 2010 krule->proto = rule->proto; 2011 krule->type = rule->type; 2012 krule->code = rule->code; 2013 krule->flags = rule->flags; 2014 krule->flagset = rule->flagset; 2015 krule->min_ttl = rule->min_ttl; 2016 krule->allow_opts = rule->allow_opts; 2017 krule->rt = rule->rt; 2018 krule->return_ttl = rule->return_ttl; 2019 krule->tos = rule->tos; 2020 krule->set_tos = rule->set_tos; 2021 2022 krule->flush = rule->flush; 2023 krule->prio = rule->prio; 2024 krule->set_prio[0] = rule->set_prio[0]; 2025 krule->set_prio[1] = rule->set_prio[1]; 2026 2027 bcopy(&rule->divert, &krule->divert, sizeof(krule->divert)); 2028 2029 return (0); 2030 } 2031 2032 int 2033 pf_ioctl_getrules(struct pfioc_rule *pr) 2034 { 2035 struct pf_kruleset *ruleset; 2036 struct pf_krule *tail; 2037 int rs_num; 2038 2039 PF_RULES_WLOCK(); 2040 ruleset = pf_find_kruleset(pr->anchor); 2041 if (ruleset == NULL) { 2042 PF_RULES_WUNLOCK(); 2043 return (EINVAL); 2044 } 2045 rs_num = pf_get_ruleset_number(pr->rule.action); 2046 if (rs_num >= PF_RULESET_MAX) { 2047 PF_RULES_WUNLOCK(); 2048 return (EINVAL); 2049 } 2050 tail = TAILQ_LAST(ruleset->rules[rs_num].active.ptr, 2051 pf_krulequeue); 2052 if (tail) 2053 pr->nr = tail->nr + 1; 2054 else 2055 pr->nr = 0; 2056 pr->ticket = ruleset->rules[rs_num].active.ticket; 2057 PF_RULES_WUNLOCK(); 2058 2059 return (0); 2060 } 2061 2062 int 2063 pf_ioctl_addrule(struct pf_krule *rule, uint32_t ticket, 2064 uint32_t pool_ticket, const char *anchor, const char *anchor_call, 2065 uid_t uid, pid_t pid) 2066 { 2067 struct pf_kruleset *ruleset; 2068 struct pf_krule *tail; 2069 struct pf_kpooladdr *pa; 2070 struct pfi_kkif *kif = NULL, *rcv_kif = NULL; 2071 int rs_num; 2072 int error = 0; 2073 2074 if ((rule->return_icmp >> 8) > ICMP_MAXTYPE) { 2075 error = EINVAL; 2076 goto errout_unlocked; 2077 } 2078 2079 #define ERROUT(x) ERROUT_FUNCTION(errout, x) 2080 2081 if (rule->ifname[0]) 2082 kif = pf_kkif_create(M_WAITOK); 2083 if (rule->rcv_ifname[0]) 2084 rcv_kif = pf_kkif_create(M_WAITOK); 2085 pf_counter_u64_init(&rule->evaluations, M_WAITOK); 2086 for (int i = 0; i < 2; i++) { 2087 pf_counter_u64_init(&rule->packets[i], M_WAITOK); 2088 pf_counter_u64_init(&rule->bytes[i], M_WAITOK); 2089 } 2090 rule->states_cur = counter_u64_alloc(M_WAITOK); 2091 rule->states_tot = counter_u64_alloc(M_WAITOK); 2092 for (pf_sn_types_t sn_type=0; sn_type<PF_SN_MAX; sn_type++) 2093 rule->src_nodes[sn_type] = counter_u64_alloc(M_WAITOK); 2094 rule->cuid = uid; 2095 rule->cpid = pid; 2096 TAILQ_INIT(&rule->rdr.list); 2097 TAILQ_INIT(&rule->nat.list); 2098 TAILQ_INIT(&rule->route.list); 2099 2100 PF_CONFIG_LOCK(); 2101 PF_RULES_WLOCK(); 2102 #ifdef PF_WANT_32_TO_64_COUNTER 2103 LIST_INSERT_HEAD(&V_pf_allrulelist, rule, allrulelist); 2104 MPASS(!rule->allrulelinked); 2105 rule->allrulelinked = true; 2106 V_pf_allrulecount++; 2107 #endif 2108 ruleset = pf_find_kruleset(anchor); 2109 if (ruleset == NULL) 2110 ERROUT(EINVAL); 2111 rs_num = pf_get_ruleset_number(rule->action); 2112 if (rs_num >= PF_RULESET_MAX) 2113 ERROUT(EINVAL); 2114 if (ticket != ruleset->rules[rs_num].inactive.ticket) { 2115 DPFPRINTF(PF_DEBUG_MISC, 2116 ("ticket: %d != [%d]%d\n", ticket, rs_num, 2117 ruleset->rules[rs_num].inactive.ticket)); 2118 ERROUT(EBUSY); 2119 } 2120 if (pool_ticket != V_ticket_pabuf) { 2121 DPFPRINTF(PF_DEBUG_MISC, 2122 ("pool_ticket: %d != %d\n", pool_ticket, 2123 V_ticket_pabuf)); 2124 ERROUT(EBUSY); 2125 } 2126 /* 2127 * XXXMJG hack: there is no mechanism to ensure they started the 2128 * transaction. Ticket checked above may happen to match by accident, 2129 * even if nobody called DIOCXBEGIN, let alone this process. 2130 * Partially work around it by checking if the RB tree got allocated, 2131 * see pf_begin_rules. 2132 */ 2133 if (ruleset->rules[rs_num].inactive.tree == NULL) { 2134 ERROUT(EINVAL); 2135 } 2136 2137 tail = TAILQ_LAST(ruleset->rules[rs_num].inactive.ptr, 2138 pf_krulequeue); 2139 if (tail) 2140 rule->nr = tail->nr + 1; 2141 else 2142 rule->nr = 0; 2143 if (rule->ifname[0]) { 2144 rule->kif = pfi_kkif_attach(kif, rule->ifname); 2145 kif = NULL; 2146 pfi_kkif_ref(rule->kif); 2147 } else 2148 rule->kif = NULL; 2149 2150 if (rule->rcv_ifname[0]) { 2151 rule->rcv_kif = pfi_kkif_attach(rcv_kif, rule->rcv_ifname); 2152 rcv_kif = NULL; 2153 pfi_kkif_ref(rule->rcv_kif); 2154 } else 2155 rule->rcv_kif = NULL; 2156 2157 if (rule->rtableid > 0 && rule->rtableid >= rt_numfibs) 2158 error = EBUSY; 2159 #ifdef ALTQ 2160 /* set queue IDs */ 2161 if (rule->qname[0] != 0) { 2162 if ((rule->qid = pf_qname2qid(rule->qname)) == 0) 2163 error = EBUSY; 2164 else if (rule->pqname[0] != 0) { 2165 if ((rule->pqid = 2166 pf_qname2qid(rule->pqname)) == 0) 2167 error = EBUSY; 2168 } else 2169 rule->pqid = rule->qid; 2170 } 2171 #endif 2172 if (rule->tagname[0]) 2173 if ((rule->tag = pf_tagname2tag(rule->tagname)) == 0) 2174 error = EBUSY; 2175 if (rule->match_tagname[0]) 2176 if ((rule->match_tag = 2177 pf_tagname2tag(rule->match_tagname)) == 0) 2178 error = EBUSY; 2179 if (rule->rt && !rule->direction) 2180 error = EINVAL; 2181 if (!rule->log) 2182 rule->logif = 0; 2183 if (! pf_init_threshold(&rule->pktrate, rule->pktrate.limit, 2184 rule->pktrate.seconds)) 2185 error = ENOMEM; 2186 if (pf_addr_setup(ruleset, &rule->src.addr, rule->af)) 2187 error = ENOMEM; 2188 if (pf_addr_setup(ruleset, &rule->dst.addr, rule->af)) 2189 error = ENOMEM; 2190 if (pf_kanchor_setup(rule, ruleset, anchor_call)) 2191 error = EINVAL; 2192 if (rule->scrub_flags & PFSTATE_SETPRIO && 2193 (rule->set_prio[0] > PF_PRIO_MAX || 2194 rule->set_prio[1] > PF_PRIO_MAX)) 2195 error = EINVAL; 2196 for (int i = 0; i < 3; i++) { 2197 TAILQ_FOREACH(pa, &V_pf_pabuf[i], entries) 2198 if (pa->addr.type == PF_ADDR_TABLE) { 2199 pa->addr.p.tbl = pfr_attach_table(ruleset, 2200 pa->addr.v.tblname); 2201 if (pa->addr.p.tbl == NULL) 2202 error = ENOMEM; 2203 } 2204 } 2205 2206 rule->overload_tbl = NULL; 2207 if (rule->overload_tblname[0]) { 2208 if ((rule->overload_tbl = pfr_attach_table(ruleset, 2209 rule->overload_tblname)) == NULL) 2210 error = EINVAL; 2211 else 2212 rule->overload_tbl->pfrkt_flags |= 2213 PFR_TFLAG_ACTIVE; 2214 } 2215 2216 pf_mv_kpool(&V_pf_pabuf[0], &rule->nat.list); 2217 2218 /* 2219 * Old version of pfctl provide route redirection pools in single 2220 * common redirection pool rdr. New versions use rdr only for 2221 * rdr-to rules. 2222 */ 2223 if (rule->rt > PF_NOPFROUTE && TAILQ_EMPTY(&V_pf_pabuf[2])) { 2224 pf_mv_kpool(&V_pf_pabuf[1], &rule->route.list); 2225 } else { 2226 pf_mv_kpool(&V_pf_pabuf[1], &rule->rdr.list); 2227 pf_mv_kpool(&V_pf_pabuf[2], &rule->route.list); 2228 } 2229 2230 if (((rule->action == PF_NAT) || (rule->action == PF_RDR) || 2231 (rule->action == PF_BINAT)) && rule->anchor == NULL && 2232 TAILQ_FIRST(&rule->rdr.list) == NULL) { 2233 error = EINVAL; 2234 } 2235 2236 if (rule->rt > PF_NOPFROUTE && (TAILQ_FIRST(&rule->route.list) == NULL)) { 2237 error = EINVAL; 2238 } 2239 2240 if (rule->action == PF_PASS && (rule->rdr.opts & PF_POOL_STICKYADDR || 2241 rule->nat.opts & PF_POOL_STICKYADDR) && !rule->keep_state) { 2242 error = EINVAL; 2243 } 2244 2245 if (error) { 2246 pf_free_rule(rule); 2247 rule = NULL; 2248 ERROUT(error); 2249 } 2250 2251 rule->nat.cur = TAILQ_FIRST(&rule->nat.list); 2252 rule->rdr.cur = TAILQ_FIRST(&rule->rdr.list); 2253 rule->route.cur = TAILQ_FIRST(&rule->route.list); 2254 TAILQ_INSERT_TAIL(ruleset->rules[rs_num].inactive.ptr, 2255 rule, entries); 2256 ruleset->rules[rs_num].inactive.rcount++; 2257 2258 PF_RULES_WUNLOCK(); 2259 pf_hash_rule(rule); 2260 if (RB_INSERT(pf_krule_global, ruleset->rules[rs_num].inactive.tree, rule) != NULL) { 2261 PF_RULES_WLOCK(); 2262 TAILQ_REMOVE(ruleset->rules[rs_num].inactive.ptr, rule, entries); 2263 ruleset->rules[rs_num].inactive.rcount--; 2264 pf_free_rule(rule); 2265 rule = NULL; 2266 ERROUT(EEXIST); 2267 } 2268 PF_CONFIG_UNLOCK(); 2269 2270 return (0); 2271 2272 #undef ERROUT 2273 errout: 2274 PF_RULES_WUNLOCK(); 2275 PF_CONFIG_UNLOCK(); 2276 errout_unlocked: 2277 pf_kkif_free(rcv_kif); 2278 pf_kkif_free(kif); 2279 pf_krule_free(rule); 2280 return (error); 2281 } 2282 2283 static bool 2284 pf_label_match(const struct pf_krule *rule, const char *label) 2285 { 2286 int i = 0; 2287 2288 while (*rule->label[i]) { 2289 if (strcmp(rule->label[i], label) == 0) 2290 return (true); 2291 i++; 2292 } 2293 2294 return (false); 2295 } 2296 2297 static unsigned int 2298 pf_kill_matching_state(struct pf_state_key_cmp *key, int dir) 2299 { 2300 struct pf_kstate *s; 2301 int more = 0; 2302 2303 s = pf_find_state_all(key, dir, &more); 2304 if (s == NULL) 2305 return (0); 2306 2307 if (more) { 2308 PF_STATE_UNLOCK(s); 2309 return (0); 2310 } 2311 2312 pf_remove_state(s); 2313 return (1); 2314 } 2315 2316 static int 2317 pf_killstates_row(struct pf_kstate_kill *psk, struct pf_idhash *ih) 2318 { 2319 struct pf_kstate *s; 2320 struct pf_state_key *sk; 2321 struct pf_addr *srcaddr, *dstaddr; 2322 struct pf_state_key_cmp match_key; 2323 int idx, killed = 0; 2324 unsigned int dir; 2325 u_int16_t srcport, dstport; 2326 struct pfi_kkif *kif; 2327 2328 relock_DIOCKILLSTATES: 2329 PF_HASHROW_LOCK(ih); 2330 LIST_FOREACH(s, &ih->states, entry) { 2331 /* For floating states look at the original kif. */ 2332 kif = s->kif == V_pfi_all ? s->orig_kif : s->kif; 2333 2334 sk = s->key[psk->psk_nat ? PF_SK_STACK : PF_SK_WIRE]; 2335 if (s->direction == PF_OUT) { 2336 srcaddr = &sk->addr[1]; 2337 dstaddr = &sk->addr[0]; 2338 srcport = sk->port[1]; 2339 dstport = sk->port[0]; 2340 } else { 2341 srcaddr = &sk->addr[0]; 2342 dstaddr = &sk->addr[1]; 2343 srcport = sk->port[0]; 2344 dstport = sk->port[1]; 2345 } 2346 2347 if (psk->psk_af && sk->af != psk->psk_af) 2348 continue; 2349 2350 if (psk->psk_proto && psk->psk_proto != sk->proto) 2351 continue; 2352 2353 if (! PF_MATCHA(psk->psk_src.neg, &psk->psk_src.addr.v.a.addr, 2354 &psk->psk_src.addr.v.a.mask, srcaddr, sk->af)) 2355 continue; 2356 2357 if (! PF_MATCHA(psk->psk_dst.neg, &psk->psk_dst.addr.v.a.addr, 2358 &psk->psk_dst.addr.v.a.mask, dstaddr, sk->af)) 2359 continue; 2360 2361 if (! PF_MATCHA(psk->psk_rt_addr.neg, 2362 &psk->psk_rt_addr.addr.v.a.addr, 2363 &psk->psk_rt_addr.addr.v.a.mask, 2364 &s->act.rt_addr, sk->af)) 2365 continue; 2366 2367 if (psk->psk_src.port_op != 0 && 2368 ! pf_match_port(psk->psk_src.port_op, 2369 psk->psk_src.port[0], psk->psk_src.port[1], srcport)) 2370 continue; 2371 2372 if (psk->psk_dst.port_op != 0 && 2373 ! pf_match_port(psk->psk_dst.port_op, 2374 psk->psk_dst.port[0], psk->psk_dst.port[1], dstport)) 2375 continue; 2376 2377 if (psk->psk_label[0] && 2378 ! pf_label_match(s->rule, psk->psk_label)) 2379 continue; 2380 2381 if (psk->psk_ifname[0] && strcmp(psk->psk_ifname, 2382 kif->pfik_name)) 2383 continue; 2384 2385 if (psk->psk_kill_match) { 2386 /* Create the key to find matching states, with lock 2387 * held. */ 2388 2389 bzero(&match_key, sizeof(match_key)); 2390 2391 if (s->direction == PF_OUT) { 2392 dir = PF_IN; 2393 idx = psk->psk_nat ? PF_SK_WIRE : PF_SK_STACK; 2394 } else { 2395 dir = PF_OUT; 2396 idx = psk->psk_nat ? PF_SK_STACK : PF_SK_WIRE; 2397 } 2398 2399 match_key.af = s->key[idx]->af; 2400 match_key.proto = s->key[idx]->proto; 2401 PF_ACPY(&match_key.addr[0], 2402 &s->key[idx]->addr[1], match_key.af); 2403 match_key.port[0] = s->key[idx]->port[1]; 2404 PF_ACPY(&match_key.addr[1], 2405 &s->key[idx]->addr[0], match_key.af); 2406 match_key.port[1] = s->key[idx]->port[0]; 2407 } 2408 2409 pf_remove_state(s); 2410 killed++; 2411 2412 if (psk->psk_kill_match) 2413 killed += pf_kill_matching_state(&match_key, dir); 2414 2415 goto relock_DIOCKILLSTATES; 2416 } 2417 PF_HASHROW_UNLOCK(ih); 2418 2419 return (killed); 2420 } 2421 2422 void 2423 unhandled_af(int af) 2424 { 2425 panic("unhandled af %d", af); 2426 } 2427 2428 int 2429 pf_start(void) 2430 { 2431 int error = 0; 2432 2433 sx_xlock(&V_pf_ioctl_lock); 2434 if (V_pf_status.running) 2435 error = EEXIST; 2436 else { 2437 hook_pf(); 2438 if (! TAILQ_EMPTY(V_pf_keth->active.rules)) 2439 hook_pf_eth(); 2440 V_pf_status.running = 1; 2441 V_pf_status.since = time_uptime; 2442 new_unrhdr64(&V_pf_stateid, time_second); 2443 2444 DPFPRINTF(PF_DEBUG_MISC, ("pf: started\n")); 2445 } 2446 sx_xunlock(&V_pf_ioctl_lock); 2447 2448 return (error); 2449 } 2450 2451 int 2452 pf_stop(void) 2453 { 2454 int error = 0; 2455 2456 sx_xlock(&V_pf_ioctl_lock); 2457 if (!V_pf_status.running) 2458 error = ENOENT; 2459 else { 2460 V_pf_status.running = 0; 2461 dehook_pf(); 2462 dehook_pf_eth(); 2463 V_pf_status.since = time_uptime; 2464 DPFPRINTF(PF_DEBUG_MISC, ("pf: stopped\n")); 2465 } 2466 sx_xunlock(&V_pf_ioctl_lock); 2467 2468 return (error); 2469 } 2470 2471 void 2472 pf_ioctl_clear_status(void) 2473 { 2474 PF_RULES_WLOCK(); 2475 for (int i = 0; i < PFRES_MAX; i++) 2476 counter_u64_zero(V_pf_status.counters[i]); 2477 for (int i = 0; i < FCNT_MAX; i++) 2478 pf_counter_u64_zero(&V_pf_status.fcounters[i]); 2479 for (int i = 0; i < SCNT_MAX; i++) 2480 counter_u64_zero(V_pf_status.scounters[i]); 2481 for (int i = 0; i < KLCNT_MAX; i++) 2482 counter_u64_zero(V_pf_status.lcounters[i]); 2483 V_pf_status.since = time_uptime; 2484 if (*V_pf_status.ifname) 2485 pfi_update_status(V_pf_status.ifname, NULL); 2486 PF_RULES_WUNLOCK(); 2487 } 2488 2489 int 2490 pf_ioctl_set_timeout(int timeout, int seconds, int *prev_seconds) 2491 { 2492 uint32_t old; 2493 2494 if (timeout < 0 || timeout >= PFTM_MAX || 2495 seconds < 0) 2496 return (EINVAL); 2497 2498 PF_RULES_WLOCK(); 2499 old = V_pf_default_rule.timeout[timeout]; 2500 if (timeout == PFTM_INTERVAL && seconds == 0) 2501 seconds = 1; 2502 V_pf_default_rule.timeout[timeout] = seconds; 2503 if (timeout == PFTM_INTERVAL && seconds < old) 2504 wakeup(pf_purge_thread); 2505 2506 if (prev_seconds != NULL) 2507 *prev_seconds = old; 2508 2509 PF_RULES_WUNLOCK(); 2510 2511 return (0); 2512 } 2513 2514 int 2515 pf_ioctl_get_timeout(int timeout, int *seconds) 2516 { 2517 PF_RULES_RLOCK_TRACKER; 2518 2519 if (timeout < 0 || timeout >= PFTM_MAX) 2520 return (EINVAL); 2521 2522 PF_RULES_RLOCK(); 2523 *seconds = V_pf_default_rule.timeout[timeout]; 2524 PF_RULES_RUNLOCK(); 2525 2526 return (0); 2527 } 2528 2529 int 2530 pf_ioctl_set_limit(int index, unsigned int limit, unsigned int *old_limit) 2531 { 2532 2533 PF_RULES_WLOCK(); 2534 if (index < 0 || index >= PF_LIMIT_MAX || 2535 V_pf_limits[index].zone == NULL) { 2536 PF_RULES_WUNLOCK(); 2537 return (EINVAL); 2538 } 2539 uma_zone_set_max(V_pf_limits[index].zone, 2540 limit == 0 ? INT_MAX : limit); 2541 if (old_limit != NULL) 2542 *old_limit = V_pf_limits[index].limit; 2543 V_pf_limits[index].limit = limit; 2544 PF_RULES_WUNLOCK(); 2545 2546 return (0); 2547 } 2548 2549 int 2550 pf_ioctl_get_limit(int index, unsigned int *limit) 2551 { 2552 PF_RULES_RLOCK_TRACKER; 2553 2554 if (index < 0 || index >= PF_LIMIT_MAX) 2555 return (EINVAL); 2556 2557 PF_RULES_RLOCK(); 2558 *limit = V_pf_limits[index].limit; 2559 PF_RULES_RUNLOCK(); 2560 2561 return (0); 2562 } 2563 2564 int 2565 pf_ioctl_begin_addrs(uint32_t *ticket) 2566 { 2567 PF_RULES_WLOCK(); 2568 pf_empty_kpool(&V_pf_pabuf[0]); 2569 pf_empty_kpool(&V_pf_pabuf[1]); 2570 pf_empty_kpool(&V_pf_pabuf[2]); 2571 *ticket = ++V_ticket_pabuf; 2572 PF_RULES_WUNLOCK(); 2573 2574 return (0); 2575 } 2576 2577 int 2578 pf_ioctl_add_addr(struct pf_nl_pooladdr *pp) 2579 { 2580 struct pf_kpooladdr *pa = NULL; 2581 struct pfi_kkif *kif = NULL; 2582 int error; 2583 2584 if (pp->which != PF_RDR && pp->which != PF_NAT && 2585 pp->which != PF_RT) 2586 return (EINVAL); 2587 2588 switch (pp->af) { 2589 #ifdef INET 2590 case AF_INET: 2591 /* FALLTHROUGH */ 2592 #endif /* INET */ 2593 #ifdef INET6 2594 case AF_INET6: 2595 /* FALLTHROUGH */ 2596 #endif /* INET6 */ 2597 case AF_UNSPEC: 2598 break; 2599 default: 2600 return (EAFNOSUPPORT); 2601 } 2602 2603 if (pp->addr.addr.type != PF_ADDR_ADDRMASK && 2604 pp->addr.addr.type != PF_ADDR_DYNIFTL && 2605 pp->addr.addr.type != PF_ADDR_TABLE) 2606 return (EINVAL); 2607 2608 if (pp->addr.addr.p.dyn != NULL) 2609 return (EINVAL); 2610 2611 pa = malloc(sizeof(*pa), M_PFRULE, M_WAITOK); 2612 error = pf_pooladdr_to_kpooladdr(&pp->addr, pa); 2613 if (error != 0) 2614 goto out; 2615 if (pa->ifname[0]) 2616 kif = pf_kkif_create(M_WAITOK); 2617 PF_RULES_WLOCK(); 2618 if (pp->ticket != V_ticket_pabuf) { 2619 PF_RULES_WUNLOCK(); 2620 if (pa->ifname[0]) 2621 pf_kkif_free(kif); 2622 error = EBUSY; 2623 goto out; 2624 } 2625 if (pa->ifname[0]) { 2626 pa->kif = pfi_kkif_attach(kif, pa->ifname); 2627 kif = NULL; 2628 pfi_kkif_ref(pa->kif); 2629 } else 2630 pa->kif = NULL; 2631 if (pa->addr.type == PF_ADDR_DYNIFTL && ((error = 2632 pfi_dynaddr_setup(&pa->addr, pp->af)) != 0)) { 2633 if (pa->ifname[0]) 2634 pfi_kkif_unref(pa->kif); 2635 PF_RULES_WUNLOCK(); 2636 goto out; 2637 } 2638 switch (pp->which) { 2639 case PF_NAT: 2640 TAILQ_INSERT_TAIL(&V_pf_pabuf[0], pa, entries); 2641 break; 2642 case PF_RDR: 2643 TAILQ_INSERT_TAIL(&V_pf_pabuf[1], pa, entries); 2644 break; 2645 case PF_RT: 2646 TAILQ_INSERT_TAIL(&V_pf_pabuf[2], pa, entries); 2647 break; 2648 } 2649 PF_RULES_WUNLOCK(); 2650 2651 return (0); 2652 2653 out: 2654 free(pa, M_PFRULE); 2655 return (error); 2656 } 2657 2658 int 2659 pf_ioctl_get_addrs(struct pf_nl_pooladdr *pp) 2660 { 2661 struct pf_kpool *pool; 2662 struct pf_kpooladdr *pa; 2663 2664 PF_RULES_RLOCK_TRACKER; 2665 2666 if (pp->which != PF_RDR && pp->which != PF_NAT && 2667 pp->which != PF_RT) 2668 return (EINVAL); 2669 2670 pp->anchor[sizeof(pp->anchor) - 1] = 0; 2671 pp->nr = 0; 2672 2673 PF_RULES_RLOCK(); 2674 pool = pf_get_kpool(pp->anchor, pp->ticket, pp->r_action, 2675 pp->r_num, 0, 1, 0, pp->which); 2676 if (pool == NULL) { 2677 PF_RULES_RUNLOCK(); 2678 return (EBUSY); 2679 } 2680 TAILQ_FOREACH(pa, &pool->list, entries) 2681 pp->nr++; 2682 PF_RULES_RUNLOCK(); 2683 2684 return (0); 2685 } 2686 2687 int 2688 pf_ioctl_get_addr(struct pf_nl_pooladdr *pp) 2689 { 2690 struct pf_kpool *pool; 2691 struct pf_kpooladdr *pa; 2692 u_int32_t nr = 0; 2693 2694 if (pp->which != PF_RDR && pp->which != PF_NAT && 2695 pp->which != PF_RT) 2696 return (EINVAL); 2697 2698 PF_RULES_RLOCK_TRACKER; 2699 2700 pp->anchor[sizeof(pp->anchor) - 1] = 0; 2701 2702 PF_RULES_RLOCK(); 2703 pool = pf_get_kpool(pp->anchor, pp->ticket, pp->r_action, 2704 pp->r_num, 0, 1, 1, pp->which); 2705 if (pool == NULL) { 2706 PF_RULES_RUNLOCK(); 2707 return (EBUSY); 2708 } 2709 pa = TAILQ_FIRST(&pool->list); 2710 while ((pa != NULL) && (nr < pp->nr)) { 2711 pa = TAILQ_NEXT(pa, entries); 2712 nr++; 2713 } 2714 if (pa == NULL) { 2715 PF_RULES_RUNLOCK(); 2716 return (EBUSY); 2717 } 2718 pf_kpooladdr_to_pooladdr(pa, &pp->addr); 2719 pf_addr_copyout(&pp->addr.addr); 2720 PF_RULES_RUNLOCK(); 2721 2722 return (0); 2723 } 2724 2725 int 2726 pf_ioctl_get_rulesets(struct pfioc_ruleset *pr) 2727 { 2728 struct pf_kruleset *ruleset; 2729 struct pf_kanchor *anchor; 2730 2731 PF_RULES_RLOCK_TRACKER; 2732 2733 pr->path[sizeof(pr->path) - 1] = 0; 2734 2735 PF_RULES_RLOCK(); 2736 if ((ruleset = pf_find_kruleset(pr->path)) == NULL) { 2737 PF_RULES_RUNLOCK(); 2738 return (ENOENT); 2739 } 2740 pr->nr = 0; 2741 if (ruleset->anchor == NULL) { 2742 /* XXX kludge for pf_main_ruleset */ 2743 RB_FOREACH(anchor, pf_kanchor_global, &V_pf_anchors) 2744 if (anchor->parent == NULL) 2745 pr->nr++; 2746 } else { 2747 RB_FOREACH(anchor, pf_kanchor_node, 2748 &ruleset->anchor->children) 2749 pr->nr++; 2750 } 2751 PF_RULES_RUNLOCK(); 2752 2753 return (0); 2754 } 2755 2756 int 2757 pf_ioctl_get_ruleset(struct pfioc_ruleset *pr) 2758 { 2759 struct pf_kruleset *ruleset; 2760 struct pf_kanchor *anchor; 2761 u_int32_t nr = 0; 2762 int error = 0; 2763 2764 PF_RULES_RLOCK_TRACKER; 2765 2766 PF_RULES_RLOCK(); 2767 if ((ruleset = pf_find_kruleset(pr->path)) == NULL) { 2768 PF_RULES_RUNLOCK(); 2769 return (ENOENT); 2770 } 2771 2772 pr->name[0] = 0; 2773 if (ruleset->anchor == NULL) { 2774 /* XXX kludge for pf_main_ruleset */ 2775 RB_FOREACH(anchor, pf_kanchor_global, &V_pf_anchors) 2776 if (anchor->parent == NULL && nr++ == pr->nr) { 2777 strlcpy(pr->name, anchor->name, 2778 sizeof(pr->name)); 2779 break; 2780 } 2781 } else { 2782 RB_FOREACH(anchor, pf_kanchor_node, 2783 &ruleset->anchor->children) 2784 if (nr++ == pr->nr) { 2785 strlcpy(pr->name, anchor->name, 2786 sizeof(pr->name)); 2787 break; 2788 } 2789 } 2790 if (!pr->name[0]) 2791 error = EBUSY; 2792 PF_RULES_RUNLOCK(); 2793 2794 return (error); 2795 } 2796 2797 static int 2798 pfioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags, struct thread *td) 2799 { 2800 int error = 0; 2801 PF_RULES_RLOCK_TRACKER; 2802 2803 #define ERROUT_IOCTL(target, x) \ 2804 do { \ 2805 error = (x); \ 2806 SDT_PROBE3(pf, ioctl, ioctl, error, cmd, error, __LINE__); \ 2807 goto target; \ 2808 } while (0) 2809 2810 2811 /* XXX keep in sync with switch() below */ 2812 if (securelevel_gt(td->td_ucred, 2)) 2813 switch (cmd) { 2814 case DIOCGETRULES: 2815 case DIOCGETRULENV: 2816 case DIOCGETADDRS: 2817 case DIOCGETADDR: 2818 case DIOCGETSTATE: 2819 case DIOCGETSTATENV: 2820 case DIOCSETSTATUSIF: 2821 case DIOCGETSTATUSNV: 2822 case DIOCCLRSTATUS: 2823 case DIOCNATLOOK: 2824 case DIOCSETDEBUG: 2825 #ifdef COMPAT_FREEBSD14 2826 case DIOCGETSTATES: 2827 case DIOCGETSTATESV2: 2828 #endif 2829 case DIOCGETTIMEOUT: 2830 case DIOCCLRRULECTRS: 2831 case DIOCGETLIMIT: 2832 case DIOCGETALTQSV0: 2833 case DIOCGETALTQSV1: 2834 case DIOCGETALTQV0: 2835 case DIOCGETALTQV1: 2836 case DIOCGETQSTATSV0: 2837 case DIOCGETQSTATSV1: 2838 case DIOCGETRULESETS: 2839 case DIOCGETRULESET: 2840 case DIOCRGETTABLES: 2841 case DIOCRGETTSTATS: 2842 case DIOCRCLRTSTATS: 2843 case DIOCRCLRADDRS: 2844 case DIOCRADDADDRS: 2845 case DIOCRDELADDRS: 2846 case DIOCRSETADDRS: 2847 case DIOCRGETADDRS: 2848 case DIOCRGETASTATS: 2849 case DIOCRCLRASTATS: 2850 case DIOCRTSTADDRS: 2851 case DIOCOSFPGET: 2852 case DIOCGETSRCNODES: 2853 case DIOCCLRSRCNODES: 2854 case DIOCGETSYNCOOKIES: 2855 case DIOCIGETIFACES: 2856 case DIOCGIFSPEEDV0: 2857 case DIOCGIFSPEEDV1: 2858 case DIOCSETIFFLAG: 2859 case DIOCCLRIFFLAG: 2860 case DIOCGETETHRULES: 2861 case DIOCGETETHRULE: 2862 case DIOCGETETHRULESETS: 2863 case DIOCGETETHRULESET: 2864 break; 2865 case DIOCRCLRTABLES: 2866 case DIOCRADDTABLES: 2867 case DIOCRDELTABLES: 2868 case DIOCRSETTFLAGS: 2869 if (((struct pfioc_table *)addr)->pfrio_flags & 2870 PFR_FLAG_DUMMY) 2871 break; /* dummy operation ok */ 2872 return (EPERM); 2873 default: 2874 return (EPERM); 2875 } 2876 2877 if (!(flags & FWRITE)) 2878 switch (cmd) { 2879 case DIOCGETRULES: 2880 case DIOCGETADDRS: 2881 case DIOCGETADDR: 2882 case DIOCGETSTATE: 2883 case DIOCGETSTATENV: 2884 case DIOCGETSTATUSNV: 2885 #ifdef COMPAT_FREEBSD14 2886 case DIOCGETSTATES: 2887 case DIOCGETSTATESV2: 2888 #endif 2889 case DIOCGETTIMEOUT: 2890 case DIOCGETLIMIT: 2891 case DIOCGETALTQSV0: 2892 case DIOCGETALTQSV1: 2893 case DIOCGETALTQV0: 2894 case DIOCGETALTQV1: 2895 case DIOCGETQSTATSV0: 2896 case DIOCGETQSTATSV1: 2897 case DIOCGETRULESETS: 2898 case DIOCGETRULESET: 2899 case DIOCNATLOOK: 2900 case DIOCRGETTABLES: 2901 case DIOCRGETTSTATS: 2902 case DIOCRGETADDRS: 2903 case DIOCRGETASTATS: 2904 case DIOCRTSTADDRS: 2905 case DIOCOSFPGET: 2906 case DIOCGETSRCNODES: 2907 case DIOCGETSYNCOOKIES: 2908 case DIOCIGETIFACES: 2909 case DIOCGIFSPEEDV1: 2910 case DIOCGIFSPEEDV0: 2911 case DIOCGETRULENV: 2912 case DIOCGETETHRULES: 2913 case DIOCGETETHRULE: 2914 case DIOCGETETHRULESETS: 2915 case DIOCGETETHRULESET: 2916 break; 2917 case DIOCRCLRTABLES: 2918 case DIOCRADDTABLES: 2919 case DIOCRDELTABLES: 2920 case DIOCRCLRTSTATS: 2921 case DIOCRCLRADDRS: 2922 case DIOCRADDADDRS: 2923 case DIOCRDELADDRS: 2924 case DIOCRSETADDRS: 2925 case DIOCRSETTFLAGS: 2926 if (((struct pfioc_table *)addr)->pfrio_flags & 2927 PFR_FLAG_DUMMY) { 2928 flags |= FWRITE; /* need write lock for dummy */ 2929 break; /* dummy operation ok */ 2930 } 2931 return (EACCES); 2932 default: 2933 return (EACCES); 2934 } 2935 2936 CURVNET_SET(TD_TO_VNET(td)); 2937 2938 switch (cmd) { 2939 #ifdef COMPAT_FREEBSD14 2940 case DIOCSTART: 2941 error = pf_start(); 2942 break; 2943 2944 case DIOCSTOP: 2945 error = pf_stop(); 2946 break; 2947 #endif 2948 2949 case DIOCGETETHRULES: { 2950 struct pfioc_nv *nv = (struct pfioc_nv *)addr; 2951 nvlist_t *nvl; 2952 void *packed; 2953 struct pf_keth_rule *tail; 2954 struct pf_keth_ruleset *rs; 2955 u_int32_t ticket, nr; 2956 const char *anchor = ""; 2957 2958 nvl = NULL; 2959 packed = NULL; 2960 2961 #define ERROUT(x) ERROUT_IOCTL(DIOCGETETHRULES_error, x) 2962 2963 if (nv->len > pf_ioctl_maxcount) 2964 ERROUT(ENOMEM); 2965 2966 /* Copy the request in */ 2967 packed = malloc(nv->len, M_NVLIST, M_WAITOK); 2968 error = copyin(nv->data, packed, nv->len); 2969 if (error) 2970 ERROUT(error); 2971 2972 nvl = nvlist_unpack(packed, nv->len, 0); 2973 if (nvl == NULL) 2974 ERROUT(EBADMSG); 2975 2976 if (! nvlist_exists_string(nvl, "anchor")) 2977 ERROUT(EBADMSG); 2978 2979 anchor = nvlist_get_string(nvl, "anchor"); 2980 2981 rs = pf_find_keth_ruleset(anchor); 2982 2983 nvlist_destroy(nvl); 2984 nvl = NULL; 2985 free(packed, M_NVLIST); 2986 packed = NULL; 2987 2988 if (rs == NULL) 2989 ERROUT(ENOENT); 2990 2991 /* Reply */ 2992 nvl = nvlist_create(0); 2993 if (nvl == NULL) 2994 ERROUT(ENOMEM); 2995 2996 PF_RULES_RLOCK(); 2997 2998 ticket = rs->active.ticket; 2999 tail = TAILQ_LAST(rs->active.rules, pf_keth_ruleq); 3000 if (tail) 3001 nr = tail->nr + 1; 3002 else 3003 nr = 0; 3004 3005 PF_RULES_RUNLOCK(); 3006 3007 nvlist_add_number(nvl, "ticket", ticket); 3008 nvlist_add_number(nvl, "nr", nr); 3009 3010 packed = nvlist_pack(nvl, &nv->len); 3011 if (packed == NULL) 3012 ERROUT(ENOMEM); 3013 3014 if (nv->size == 0) 3015 ERROUT(0); 3016 else if (nv->size < nv->len) 3017 ERROUT(ENOSPC); 3018 3019 error = copyout(packed, nv->data, nv->len); 3020 3021 #undef ERROUT 3022 DIOCGETETHRULES_error: 3023 free(packed, M_NVLIST); 3024 nvlist_destroy(nvl); 3025 break; 3026 } 3027 3028 case DIOCGETETHRULE: { 3029 struct epoch_tracker et; 3030 struct pfioc_nv *nv = (struct pfioc_nv *)addr; 3031 nvlist_t *nvl = NULL; 3032 void *nvlpacked = NULL; 3033 struct pf_keth_rule *rule = NULL; 3034 struct pf_keth_ruleset *rs; 3035 u_int32_t ticket, nr; 3036 bool clear = false; 3037 const char *anchor; 3038 3039 #define ERROUT(x) ERROUT_IOCTL(DIOCGETETHRULE_error, x) 3040 3041 if (nv->len > pf_ioctl_maxcount) 3042 ERROUT(ENOMEM); 3043 3044 nvlpacked = malloc(nv->len, M_NVLIST, M_WAITOK); 3045 error = copyin(nv->data, nvlpacked, nv->len); 3046 if (error) 3047 ERROUT(error); 3048 3049 nvl = nvlist_unpack(nvlpacked, nv->len, 0); 3050 if (nvl == NULL) 3051 ERROUT(EBADMSG); 3052 if (! nvlist_exists_number(nvl, "ticket")) 3053 ERROUT(EBADMSG); 3054 ticket = nvlist_get_number(nvl, "ticket"); 3055 if (! nvlist_exists_string(nvl, "anchor")) 3056 ERROUT(EBADMSG); 3057 anchor = nvlist_get_string(nvl, "anchor"); 3058 3059 if (nvlist_exists_bool(nvl, "clear")) 3060 clear = nvlist_get_bool(nvl, "clear"); 3061 3062 if (clear && !(flags & FWRITE)) 3063 ERROUT(EACCES); 3064 3065 if (! nvlist_exists_number(nvl, "nr")) 3066 ERROUT(EBADMSG); 3067 nr = nvlist_get_number(nvl, "nr"); 3068 3069 PF_RULES_RLOCK(); 3070 rs = pf_find_keth_ruleset(anchor); 3071 if (rs == NULL) { 3072 PF_RULES_RUNLOCK(); 3073 ERROUT(ENOENT); 3074 } 3075 if (ticket != rs->active.ticket) { 3076 PF_RULES_RUNLOCK(); 3077 ERROUT(EBUSY); 3078 } 3079 3080 nvlist_destroy(nvl); 3081 nvl = NULL; 3082 free(nvlpacked, M_NVLIST); 3083 nvlpacked = NULL; 3084 3085 rule = TAILQ_FIRST(rs->active.rules); 3086 while ((rule != NULL) && (rule->nr != nr)) 3087 rule = TAILQ_NEXT(rule, entries); 3088 if (rule == NULL) { 3089 PF_RULES_RUNLOCK(); 3090 ERROUT(ENOENT); 3091 } 3092 /* Make sure rule can't go away. */ 3093 NET_EPOCH_ENTER(et); 3094 PF_RULES_RUNLOCK(); 3095 nvl = pf_keth_rule_to_nveth_rule(rule); 3096 if (pf_keth_anchor_nvcopyout(rs, rule, nvl)) { 3097 NET_EPOCH_EXIT(et); 3098 ERROUT(EBUSY); 3099 } 3100 NET_EPOCH_EXIT(et); 3101 if (nvl == NULL) 3102 ERROUT(ENOMEM); 3103 3104 nvlpacked = nvlist_pack(nvl, &nv->len); 3105 if (nvlpacked == NULL) 3106 ERROUT(ENOMEM); 3107 3108 if (nv->size == 0) 3109 ERROUT(0); 3110 else if (nv->size < nv->len) 3111 ERROUT(ENOSPC); 3112 3113 error = copyout(nvlpacked, nv->data, nv->len); 3114 if (error == 0 && clear) { 3115 counter_u64_zero(rule->evaluations); 3116 for (int i = 0; i < 2; i++) { 3117 counter_u64_zero(rule->packets[i]); 3118 counter_u64_zero(rule->bytes[i]); 3119 } 3120 } 3121 3122 #undef ERROUT 3123 DIOCGETETHRULE_error: 3124 free(nvlpacked, M_NVLIST); 3125 nvlist_destroy(nvl); 3126 break; 3127 } 3128 3129 case DIOCADDETHRULE: { 3130 struct pfioc_nv *nv = (struct pfioc_nv *)addr; 3131 nvlist_t *nvl = NULL; 3132 void *nvlpacked = NULL; 3133 struct pf_keth_rule *rule = NULL, *tail = NULL; 3134 struct pf_keth_ruleset *ruleset = NULL; 3135 struct pfi_kkif *kif = NULL, *bridge_to_kif = NULL; 3136 const char *anchor = "", *anchor_call = ""; 3137 3138 #define ERROUT(x) ERROUT_IOCTL(DIOCADDETHRULE_error, x) 3139 3140 if (nv->len > pf_ioctl_maxcount) 3141 ERROUT(ENOMEM); 3142 3143 nvlpacked = malloc(nv->len, M_NVLIST, M_WAITOK); 3144 error = copyin(nv->data, nvlpacked, nv->len); 3145 if (error) 3146 ERROUT(error); 3147 3148 nvl = nvlist_unpack(nvlpacked, nv->len, 0); 3149 if (nvl == NULL) 3150 ERROUT(EBADMSG); 3151 3152 if (! nvlist_exists_number(nvl, "ticket")) 3153 ERROUT(EBADMSG); 3154 3155 if (nvlist_exists_string(nvl, "anchor")) 3156 anchor = nvlist_get_string(nvl, "anchor"); 3157 if (nvlist_exists_string(nvl, "anchor_call")) 3158 anchor_call = nvlist_get_string(nvl, "anchor_call"); 3159 3160 ruleset = pf_find_keth_ruleset(anchor); 3161 if (ruleset == NULL) 3162 ERROUT(EINVAL); 3163 3164 if (nvlist_get_number(nvl, "ticket") != 3165 ruleset->inactive.ticket) { 3166 DPFPRINTF(PF_DEBUG_MISC, 3167 ("ticket: %d != %d\n", 3168 (u_int32_t)nvlist_get_number(nvl, "ticket"), 3169 ruleset->inactive.ticket)); 3170 ERROUT(EBUSY); 3171 } 3172 3173 rule = malloc(sizeof(*rule), M_PFRULE, M_WAITOK); 3174 rule->timestamp = NULL; 3175 3176 error = pf_nveth_rule_to_keth_rule(nvl, rule); 3177 if (error != 0) 3178 ERROUT(error); 3179 3180 if (rule->ifname[0]) 3181 kif = pf_kkif_create(M_WAITOK); 3182 if (rule->bridge_to_name[0]) 3183 bridge_to_kif = pf_kkif_create(M_WAITOK); 3184 rule->evaluations = counter_u64_alloc(M_WAITOK); 3185 for (int i = 0; i < 2; i++) { 3186 rule->packets[i] = counter_u64_alloc(M_WAITOK); 3187 rule->bytes[i] = counter_u64_alloc(M_WAITOK); 3188 } 3189 rule->timestamp = uma_zalloc_pcpu(pf_timestamp_pcpu_zone, 3190 M_WAITOK | M_ZERO); 3191 3192 PF_RULES_WLOCK(); 3193 3194 if (rule->ifname[0]) { 3195 rule->kif = pfi_kkif_attach(kif, rule->ifname); 3196 pfi_kkif_ref(rule->kif); 3197 } else 3198 rule->kif = NULL; 3199 if (rule->bridge_to_name[0]) { 3200 rule->bridge_to = pfi_kkif_attach(bridge_to_kif, 3201 rule->bridge_to_name); 3202 pfi_kkif_ref(rule->bridge_to); 3203 } else 3204 rule->bridge_to = NULL; 3205 3206 #ifdef ALTQ 3207 /* set queue IDs */ 3208 if (rule->qname[0] != 0) { 3209 if ((rule->qid = pf_qname2qid(rule->qname)) == 0) 3210 error = EBUSY; 3211 else 3212 rule->qid = rule->qid; 3213 } 3214 #endif 3215 if (rule->tagname[0]) 3216 if ((rule->tag = pf_tagname2tag(rule->tagname)) == 0) 3217 error = EBUSY; 3218 if (rule->match_tagname[0]) 3219 if ((rule->match_tag = pf_tagname2tag( 3220 rule->match_tagname)) == 0) 3221 error = EBUSY; 3222 3223 if (error == 0 && rule->ipdst.addr.type == PF_ADDR_TABLE) 3224 error = pf_eth_addr_setup(ruleset, &rule->ipdst.addr); 3225 if (error == 0 && rule->ipsrc.addr.type == PF_ADDR_TABLE) 3226 error = pf_eth_addr_setup(ruleset, &rule->ipsrc.addr); 3227 3228 if (error) { 3229 pf_free_eth_rule(rule); 3230 PF_RULES_WUNLOCK(); 3231 ERROUT(error); 3232 } 3233 3234 if (pf_keth_anchor_setup(rule, ruleset, anchor_call)) { 3235 pf_free_eth_rule(rule); 3236 PF_RULES_WUNLOCK(); 3237 ERROUT(EINVAL); 3238 } 3239 3240 tail = TAILQ_LAST(ruleset->inactive.rules, pf_keth_ruleq); 3241 if (tail) 3242 rule->nr = tail->nr + 1; 3243 else 3244 rule->nr = 0; 3245 3246 TAILQ_INSERT_TAIL(ruleset->inactive.rules, rule, entries); 3247 3248 PF_RULES_WUNLOCK(); 3249 3250 #undef ERROUT 3251 DIOCADDETHRULE_error: 3252 nvlist_destroy(nvl); 3253 free(nvlpacked, M_NVLIST); 3254 break; 3255 } 3256 3257 case DIOCGETETHRULESETS: { 3258 struct epoch_tracker et; 3259 struct pfioc_nv *nv = (struct pfioc_nv *)addr; 3260 nvlist_t *nvl = NULL; 3261 void *nvlpacked = NULL; 3262 struct pf_keth_ruleset *ruleset; 3263 struct pf_keth_anchor *anchor; 3264 int nr = 0; 3265 3266 #define ERROUT(x) ERROUT_IOCTL(DIOCGETETHRULESETS_error, x) 3267 3268 if (nv->len > pf_ioctl_maxcount) 3269 ERROUT(ENOMEM); 3270 3271 nvlpacked = malloc(nv->len, M_NVLIST, M_WAITOK); 3272 error = copyin(nv->data, nvlpacked, nv->len); 3273 if (error) 3274 ERROUT(error); 3275 3276 nvl = nvlist_unpack(nvlpacked, nv->len, 0); 3277 if (nvl == NULL) 3278 ERROUT(EBADMSG); 3279 if (! nvlist_exists_string(nvl, "path")) 3280 ERROUT(EBADMSG); 3281 3282 NET_EPOCH_ENTER(et); 3283 3284 if ((ruleset = pf_find_keth_ruleset( 3285 nvlist_get_string(nvl, "path"))) == NULL) { 3286 NET_EPOCH_EXIT(et); 3287 ERROUT(ENOENT); 3288 } 3289 3290 if (ruleset->anchor == NULL) { 3291 RB_FOREACH(anchor, pf_keth_anchor_global, &V_pf_keth_anchors) 3292 if (anchor->parent == NULL) 3293 nr++; 3294 } else { 3295 RB_FOREACH(anchor, pf_keth_anchor_node, 3296 &ruleset->anchor->children) 3297 nr++; 3298 } 3299 3300 NET_EPOCH_EXIT(et); 3301 3302 nvlist_destroy(nvl); 3303 nvl = NULL; 3304 free(nvlpacked, M_NVLIST); 3305 nvlpacked = NULL; 3306 3307 nvl = nvlist_create(0); 3308 if (nvl == NULL) 3309 ERROUT(ENOMEM); 3310 3311 nvlist_add_number(nvl, "nr", nr); 3312 3313 nvlpacked = nvlist_pack(nvl, &nv->len); 3314 if (nvlpacked == NULL) 3315 ERROUT(ENOMEM); 3316 3317 if (nv->size == 0) 3318 ERROUT(0); 3319 else if (nv->size < nv->len) 3320 ERROUT(ENOSPC); 3321 3322 error = copyout(nvlpacked, nv->data, nv->len); 3323 3324 #undef ERROUT 3325 DIOCGETETHRULESETS_error: 3326 free(nvlpacked, M_NVLIST); 3327 nvlist_destroy(nvl); 3328 break; 3329 } 3330 3331 case DIOCGETETHRULESET: { 3332 struct epoch_tracker et; 3333 struct pfioc_nv *nv = (struct pfioc_nv *)addr; 3334 nvlist_t *nvl = NULL; 3335 void *nvlpacked = NULL; 3336 struct pf_keth_ruleset *ruleset; 3337 struct pf_keth_anchor *anchor; 3338 int nr = 0, req_nr = 0; 3339 bool found = false; 3340 3341 #define ERROUT(x) ERROUT_IOCTL(DIOCGETETHRULESET_error, x) 3342 3343 if (nv->len > pf_ioctl_maxcount) 3344 ERROUT(ENOMEM); 3345 3346 nvlpacked = malloc(nv->len, M_NVLIST, M_WAITOK); 3347 error = copyin(nv->data, nvlpacked, nv->len); 3348 if (error) 3349 ERROUT(error); 3350 3351 nvl = nvlist_unpack(nvlpacked, nv->len, 0); 3352 if (nvl == NULL) 3353 ERROUT(EBADMSG); 3354 if (! nvlist_exists_string(nvl, "path")) 3355 ERROUT(EBADMSG); 3356 if (! nvlist_exists_number(nvl, "nr")) 3357 ERROUT(EBADMSG); 3358 3359 req_nr = nvlist_get_number(nvl, "nr"); 3360 3361 NET_EPOCH_ENTER(et); 3362 3363 if ((ruleset = pf_find_keth_ruleset( 3364 nvlist_get_string(nvl, "path"))) == NULL) { 3365 NET_EPOCH_EXIT(et); 3366 ERROUT(ENOENT); 3367 } 3368 3369 nvlist_destroy(nvl); 3370 nvl = NULL; 3371 free(nvlpacked, M_NVLIST); 3372 nvlpacked = NULL; 3373 3374 nvl = nvlist_create(0); 3375 if (nvl == NULL) { 3376 NET_EPOCH_EXIT(et); 3377 ERROUT(ENOMEM); 3378 } 3379 3380 if (ruleset->anchor == NULL) { 3381 RB_FOREACH(anchor, pf_keth_anchor_global, 3382 &V_pf_keth_anchors) { 3383 if (anchor->parent == NULL && nr++ == req_nr) { 3384 found = true; 3385 break; 3386 } 3387 } 3388 } else { 3389 RB_FOREACH(anchor, pf_keth_anchor_node, 3390 &ruleset->anchor->children) { 3391 if (nr++ == req_nr) { 3392 found = true; 3393 break; 3394 } 3395 } 3396 } 3397 3398 NET_EPOCH_EXIT(et); 3399 if (found) { 3400 nvlist_add_number(nvl, "nr", nr); 3401 nvlist_add_string(nvl, "name", anchor->name); 3402 if (ruleset->anchor) 3403 nvlist_add_string(nvl, "path", 3404 ruleset->anchor->path); 3405 else 3406 nvlist_add_string(nvl, "path", ""); 3407 } else { 3408 ERROUT(EBUSY); 3409 } 3410 3411 nvlpacked = nvlist_pack(nvl, &nv->len); 3412 if (nvlpacked == NULL) 3413 ERROUT(ENOMEM); 3414 3415 if (nv->size == 0) 3416 ERROUT(0); 3417 else if (nv->size < nv->len) 3418 ERROUT(ENOSPC); 3419 3420 error = copyout(nvlpacked, nv->data, nv->len); 3421 3422 #undef ERROUT 3423 DIOCGETETHRULESET_error: 3424 free(nvlpacked, M_NVLIST); 3425 nvlist_destroy(nvl); 3426 break; 3427 } 3428 3429 case DIOCADDRULENV: { 3430 struct pfioc_nv *nv = (struct pfioc_nv *)addr; 3431 nvlist_t *nvl = NULL; 3432 void *nvlpacked = NULL; 3433 struct pf_krule *rule = NULL; 3434 const char *anchor = "", *anchor_call = ""; 3435 uint32_t ticket = 0, pool_ticket = 0; 3436 3437 #define ERROUT(x) ERROUT_IOCTL(DIOCADDRULENV_error, x) 3438 3439 if (nv->len > pf_ioctl_maxcount) 3440 ERROUT(ENOMEM); 3441 3442 nvlpacked = malloc(nv->len, M_NVLIST, M_WAITOK); 3443 error = copyin(nv->data, nvlpacked, nv->len); 3444 if (error) 3445 ERROUT(error); 3446 3447 nvl = nvlist_unpack(nvlpacked, nv->len, 0); 3448 if (nvl == NULL) 3449 ERROUT(EBADMSG); 3450 3451 if (! nvlist_exists_number(nvl, "ticket")) 3452 ERROUT(EINVAL); 3453 ticket = nvlist_get_number(nvl, "ticket"); 3454 3455 if (! nvlist_exists_number(nvl, "pool_ticket")) 3456 ERROUT(EINVAL); 3457 pool_ticket = nvlist_get_number(nvl, "pool_ticket"); 3458 3459 if (! nvlist_exists_nvlist(nvl, "rule")) 3460 ERROUT(EINVAL); 3461 3462 rule = pf_krule_alloc(); 3463 error = pf_nvrule_to_krule(nvlist_get_nvlist(nvl, "rule"), 3464 rule); 3465 if (error) 3466 ERROUT(error); 3467 3468 if (nvlist_exists_string(nvl, "anchor")) 3469 anchor = nvlist_get_string(nvl, "anchor"); 3470 if (nvlist_exists_string(nvl, "anchor_call")) 3471 anchor_call = nvlist_get_string(nvl, "anchor_call"); 3472 3473 if ((error = nvlist_error(nvl))) 3474 ERROUT(error); 3475 3476 /* Frees rule on error */ 3477 error = pf_ioctl_addrule(rule, ticket, pool_ticket, anchor, 3478 anchor_call, td->td_ucred->cr_ruid, 3479 td->td_proc ? td->td_proc->p_pid : 0); 3480 3481 nvlist_destroy(nvl); 3482 free(nvlpacked, M_NVLIST); 3483 break; 3484 #undef ERROUT 3485 DIOCADDRULENV_error: 3486 pf_krule_free(rule); 3487 nvlist_destroy(nvl); 3488 free(nvlpacked, M_NVLIST); 3489 3490 break; 3491 } 3492 case DIOCADDRULE: { 3493 struct pfioc_rule *pr = (struct pfioc_rule *)addr; 3494 struct pf_krule *rule; 3495 3496 rule = pf_krule_alloc(); 3497 error = pf_rule_to_krule(&pr->rule, rule); 3498 if (error != 0) { 3499 pf_krule_free(rule); 3500 break; 3501 } 3502 3503 pr->anchor[sizeof(pr->anchor) - 1] = 0; 3504 3505 /* Frees rule on error */ 3506 error = pf_ioctl_addrule(rule, pr->ticket, pr->pool_ticket, 3507 pr->anchor, pr->anchor_call, td->td_ucred->cr_ruid, 3508 td->td_proc ? td->td_proc->p_pid : 0); 3509 break; 3510 } 3511 3512 case DIOCGETRULES: { 3513 struct pfioc_rule *pr = (struct pfioc_rule *)addr; 3514 3515 pr->anchor[sizeof(pr->anchor) - 1] = 0; 3516 3517 error = pf_ioctl_getrules(pr); 3518 3519 break; 3520 } 3521 3522 case DIOCGETRULENV: { 3523 struct pfioc_nv *nv = (struct pfioc_nv *)addr; 3524 nvlist_t *nvrule = NULL; 3525 nvlist_t *nvl = NULL; 3526 struct pf_kruleset *ruleset; 3527 struct pf_krule *rule; 3528 void *nvlpacked = NULL; 3529 int rs_num, nr; 3530 bool clear_counter = false; 3531 3532 #define ERROUT(x) ERROUT_IOCTL(DIOCGETRULENV_error, x) 3533 3534 if (nv->len > pf_ioctl_maxcount) 3535 ERROUT(ENOMEM); 3536 3537 /* Copy the request in */ 3538 nvlpacked = malloc(nv->len, M_NVLIST, M_WAITOK); 3539 error = copyin(nv->data, nvlpacked, nv->len); 3540 if (error) 3541 ERROUT(error); 3542 3543 nvl = nvlist_unpack(nvlpacked, nv->len, 0); 3544 if (nvl == NULL) 3545 ERROUT(EBADMSG); 3546 3547 if (! nvlist_exists_string(nvl, "anchor")) 3548 ERROUT(EBADMSG); 3549 if (! nvlist_exists_number(nvl, "ruleset")) 3550 ERROUT(EBADMSG); 3551 if (! nvlist_exists_number(nvl, "ticket")) 3552 ERROUT(EBADMSG); 3553 if (! nvlist_exists_number(nvl, "nr")) 3554 ERROUT(EBADMSG); 3555 3556 if (nvlist_exists_bool(nvl, "clear_counter")) 3557 clear_counter = nvlist_get_bool(nvl, "clear_counter"); 3558 3559 if (clear_counter && !(flags & FWRITE)) 3560 ERROUT(EACCES); 3561 3562 nr = nvlist_get_number(nvl, "nr"); 3563 3564 PF_RULES_WLOCK(); 3565 ruleset = pf_find_kruleset(nvlist_get_string(nvl, "anchor")); 3566 if (ruleset == NULL) { 3567 PF_RULES_WUNLOCK(); 3568 ERROUT(ENOENT); 3569 } 3570 3571 rs_num = pf_get_ruleset_number(nvlist_get_number(nvl, "ruleset")); 3572 if (rs_num >= PF_RULESET_MAX) { 3573 PF_RULES_WUNLOCK(); 3574 ERROUT(EINVAL); 3575 } 3576 3577 if (nvlist_get_number(nvl, "ticket") != 3578 ruleset->rules[rs_num].active.ticket) { 3579 PF_RULES_WUNLOCK(); 3580 ERROUT(EBUSY); 3581 } 3582 3583 if ((error = nvlist_error(nvl))) { 3584 PF_RULES_WUNLOCK(); 3585 ERROUT(error); 3586 } 3587 3588 rule = TAILQ_FIRST(ruleset->rules[rs_num].active.ptr); 3589 while ((rule != NULL) && (rule->nr != nr)) 3590 rule = TAILQ_NEXT(rule, entries); 3591 if (rule == NULL) { 3592 PF_RULES_WUNLOCK(); 3593 ERROUT(EBUSY); 3594 } 3595 3596 nvrule = pf_krule_to_nvrule(rule); 3597 3598 nvlist_destroy(nvl); 3599 nvl = nvlist_create(0); 3600 if (nvl == NULL) { 3601 PF_RULES_WUNLOCK(); 3602 ERROUT(ENOMEM); 3603 } 3604 nvlist_add_number(nvl, "nr", nr); 3605 nvlist_add_nvlist(nvl, "rule", nvrule); 3606 nvlist_destroy(nvrule); 3607 nvrule = NULL; 3608 if (pf_kanchor_nvcopyout(ruleset, rule, nvl)) { 3609 PF_RULES_WUNLOCK(); 3610 ERROUT(EBUSY); 3611 } 3612 3613 free(nvlpacked, M_NVLIST); 3614 nvlpacked = nvlist_pack(nvl, &nv->len); 3615 if (nvlpacked == NULL) { 3616 PF_RULES_WUNLOCK(); 3617 ERROUT(ENOMEM); 3618 } 3619 3620 if (nv->size == 0) { 3621 PF_RULES_WUNLOCK(); 3622 ERROUT(0); 3623 } 3624 else if (nv->size < nv->len) { 3625 PF_RULES_WUNLOCK(); 3626 ERROUT(ENOSPC); 3627 } 3628 3629 if (clear_counter) 3630 pf_krule_clear_counters(rule); 3631 3632 PF_RULES_WUNLOCK(); 3633 3634 error = copyout(nvlpacked, nv->data, nv->len); 3635 3636 #undef ERROUT 3637 DIOCGETRULENV_error: 3638 free(nvlpacked, M_NVLIST); 3639 nvlist_destroy(nvrule); 3640 nvlist_destroy(nvl); 3641 3642 break; 3643 } 3644 3645 case DIOCCHANGERULE: { 3646 struct pfioc_rule *pcr = (struct pfioc_rule *)addr; 3647 struct pf_kruleset *ruleset; 3648 struct pf_krule *oldrule = NULL, *newrule = NULL; 3649 struct pfi_kkif *kif = NULL; 3650 struct pf_kpooladdr *pa; 3651 u_int32_t nr = 0; 3652 int rs_num; 3653 3654 pcr->anchor[sizeof(pcr->anchor) - 1] = 0; 3655 3656 if (pcr->action < PF_CHANGE_ADD_HEAD || 3657 pcr->action > PF_CHANGE_GET_TICKET) { 3658 error = EINVAL; 3659 break; 3660 } 3661 if (pcr->rule.return_icmp >> 8 > ICMP_MAXTYPE) { 3662 error = EINVAL; 3663 break; 3664 } 3665 3666 if (pcr->action != PF_CHANGE_REMOVE) { 3667 newrule = pf_krule_alloc(); 3668 error = pf_rule_to_krule(&pcr->rule, newrule); 3669 if (error != 0) { 3670 pf_krule_free(newrule); 3671 break; 3672 } 3673 3674 if (newrule->ifname[0]) 3675 kif = pf_kkif_create(M_WAITOK); 3676 pf_counter_u64_init(&newrule->evaluations, M_WAITOK); 3677 for (int i = 0; i < 2; i++) { 3678 pf_counter_u64_init(&newrule->packets[i], M_WAITOK); 3679 pf_counter_u64_init(&newrule->bytes[i], M_WAITOK); 3680 } 3681 newrule->states_cur = counter_u64_alloc(M_WAITOK); 3682 newrule->states_tot = counter_u64_alloc(M_WAITOK); 3683 for (pf_sn_types_t sn_type=0; sn_type<PF_SN_MAX; sn_type++) 3684 newrule->src_nodes[sn_type] = counter_u64_alloc(M_WAITOK); 3685 newrule->cuid = td->td_ucred->cr_ruid; 3686 newrule->cpid = td->td_proc ? td->td_proc->p_pid : 0; 3687 TAILQ_INIT(&newrule->nat.list); 3688 TAILQ_INIT(&newrule->rdr.list); 3689 TAILQ_INIT(&newrule->route.list); 3690 } 3691 #define ERROUT(x) ERROUT_IOCTL(DIOCCHANGERULE_error, x) 3692 3693 PF_CONFIG_LOCK(); 3694 PF_RULES_WLOCK(); 3695 #ifdef PF_WANT_32_TO_64_COUNTER 3696 if (newrule != NULL) { 3697 LIST_INSERT_HEAD(&V_pf_allrulelist, newrule, allrulelist); 3698 newrule->allrulelinked = true; 3699 V_pf_allrulecount++; 3700 } 3701 #endif 3702 3703 if (!(pcr->action == PF_CHANGE_REMOVE || 3704 pcr->action == PF_CHANGE_GET_TICKET) && 3705 pcr->pool_ticket != V_ticket_pabuf) 3706 ERROUT(EBUSY); 3707 3708 ruleset = pf_find_kruleset(pcr->anchor); 3709 if (ruleset == NULL) 3710 ERROUT(EINVAL); 3711 3712 rs_num = pf_get_ruleset_number(pcr->rule.action); 3713 if (rs_num >= PF_RULESET_MAX) 3714 ERROUT(EINVAL); 3715 3716 /* 3717 * XXXMJG: there is no guarantee that the ruleset was 3718 * created by the usual route of calling DIOCXBEGIN. 3719 * As a result it is possible the rule tree will not 3720 * be allocated yet. Hack around it by doing it here. 3721 * Note it is fine to let the tree persist in case of 3722 * error as it will be freed down the road on future 3723 * updates (if need be). 3724 */ 3725 if (ruleset->rules[rs_num].active.tree == NULL) { 3726 ruleset->rules[rs_num].active.tree = pf_rule_tree_alloc(M_NOWAIT); 3727 if (ruleset->rules[rs_num].active.tree == NULL) { 3728 ERROUT(ENOMEM); 3729 } 3730 } 3731 3732 if (pcr->action == PF_CHANGE_GET_TICKET) { 3733 pcr->ticket = ++ruleset->rules[rs_num].active.ticket; 3734 ERROUT(0); 3735 } else if (pcr->ticket != 3736 ruleset->rules[rs_num].active.ticket) 3737 ERROUT(EINVAL); 3738 3739 if (pcr->action != PF_CHANGE_REMOVE) { 3740 if (newrule->ifname[0]) { 3741 newrule->kif = pfi_kkif_attach(kif, 3742 newrule->ifname); 3743 kif = NULL; 3744 pfi_kkif_ref(newrule->kif); 3745 } else 3746 newrule->kif = NULL; 3747 3748 if (newrule->rtableid > 0 && 3749 newrule->rtableid >= rt_numfibs) 3750 error = EBUSY; 3751 3752 #ifdef ALTQ 3753 /* set queue IDs */ 3754 if (newrule->qname[0] != 0) { 3755 if ((newrule->qid = 3756 pf_qname2qid(newrule->qname)) == 0) 3757 error = EBUSY; 3758 else if (newrule->pqname[0] != 0) { 3759 if ((newrule->pqid = 3760 pf_qname2qid(newrule->pqname)) == 0) 3761 error = EBUSY; 3762 } else 3763 newrule->pqid = newrule->qid; 3764 } 3765 #endif /* ALTQ */ 3766 if (newrule->tagname[0]) 3767 if ((newrule->tag = 3768 pf_tagname2tag(newrule->tagname)) == 0) 3769 error = EBUSY; 3770 if (newrule->match_tagname[0]) 3771 if ((newrule->match_tag = pf_tagname2tag( 3772 newrule->match_tagname)) == 0) 3773 error = EBUSY; 3774 if (newrule->rt && !newrule->direction) 3775 error = EINVAL; 3776 if (!newrule->log) 3777 newrule->logif = 0; 3778 if (pf_addr_setup(ruleset, &newrule->src.addr, newrule->af)) 3779 error = ENOMEM; 3780 if (pf_addr_setup(ruleset, &newrule->dst.addr, newrule->af)) 3781 error = ENOMEM; 3782 if (pf_kanchor_setup(newrule, ruleset, pcr->anchor_call)) 3783 error = EINVAL; 3784 for (int i = 0; i < 3; i++) { 3785 TAILQ_FOREACH(pa, &V_pf_pabuf[i], entries) 3786 if (pa->addr.type == PF_ADDR_TABLE) { 3787 pa->addr.p.tbl = 3788 pfr_attach_table(ruleset, 3789 pa->addr.v.tblname); 3790 if (pa->addr.p.tbl == NULL) 3791 error = ENOMEM; 3792 } 3793 } 3794 3795 newrule->overload_tbl = NULL; 3796 if (newrule->overload_tblname[0]) { 3797 if ((newrule->overload_tbl = pfr_attach_table( 3798 ruleset, newrule->overload_tblname)) == 3799 NULL) 3800 error = EINVAL; 3801 else 3802 newrule->overload_tbl->pfrkt_flags |= 3803 PFR_TFLAG_ACTIVE; 3804 } 3805 3806 pf_mv_kpool(&V_pf_pabuf[0], &newrule->nat.list); 3807 pf_mv_kpool(&V_pf_pabuf[1], &newrule->rdr.list); 3808 pf_mv_kpool(&V_pf_pabuf[2], &newrule->route.list); 3809 if (((((newrule->action == PF_NAT) || 3810 (newrule->action == PF_RDR) || 3811 (newrule->action == PF_BINAT) || 3812 (newrule->rt > PF_NOPFROUTE)) && 3813 !newrule->anchor)) && 3814 (TAILQ_FIRST(&newrule->rdr.list) == NULL)) 3815 error = EINVAL; 3816 3817 if (error) { 3818 pf_free_rule(newrule); 3819 PF_RULES_WUNLOCK(); 3820 PF_CONFIG_UNLOCK(); 3821 break; 3822 } 3823 3824 newrule->nat.cur = TAILQ_FIRST(&newrule->nat.list); 3825 newrule->rdr.cur = TAILQ_FIRST(&newrule->rdr.list); 3826 } 3827 pf_empty_kpool(&V_pf_pabuf[0]); 3828 pf_empty_kpool(&V_pf_pabuf[1]); 3829 pf_empty_kpool(&V_pf_pabuf[2]); 3830 3831 if (pcr->action == PF_CHANGE_ADD_HEAD) 3832 oldrule = TAILQ_FIRST( 3833 ruleset->rules[rs_num].active.ptr); 3834 else if (pcr->action == PF_CHANGE_ADD_TAIL) 3835 oldrule = TAILQ_LAST( 3836 ruleset->rules[rs_num].active.ptr, pf_krulequeue); 3837 else { 3838 oldrule = TAILQ_FIRST( 3839 ruleset->rules[rs_num].active.ptr); 3840 while ((oldrule != NULL) && (oldrule->nr != pcr->nr)) 3841 oldrule = TAILQ_NEXT(oldrule, entries); 3842 if (oldrule == NULL) { 3843 if (newrule != NULL) 3844 pf_free_rule(newrule); 3845 PF_RULES_WUNLOCK(); 3846 PF_CONFIG_UNLOCK(); 3847 error = EINVAL; 3848 break; 3849 } 3850 } 3851 3852 if (pcr->action == PF_CHANGE_REMOVE) { 3853 pf_unlink_rule(ruleset->rules[rs_num].active.ptr, 3854 oldrule); 3855 RB_REMOVE(pf_krule_global, 3856 ruleset->rules[rs_num].active.tree, oldrule); 3857 ruleset->rules[rs_num].active.rcount--; 3858 } else { 3859 pf_hash_rule(newrule); 3860 if (RB_INSERT(pf_krule_global, 3861 ruleset->rules[rs_num].active.tree, newrule) != NULL) { 3862 pf_free_rule(newrule); 3863 PF_RULES_WUNLOCK(); 3864 PF_CONFIG_UNLOCK(); 3865 error = EEXIST; 3866 break; 3867 } 3868 3869 if (oldrule == NULL) 3870 TAILQ_INSERT_TAIL( 3871 ruleset->rules[rs_num].active.ptr, 3872 newrule, entries); 3873 else if (pcr->action == PF_CHANGE_ADD_HEAD || 3874 pcr->action == PF_CHANGE_ADD_BEFORE) 3875 TAILQ_INSERT_BEFORE(oldrule, newrule, entries); 3876 else 3877 TAILQ_INSERT_AFTER( 3878 ruleset->rules[rs_num].active.ptr, 3879 oldrule, newrule, entries); 3880 ruleset->rules[rs_num].active.rcount++; 3881 } 3882 3883 nr = 0; 3884 TAILQ_FOREACH(oldrule, 3885 ruleset->rules[rs_num].active.ptr, entries) 3886 oldrule->nr = nr++; 3887 3888 ruleset->rules[rs_num].active.ticket++; 3889 3890 pf_calc_skip_steps(ruleset->rules[rs_num].active.ptr); 3891 pf_remove_if_empty_kruleset(ruleset); 3892 3893 PF_RULES_WUNLOCK(); 3894 PF_CONFIG_UNLOCK(); 3895 break; 3896 3897 #undef ERROUT 3898 DIOCCHANGERULE_error: 3899 PF_RULES_WUNLOCK(); 3900 PF_CONFIG_UNLOCK(); 3901 pf_krule_free(newrule); 3902 pf_kkif_free(kif); 3903 break; 3904 } 3905 3906 case DIOCCLRSTATESNV: { 3907 error = pf_clearstates_nv((struct pfioc_nv *)addr); 3908 break; 3909 } 3910 3911 case DIOCKILLSTATESNV: { 3912 error = pf_killstates_nv((struct pfioc_nv *)addr); 3913 break; 3914 } 3915 3916 case DIOCADDSTATE: { 3917 struct pfioc_state *ps = (struct pfioc_state *)addr; 3918 struct pfsync_state_1301 *sp = &ps->state; 3919 3920 if (sp->timeout >= PFTM_MAX) { 3921 error = EINVAL; 3922 break; 3923 } 3924 if (V_pfsync_state_import_ptr != NULL) { 3925 PF_RULES_RLOCK(); 3926 error = V_pfsync_state_import_ptr( 3927 (union pfsync_state_union *)sp, PFSYNC_SI_IOCTL, 3928 PFSYNC_MSG_VERSION_1301); 3929 PF_RULES_RUNLOCK(); 3930 } else 3931 error = EOPNOTSUPP; 3932 break; 3933 } 3934 3935 case DIOCGETSTATE: { 3936 struct pfioc_state *ps = (struct pfioc_state *)addr; 3937 struct pf_kstate *s; 3938 3939 s = pf_find_state_byid(ps->state.id, ps->state.creatorid); 3940 if (s == NULL) { 3941 error = ENOENT; 3942 break; 3943 } 3944 3945 pfsync_state_export((union pfsync_state_union*)&ps->state, 3946 s, PFSYNC_MSG_VERSION_1301); 3947 PF_STATE_UNLOCK(s); 3948 break; 3949 } 3950 3951 case DIOCGETSTATENV: { 3952 error = pf_getstate((struct pfioc_nv *)addr); 3953 break; 3954 } 3955 3956 #ifdef COMPAT_FREEBSD14 3957 case DIOCGETSTATES: { 3958 struct pfioc_states *ps = (struct pfioc_states *)addr; 3959 struct pf_kstate *s; 3960 struct pfsync_state_1301 *pstore, *p; 3961 int i, nr; 3962 size_t slice_count = 16, count; 3963 void *out; 3964 3965 if (ps->ps_len <= 0) { 3966 nr = uma_zone_get_cur(V_pf_state_z); 3967 ps->ps_len = sizeof(struct pfsync_state_1301) * nr; 3968 break; 3969 } 3970 3971 out = ps->ps_states; 3972 pstore = mallocarray(slice_count, 3973 sizeof(struct pfsync_state_1301), M_TEMP, M_WAITOK | M_ZERO); 3974 nr = 0; 3975 3976 for (i = 0; i <= V_pf_hashmask; i++) { 3977 struct pf_idhash *ih = &V_pf_idhash[i]; 3978 3979 DIOCGETSTATES_retry: 3980 p = pstore; 3981 3982 if (LIST_EMPTY(&ih->states)) 3983 continue; 3984 3985 PF_HASHROW_LOCK(ih); 3986 count = 0; 3987 LIST_FOREACH(s, &ih->states, entry) { 3988 if (s->timeout == PFTM_UNLINKED) 3989 continue; 3990 count++; 3991 } 3992 3993 if (count > slice_count) { 3994 PF_HASHROW_UNLOCK(ih); 3995 free(pstore, M_TEMP); 3996 slice_count = count * 2; 3997 pstore = mallocarray(slice_count, 3998 sizeof(struct pfsync_state_1301), M_TEMP, 3999 M_WAITOK | M_ZERO); 4000 goto DIOCGETSTATES_retry; 4001 } 4002 4003 if ((nr+count) * sizeof(*p) > ps->ps_len) { 4004 PF_HASHROW_UNLOCK(ih); 4005 goto DIOCGETSTATES_full; 4006 } 4007 4008 LIST_FOREACH(s, &ih->states, entry) { 4009 if (s->timeout == PFTM_UNLINKED) 4010 continue; 4011 4012 pfsync_state_export((union pfsync_state_union*)p, 4013 s, PFSYNC_MSG_VERSION_1301); 4014 p++; 4015 nr++; 4016 } 4017 PF_HASHROW_UNLOCK(ih); 4018 error = copyout(pstore, out, 4019 sizeof(struct pfsync_state_1301) * count); 4020 if (error) 4021 break; 4022 out = ps->ps_states + nr; 4023 } 4024 DIOCGETSTATES_full: 4025 ps->ps_len = sizeof(struct pfsync_state_1301) * nr; 4026 free(pstore, M_TEMP); 4027 4028 break; 4029 } 4030 4031 case DIOCGETSTATESV2: { 4032 struct pfioc_states_v2 *ps = (struct pfioc_states_v2 *)addr; 4033 struct pf_kstate *s; 4034 struct pf_state_export *pstore, *p; 4035 int i, nr; 4036 size_t slice_count = 16, count; 4037 void *out; 4038 4039 if (ps->ps_req_version > PF_STATE_VERSION) { 4040 error = ENOTSUP; 4041 break; 4042 } 4043 4044 if (ps->ps_len <= 0) { 4045 nr = uma_zone_get_cur(V_pf_state_z); 4046 ps->ps_len = sizeof(struct pf_state_export) * nr; 4047 break; 4048 } 4049 4050 out = ps->ps_states; 4051 pstore = mallocarray(slice_count, 4052 sizeof(struct pf_state_export), M_TEMP, M_WAITOK | M_ZERO); 4053 nr = 0; 4054 4055 for (i = 0; i <= V_pf_hashmask; i++) { 4056 struct pf_idhash *ih = &V_pf_idhash[i]; 4057 4058 DIOCGETSTATESV2_retry: 4059 p = pstore; 4060 4061 if (LIST_EMPTY(&ih->states)) 4062 continue; 4063 4064 PF_HASHROW_LOCK(ih); 4065 count = 0; 4066 LIST_FOREACH(s, &ih->states, entry) { 4067 if (s->timeout == PFTM_UNLINKED) 4068 continue; 4069 count++; 4070 } 4071 4072 if (count > slice_count) { 4073 PF_HASHROW_UNLOCK(ih); 4074 free(pstore, M_TEMP); 4075 slice_count = count * 2; 4076 pstore = mallocarray(slice_count, 4077 sizeof(struct pf_state_export), M_TEMP, 4078 M_WAITOK | M_ZERO); 4079 goto DIOCGETSTATESV2_retry; 4080 } 4081 4082 if ((nr+count) * sizeof(*p) > ps->ps_len) { 4083 PF_HASHROW_UNLOCK(ih); 4084 goto DIOCGETSTATESV2_full; 4085 } 4086 4087 LIST_FOREACH(s, &ih->states, entry) { 4088 if (s->timeout == PFTM_UNLINKED) 4089 continue; 4090 4091 pf_state_export(p, s); 4092 p++; 4093 nr++; 4094 } 4095 PF_HASHROW_UNLOCK(ih); 4096 error = copyout(pstore, out, 4097 sizeof(struct pf_state_export) * count); 4098 if (error) 4099 break; 4100 out = ps->ps_states + nr; 4101 } 4102 DIOCGETSTATESV2_full: 4103 ps->ps_len = nr * sizeof(struct pf_state_export); 4104 free(pstore, M_TEMP); 4105 4106 break; 4107 } 4108 #endif 4109 case DIOCGETSTATUSNV: { 4110 error = pf_getstatus((struct pfioc_nv *)addr); 4111 break; 4112 } 4113 4114 case DIOCSETSTATUSIF: { 4115 struct pfioc_if *pi = (struct pfioc_if *)addr; 4116 4117 if (pi->ifname[0] == 0) { 4118 bzero(V_pf_status.ifname, IFNAMSIZ); 4119 break; 4120 } 4121 PF_RULES_WLOCK(); 4122 error = pf_user_strcpy(V_pf_status.ifname, pi->ifname, IFNAMSIZ); 4123 PF_RULES_WUNLOCK(); 4124 break; 4125 } 4126 4127 case DIOCCLRSTATUS: { 4128 pf_ioctl_clear_status(); 4129 break; 4130 } 4131 4132 case DIOCNATLOOK: { 4133 struct pfioc_natlook *pnl = (struct pfioc_natlook *)addr; 4134 struct pf_state_key *sk; 4135 struct pf_kstate *state; 4136 struct pf_state_key_cmp key; 4137 int m = 0, direction = pnl->direction; 4138 int sidx, didx; 4139 4140 /* NATLOOK src and dst are reversed, so reverse sidx/didx */ 4141 sidx = (direction == PF_IN) ? 1 : 0; 4142 didx = (direction == PF_IN) ? 0 : 1; 4143 4144 if (!pnl->proto || 4145 PF_AZERO(&pnl->saddr, pnl->af) || 4146 PF_AZERO(&pnl->daddr, pnl->af) || 4147 ((pnl->proto == IPPROTO_TCP || 4148 pnl->proto == IPPROTO_UDP) && 4149 (!pnl->dport || !pnl->sport))) 4150 error = EINVAL; 4151 else { 4152 bzero(&key, sizeof(key)); 4153 key.af = pnl->af; 4154 key.proto = pnl->proto; 4155 PF_ACPY(&key.addr[sidx], &pnl->saddr, pnl->af); 4156 key.port[sidx] = pnl->sport; 4157 PF_ACPY(&key.addr[didx], &pnl->daddr, pnl->af); 4158 key.port[didx] = pnl->dport; 4159 4160 state = pf_find_state_all(&key, direction, &m); 4161 if (state == NULL) { 4162 error = ENOENT; 4163 } else { 4164 if (m > 1) { 4165 PF_STATE_UNLOCK(state); 4166 error = E2BIG; /* more than one state */ 4167 } else { 4168 sk = state->key[sidx]; 4169 PF_ACPY(&pnl->rsaddr, &sk->addr[sidx], sk->af); 4170 pnl->rsport = sk->port[sidx]; 4171 PF_ACPY(&pnl->rdaddr, &sk->addr[didx], sk->af); 4172 pnl->rdport = sk->port[didx]; 4173 PF_STATE_UNLOCK(state); 4174 } 4175 } 4176 } 4177 break; 4178 } 4179 4180 case DIOCSETTIMEOUT: { 4181 struct pfioc_tm *pt = (struct pfioc_tm *)addr; 4182 4183 error = pf_ioctl_set_timeout(pt->timeout, pt->seconds, 4184 &pt->seconds); 4185 break; 4186 } 4187 4188 case DIOCGETTIMEOUT: { 4189 struct pfioc_tm *pt = (struct pfioc_tm *)addr; 4190 4191 error = pf_ioctl_get_timeout(pt->timeout, &pt->seconds); 4192 break; 4193 } 4194 4195 case DIOCGETLIMIT: { 4196 struct pfioc_limit *pl = (struct pfioc_limit *)addr; 4197 4198 error = pf_ioctl_get_limit(pl->index, &pl->limit); 4199 break; 4200 } 4201 4202 case DIOCSETLIMIT: { 4203 struct pfioc_limit *pl = (struct pfioc_limit *)addr; 4204 unsigned int old_limit; 4205 4206 error = pf_ioctl_set_limit(pl->index, pl->limit, &old_limit); 4207 pl->limit = old_limit; 4208 break; 4209 } 4210 4211 case DIOCSETDEBUG: { 4212 u_int32_t *level = (u_int32_t *)addr; 4213 4214 PF_RULES_WLOCK(); 4215 V_pf_status.debug = *level; 4216 PF_RULES_WUNLOCK(); 4217 break; 4218 } 4219 4220 case DIOCCLRRULECTRS: { 4221 /* obsoleted by DIOCGETRULE with action=PF_GET_CLR_CNTR */ 4222 struct pf_kruleset *ruleset = &pf_main_ruleset; 4223 struct pf_krule *rule; 4224 4225 PF_RULES_WLOCK(); 4226 TAILQ_FOREACH(rule, 4227 ruleset->rules[PF_RULESET_FILTER].active.ptr, entries) { 4228 pf_counter_u64_zero(&rule->evaluations); 4229 for (int i = 0; i < 2; i++) { 4230 pf_counter_u64_zero(&rule->packets[i]); 4231 pf_counter_u64_zero(&rule->bytes[i]); 4232 } 4233 } 4234 PF_RULES_WUNLOCK(); 4235 break; 4236 } 4237 4238 case DIOCGIFSPEEDV0: 4239 case DIOCGIFSPEEDV1: { 4240 struct pf_ifspeed_v1 *psp = (struct pf_ifspeed_v1 *)addr; 4241 struct pf_ifspeed_v1 ps; 4242 struct ifnet *ifp; 4243 4244 if (psp->ifname[0] == '\0') { 4245 error = EINVAL; 4246 break; 4247 } 4248 4249 error = pf_user_strcpy(ps.ifname, psp->ifname, IFNAMSIZ); 4250 if (error != 0) 4251 break; 4252 ifp = ifunit(ps.ifname); 4253 if (ifp != NULL) { 4254 psp->baudrate32 = 4255 (u_int32_t)uqmin(ifp->if_baudrate, UINT_MAX); 4256 if (cmd == DIOCGIFSPEEDV1) 4257 psp->baudrate = ifp->if_baudrate; 4258 } else { 4259 error = EINVAL; 4260 } 4261 break; 4262 } 4263 4264 #ifdef ALTQ 4265 case DIOCSTARTALTQ: { 4266 struct pf_altq *altq; 4267 4268 PF_RULES_WLOCK(); 4269 /* enable all altq interfaces on active list */ 4270 TAILQ_FOREACH(altq, V_pf_altq_ifs_active, entries) { 4271 if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) { 4272 error = pf_enable_altq(altq); 4273 if (error != 0) 4274 break; 4275 } 4276 } 4277 if (error == 0) 4278 V_pf_altq_running = 1; 4279 PF_RULES_WUNLOCK(); 4280 DPFPRINTF(PF_DEBUG_MISC, ("altq: started\n")); 4281 break; 4282 } 4283 4284 case DIOCSTOPALTQ: { 4285 struct pf_altq *altq; 4286 4287 PF_RULES_WLOCK(); 4288 /* disable all altq interfaces on active list */ 4289 TAILQ_FOREACH(altq, V_pf_altq_ifs_active, entries) { 4290 if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) { 4291 error = pf_disable_altq(altq); 4292 if (error != 0) 4293 break; 4294 } 4295 } 4296 if (error == 0) 4297 V_pf_altq_running = 0; 4298 PF_RULES_WUNLOCK(); 4299 DPFPRINTF(PF_DEBUG_MISC, ("altq: stopped\n")); 4300 break; 4301 } 4302 4303 case DIOCADDALTQV0: 4304 case DIOCADDALTQV1: { 4305 struct pfioc_altq_v1 *pa = (struct pfioc_altq_v1 *)addr; 4306 struct pf_altq *altq, *a; 4307 struct ifnet *ifp; 4308 4309 altq = malloc(sizeof(*altq), M_PFALTQ, M_WAITOK | M_ZERO); 4310 error = pf_import_kaltq(pa, altq, IOCPARM_LEN(cmd)); 4311 if (error) 4312 break; 4313 altq->local_flags = 0; 4314 4315 PF_RULES_WLOCK(); 4316 if (pa->ticket != V_ticket_altqs_inactive) { 4317 PF_RULES_WUNLOCK(); 4318 free(altq, M_PFALTQ); 4319 error = EBUSY; 4320 break; 4321 } 4322 4323 /* 4324 * if this is for a queue, find the discipline and 4325 * copy the necessary fields 4326 */ 4327 if (altq->qname[0] != 0) { 4328 if ((altq->qid = pf_qname2qid(altq->qname)) == 0) { 4329 PF_RULES_WUNLOCK(); 4330 error = EBUSY; 4331 free(altq, M_PFALTQ); 4332 break; 4333 } 4334 altq->altq_disc = NULL; 4335 TAILQ_FOREACH(a, V_pf_altq_ifs_inactive, entries) { 4336 if (strncmp(a->ifname, altq->ifname, 4337 IFNAMSIZ) == 0) { 4338 altq->altq_disc = a->altq_disc; 4339 break; 4340 } 4341 } 4342 } 4343 4344 if ((ifp = ifunit(altq->ifname)) == NULL) 4345 altq->local_flags |= PFALTQ_FLAG_IF_REMOVED; 4346 else 4347 error = altq_add(ifp, altq); 4348 4349 if (error) { 4350 PF_RULES_WUNLOCK(); 4351 free(altq, M_PFALTQ); 4352 break; 4353 } 4354 4355 if (altq->qname[0] != 0) 4356 TAILQ_INSERT_TAIL(V_pf_altqs_inactive, altq, entries); 4357 else 4358 TAILQ_INSERT_TAIL(V_pf_altq_ifs_inactive, altq, entries); 4359 /* version error check done on import above */ 4360 pf_export_kaltq(altq, pa, IOCPARM_LEN(cmd)); 4361 PF_RULES_WUNLOCK(); 4362 break; 4363 } 4364 4365 case DIOCGETALTQSV0: 4366 case DIOCGETALTQSV1: { 4367 struct pfioc_altq_v1 *pa = (struct pfioc_altq_v1 *)addr; 4368 struct pf_altq *altq; 4369 4370 PF_RULES_RLOCK(); 4371 pa->nr = 0; 4372 TAILQ_FOREACH(altq, V_pf_altq_ifs_active, entries) 4373 pa->nr++; 4374 TAILQ_FOREACH(altq, V_pf_altqs_active, entries) 4375 pa->nr++; 4376 pa->ticket = V_ticket_altqs_active; 4377 PF_RULES_RUNLOCK(); 4378 break; 4379 } 4380 4381 case DIOCGETALTQV0: 4382 case DIOCGETALTQV1: { 4383 struct pfioc_altq_v1 *pa = (struct pfioc_altq_v1 *)addr; 4384 struct pf_altq *altq; 4385 4386 PF_RULES_RLOCK(); 4387 if (pa->ticket != V_ticket_altqs_active) { 4388 PF_RULES_RUNLOCK(); 4389 error = EBUSY; 4390 break; 4391 } 4392 altq = pf_altq_get_nth_active(pa->nr); 4393 if (altq == NULL) { 4394 PF_RULES_RUNLOCK(); 4395 error = EBUSY; 4396 break; 4397 } 4398 pf_export_kaltq(altq, pa, IOCPARM_LEN(cmd)); 4399 PF_RULES_RUNLOCK(); 4400 break; 4401 } 4402 4403 case DIOCCHANGEALTQV0: 4404 case DIOCCHANGEALTQV1: 4405 /* CHANGEALTQ not supported yet! */ 4406 error = ENODEV; 4407 break; 4408 4409 case DIOCGETQSTATSV0: 4410 case DIOCGETQSTATSV1: { 4411 struct pfioc_qstats_v1 *pq = (struct pfioc_qstats_v1 *)addr; 4412 struct pf_altq *altq; 4413 int nbytes; 4414 u_int32_t version; 4415 4416 PF_RULES_RLOCK(); 4417 if (pq->ticket != V_ticket_altqs_active) { 4418 PF_RULES_RUNLOCK(); 4419 error = EBUSY; 4420 break; 4421 } 4422 nbytes = pq->nbytes; 4423 altq = pf_altq_get_nth_active(pq->nr); 4424 if (altq == NULL) { 4425 PF_RULES_RUNLOCK(); 4426 error = EBUSY; 4427 break; 4428 } 4429 4430 if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) != 0) { 4431 PF_RULES_RUNLOCK(); 4432 error = ENXIO; 4433 break; 4434 } 4435 PF_RULES_RUNLOCK(); 4436 if (cmd == DIOCGETQSTATSV0) 4437 version = 0; /* DIOCGETQSTATSV0 means stats struct v0 */ 4438 else 4439 version = pq->version; 4440 error = altq_getqstats(altq, pq->buf, &nbytes, version); 4441 if (error == 0) { 4442 pq->scheduler = altq->scheduler; 4443 pq->nbytes = nbytes; 4444 } 4445 break; 4446 } 4447 #endif /* ALTQ */ 4448 4449 case DIOCBEGINADDRS: { 4450 struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr; 4451 4452 error = pf_ioctl_begin_addrs(&pp->ticket); 4453 break; 4454 } 4455 4456 case DIOCADDADDR: { 4457 struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr; 4458 struct pf_nl_pooladdr npp = {}; 4459 4460 npp.which = PF_RDR; 4461 memcpy(&npp, pp, sizeof(*pp)); 4462 error = pf_ioctl_add_addr(&npp); 4463 break; 4464 } 4465 4466 case DIOCGETADDRS: { 4467 struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr; 4468 struct pf_nl_pooladdr npp = {}; 4469 4470 npp.which = PF_RDR; 4471 memcpy(&npp, pp, sizeof(*pp)); 4472 error = pf_ioctl_get_addrs(&npp); 4473 memcpy(pp, &npp, sizeof(*pp)); 4474 4475 break; 4476 } 4477 4478 case DIOCGETADDR: { 4479 struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr; 4480 struct pf_nl_pooladdr npp = {}; 4481 4482 npp.which = PF_RDR; 4483 memcpy(&npp, pp, sizeof(*pp)); 4484 error = pf_ioctl_get_addr(&npp); 4485 memcpy(pp, &npp, sizeof(*pp)); 4486 4487 break; 4488 } 4489 4490 case DIOCCHANGEADDR: { 4491 struct pfioc_pooladdr *pca = (struct pfioc_pooladdr *)addr; 4492 struct pf_kpool *pool; 4493 struct pf_kpooladdr *oldpa = NULL, *newpa = NULL; 4494 struct pf_kruleset *ruleset; 4495 struct pfi_kkif *kif = NULL; 4496 4497 pca->anchor[sizeof(pca->anchor) - 1] = 0; 4498 4499 if (pca->action < PF_CHANGE_ADD_HEAD || 4500 pca->action > PF_CHANGE_REMOVE) { 4501 error = EINVAL; 4502 break; 4503 } 4504 if (pca->addr.addr.type != PF_ADDR_ADDRMASK && 4505 pca->addr.addr.type != PF_ADDR_DYNIFTL && 4506 pca->addr.addr.type != PF_ADDR_TABLE) { 4507 error = EINVAL; 4508 break; 4509 } 4510 if (pca->addr.addr.p.dyn != NULL) { 4511 error = EINVAL; 4512 break; 4513 } 4514 4515 if (pca->action != PF_CHANGE_REMOVE) { 4516 #ifndef INET 4517 if (pca->af == AF_INET) { 4518 error = EAFNOSUPPORT; 4519 break; 4520 } 4521 #endif /* INET */ 4522 #ifndef INET6 4523 if (pca->af == AF_INET6) { 4524 error = EAFNOSUPPORT; 4525 break; 4526 } 4527 #endif /* INET6 */ 4528 newpa = malloc(sizeof(*newpa), M_PFRULE, M_WAITOK); 4529 bcopy(&pca->addr, newpa, sizeof(struct pf_pooladdr)); 4530 if (newpa->ifname[0]) 4531 kif = pf_kkif_create(M_WAITOK); 4532 newpa->kif = NULL; 4533 } 4534 #define ERROUT(x) ERROUT_IOCTL(DIOCCHANGEADDR_error, x) 4535 PF_RULES_WLOCK(); 4536 ruleset = pf_find_kruleset(pca->anchor); 4537 if (ruleset == NULL) 4538 ERROUT(EBUSY); 4539 4540 pool = pf_get_kpool(pca->anchor, pca->ticket, pca->r_action, 4541 pca->r_num, pca->r_last, 1, 1, PF_RDR); 4542 if (pool == NULL) 4543 ERROUT(EBUSY); 4544 4545 if (pca->action != PF_CHANGE_REMOVE) { 4546 if (newpa->ifname[0]) { 4547 newpa->kif = pfi_kkif_attach(kif, newpa->ifname); 4548 pfi_kkif_ref(newpa->kif); 4549 kif = NULL; 4550 } 4551 4552 switch (newpa->addr.type) { 4553 case PF_ADDR_DYNIFTL: 4554 error = pfi_dynaddr_setup(&newpa->addr, 4555 pca->af); 4556 break; 4557 case PF_ADDR_TABLE: 4558 newpa->addr.p.tbl = pfr_attach_table(ruleset, 4559 newpa->addr.v.tblname); 4560 if (newpa->addr.p.tbl == NULL) 4561 error = ENOMEM; 4562 break; 4563 } 4564 if (error) 4565 goto DIOCCHANGEADDR_error; 4566 } 4567 4568 switch (pca->action) { 4569 case PF_CHANGE_ADD_HEAD: 4570 oldpa = TAILQ_FIRST(&pool->list); 4571 break; 4572 case PF_CHANGE_ADD_TAIL: 4573 oldpa = TAILQ_LAST(&pool->list, pf_kpalist); 4574 break; 4575 default: 4576 oldpa = TAILQ_FIRST(&pool->list); 4577 for (int i = 0; oldpa && i < pca->nr; i++) 4578 oldpa = TAILQ_NEXT(oldpa, entries); 4579 4580 if (oldpa == NULL) 4581 ERROUT(EINVAL); 4582 } 4583 4584 if (pca->action == PF_CHANGE_REMOVE) { 4585 TAILQ_REMOVE(&pool->list, oldpa, entries); 4586 switch (oldpa->addr.type) { 4587 case PF_ADDR_DYNIFTL: 4588 pfi_dynaddr_remove(oldpa->addr.p.dyn); 4589 break; 4590 case PF_ADDR_TABLE: 4591 pfr_detach_table(oldpa->addr.p.tbl); 4592 break; 4593 } 4594 if (oldpa->kif) 4595 pfi_kkif_unref(oldpa->kif); 4596 free(oldpa, M_PFRULE); 4597 } else { 4598 if (oldpa == NULL) 4599 TAILQ_INSERT_TAIL(&pool->list, newpa, entries); 4600 else if (pca->action == PF_CHANGE_ADD_HEAD || 4601 pca->action == PF_CHANGE_ADD_BEFORE) 4602 TAILQ_INSERT_BEFORE(oldpa, newpa, entries); 4603 else 4604 TAILQ_INSERT_AFTER(&pool->list, oldpa, 4605 newpa, entries); 4606 } 4607 4608 pool->cur = TAILQ_FIRST(&pool->list); 4609 PF_ACPY(&pool->counter, &pool->cur->addr.v.a.addr, pca->af); 4610 PF_RULES_WUNLOCK(); 4611 break; 4612 4613 #undef ERROUT 4614 DIOCCHANGEADDR_error: 4615 if (newpa != NULL) { 4616 if (newpa->kif) 4617 pfi_kkif_unref(newpa->kif); 4618 free(newpa, M_PFRULE); 4619 } 4620 PF_RULES_WUNLOCK(); 4621 pf_kkif_free(kif); 4622 break; 4623 } 4624 4625 case DIOCGETRULESETS: { 4626 struct pfioc_ruleset *pr = (struct pfioc_ruleset *)addr; 4627 4628 pr->path[sizeof(pr->path) - 1] = 0; 4629 4630 error = pf_ioctl_get_rulesets(pr); 4631 break; 4632 } 4633 4634 case DIOCGETRULESET: { 4635 struct pfioc_ruleset *pr = (struct pfioc_ruleset *)addr; 4636 4637 pr->path[sizeof(pr->path) - 1] = 0; 4638 4639 error = pf_ioctl_get_ruleset(pr); 4640 break; 4641 } 4642 4643 case DIOCRCLRTABLES: { 4644 struct pfioc_table *io = (struct pfioc_table *)addr; 4645 4646 if (io->pfrio_esize != 0) { 4647 error = ENODEV; 4648 break; 4649 } 4650 PF_RULES_WLOCK(); 4651 error = pfr_clr_tables(&io->pfrio_table, &io->pfrio_ndel, 4652 io->pfrio_flags | PFR_FLAG_USERIOCTL); 4653 PF_RULES_WUNLOCK(); 4654 break; 4655 } 4656 4657 case DIOCRADDTABLES: { 4658 struct pfioc_table *io = (struct pfioc_table *)addr; 4659 struct pfr_table *pfrts; 4660 size_t totlen; 4661 4662 if (io->pfrio_esize != sizeof(struct pfr_table)) { 4663 error = ENODEV; 4664 break; 4665 } 4666 4667 if (io->pfrio_size < 0 || io->pfrio_size > pf_ioctl_maxcount || 4668 WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_table))) { 4669 error = ENOMEM; 4670 break; 4671 } 4672 4673 totlen = io->pfrio_size * sizeof(struct pfr_table); 4674 pfrts = mallocarray(io->pfrio_size, sizeof(struct pfr_table), 4675 M_TEMP, M_WAITOK); 4676 error = copyin(io->pfrio_buffer, pfrts, totlen); 4677 if (error) { 4678 free(pfrts, M_TEMP); 4679 break; 4680 } 4681 PF_RULES_WLOCK(); 4682 error = pfr_add_tables(pfrts, io->pfrio_size, 4683 &io->pfrio_nadd, io->pfrio_flags | PFR_FLAG_USERIOCTL); 4684 PF_RULES_WUNLOCK(); 4685 free(pfrts, M_TEMP); 4686 break; 4687 } 4688 4689 case DIOCRDELTABLES: { 4690 struct pfioc_table *io = (struct pfioc_table *)addr; 4691 struct pfr_table *pfrts; 4692 size_t totlen; 4693 4694 if (io->pfrio_esize != sizeof(struct pfr_table)) { 4695 error = ENODEV; 4696 break; 4697 } 4698 4699 if (io->pfrio_size < 0 || io->pfrio_size > pf_ioctl_maxcount || 4700 WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_table))) { 4701 error = ENOMEM; 4702 break; 4703 } 4704 4705 totlen = io->pfrio_size * sizeof(struct pfr_table); 4706 pfrts = mallocarray(io->pfrio_size, sizeof(struct pfr_table), 4707 M_TEMP, M_WAITOK); 4708 error = copyin(io->pfrio_buffer, pfrts, totlen); 4709 if (error) { 4710 free(pfrts, M_TEMP); 4711 break; 4712 } 4713 PF_RULES_WLOCK(); 4714 error = pfr_del_tables(pfrts, io->pfrio_size, 4715 &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL); 4716 PF_RULES_WUNLOCK(); 4717 free(pfrts, M_TEMP); 4718 break; 4719 } 4720 4721 case DIOCRGETTABLES: { 4722 struct pfioc_table *io = (struct pfioc_table *)addr; 4723 struct pfr_table *pfrts; 4724 size_t totlen; 4725 int n; 4726 4727 if (io->pfrio_esize != sizeof(struct pfr_table)) { 4728 error = ENODEV; 4729 break; 4730 } 4731 PF_RULES_RLOCK(); 4732 n = pfr_table_count(&io->pfrio_table, io->pfrio_flags); 4733 if (n < 0) { 4734 PF_RULES_RUNLOCK(); 4735 error = EINVAL; 4736 break; 4737 } 4738 io->pfrio_size = min(io->pfrio_size, n); 4739 4740 totlen = io->pfrio_size * sizeof(struct pfr_table); 4741 4742 pfrts = mallocarray(io->pfrio_size, sizeof(struct pfr_table), 4743 M_TEMP, M_NOWAIT | M_ZERO); 4744 if (pfrts == NULL) { 4745 error = ENOMEM; 4746 PF_RULES_RUNLOCK(); 4747 break; 4748 } 4749 error = pfr_get_tables(&io->pfrio_table, pfrts, 4750 &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL); 4751 PF_RULES_RUNLOCK(); 4752 if (error == 0) 4753 error = copyout(pfrts, io->pfrio_buffer, totlen); 4754 free(pfrts, M_TEMP); 4755 break; 4756 } 4757 4758 case DIOCRGETTSTATS: { 4759 struct pfioc_table *io = (struct pfioc_table *)addr; 4760 struct pfr_tstats *pfrtstats; 4761 size_t totlen; 4762 int n; 4763 4764 if (io->pfrio_esize != sizeof(struct pfr_tstats)) { 4765 error = ENODEV; 4766 break; 4767 } 4768 PF_TABLE_STATS_LOCK(); 4769 PF_RULES_RLOCK(); 4770 n = pfr_table_count(&io->pfrio_table, io->pfrio_flags); 4771 if (n < 0) { 4772 PF_RULES_RUNLOCK(); 4773 PF_TABLE_STATS_UNLOCK(); 4774 error = EINVAL; 4775 break; 4776 } 4777 io->pfrio_size = min(io->pfrio_size, n); 4778 4779 totlen = io->pfrio_size * sizeof(struct pfr_tstats); 4780 pfrtstats = mallocarray(io->pfrio_size, 4781 sizeof(struct pfr_tstats), M_TEMP, M_NOWAIT | M_ZERO); 4782 if (pfrtstats == NULL) { 4783 error = ENOMEM; 4784 PF_RULES_RUNLOCK(); 4785 PF_TABLE_STATS_UNLOCK(); 4786 break; 4787 } 4788 error = pfr_get_tstats(&io->pfrio_table, pfrtstats, 4789 &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL); 4790 PF_RULES_RUNLOCK(); 4791 PF_TABLE_STATS_UNLOCK(); 4792 if (error == 0) 4793 error = copyout(pfrtstats, io->pfrio_buffer, totlen); 4794 free(pfrtstats, M_TEMP); 4795 break; 4796 } 4797 4798 case DIOCRCLRTSTATS: { 4799 struct pfioc_table *io = (struct pfioc_table *)addr; 4800 struct pfr_table *pfrts; 4801 size_t totlen; 4802 4803 if (io->pfrio_esize != sizeof(struct pfr_table)) { 4804 error = ENODEV; 4805 break; 4806 } 4807 4808 if (io->pfrio_size < 0 || io->pfrio_size > pf_ioctl_maxcount || 4809 WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_table))) { 4810 /* We used to count tables and use the minimum required 4811 * size, so we didn't fail on overly large requests. 4812 * Keep doing so. */ 4813 io->pfrio_size = pf_ioctl_maxcount; 4814 break; 4815 } 4816 4817 totlen = io->pfrio_size * sizeof(struct pfr_table); 4818 pfrts = mallocarray(io->pfrio_size, sizeof(struct pfr_table), 4819 M_TEMP, M_WAITOK); 4820 error = copyin(io->pfrio_buffer, pfrts, totlen); 4821 if (error) { 4822 free(pfrts, M_TEMP); 4823 break; 4824 } 4825 4826 PF_TABLE_STATS_LOCK(); 4827 PF_RULES_RLOCK(); 4828 error = pfr_clr_tstats(pfrts, io->pfrio_size, 4829 &io->pfrio_nzero, io->pfrio_flags | PFR_FLAG_USERIOCTL); 4830 PF_RULES_RUNLOCK(); 4831 PF_TABLE_STATS_UNLOCK(); 4832 free(pfrts, M_TEMP); 4833 break; 4834 } 4835 4836 case DIOCRSETTFLAGS: { 4837 struct pfioc_table *io = (struct pfioc_table *)addr; 4838 struct pfr_table *pfrts; 4839 size_t totlen; 4840 int n; 4841 4842 if (io->pfrio_esize != sizeof(struct pfr_table)) { 4843 error = ENODEV; 4844 break; 4845 } 4846 4847 PF_RULES_RLOCK(); 4848 n = pfr_table_count(&io->pfrio_table, io->pfrio_flags); 4849 if (n < 0) { 4850 PF_RULES_RUNLOCK(); 4851 error = EINVAL; 4852 break; 4853 } 4854 4855 io->pfrio_size = min(io->pfrio_size, n); 4856 PF_RULES_RUNLOCK(); 4857 4858 totlen = io->pfrio_size * sizeof(struct pfr_table); 4859 pfrts = mallocarray(io->pfrio_size, sizeof(struct pfr_table), 4860 M_TEMP, M_WAITOK); 4861 error = copyin(io->pfrio_buffer, pfrts, totlen); 4862 if (error) { 4863 free(pfrts, M_TEMP); 4864 break; 4865 } 4866 PF_RULES_WLOCK(); 4867 error = pfr_set_tflags(pfrts, io->pfrio_size, 4868 io->pfrio_setflag, io->pfrio_clrflag, &io->pfrio_nchange, 4869 &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL); 4870 PF_RULES_WUNLOCK(); 4871 free(pfrts, M_TEMP); 4872 break; 4873 } 4874 4875 case DIOCRCLRADDRS: { 4876 struct pfioc_table *io = (struct pfioc_table *)addr; 4877 4878 if (io->pfrio_esize != 0) { 4879 error = ENODEV; 4880 break; 4881 } 4882 PF_RULES_WLOCK(); 4883 error = pfr_clr_addrs(&io->pfrio_table, &io->pfrio_ndel, 4884 io->pfrio_flags | PFR_FLAG_USERIOCTL); 4885 PF_RULES_WUNLOCK(); 4886 break; 4887 } 4888 4889 case DIOCRADDADDRS: { 4890 struct pfioc_table *io = (struct pfioc_table *)addr; 4891 struct pfr_addr *pfras; 4892 size_t totlen; 4893 4894 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 4895 error = ENODEV; 4896 break; 4897 } 4898 if (io->pfrio_size < 0 || 4899 io->pfrio_size > pf_ioctl_maxcount || 4900 WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_addr))) { 4901 error = EINVAL; 4902 break; 4903 } 4904 totlen = io->pfrio_size * sizeof(struct pfr_addr); 4905 pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr), 4906 M_TEMP, M_WAITOK); 4907 error = copyin(io->pfrio_buffer, pfras, totlen); 4908 if (error) { 4909 free(pfras, M_TEMP); 4910 break; 4911 } 4912 PF_RULES_WLOCK(); 4913 error = pfr_add_addrs(&io->pfrio_table, pfras, 4914 io->pfrio_size, &io->pfrio_nadd, io->pfrio_flags | 4915 PFR_FLAG_USERIOCTL); 4916 PF_RULES_WUNLOCK(); 4917 if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK) 4918 error = copyout(pfras, io->pfrio_buffer, totlen); 4919 free(pfras, M_TEMP); 4920 break; 4921 } 4922 4923 case DIOCRDELADDRS: { 4924 struct pfioc_table *io = (struct pfioc_table *)addr; 4925 struct pfr_addr *pfras; 4926 size_t totlen; 4927 4928 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 4929 error = ENODEV; 4930 break; 4931 } 4932 if (io->pfrio_size < 0 || 4933 io->pfrio_size > pf_ioctl_maxcount || 4934 WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_addr))) { 4935 error = EINVAL; 4936 break; 4937 } 4938 totlen = io->pfrio_size * sizeof(struct pfr_addr); 4939 pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr), 4940 M_TEMP, M_WAITOK); 4941 error = copyin(io->pfrio_buffer, pfras, totlen); 4942 if (error) { 4943 free(pfras, M_TEMP); 4944 break; 4945 } 4946 PF_RULES_WLOCK(); 4947 error = pfr_del_addrs(&io->pfrio_table, pfras, 4948 io->pfrio_size, &io->pfrio_ndel, io->pfrio_flags | 4949 PFR_FLAG_USERIOCTL); 4950 PF_RULES_WUNLOCK(); 4951 if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK) 4952 error = copyout(pfras, io->pfrio_buffer, totlen); 4953 free(pfras, M_TEMP); 4954 break; 4955 } 4956 4957 case DIOCRSETADDRS: { 4958 struct pfioc_table *io = (struct pfioc_table *)addr; 4959 struct pfr_addr *pfras; 4960 size_t totlen, count; 4961 4962 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 4963 error = ENODEV; 4964 break; 4965 } 4966 if (io->pfrio_size < 0 || io->pfrio_size2 < 0) { 4967 error = EINVAL; 4968 break; 4969 } 4970 count = max(io->pfrio_size, io->pfrio_size2); 4971 if (count > pf_ioctl_maxcount || 4972 WOULD_OVERFLOW(count, sizeof(struct pfr_addr))) { 4973 error = EINVAL; 4974 break; 4975 } 4976 totlen = count * sizeof(struct pfr_addr); 4977 pfras = mallocarray(count, sizeof(struct pfr_addr), M_TEMP, 4978 M_WAITOK); 4979 error = copyin(io->pfrio_buffer, pfras, totlen); 4980 if (error) { 4981 free(pfras, M_TEMP); 4982 break; 4983 } 4984 PF_RULES_WLOCK(); 4985 error = pfr_set_addrs(&io->pfrio_table, pfras, 4986 io->pfrio_size, &io->pfrio_size2, &io->pfrio_nadd, 4987 &io->pfrio_ndel, &io->pfrio_nchange, io->pfrio_flags | 4988 PFR_FLAG_USERIOCTL, 0); 4989 PF_RULES_WUNLOCK(); 4990 if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK) 4991 error = copyout(pfras, io->pfrio_buffer, totlen); 4992 free(pfras, M_TEMP); 4993 break; 4994 } 4995 4996 case DIOCRGETADDRS: { 4997 struct pfioc_table *io = (struct pfioc_table *)addr; 4998 struct pfr_addr *pfras; 4999 size_t totlen; 5000 5001 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 5002 error = ENODEV; 5003 break; 5004 } 5005 if (io->pfrio_size < 0 || 5006 io->pfrio_size > pf_ioctl_maxcount || 5007 WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_addr))) { 5008 error = EINVAL; 5009 break; 5010 } 5011 totlen = io->pfrio_size * sizeof(struct pfr_addr); 5012 pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr), 5013 M_TEMP, M_WAITOK | M_ZERO); 5014 PF_RULES_RLOCK(); 5015 error = pfr_get_addrs(&io->pfrio_table, pfras, 5016 &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL); 5017 PF_RULES_RUNLOCK(); 5018 if (error == 0) 5019 error = copyout(pfras, io->pfrio_buffer, totlen); 5020 free(pfras, M_TEMP); 5021 break; 5022 } 5023 5024 case DIOCRGETASTATS: { 5025 struct pfioc_table *io = (struct pfioc_table *)addr; 5026 struct pfr_astats *pfrastats; 5027 size_t totlen; 5028 5029 if (io->pfrio_esize != sizeof(struct pfr_astats)) { 5030 error = ENODEV; 5031 break; 5032 } 5033 if (io->pfrio_size < 0 || 5034 io->pfrio_size > pf_ioctl_maxcount || 5035 WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_astats))) { 5036 error = EINVAL; 5037 break; 5038 } 5039 totlen = io->pfrio_size * sizeof(struct pfr_astats); 5040 pfrastats = mallocarray(io->pfrio_size, 5041 sizeof(struct pfr_astats), M_TEMP, M_WAITOK | M_ZERO); 5042 PF_RULES_RLOCK(); 5043 error = pfr_get_astats(&io->pfrio_table, pfrastats, 5044 &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL); 5045 PF_RULES_RUNLOCK(); 5046 if (error == 0) 5047 error = copyout(pfrastats, io->pfrio_buffer, totlen); 5048 free(pfrastats, M_TEMP); 5049 break; 5050 } 5051 5052 case DIOCRCLRASTATS: { 5053 struct pfioc_table *io = (struct pfioc_table *)addr; 5054 struct pfr_addr *pfras; 5055 size_t totlen; 5056 5057 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 5058 error = ENODEV; 5059 break; 5060 } 5061 if (io->pfrio_size < 0 || 5062 io->pfrio_size > pf_ioctl_maxcount || 5063 WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_addr))) { 5064 error = EINVAL; 5065 break; 5066 } 5067 totlen = io->pfrio_size * sizeof(struct pfr_addr); 5068 pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr), 5069 M_TEMP, M_WAITOK); 5070 error = copyin(io->pfrio_buffer, pfras, totlen); 5071 if (error) { 5072 free(pfras, M_TEMP); 5073 break; 5074 } 5075 PF_RULES_WLOCK(); 5076 error = pfr_clr_astats(&io->pfrio_table, pfras, 5077 io->pfrio_size, &io->pfrio_nzero, io->pfrio_flags | 5078 PFR_FLAG_USERIOCTL); 5079 PF_RULES_WUNLOCK(); 5080 if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK) 5081 error = copyout(pfras, io->pfrio_buffer, totlen); 5082 free(pfras, M_TEMP); 5083 break; 5084 } 5085 5086 case DIOCRTSTADDRS: { 5087 struct pfioc_table *io = (struct pfioc_table *)addr; 5088 struct pfr_addr *pfras; 5089 size_t totlen; 5090 5091 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 5092 error = ENODEV; 5093 break; 5094 } 5095 if (io->pfrio_size < 0 || 5096 io->pfrio_size > pf_ioctl_maxcount || 5097 WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_addr))) { 5098 error = EINVAL; 5099 break; 5100 } 5101 totlen = io->pfrio_size * sizeof(struct pfr_addr); 5102 pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr), 5103 M_TEMP, M_WAITOK); 5104 error = copyin(io->pfrio_buffer, pfras, totlen); 5105 if (error) { 5106 free(pfras, M_TEMP); 5107 break; 5108 } 5109 PF_RULES_RLOCK(); 5110 error = pfr_tst_addrs(&io->pfrio_table, pfras, 5111 io->pfrio_size, &io->pfrio_nmatch, io->pfrio_flags | 5112 PFR_FLAG_USERIOCTL); 5113 PF_RULES_RUNLOCK(); 5114 if (error == 0) 5115 error = copyout(pfras, io->pfrio_buffer, totlen); 5116 free(pfras, M_TEMP); 5117 break; 5118 } 5119 5120 case DIOCRINADEFINE: { 5121 struct pfioc_table *io = (struct pfioc_table *)addr; 5122 struct pfr_addr *pfras; 5123 size_t totlen; 5124 5125 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 5126 error = ENODEV; 5127 break; 5128 } 5129 if (io->pfrio_size < 0 || 5130 io->pfrio_size > pf_ioctl_maxcount || 5131 WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_addr))) { 5132 error = EINVAL; 5133 break; 5134 } 5135 totlen = io->pfrio_size * sizeof(struct pfr_addr); 5136 pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr), 5137 M_TEMP, M_WAITOK); 5138 error = copyin(io->pfrio_buffer, pfras, totlen); 5139 if (error) { 5140 free(pfras, M_TEMP); 5141 break; 5142 } 5143 PF_RULES_WLOCK(); 5144 error = pfr_ina_define(&io->pfrio_table, pfras, 5145 io->pfrio_size, &io->pfrio_nadd, &io->pfrio_naddr, 5146 io->pfrio_ticket, io->pfrio_flags | PFR_FLAG_USERIOCTL); 5147 PF_RULES_WUNLOCK(); 5148 free(pfras, M_TEMP); 5149 break; 5150 } 5151 5152 case DIOCOSFPADD: { 5153 struct pf_osfp_ioctl *io = (struct pf_osfp_ioctl *)addr; 5154 PF_RULES_WLOCK(); 5155 error = pf_osfp_add(io); 5156 PF_RULES_WUNLOCK(); 5157 break; 5158 } 5159 5160 case DIOCOSFPGET: { 5161 struct pf_osfp_ioctl *io = (struct pf_osfp_ioctl *)addr; 5162 PF_RULES_RLOCK(); 5163 error = pf_osfp_get(io); 5164 PF_RULES_RUNLOCK(); 5165 break; 5166 } 5167 5168 case DIOCXBEGIN: { 5169 struct pfioc_trans *io = (struct pfioc_trans *)addr; 5170 struct pfioc_trans_e *ioes, *ioe; 5171 size_t totlen; 5172 int i; 5173 5174 if (io->esize != sizeof(*ioe)) { 5175 error = ENODEV; 5176 break; 5177 } 5178 if (io->size < 0 || 5179 io->size > pf_ioctl_maxcount || 5180 WOULD_OVERFLOW(io->size, sizeof(struct pfioc_trans_e))) { 5181 error = EINVAL; 5182 break; 5183 } 5184 totlen = sizeof(struct pfioc_trans_e) * io->size; 5185 ioes = mallocarray(io->size, sizeof(struct pfioc_trans_e), 5186 M_TEMP, M_WAITOK); 5187 error = copyin(io->array, ioes, totlen); 5188 if (error) { 5189 free(ioes, M_TEMP); 5190 break; 5191 } 5192 PF_RULES_WLOCK(); 5193 for (i = 0, ioe = ioes; i < io->size; i++, ioe++) { 5194 ioe->anchor[sizeof(ioe->anchor) - 1] = '\0'; 5195 switch (ioe->rs_num) { 5196 case PF_RULESET_ETH: 5197 if ((error = pf_begin_eth(&ioe->ticket, ioe->anchor))) { 5198 PF_RULES_WUNLOCK(); 5199 free(ioes, M_TEMP); 5200 goto fail; 5201 } 5202 break; 5203 #ifdef ALTQ 5204 case PF_RULESET_ALTQ: 5205 if (ioe->anchor[0]) { 5206 PF_RULES_WUNLOCK(); 5207 free(ioes, M_TEMP); 5208 error = EINVAL; 5209 goto fail; 5210 } 5211 if ((error = pf_begin_altq(&ioe->ticket))) { 5212 PF_RULES_WUNLOCK(); 5213 free(ioes, M_TEMP); 5214 goto fail; 5215 } 5216 break; 5217 #endif /* ALTQ */ 5218 case PF_RULESET_TABLE: 5219 { 5220 struct pfr_table table; 5221 5222 bzero(&table, sizeof(table)); 5223 strlcpy(table.pfrt_anchor, ioe->anchor, 5224 sizeof(table.pfrt_anchor)); 5225 if ((error = pfr_ina_begin(&table, 5226 &ioe->ticket, NULL, 0))) { 5227 PF_RULES_WUNLOCK(); 5228 free(ioes, M_TEMP); 5229 goto fail; 5230 } 5231 break; 5232 } 5233 default: 5234 if ((error = pf_begin_rules(&ioe->ticket, 5235 ioe->rs_num, ioe->anchor))) { 5236 PF_RULES_WUNLOCK(); 5237 free(ioes, M_TEMP); 5238 goto fail; 5239 } 5240 break; 5241 } 5242 } 5243 PF_RULES_WUNLOCK(); 5244 error = copyout(ioes, io->array, totlen); 5245 free(ioes, M_TEMP); 5246 break; 5247 } 5248 5249 case DIOCXROLLBACK: { 5250 struct pfioc_trans *io = (struct pfioc_trans *)addr; 5251 struct pfioc_trans_e *ioe, *ioes; 5252 size_t totlen; 5253 int i; 5254 5255 if (io->esize != sizeof(*ioe)) { 5256 error = ENODEV; 5257 break; 5258 } 5259 if (io->size < 0 || 5260 io->size > pf_ioctl_maxcount || 5261 WOULD_OVERFLOW(io->size, sizeof(struct pfioc_trans_e))) { 5262 error = EINVAL; 5263 break; 5264 } 5265 totlen = sizeof(struct pfioc_trans_e) * io->size; 5266 ioes = mallocarray(io->size, sizeof(struct pfioc_trans_e), 5267 M_TEMP, M_WAITOK); 5268 error = copyin(io->array, ioes, totlen); 5269 if (error) { 5270 free(ioes, M_TEMP); 5271 break; 5272 } 5273 PF_RULES_WLOCK(); 5274 for (i = 0, ioe = ioes; i < io->size; i++, ioe++) { 5275 ioe->anchor[sizeof(ioe->anchor) - 1] = '\0'; 5276 switch (ioe->rs_num) { 5277 case PF_RULESET_ETH: 5278 if ((error = pf_rollback_eth(ioe->ticket, 5279 ioe->anchor))) { 5280 PF_RULES_WUNLOCK(); 5281 free(ioes, M_TEMP); 5282 goto fail; /* really bad */ 5283 } 5284 break; 5285 #ifdef ALTQ 5286 case PF_RULESET_ALTQ: 5287 if (ioe->anchor[0]) { 5288 PF_RULES_WUNLOCK(); 5289 free(ioes, M_TEMP); 5290 error = EINVAL; 5291 goto fail; 5292 } 5293 if ((error = pf_rollback_altq(ioe->ticket))) { 5294 PF_RULES_WUNLOCK(); 5295 free(ioes, M_TEMP); 5296 goto fail; /* really bad */ 5297 } 5298 break; 5299 #endif /* ALTQ */ 5300 case PF_RULESET_TABLE: 5301 { 5302 struct pfr_table table; 5303 5304 bzero(&table, sizeof(table)); 5305 strlcpy(table.pfrt_anchor, ioe->anchor, 5306 sizeof(table.pfrt_anchor)); 5307 if ((error = pfr_ina_rollback(&table, 5308 ioe->ticket, NULL, 0))) { 5309 PF_RULES_WUNLOCK(); 5310 free(ioes, M_TEMP); 5311 goto fail; /* really bad */ 5312 } 5313 break; 5314 } 5315 default: 5316 if ((error = pf_rollback_rules(ioe->ticket, 5317 ioe->rs_num, ioe->anchor))) { 5318 PF_RULES_WUNLOCK(); 5319 free(ioes, M_TEMP); 5320 goto fail; /* really bad */ 5321 } 5322 break; 5323 } 5324 } 5325 PF_RULES_WUNLOCK(); 5326 free(ioes, M_TEMP); 5327 break; 5328 } 5329 5330 case DIOCXCOMMIT: { 5331 struct pfioc_trans *io = (struct pfioc_trans *)addr; 5332 struct pfioc_trans_e *ioe, *ioes; 5333 struct pf_kruleset *rs; 5334 struct pf_keth_ruleset *ers; 5335 size_t totlen; 5336 int i; 5337 5338 if (io->esize != sizeof(*ioe)) { 5339 error = ENODEV; 5340 break; 5341 } 5342 5343 if (io->size < 0 || 5344 io->size > pf_ioctl_maxcount || 5345 WOULD_OVERFLOW(io->size, sizeof(struct pfioc_trans_e))) { 5346 error = EINVAL; 5347 break; 5348 } 5349 5350 totlen = sizeof(struct pfioc_trans_e) * io->size; 5351 ioes = mallocarray(io->size, sizeof(struct pfioc_trans_e), 5352 M_TEMP, M_WAITOK); 5353 error = copyin(io->array, ioes, totlen); 5354 if (error) { 5355 free(ioes, M_TEMP); 5356 break; 5357 } 5358 PF_RULES_WLOCK(); 5359 /* First makes sure everything will succeed. */ 5360 for (i = 0, ioe = ioes; i < io->size; i++, ioe++) { 5361 ioe->anchor[sizeof(ioe->anchor) - 1] = 0; 5362 switch (ioe->rs_num) { 5363 case PF_RULESET_ETH: 5364 ers = pf_find_keth_ruleset(ioe->anchor); 5365 if (ers == NULL || ioe->ticket == 0 || 5366 ioe->ticket != ers->inactive.ticket) { 5367 PF_RULES_WUNLOCK(); 5368 free(ioes, M_TEMP); 5369 error = EINVAL; 5370 goto fail; 5371 } 5372 break; 5373 #ifdef ALTQ 5374 case PF_RULESET_ALTQ: 5375 if (ioe->anchor[0]) { 5376 PF_RULES_WUNLOCK(); 5377 free(ioes, M_TEMP); 5378 error = EINVAL; 5379 goto fail; 5380 } 5381 if (!V_altqs_inactive_open || ioe->ticket != 5382 V_ticket_altqs_inactive) { 5383 PF_RULES_WUNLOCK(); 5384 free(ioes, M_TEMP); 5385 error = EBUSY; 5386 goto fail; 5387 } 5388 break; 5389 #endif /* ALTQ */ 5390 case PF_RULESET_TABLE: 5391 rs = pf_find_kruleset(ioe->anchor); 5392 if (rs == NULL || !rs->topen || ioe->ticket != 5393 rs->tticket) { 5394 PF_RULES_WUNLOCK(); 5395 free(ioes, M_TEMP); 5396 error = EBUSY; 5397 goto fail; 5398 } 5399 break; 5400 default: 5401 if (ioe->rs_num < 0 || ioe->rs_num >= 5402 PF_RULESET_MAX) { 5403 PF_RULES_WUNLOCK(); 5404 free(ioes, M_TEMP); 5405 error = EINVAL; 5406 goto fail; 5407 } 5408 rs = pf_find_kruleset(ioe->anchor); 5409 if (rs == NULL || 5410 !rs->rules[ioe->rs_num].inactive.open || 5411 rs->rules[ioe->rs_num].inactive.ticket != 5412 ioe->ticket) { 5413 PF_RULES_WUNLOCK(); 5414 free(ioes, M_TEMP); 5415 error = EBUSY; 5416 goto fail; 5417 } 5418 break; 5419 } 5420 } 5421 /* Now do the commit - no errors should happen here. */ 5422 for (i = 0, ioe = ioes; i < io->size; i++, ioe++) { 5423 switch (ioe->rs_num) { 5424 case PF_RULESET_ETH: 5425 if ((error = pf_commit_eth(ioe->ticket, ioe->anchor))) { 5426 PF_RULES_WUNLOCK(); 5427 free(ioes, M_TEMP); 5428 goto fail; /* really bad */ 5429 } 5430 break; 5431 #ifdef ALTQ 5432 case PF_RULESET_ALTQ: 5433 if ((error = pf_commit_altq(ioe->ticket))) { 5434 PF_RULES_WUNLOCK(); 5435 free(ioes, M_TEMP); 5436 goto fail; /* really bad */ 5437 } 5438 break; 5439 #endif /* ALTQ */ 5440 case PF_RULESET_TABLE: 5441 { 5442 struct pfr_table table; 5443 5444 bzero(&table, sizeof(table)); 5445 (void)strlcpy(table.pfrt_anchor, ioe->anchor, 5446 sizeof(table.pfrt_anchor)); 5447 if ((error = pfr_ina_commit(&table, 5448 ioe->ticket, NULL, NULL, 0))) { 5449 PF_RULES_WUNLOCK(); 5450 free(ioes, M_TEMP); 5451 goto fail; /* really bad */ 5452 } 5453 break; 5454 } 5455 default: 5456 if ((error = pf_commit_rules(ioe->ticket, 5457 ioe->rs_num, ioe->anchor))) { 5458 PF_RULES_WUNLOCK(); 5459 free(ioes, M_TEMP); 5460 goto fail; /* really bad */ 5461 } 5462 break; 5463 } 5464 } 5465 PF_RULES_WUNLOCK(); 5466 5467 /* Only hook into EtherNet taffic if we've got rules for it. */ 5468 if (! TAILQ_EMPTY(V_pf_keth->active.rules)) 5469 hook_pf_eth(); 5470 else 5471 dehook_pf_eth(); 5472 5473 free(ioes, M_TEMP); 5474 break; 5475 } 5476 5477 case DIOCGETSRCNODES: { 5478 struct pfioc_src_nodes *psn = (struct pfioc_src_nodes *)addr; 5479 struct pf_srchash *sh; 5480 struct pf_ksrc_node *n; 5481 struct pf_src_node *p, *pstore; 5482 uint32_t i, nr = 0; 5483 5484 for (i = 0, sh = V_pf_srchash; i <= V_pf_srchashmask; 5485 i++, sh++) { 5486 PF_HASHROW_LOCK(sh); 5487 LIST_FOREACH(n, &sh->nodes, entry) 5488 nr++; 5489 PF_HASHROW_UNLOCK(sh); 5490 } 5491 5492 psn->psn_len = min(psn->psn_len, 5493 sizeof(struct pf_src_node) * nr); 5494 5495 if (psn->psn_len == 0) { 5496 psn->psn_len = sizeof(struct pf_src_node) * nr; 5497 break; 5498 } 5499 5500 nr = 0; 5501 5502 p = pstore = malloc(psn->psn_len, M_TEMP, M_WAITOK | M_ZERO); 5503 for (i = 0, sh = V_pf_srchash; i <= V_pf_srchashmask; 5504 i++, sh++) { 5505 PF_HASHROW_LOCK(sh); 5506 LIST_FOREACH(n, &sh->nodes, entry) { 5507 5508 if ((nr + 1) * sizeof(*p) > (unsigned)psn->psn_len) 5509 break; 5510 5511 pf_src_node_copy(n, p); 5512 5513 p++; 5514 nr++; 5515 } 5516 PF_HASHROW_UNLOCK(sh); 5517 } 5518 error = copyout(pstore, psn->psn_src_nodes, 5519 sizeof(struct pf_src_node) * nr); 5520 if (error) { 5521 free(pstore, M_TEMP); 5522 break; 5523 } 5524 psn->psn_len = sizeof(struct pf_src_node) * nr; 5525 free(pstore, M_TEMP); 5526 break; 5527 } 5528 5529 case DIOCCLRSRCNODES: { 5530 pf_kill_srcnodes(NULL); 5531 break; 5532 } 5533 5534 case DIOCKILLSRCNODES: 5535 pf_kill_srcnodes((struct pfioc_src_node_kill *)addr); 5536 break; 5537 5538 #ifdef COMPAT_FREEBSD13 5539 case DIOCKEEPCOUNTERS_FREEBSD13: 5540 #endif 5541 case DIOCKEEPCOUNTERS: 5542 error = pf_keepcounters((struct pfioc_nv *)addr); 5543 break; 5544 5545 case DIOCGETSYNCOOKIES: 5546 error = pf_get_syncookies((struct pfioc_nv *)addr); 5547 break; 5548 5549 case DIOCSETSYNCOOKIES: 5550 error = pf_set_syncookies((struct pfioc_nv *)addr); 5551 break; 5552 5553 case DIOCSETHOSTID: { 5554 u_int32_t *hostid = (u_int32_t *)addr; 5555 5556 PF_RULES_WLOCK(); 5557 if (*hostid == 0) 5558 V_pf_status.hostid = arc4random(); 5559 else 5560 V_pf_status.hostid = *hostid; 5561 PF_RULES_WUNLOCK(); 5562 break; 5563 } 5564 5565 case DIOCOSFPFLUSH: 5566 PF_RULES_WLOCK(); 5567 pf_osfp_flush(); 5568 PF_RULES_WUNLOCK(); 5569 break; 5570 5571 case DIOCIGETIFACES: { 5572 struct pfioc_iface *io = (struct pfioc_iface *)addr; 5573 struct pfi_kif *ifstore; 5574 size_t bufsiz; 5575 5576 if (io->pfiio_esize != sizeof(struct pfi_kif)) { 5577 error = ENODEV; 5578 break; 5579 } 5580 5581 if (io->pfiio_size < 0 || 5582 io->pfiio_size > pf_ioctl_maxcount || 5583 WOULD_OVERFLOW(io->pfiio_size, sizeof(struct pfi_kif))) { 5584 error = EINVAL; 5585 break; 5586 } 5587 5588 io->pfiio_name[sizeof(io->pfiio_name) - 1] = '\0'; 5589 5590 bufsiz = io->pfiio_size * sizeof(struct pfi_kif); 5591 ifstore = mallocarray(io->pfiio_size, sizeof(struct pfi_kif), 5592 M_TEMP, M_WAITOK | M_ZERO); 5593 5594 PF_RULES_RLOCK(); 5595 pfi_get_ifaces(io->pfiio_name, ifstore, &io->pfiio_size); 5596 PF_RULES_RUNLOCK(); 5597 error = copyout(ifstore, io->pfiio_buffer, bufsiz); 5598 free(ifstore, M_TEMP); 5599 break; 5600 } 5601 5602 case DIOCSETIFFLAG: { 5603 struct pfioc_iface *io = (struct pfioc_iface *)addr; 5604 5605 io->pfiio_name[sizeof(io->pfiio_name) - 1] = '\0'; 5606 5607 PF_RULES_WLOCK(); 5608 error = pfi_set_flags(io->pfiio_name, io->pfiio_flags); 5609 PF_RULES_WUNLOCK(); 5610 break; 5611 } 5612 5613 case DIOCCLRIFFLAG: { 5614 struct pfioc_iface *io = (struct pfioc_iface *)addr; 5615 5616 io->pfiio_name[sizeof(io->pfiio_name) - 1] = '\0'; 5617 5618 PF_RULES_WLOCK(); 5619 error = pfi_clear_flags(io->pfiio_name, io->pfiio_flags); 5620 PF_RULES_WUNLOCK(); 5621 break; 5622 } 5623 5624 case DIOCSETREASS: { 5625 u_int32_t *reass = (u_int32_t *)addr; 5626 5627 V_pf_status.reass = *reass & (PF_REASS_ENABLED|PF_REASS_NODF); 5628 /* Removal of DF flag without reassembly enabled is not a 5629 * valid combination. Disable reassembly in such case. */ 5630 if (!(V_pf_status.reass & PF_REASS_ENABLED)) 5631 V_pf_status.reass = 0; 5632 break; 5633 } 5634 5635 default: 5636 error = ENODEV; 5637 break; 5638 } 5639 fail: 5640 CURVNET_RESTORE(); 5641 5642 #undef ERROUT_IOCTL 5643 5644 return (error); 5645 } 5646 5647 void 5648 pfsync_state_export(union pfsync_state_union *sp, struct pf_kstate *st, int msg_version) 5649 { 5650 bzero(sp, sizeof(union pfsync_state_union)); 5651 5652 /* copy from state key */ 5653 sp->pfs_1301.key[PF_SK_WIRE].addr[0] = st->key[PF_SK_WIRE]->addr[0]; 5654 sp->pfs_1301.key[PF_SK_WIRE].addr[1] = st->key[PF_SK_WIRE]->addr[1]; 5655 sp->pfs_1301.key[PF_SK_WIRE].port[0] = st->key[PF_SK_WIRE]->port[0]; 5656 sp->pfs_1301.key[PF_SK_WIRE].port[1] = st->key[PF_SK_WIRE]->port[1]; 5657 sp->pfs_1301.key[PF_SK_STACK].addr[0] = st->key[PF_SK_STACK]->addr[0]; 5658 sp->pfs_1301.key[PF_SK_STACK].addr[1] = st->key[PF_SK_STACK]->addr[1]; 5659 sp->pfs_1301.key[PF_SK_STACK].port[0] = st->key[PF_SK_STACK]->port[0]; 5660 sp->pfs_1301.key[PF_SK_STACK].port[1] = st->key[PF_SK_STACK]->port[1]; 5661 sp->pfs_1301.proto = st->key[PF_SK_WIRE]->proto; 5662 sp->pfs_1301.af = st->key[PF_SK_WIRE]->af; 5663 5664 /* copy from state */ 5665 strlcpy(sp->pfs_1301.ifname, st->kif->pfik_name, sizeof(sp->pfs_1301.ifname)); 5666 bcopy(&st->act.rt_addr, &sp->pfs_1301.rt_addr, sizeof(sp->pfs_1301.rt_addr)); 5667 sp->pfs_1301.creation = htonl(time_uptime - (st->creation / 1000)); 5668 sp->pfs_1301.expire = pf_state_expires(st); 5669 if (sp->pfs_1301.expire <= time_uptime) 5670 sp->pfs_1301.expire = htonl(0); 5671 else 5672 sp->pfs_1301.expire = htonl(sp->pfs_1301.expire - time_uptime); 5673 5674 sp->pfs_1301.direction = st->direction; 5675 sp->pfs_1301.log = st->act.log; 5676 sp->pfs_1301.timeout = st->timeout; 5677 5678 switch (msg_version) { 5679 case PFSYNC_MSG_VERSION_1301: 5680 sp->pfs_1301.state_flags = st->state_flags; 5681 break; 5682 case PFSYNC_MSG_VERSION_1400: 5683 sp->pfs_1400.state_flags = htons(st->state_flags); 5684 sp->pfs_1400.qid = htons(st->act.qid); 5685 sp->pfs_1400.pqid = htons(st->act.pqid); 5686 sp->pfs_1400.dnpipe = htons(st->act.dnpipe); 5687 sp->pfs_1400.dnrpipe = htons(st->act.dnrpipe); 5688 sp->pfs_1400.rtableid = htonl(st->act.rtableid); 5689 sp->pfs_1400.min_ttl = st->act.min_ttl; 5690 sp->pfs_1400.set_tos = st->act.set_tos; 5691 sp->pfs_1400.max_mss = htons(st->act.max_mss); 5692 sp->pfs_1400.set_prio[0] = st->act.set_prio[0]; 5693 sp->pfs_1400.set_prio[1] = st->act.set_prio[1]; 5694 sp->pfs_1400.rt = st->act.rt; 5695 if (st->act.rt_kif) 5696 strlcpy(sp->pfs_1400.rt_ifname, 5697 st->act.rt_kif->pfik_name, 5698 sizeof(sp->pfs_1400.rt_ifname)); 5699 break; 5700 default: 5701 panic("%s: Unsupported pfsync_msg_version %d", 5702 __func__, msg_version); 5703 } 5704 5705 /* 5706 * XXX Why do we bother pfsyncing source node information if source 5707 * nodes are not synced? Showing users that there is source tracking 5708 * when there is none seems useless. 5709 */ 5710 if (st->sns[PF_SN_LIMIT] != NULL) 5711 sp->pfs_1301.sync_flags |= PFSYNC_FLAG_SRCNODE; 5712 if (st->sns[PF_SN_NAT] != NULL || st->sns[PF_SN_ROUTE]) 5713 sp->pfs_1301.sync_flags |= PFSYNC_FLAG_NATSRCNODE; 5714 5715 sp->pfs_1301.id = st->id; 5716 sp->pfs_1301.creatorid = st->creatorid; 5717 pf_state_peer_hton(&st->src, &sp->pfs_1301.src); 5718 pf_state_peer_hton(&st->dst, &sp->pfs_1301.dst); 5719 5720 if (st->rule == NULL) 5721 sp->pfs_1301.rule = htonl(-1); 5722 else 5723 sp->pfs_1301.rule = htonl(st->rule->nr); 5724 if (st->anchor == NULL) 5725 sp->pfs_1301.anchor = htonl(-1); 5726 else 5727 sp->pfs_1301.anchor = htonl(st->anchor->nr); 5728 if (st->nat_rule == NULL) 5729 sp->pfs_1301.nat_rule = htonl(-1); 5730 else 5731 sp->pfs_1301.nat_rule = htonl(st->nat_rule->nr); 5732 5733 pf_state_counter_hton(st->packets[0], sp->pfs_1301.packets[0]); 5734 pf_state_counter_hton(st->packets[1], sp->pfs_1301.packets[1]); 5735 pf_state_counter_hton(st->bytes[0], sp->pfs_1301.bytes[0]); 5736 pf_state_counter_hton(st->bytes[1], sp->pfs_1301.bytes[1]); 5737 } 5738 5739 void 5740 pf_state_export(struct pf_state_export *sp, struct pf_kstate *st) 5741 { 5742 bzero(sp, sizeof(*sp)); 5743 5744 sp->version = PF_STATE_VERSION; 5745 5746 /* copy from state key */ 5747 sp->key[PF_SK_WIRE].addr[0] = st->key[PF_SK_WIRE]->addr[0]; 5748 sp->key[PF_SK_WIRE].addr[1] = st->key[PF_SK_WIRE]->addr[1]; 5749 sp->key[PF_SK_WIRE].port[0] = st->key[PF_SK_WIRE]->port[0]; 5750 sp->key[PF_SK_WIRE].port[1] = st->key[PF_SK_WIRE]->port[1]; 5751 sp->key[PF_SK_STACK].addr[0] = st->key[PF_SK_STACK]->addr[0]; 5752 sp->key[PF_SK_STACK].addr[1] = st->key[PF_SK_STACK]->addr[1]; 5753 sp->key[PF_SK_STACK].port[0] = st->key[PF_SK_STACK]->port[0]; 5754 sp->key[PF_SK_STACK].port[1] = st->key[PF_SK_STACK]->port[1]; 5755 sp->proto = st->key[PF_SK_WIRE]->proto; 5756 sp->af = st->key[PF_SK_WIRE]->af; 5757 5758 /* copy from state */ 5759 strlcpy(sp->ifname, st->kif->pfik_name, sizeof(sp->ifname)); 5760 strlcpy(sp->orig_ifname, st->orig_kif->pfik_name, 5761 sizeof(sp->orig_ifname)); 5762 memcpy(&sp->rt_addr, &st->act.rt_addr, sizeof(sp->rt_addr)); 5763 sp->creation = htonl(time_uptime - (st->creation / 1000)); 5764 sp->expire = pf_state_expires(st); 5765 if (sp->expire <= time_uptime) 5766 sp->expire = htonl(0); 5767 else 5768 sp->expire = htonl(sp->expire - time_uptime); 5769 5770 sp->direction = st->direction; 5771 sp->log = st->act.log; 5772 sp->timeout = st->timeout; 5773 /* 8 bits for the old libpfctl, 16 bits for the new libpfctl */ 5774 sp->state_flags_compat = st->state_flags; 5775 sp->state_flags = htons(st->state_flags); 5776 if (st->sns[PF_SN_LIMIT] != NULL) 5777 sp->sync_flags |= PFSYNC_FLAG_SRCNODE; 5778 if (st->sns[PF_SN_NAT] != NULL || st->sns[PF_SN_ROUTE] != NULL) 5779 sp->sync_flags |= PFSYNC_FLAG_NATSRCNODE; 5780 sp->id = st->id; 5781 sp->creatorid = st->creatorid; 5782 pf_state_peer_hton(&st->src, &sp->src); 5783 pf_state_peer_hton(&st->dst, &sp->dst); 5784 5785 if (st->rule == NULL) 5786 sp->rule = htonl(-1); 5787 else 5788 sp->rule = htonl(st->rule->nr); 5789 if (st->anchor == NULL) 5790 sp->anchor = htonl(-1); 5791 else 5792 sp->anchor = htonl(st->anchor->nr); 5793 if (st->nat_rule == NULL) 5794 sp->nat_rule = htonl(-1); 5795 else 5796 sp->nat_rule = htonl(st->nat_rule->nr); 5797 5798 sp->packets[0] = st->packets[0]; 5799 sp->packets[1] = st->packets[1]; 5800 sp->bytes[0] = st->bytes[0]; 5801 sp->bytes[1] = st->bytes[1]; 5802 5803 sp->qid = htons(st->act.qid); 5804 sp->pqid = htons(st->act.pqid); 5805 sp->dnpipe = htons(st->act.dnpipe); 5806 sp->dnrpipe = htons(st->act.dnrpipe); 5807 sp->rtableid = htonl(st->act.rtableid); 5808 sp->min_ttl = st->act.min_ttl; 5809 sp->set_tos = st->act.set_tos; 5810 sp->max_mss = htons(st->act.max_mss); 5811 sp->rt = st->act.rt; 5812 if (st->act.rt_kif) 5813 strlcpy(sp->rt_ifname, st->act.rt_kif->pfik_name, 5814 sizeof(sp->rt_ifname)); 5815 sp->set_prio[0] = st->act.set_prio[0]; 5816 sp->set_prio[1] = st->act.set_prio[1]; 5817 5818 } 5819 5820 static void 5821 pf_tbladdr_copyout(struct pf_addr_wrap *aw) 5822 { 5823 struct pfr_ktable *kt; 5824 5825 KASSERT(aw->type == PF_ADDR_TABLE, ("%s: type %u", __func__, aw->type)); 5826 5827 kt = aw->p.tbl; 5828 if (!(kt->pfrkt_flags & PFR_TFLAG_ACTIVE) && kt->pfrkt_root != NULL) 5829 kt = kt->pfrkt_root; 5830 aw->p.tbl = NULL; 5831 aw->p.tblcnt = (kt->pfrkt_flags & PFR_TFLAG_ACTIVE) ? 5832 kt->pfrkt_cnt : -1; 5833 } 5834 5835 static int 5836 pf_add_status_counters(nvlist_t *nvl, const char *name, counter_u64_t *counters, 5837 size_t number, char **names) 5838 { 5839 nvlist_t *nvc; 5840 5841 nvc = nvlist_create(0); 5842 if (nvc == NULL) 5843 return (ENOMEM); 5844 5845 for (int i = 0; i < number; i++) { 5846 nvlist_append_number_array(nvc, "counters", 5847 counter_u64_fetch(counters[i])); 5848 nvlist_append_string_array(nvc, "names", 5849 names[i]); 5850 nvlist_append_number_array(nvc, "ids", 5851 i); 5852 } 5853 nvlist_add_nvlist(nvl, name, nvc); 5854 nvlist_destroy(nvc); 5855 5856 return (0); 5857 } 5858 5859 static int 5860 pf_getstatus(struct pfioc_nv *nv) 5861 { 5862 nvlist_t *nvl = NULL, *nvc = NULL; 5863 void *nvlpacked = NULL; 5864 int error; 5865 struct pf_status s; 5866 char *pf_reasons[PFRES_MAX+1] = PFRES_NAMES; 5867 char *pf_lcounter[KLCNT_MAX+1] = KLCNT_NAMES; 5868 char *pf_fcounter[FCNT_MAX+1] = FCNT_NAMES; 5869 time_t since; 5870 5871 PF_RULES_RLOCK_TRACKER; 5872 5873 #define ERROUT(x) ERROUT_FUNCTION(errout, x) 5874 5875 PF_RULES_RLOCK(); 5876 5877 nvl = nvlist_create(0); 5878 if (nvl == NULL) 5879 ERROUT(ENOMEM); 5880 5881 since = time_second - (time_uptime - V_pf_status.since); 5882 5883 nvlist_add_bool(nvl, "running", V_pf_status.running); 5884 nvlist_add_number(nvl, "since", since); 5885 nvlist_add_number(nvl, "debug", V_pf_status.debug); 5886 nvlist_add_number(nvl, "hostid", V_pf_status.hostid); 5887 nvlist_add_number(nvl, "states", V_pf_status.states); 5888 nvlist_add_number(nvl, "src_nodes", V_pf_status.src_nodes); 5889 nvlist_add_number(nvl, "reass", V_pf_status.reass); 5890 nvlist_add_bool(nvl, "syncookies_active", 5891 V_pf_status.syncookies_active); 5892 nvlist_add_number(nvl, "halfopen_states", V_pf_status.states_halfopen); 5893 5894 /* counters */ 5895 error = pf_add_status_counters(nvl, "counters", V_pf_status.counters, 5896 PFRES_MAX, pf_reasons); 5897 if (error != 0) 5898 ERROUT(error); 5899 5900 /* lcounters */ 5901 error = pf_add_status_counters(nvl, "lcounters", V_pf_status.lcounters, 5902 KLCNT_MAX, pf_lcounter); 5903 if (error != 0) 5904 ERROUT(error); 5905 5906 /* fcounters */ 5907 nvc = nvlist_create(0); 5908 if (nvc == NULL) 5909 ERROUT(ENOMEM); 5910 5911 for (int i = 0; i < FCNT_MAX; i++) { 5912 nvlist_append_number_array(nvc, "counters", 5913 pf_counter_u64_fetch(&V_pf_status.fcounters[i])); 5914 nvlist_append_string_array(nvc, "names", 5915 pf_fcounter[i]); 5916 nvlist_append_number_array(nvc, "ids", 5917 i); 5918 } 5919 nvlist_add_nvlist(nvl, "fcounters", nvc); 5920 nvlist_destroy(nvc); 5921 nvc = NULL; 5922 5923 /* scounters */ 5924 error = pf_add_status_counters(nvl, "scounters", V_pf_status.scounters, 5925 SCNT_MAX, pf_fcounter); 5926 if (error != 0) 5927 ERROUT(error); 5928 5929 nvlist_add_string(nvl, "ifname", V_pf_status.ifname); 5930 nvlist_add_binary(nvl, "chksum", V_pf_status.pf_chksum, 5931 PF_MD5_DIGEST_LENGTH); 5932 5933 pfi_update_status(V_pf_status.ifname, &s); 5934 5935 /* pcounters / bcounters */ 5936 for (int i = 0; i < 2; i++) { 5937 for (int j = 0; j < 2; j++) { 5938 for (int k = 0; k < 2; k++) { 5939 nvlist_append_number_array(nvl, "pcounters", 5940 s.pcounters[i][j][k]); 5941 } 5942 nvlist_append_number_array(nvl, "bcounters", 5943 s.bcounters[i][j]); 5944 } 5945 } 5946 5947 nvlpacked = nvlist_pack(nvl, &nv->len); 5948 if (nvlpacked == NULL) 5949 ERROUT(ENOMEM); 5950 5951 if (nv->size == 0) 5952 ERROUT(0); 5953 else if (nv->size < nv->len) 5954 ERROUT(ENOSPC); 5955 5956 PF_RULES_RUNLOCK(); 5957 error = copyout(nvlpacked, nv->data, nv->len); 5958 goto done; 5959 5960 #undef ERROUT 5961 errout: 5962 PF_RULES_RUNLOCK(); 5963 done: 5964 free(nvlpacked, M_NVLIST); 5965 nvlist_destroy(nvc); 5966 nvlist_destroy(nvl); 5967 5968 return (error); 5969 } 5970 5971 /* 5972 * XXX - Check for version mismatch!!! 5973 */ 5974 static void 5975 pf_clear_all_states(void) 5976 { 5977 struct epoch_tracker et; 5978 struct pf_kstate *s; 5979 u_int i; 5980 5981 NET_EPOCH_ENTER(et); 5982 for (i = 0; i <= V_pf_hashmask; i++) { 5983 struct pf_idhash *ih = &V_pf_idhash[i]; 5984 relock: 5985 PF_HASHROW_LOCK(ih); 5986 LIST_FOREACH(s, &ih->states, entry) { 5987 s->timeout = PFTM_PURGE; 5988 /* Don't send out individual delete messages. */ 5989 s->state_flags |= PFSTATE_NOSYNC; 5990 pf_remove_state(s); 5991 goto relock; 5992 } 5993 PF_HASHROW_UNLOCK(ih); 5994 } 5995 NET_EPOCH_EXIT(et); 5996 } 5997 5998 static int 5999 pf_clear_tables(void) 6000 { 6001 struct pfioc_table io; 6002 int error; 6003 6004 bzero(&io, sizeof(io)); 6005 io.pfrio_flags |= PFR_FLAG_ALLRSETS; 6006 6007 error = pfr_clr_tables(&io.pfrio_table, &io.pfrio_ndel, 6008 io.pfrio_flags); 6009 6010 return (error); 6011 } 6012 6013 static void 6014 pf_kill_srcnodes(struct pfioc_src_node_kill *psnk) 6015 { 6016 struct pf_ksrc_node_list kill; 6017 u_int killed; 6018 6019 LIST_INIT(&kill); 6020 for (int i = 0; i <= V_pf_srchashmask; i++) { 6021 struct pf_srchash *sh = &V_pf_srchash[i]; 6022 struct pf_ksrc_node *sn, *tmp; 6023 6024 PF_HASHROW_LOCK(sh); 6025 LIST_FOREACH_SAFE(sn, &sh->nodes, entry, tmp) 6026 if (psnk == NULL || 6027 (PF_MATCHA(psnk->psnk_src.neg, 6028 &psnk->psnk_src.addr.v.a.addr, 6029 &psnk->psnk_src.addr.v.a.mask, 6030 &sn->addr, sn->af) && 6031 PF_MATCHA(psnk->psnk_dst.neg, 6032 &psnk->psnk_dst.addr.v.a.addr, 6033 &psnk->psnk_dst.addr.v.a.mask, 6034 &sn->raddr, sn->af))) { 6035 pf_unlink_src_node(sn); 6036 LIST_INSERT_HEAD(&kill, sn, entry); 6037 sn->expire = 1; 6038 } 6039 PF_HASHROW_UNLOCK(sh); 6040 } 6041 6042 for (int i = 0; i <= V_pf_hashmask; i++) { 6043 struct pf_idhash *ih = &V_pf_idhash[i]; 6044 struct pf_kstate *s; 6045 6046 PF_HASHROW_LOCK(ih); 6047 LIST_FOREACH(s, &ih->states, entry) { 6048 for(pf_sn_types_t sn_type=0; sn_type<PF_SN_MAX; 6049 sn_type++) { 6050 if (s->sns[sn_type] && 6051 s->sns[sn_type]->expire == 1) { 6052 s->sns[sn_type] = NULL; 6053 } 6054 } 6055 } 6056 PF_HASHROW_UNLOCK(ih); 6057 } 6058 6059 killed = pf_free_src_nodes(&kill); 6060 6061 if (psnk != NULL) 6062 psnk->psnk_killed = killed; 6063 } 6064 6065 static int 6066 pf_keepcounters(struct pfioc_nv *nv) 6067 { 6068 nvlist_t *nvl = NULL; 6069 void *nvlpacked = NULL; 6070 int error = 0; 6071 6072 #define ERROUT(x) ERROUT_FUNCTION(on_error, x) 6073 6074 if (nv->len > pf_ioctl_maxcount) 6075 ERROUT(ENOMEM); 6076 6077 nvlpacked = malloc(nv->len, M_NVLIST, M_WAITOK); 6078 error = copyin(nv->data, nvlpacked, nv->len); 6079 if (error) 6080 ERROUT(error); 6081 6082 nvl = nvlist_unpack(nvlpacked, nv->len, 0); 6083 if (nvl == NULL) 6084 ERROUT(EBADMSG); 6085 6086 if (! nvlist_exists_bool(nvl, "keep_counters")) 6087 ERROUT(EBADMSG); 6088 6089 V_pf_status.keep_counters = nvlist_get_bool(nvl, "keep_counters"); 6090 6091 on_error: 6092 nvlist_destroy(nvl); 6093 free(nvlpacked, M_NVLIST); 6094 return (error); 6095 } 6096 6097 unsigned int 6098 pf_clear_states(const struct pf_kstate_kill *kill) 6099 { 6100 struct pf_state_key_cmp match_key; 6101 struct pf_kstate *s; 6102 struct pfi_kkif *kif; 6103 int idx; 6104 unsigned int killed = 0, dir; 6105 6106 NET_EPOCH_ASSERT(); 6107 6108 for (unsigned int i = 0; i <= V_pf_hashmask; i++) { 6109 struct pf_idhash *ih = &V_pf_idhash[i]; 6110 6111 relock_DIOCCLRSTATES: 6112 PF_HASHROW_LOCK(ih); 6113 LIST_FOREACH(s, &ih->states, entry) { 6114 /* For floating states look at the original kif. */ 6115 kif = s->kif == V_pfi_all ? s->orig_kif : s->kif; 6116 6117 if (kill->psk_ifname[0] && 6118 strcmp(kill->psk_ifname, 6119 kif->pfik_name)) 6120 continue; 6121 6122 if (kill->psk_kill_match) { 6123 bzero(&match_key, sizeof(match_key)); 6124 6125 if (s->direction == PF_OUT) { 6126 dir = PF_IN; 6127 idx = PF_SK_STACK; 6128 } else { 6129 dir = PF_OUT; 6130 idx = PF_SK_WIRE; 6131 } 6132 6133 match_key.af = s->key[idx]->af; 6134 match_key.proto = s->key[idx]->proto; 6135 PF_ACPY(&match_key.addr[0], 6136 &s->key[idx]->addr[1], match_key.af); 6137 match_key.port[0] = s->key[idx]->port[1]; 6138 PF_ACPY(&match_key.addr[1], 6139 &s->key[idx]->addr[0], match_key.af); 6140 match_key.port[1] = s->key[idx]->port[0]; 6141 } 6142 6143 /* 6144 * Don't send out individual 6145 * delete messages. 6146 */ 6147 s->state_flags |= PFSTATE_NOSYNC; 6148 pf_remove_state(s); 6149 killed++; 6150 6151 if (kill->psk_kill_match) 6152 killed += pf_kill_matching_state(&match_key, 6153 dir); 6154 6155 goto relock_DIOCCLRSTATES; 6156 } 6157 PF_HASHROW_UNLOCK(ih); 6158 } 6159 6160 if (V_pfsync_clear_states_ptr != NULL) 6161 V_pfsync_clear_states_ptr(V_pf_status.hostid, kill->psk_ifname); 6162 6163 return (killed); 6164 } 6165 6166 void 6167 pf_killstates(struct pf_kstate_kill *kill, unsigned int *killed) 6168 { 6169 struct pf_kstate *s; 6170 6171 NET_EPOCH_ASSERT(); 6172 if (kill->psk_pfcmp.id) { 6173 if (kill->psk_pfcmp.creatorid == 0) 6174 kill->psk_pfcmp.creatorid = V_pf_status.hostid; 6175 if ((s = pf_find_state_byid(kill->psk_pfcmp.id, 6176 kill->psk_pfcmp.creatorid))) { 6177 pf_remove_state(s); 6178 *killed = 1; 6179 } 6180 return; 6181 } 6182 6183 for (unsigned int i = 0; i <= V_pf_hashmask; i++) 6184 *killed += pf_killstates_row(kill, &V_pf_idhash[i]); 6185 } 6186 6187 static int 6188 pf_killstates_nv(struct pfioc_nv *nv) 6189 { 6190 struct pf_kstate_kill kill; 6191 struct epoch_tracker et; 6192 nvlist_t *nvl = NULL; 6193 void *nvlpacked = NULL; 6194 int error = 0; 6195 unsigned int killed = 0; 6196 6197 #define ERROUT(x) ERROUT_FUNCTION(on_error, x) 6198 6199 if (nv->len > pf_ioctl_maxcount) 6200 ERROUT(ENOMEM); 6201 6202 nvlpacked = malloc(nv->len, M_NVLIST, M_WAITOK); 6203 error = copyin(nv->data, nvlpacked, nv->len); 6204 if (error) 6205 ERROUT(error); 6206 6207 nvl = nvlist_unpack(nvlpacked, nv->len, 0); 6208 if (nvl == NULL) 6209 ERROUT(EBADMSG); 6210 6211 error = pf_nvstate_kill_to_kstate_kill(nvl, &kill); 6212 if (error) 6213 ERROUT(error); 6214 6215 NET_EPOCH_ENTER(et); 6216 pf_killstates(&kill, &killed); 6217 NET_EPOCH_EXIT(et); 6218 6219 free(nvlpacked, M_NVLIST); 6220 nvlpacked = NULL; 6221 nvlist_destroy(nvl); 6222 nvl = nvlist_create(0); 6223 if (nvl == NULL) 6224 ERROUT(ENOMEM); 6225 6226 nvlist_add_number(nvl, "killed", killed); 6227 6228 nvlpacked = nvlist_pack(nvl, &nv->len); 6229 if (nvlpacked == NULL) 6230 ERROUT(ENOMEM); 6231 6232 if (nv->size == 0) 6233 ERROUT(0); 6234 else if (nv->size < nv->len) 6235 ERROUT(ENOSPC); 6236 6237 error = copyout(nvlpacked, nv->data, nv->len); 6238 6239 on_error: 6240 nvlist_destroy(nvl); 6241 free(nvlpacked, M_NVLIST); 6242 return (error); 6243 } 6244 6245 static int 6246 pf_clearstates_nv(struct pfioc_nv *nv) 6247 { 6248 struct pf_kstate_kill kill; 6249 struct epoch_tracker et; 6250 nvlist_t *nvl = NULL; 6251 void *nvlpacked = NULL; 6252 int error = 0; 6253 unsigned int killed; 6254 6255 #define ERROUT(x) ERROUT_FUNCTION(on_error, x) 6256 6257 if (nv->len > pf_ioctl_maxcount) 6258 ERROUT(ENOMEM); 6259 6260 nvlpacked = malloc(nv->len, M_NVLIST, M_WAITOK); 6261 error = copyin(nv->data, nvlpacked, nv->len); 6262 if (error) 6263 ERROUT(error); 6264 6265 nvl = nvlist_unpack(nvlpacked, nv->len, 0); 6266 if (nvl == NULL) 6267 ERROUT(EBADMSG); 6268 6269 error = pf_nvstate_kill_to_kstate_kill(nvl, &kill); 6270 if (error) 6271 ERROUT(error); 6272 6273 NET_EPOCH_ENTER(et); 6274 killed = pf_clear_states(&kill); 6275 NET_EPOCH_EXIT(et); 6276 6277 free(nvlpacked, M_NVLIST); 6278 nvlpacked = NULL; 6279 nvlist_destroy(nvl); 6280 nvl = nvlist_create(0); 6281 if (nvl == NULL) 6282 ERROUT(ENOMEM); 6283 6284 nvlist_add_number(nvl, "killed", killed); 6285 6286 nvlpacked = nvlist_pack(nvl, &nv->len); 6287 if (nvlpacked == NULL) 6288 ERROUT(ENOMEM); 6289 6290 if (nv->size == 0) 6291 ERROUT(0); 6292 else if (nv->size < nv->len) 6293 ERROUT(ENOSPC); 6294 6295 error = copyout(nvlpacked, nv->data, nv->len); 6296 6297 #undef ERROUT 6298 on_error: 6299 nvlist_destroy(nvl); 6300 free(nvlpacked, M_NVLIST); 6301 return (error); 6302 } 6303 6304 static int 6305 pf_getstate(struct pfioc_nv *nv) 6306 { 6307 nvlist_t *nvl = NULL, *nvls; 6308 void *nvlpacked = NULL; 6309 struct pf_kstate *s = NULL; 6310 int error = 0; 6311 uint64_t id, creatorid; 6312 6313 #define ERROUT(x) ERROUT_FUNCTION(errout, x) 6314 6315 if (nv->len > pf_ioctl_maxcount) 6316 ERROUT(ENOMEM); 6317 6318 nvlpacked = malloc(nv->len, M_NVLIST, M_WAITOK); 6319 error = copyin(nv->data, nvlpacked, nv->len); 6320 if (error) 6321 ERROUT(error); 6322 6323 nvl = nvlist_unpack(nvlpacked, nv->len, 0); 6324 if (nvl == NULL) 6325 ERROUT(EBADMSG); 6326 6327 PFNV_CHK(pf_nvuint64(nvl, "id", &id)); 6328 PFNV_CHK(pf_nvuint64(nvl, "creatorid", &creatorid)); 6329 6330 s = pf_find_state_byid(id, creatorid); 6331 if (s == NULL) 6332 ERROUT(ENOENT); 6333 6334 free(nvlpacked, M_NVLIST); 6335 nvlpacked = NULL; 6336 nvlist_destroy(nvl); 6337 nvl = nvlist_create(0); 6338 if (nvl == NULL) 6339 ERROUT(ENOMEM); 6340 6341 nvls = pf_state_to_nvstate(s); 6342 if (nvls == NULL) 6343 ERROUT(ENOMEM); 6344 6345 nvlist_add_nvlist(nvl, "state", nvls); 6346 nvlist_destroy(nvls); 6347 6348 nvlpacked = nvlist_pack(nvl, &nv->len); 6349 if (nvlpacked == NULL) 6350 ERROUT(ENOMEM); 6351 6352 if (nv->size == 0) 6353 ERROUT(0); 6354 else if (nv->size < nv->len) 6355 ERROUT(ENOSPC); 6356 6357 error = copyout(nvlpacked, nv->data, nv->len); 6358 6359 #undef ERROUT 6360 errout: 6361 if (s != NULL) 6362 PF_STATE_UNLOCK(s); 6363 free(nvlpacked, M_NVLIST); 6364 nvlist_destroy(nvl); 6365 return (error); 6366 } 6367 6368 /* 6369 * XXX - Check for version mismatch!!! 6370 */ 6371 6372 /* 6373 * Duplicate pfctl -Fa operation to get rid of as much as we can. 6374 */ 6375 static int 6376 shutdown_pf(void) 6377 { 6378 int error = 0; 6379 u_int32_t t[5]; 6380 char nn = '\0'; 6381 struct pf_kanchor *anchor; 6382 struct pf_keth_anchor *eth_anchor; 6383 int rs_num; 6384 6385 do { 6386 /* Unlink rules of all user defined anchors */ 6387 RB_FOREACH(anchor, pf_kanchor_global, &V_pf_anchors) { 6388 /* Wildcard based anchors may not have a respective 6389 * explicit anchor rule or they may be left empty 6390 * without rules. It leads to anchor.refcnt=0, and the 6391 * rest of the logic does not expect it. */ 6392 if (anchor->refcnt == 0) 6393 anchor->refcnt = 1; 6394 for (rs_num = 0; rs_num < PF_RULESET_MAX; ++rs_num) { 6395 if ((error = pf_begin_rules(&t[rs_num], rs_num, 6396 anchor->path)) != 0) { 6397 DPFPRINTF(PF_DEBUG_MISC, ("%s: " 6398 "anchor.path=%s rs_num=%d\n", 6399 __func__, anchor->path, rs_num)); 6400 goto error; /* XXX: rollback? */ 6401 } 6402 } 6403 for (rs_num = 0; rs_num < PF_RULESET_MAX; ++rs_num) { 6404 error = pf_commit_rules(t[rs_num], rs_num, 6405 anchor->path); 6406 MPASS(error == 0); 6407 } 6408 } 6409 6410 /* Unlink rules of all user defined ether anchors */ 6411 RB_FOREACH(eth_anchor, pf_keth_anchor_global, 6412 &V_pf_keth_anchors) { 6413 /* Wildcard based anchors may not have a respective 6414 * explicit anchor rule or they may be left empty 6415 * without rules. It leads to anchor.refcnt=0, and the 6416 * rest of the logic does not expect it. */ 6417 if (eth_anchor->refcnt == 0) 6418 eth_anchor->refcnt = 1; 6419 if ((error = pf_begin_eth(&t[0], eth_anchor->path)) 6420 != 0) { 6421 DPFPRINTF(PF_DEBUG_MISC, ("%s: eth " 6422 "anchor.path=%s\n", __func__, 6423 eth_anchor->path)); 6424 goto error; 6425 } 6426 error = pf_commit_eth(t[0], eth_anchor->path); 6427 MPASS(error == 0); 6428 } 6429 6430 if ((error = pf_begin_rules(&t[0], PF_RULESET_SCRUB, &nn)) 6431 != 0) { 6432 DPFPRINTF(PF_DEBUG_MISC, ("%s: SCRUB\n", __func__)); 6433 break; 6434 } 6435 if ((error = pf_begin_rules(&t[1], PF_RULESET_FILTER, &nn)) 6436 != 0) { 6437 DPFPRINTF(PF_DEBUG_MISC, ("%s: FILTER\n", __func__)); 6438 break; /* XXX: rollback? */ 6439 } 6440 if ((error = pf_begin_rules(&t[2], PF_RULESET_NAT, &nn)) 6441 != 0) { 6442 DPFPRINTF(PF_DEBUG_MISC, ("%s: NAT\n", __func__)); 6443 break; /* XXX: rollback? */ 6444 } 6445 if ((error = pf_begin_rules(&t[3], PF_RULESET_BINAT, &nn)) 6446 != 0) { 6447 DPFPRINTF(PF_DEBUG_MISC, ("%s: BINAT\n", __func__)); 6448 break; /* XXX: rollback? */ 6449 } 6450 if ((error = pf_begin_rules(&t[4], PF_RULESET_RDR, &nn)) 6451 != 0) { 6452 DPFPRINTF(PF_DEBUG_MISC, ("%s: RDR\n", __func__)); 6453 break; /* XXX: rollback? */ 6454 } 6455 6456 error = pf_commit_rules(t[0], PF_RULESET_SCRUB, &nn); 6457 MPASS(error == 0); 6458 error = pf_commit_rules(t[1], PF_RULESET_FILTER, &nn); 6459 MPASS(error == 0); 6460 error = pf_commit_rules(t[2], PF_RULESET_NAT, &nn); 6461 MPASS(error == 0); 6462 error = pf_commit_rules(t[3], PF_RULESET_BINAT, &nn); 6463 MPASS(error == 0); 6464 error = pf_commit_rules(t[4], PF_RULESET_RDR, &nn); 6465 MPASS(error == 0); 6466 6467 if ((error = pf_clear_tables()) != 0) 6468 break; 6469 6470 if ((error = pf_begin_eth(&t[0], &nn)) != 0) { 6471 DPFPRINTF(PF_DEBUG_MISC, ("%s: eth\n", __func__)); 6472 break; 6473 } 6474 error = pf_commit_eth(t[0], &nn); 6475 MPASS(error == 0); 6476 6477 #ifdef ALTQ 6478 if ((error = pf_begin_altq(&t[0])) != 0) { 6479 DPFPRINTF(PF_DEBUG_MISC, ("%s: ALTQ\n", __func__)); 6480 break; 6481 } 6482 pf_commit_altq(t[0]); 6483 #endif 6484 6485 pf_clear_all_states(); 6486 6487 pf_kill_srcnodes(NULL); 6488 6489 /* status does not use malloced mem so no need to cleanup */ 6490 /* fingerprints and interfaces have their own cleanup code */ 6491 } while(0); 6492 6493 error: 6494 return (error); 6495 } 6496 6497 static pfil_return_t 6498 pf_check_return(int chk, struct mbuf **m) 6499 { 6500 6501 switch (chk) { 6502 case PF_PASS: 6503 if (*m == NULL) 6504 return (PFIL_CONSUMED); 6505 else 6506 return (PFIL_PASS); 6507 break; 6508 default: 6509 if (*m != NULL) { 6510 m_freem(*m); 6511 *m = NULL; 6512 } 6513 return (PFIL_DROPPED); 6514 } 6515 } 6516 6517 static pfil_return_t 6518 pf_eth_check_in(struct mbuf **m, struct ifnet *ifp, int flags, 6519 void *ruleset __unused, struct inpcb *inp) 6520 { 6521 int chk; 6522 6523 CURVNET_ASSERT_SET(); 6524 6525 chk = pf_test_eth(PF_IN, flags, ifp, m, inp); 6526 6527 return (pf_check_return(chk, m)); 6528 } 6529 6530 static pfil_return_t 6531 pf_eth_check_out(struct mbuf **m, struct ifnet *ifp, int flags, 6532 void *ruleset __unused, struct inpcb *inp) 6533 { 6534 int chk; 6535 6536 CURVNET_ASSERT_SET(); 6537 6538 chk = pf_test_eth(PF_OUT, flags, ifp, m, inp); 6539 6540 return (pf_check_return(chk, m)); 6541 } 6542 6543 #ifdef INET 6544 static pfil_return_t 6545 pf_check_in(struct mbuf **m, struct ifnet *ifp, int flags, 6546 void *ruleset __unused, struct inpcb *inp) 6547 { 6548 int chk; 6549 6550 CURVNET_ASSERT_SET(); 6551 6552 chk = pf_test(AF_INET, PF_IN, flags, ifp, m, inp, NULL); 6553 6554 return (pf_check_return(chk, m)); 6555 } 6556 6557 static pfil_return_t 6558 pf_check_out(struct mbuf **m, struct ifnet *ifp, int flags, 6559 void *ruleset __unused, struct inpcb *inp) 6560 { 6561 int chk; 6562 6563 CURVNET_ASSERT_SET(); 6564 6565 chk = pf_test(AF_INET, PF_OUT, flags, ifp, m, inp, NULL); 6566 6567 return (pf_check_return(chk, m)); 6568 } 6569 #endif 6570 6571 #ifdef INET6 6572 static pfil_return_t 6573 pf_check6_in(struct mbuf **m, struct ifnet *ifp, int flags, 6574 void *ruleset __unused, struct inpcb *inp) 6575 { 6576 int chk; 6577 6578 CURVNET_ASSERT_SET(); 6579 6580 /* 6581 * In case of loopback traffic IPv6 uses the real interface in 6582 * order to support scoped addresses. In order to support stateful 6583 * filtering we have change this to lo0 as it is the case in IPv4. 6584 */ 6585 chk = pf_test(AF_INET6, PF_IN, flags, (*m)->m_flags & M_LOOP ? V_loif : ifp, 6586 m, inp, NULL); 6587 6588 return (pf_check_return(chk, m)); 6589 } 6590 6591 static pfil_return_t 6592 pf_check6_out(struct mbuf **m, struct ifnet *ifp, int flags, 6593 void *ruleset __unused, struct inpcb *inp) 6594 { 6595 int chk; 6596 6597 CURVNET_ASSERT_SET(); 6598 6599 chk = pf_test(AF_INET6, PF_OUT, flags, ifp, m, inp, NULL); 6600 6601 return (pf_check_return(chk, m)); 6602 } 6603 #endif /* INET6 */ 6604 6605 VNET_DEFINE_STATIC(pfil_hook_t, pf_eth_in_hook); 6606 VNET_DEFINE_STATIC(pfil_hook_t, pf_eth_out_hook); 6607 #define V_pf_eth_in_hook VNET(pf_eth_in_hook) 6608 #define V_pf_eth_out_hook VNET(pf_eth_out_hook) 6609 6610 #ifdef INET 6611 VNET_DEFINE_STATIC(pfil_hook_t, pf_ip4_in_hook); 6612 VNET_DEFINE_STATIC(pfil_hook_t, pf_ip4_out_hook); 6613 #define V_pf_ip4_in_hook VNET(pf_ip4_in_hook) 6614 #define V_pf_ip4_out_hook VNET(pf_ip4_out_hook) 6615 #endif 6616 #ifdef INET6 6617 VNET_DEFINE_STATIC(pfil_hook_t, pf_ip6_in_hook); 6618 VNET_DEFINE_STATIC(pfil_hook_t, pf_ip6_out_hook); 6619 #define V_pf_ip6_in_hook VNET(pf_ip6_in_hook) 6620 #define V_pf_ip6_out_hook VNET(pf_ip6_out_hook) 6621 #endif 6622 6623 static void 6624 hook_pf_eth(void) 6625 { 6626 struct pfil_hook_args pha = { 6627 .pa_version = PFIL_VERSION, 6628 .pa_modname = "pf", 6629 .pa_type = PFIL_TYPE_ETHERNET, 6630 }; 6631 struct pfil_link_args pla = { 6632 .pa_version = PFIL_VERSION, 6633 }; 6634 int ret __diagused; 6635 6636 if (atomic_load_bool(&V_pf_pfil_eth_hooked)) 6637 return; 6638 6639 pha.pa_mbuf_chk = pf_eth_check_in; 6640 pha.pa_flags = PFIL_IN; 6641 pha.pa_rulname = "eth-in"; 6642 V_pf_eth_in_hook = pfil_add_hook(&pha); 6643 pla.pa_flags = PFIL_IN | PFIL_HEADPTR | PFIL_HOOKPTR; 6644 pla.pa_head = V_link_pfil_head; 6645 pla.pa_hook = V_pf_eth_in_hook; 6646 ret = pfil_link(&pla); 6647 MPASS(ret == 0); 6648 pha.pa_mbuf_chk = pf_eth_check_out; 6649 pha.pa_flags = PFIL_OUT; 6650 pha.pa_rulname = "eth-out"; 6651 V_pf_eth_out_hook = pfil_add_hook(&pha); 6652 pla.pa_flags = PFIL_OUT | PFIL_HEADPTR | PFIL_HOOKPTR; 6653 pla.pa_head = V_link_pfil_head; 6654 pla.pa_hook = V_pf_eth_out_hook; 6655 ret = pfil_link(&pla); 6656 MPASS(ret == 0); 6657 6658 atomic_store_bool(&V_pf_pfil_eth_hooked, true); 6659 } 6660 6661 static void 6662 hook_pf(void) 6663 { 6664 struct pfil_hook_args pha = { 6665 .pa_version = PFIL_VERSION, 6666 .pa_modname = "pf", 6667 }; 6668 struct pfil_link_args pla = { 6669 .pa_version = PFIL_VERSION, 6670 }; 6671 int ret __diagused; 6672 6673 if (atomic_load_bool(&V_pf_pfil_hooked)) 6674 return; 6675 6676 #ifdef INET 6677 pha.pa_type = PFIL_TYPE_IP4; 6678 pha.pa_mbuf_chk = pf_check_in; 6679 pha.pa_flags = PFIL_IN; 6680 pha.pa_rulname = "default-in"; 6681 V_pf_ip4_in_hook = pfil_add_hook(&pha); 6682 pla.pa_flags = PFIL_IN | PFIL_HEADPTR | PFIL_HOOKPTR; 6683 pla.pa_head = V_inet_pfil_head; 6684 pla.pa_hook = V_pf_ip4_in_hook; 6685 ret = pfil_link(&pla); 6686 MPASS(ret == 0); 6687 pha.pa_mbuf_chk = pf_check_out; 6688 pha.pa_flags = PFIL_OUT; 6689 pha.pa_rulname = "default-out"; 6690 V_pf_ip4_out_hook = pfil_add_hook(&pha); 6691 pla.pa_flags = PFIL_OUT | PFIL_HEADPTR | PFIL_HOOKPTR; 6692 pla.pa_head = V_inet_pfil_head; 6693 pla.pa_hook = V_pf_ip4_out_hook; 6694 ret = pfil_link(&pla); 6695 MPASS(ret == 0); 6696 if (V_pf_filter_local) { 6697 pla.pa_flags = PFIL_OUT | PFIL_HEADPTR | PFIL_HOOKPTR; 6698 pla.pa_head = V_inet_local_pfil_head; 6699 pla.pa_hook = V_pf_ip4_out_hook; 6700 ret = pfil_link(&pla); 6701 MPASS(ret == 0); 6702 } 6703 #endif 6704 #ifdef INET6 6705 pha.pa_type = PFIL_TYPE_IP6; 6706 pha.pa_mbuf_chk = pf_check6_in; 6707 pha.pa_flags = PFIL_IN; 6708 pha.pa_rulname = "default-in6"; 6709 V_pf_ip6_in_hook = pfil_add_hook(&pha); 6710 pla.pa_flags = PFIL_IN | PFIL_HEADPTR | PFIL_HOOKPTR; 6711 pla.pa_head = V_inet6_pfil_head; 6712 pla.pa_hook = V_pf_ip6_in_hook; 6713 ret = pfil_link(&pla); 6714 MPASS(ret == 0); 6715 pha.pa_mbuf_chk = pf_check6_out; 6716 pha.pa_rulname = "default-out6"; 6717 pha.pa_flags = PFIL_OUT; 6718 V_pf_ip6_out_hook = pfil_add_hook(&pha); 6719 pla.pa_flags = PFIL_OUT | PFIL_HEADPTR | PFIL_HOOKPTR; 6720 pla.pa_head = V_inet6_pfil_head; 6721 pla.pa_hook = V_pf_ip6_out_hook; 6722 ret = pfil_link(&pla); 6723 MPASS(ret == 0); 6724 if (V_pf_filter_local) { 6725 pla.pa_flags = PFIL_OUT | PFIL_HEADPTR | PFIL_HOOKPTR; 6726 pla.pa_head = V_inet6_local_pfil_head; 6727 pla.pa_hook = V_pf_ip6_out_hook; 6728 ret = pfil_link(&pla); 6729 MPASS(ret == 0); 6730 } 6731 #endif 6732 6733 atomic_store_bool(&V_pf_pfil_hooked, true); 6734 } 6735 6736 static void 6737 dehook_pf_eth(void) 6738 { 6739 6740 if (!atomic_load_bool(&V_pf_pfil_eth_hooked)) 6741 return; 6742 6743 pfil_remove_hook(V_pf_eth_in_hook); 6744 pfil_remove_hook(V_pf_eth_out_hook); 6745 6746 atomic_store_bool(&V_pf_pfil_eth_hooked, false); 6747 } 6748 6749 static void 6750 dehook_pf(void) 6751 { 6752 6753 if (!atomic_load_bool(&V_pf_pfil_hooked)) 6754 return; 6755 6756 #ifdef INET 6757 pfil_remove_hook(V_pf_ip4_in_hook); 6758 pfil_remove_hook(V_pf_ip4_out_hook); 6759 #endif 6760 #ifdef INET6 6761 pfil_remove_hook(V_pf_ip6_in_hook); 6762 pfil_remove_hook(V_pf_ip6_out_hook); 6763 #endif 6764 6765 atomic_store_bool(&V_pf_pfil_hooked, false); 6766 } 6767 6768 static void 6769 pf_load_vnet(void) 6770 { 6771 V_pf_tag_z = uma_zcreate("pf tags", sizeof(struct pf_tagname), 6772 NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); 6773 6774 rm_init_flags(&V_pf_rules_lock, "pf rulesets", RM_RECURSE); 6775 sx_init(&V_pf_ioctl_lock, "pf ioctl"); 6776 6777 pf_init_tagset(&V_pf_tags, &pf_rule_tag_hashsize, 6778 PF_RULE_TAG_HASH_SIZE_DEFAULT); 6779 #ifdef ALTQ 6780 pf_init_tagset(&V_pf_qids, &pf_queue_tag_hashsize, 6781 PF_QUEUE_TAG_HASH_SIZE_DEFAULT); 6782 #endif 6783 6784 V_pf_keth = &V_pf_main_keth_anchor.ruleset; 6785 6786 pfattach_vnet(); 6787 V_pf_vnet_active = 1; 6788 } 6789 6790 static int 6791 pf_load(void) 6792 { 6793 int error; 6794 6795 sx_init(&pf_end_lock, "pf end thread"); 6796 6797 pf_mtag_initialize(); 6798 6799 pf_dev = make_dev(&pf_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, PF_NAME); 6800 if (pf_dev == NULL) 6801 return (ENOMEM); 6802 6803 pf_end_threads = 0; 6804 error = kproc_create(pf_purge_thread, NULL, &pf_purge_proc, 0, 0, "pf purge"); 6805 if (error != 0) 6806 return (error); 6807 6808 pfi_initialize(); 6809 6810 return (0); 6811 } 6812 6813 static void 6814 pf_unload_vnet(void) 6815 { 6816 int ret __diagused; 6817 6818 V_pf_vnet_active = 0; 6819 V_pf_status.running = 0; 6820 dehook_pf(); 6821 dehook_pf_eth(); 6822 6823 PF_RULES_WLOCK(); 6824 pf_syncookies_cleanup(); 6825 shutdown_pf(); 6826 PF_RULES_WUNLOCK(); 6827 6828 ret = swi_remove(V_pf_swi_cookie); 6829 MPASS(ret == 0); 6830 ret = intr_event_destroy(V_pf_swi_ie); 6831 MPASS(ret == 0); 6832 6833 pf_unload_vnet_purge(); 6834 6835 pf_normalize_cleanup(); 6836 PF_RULES_WLOCK(); 6837 pfi_cleanup_vnet(); 6838 PF_RULES_WUNLOCK(); 6839 pfr_cleanup(); 6840 pf_osfp_flush(); 6841 pf_cleanup(); 6842 if (IS_DEFAULT_VNET(curvnet)) 6843 pf_mtag_cleanup(); 6844 6845 pf_cleanup_tagset(&V_pf_tags); 6846 #ifdef ALTQ 6847 pf_cleanup_tagset(&V_pf_qids); 6848 #endif 6849 uma_zdestroy(V_pf_tag_z); 6850 6851 #ifdef PF_WANT_32_TO_64_COUNTER 6852 PF_RULES_WLOCK(); 6853 LIST_REMOVE(V_pf_kifmarker, pfik_allkiflist); 6854 6855 MPASS(LIST_EMPTY(&V_pf_allkiflist)); 6856 MPASS(V_pf_allkifcount == 0); 6857 6858 LIST_REMOVE(&V_pf_default_rule, allrulelist); 6859 V_pf_allrulecount--; 6860 LIST_REMOVE(V_pf_rulemarker, allrulelist); 6861 6862 MPASS(LIST_EMPTY(&V_pf_allrulelist)); 6863 MPASS(V_pf_allrulecount == 0); 6864 6865 PF_RULES_WUNLOCK(); 6866 6867 free(V_pf_kifmarker, PFI_MTYPE); 6868 free(V_pf_rulemarker, M_PFRULE); 6869 #endif 6870 6871 /* Free counters last as we updated them during shutdown. */ 6872 pf_counter_u64_deinit(&V_pf_default_rule.evaluations); 6873 for (int i = 0; i < 2; i++) { 6874 pf_counter_u64_deinit(&V_pf_default_rule.packets[i]); 6875 pf_counter_u64_deinit(&V_pf_default_rule.bytes[i]); 6876 } 6877 counter_u64_free(V_pf_default_rule.states_cur); 6878 counter_u64_free(V_pf_default_rule.states_tot); 6879 for (pf_sn_types_t sn_type=0; sn_type<PF_SN_MAX; sn_type++) 6880 counter_u64_free(V_pf_default_rule.src_nodes[sn_type]); 6881 uma_zfree_pcpu(pf_timestamp_pcpu_zone, V_pf_default_rule.timestamp); 6882 6883 for (int i = 0; i < PFRES_MAX; i++) 6884 counter_u64_free(V_pf_status.counters[i]); 6885 for (int i = 0; i < KLCNT_MAX; i++) 6886 counter_u64_free(V_pf_status.lcounters[i]); 6887 for (int i = 0; i < FCNT_MAX; i++) 6888 pf_counter_u64_deinit(&V_pf_status.fcounters[i]); 6889 for (int i = 0; i < SCNT_MAX; i++) 6890 counter_u64_free(V_pf_status.scounters[i]); 6891 6892 rm_destroy(&V_pf_rules_lock); 6893 sx_destroy(&V_pf_ioctl_lock); 6894 } 6895 6896 static void 6897 pf_unload(void) 6898 { 6899 6900 sx_xlock(&pf_end_lock); 6901 pf_end_threads = 1; 6902 while (pf_end_threads < 2) { 6903 wakeup_one(pf_purge_thread); 6904 sx_sleep(pf_purge_proc, &pf_end_lock, 0, "pftmo", 0); 6905 } 6906 sx_xunlock(&pf_end_lock); 6907 6908 pf_nl_unregister(); 6909 6910 if (pf_dev != NULL) 6911 destroy_dev(pf_dev); 6912 6913 pfi_cleanup(); 6914 6915 sx_destroy(&pf_end_lock); 6916 } 6917 6918 static void 6919 vnet_pf_init(void *unused __unused) 6920 { 6921 6922 pf_load_vnet(); 6923 } 6924 VNET_SYSINIT(vnet_pf_init, SI_SUB_PROTO_FIREWALL, SI_ORDER_THIRD, 6925 vnet_pf_init, NULL); 6926 6927 static void 6928 vnet_pf_uninit(const void *unused __unused) 6929 { 6930 6931 pf_unload_vnet(); 6932 } 6933 SYSUNINIT(pf_unload, SI_SUB_PROTO_FIREWALL, SI_ORDER_SECOND, pf_unload, NULL); 6934 VNET_SYSUNINIT(vnet_pf_uninit, SI_SUB_PROTO_FIREWALL, SI_ORDER_THIRD, 6935 vnet_pf_uninit, NULL); 6936 6937 static int 6938 pf_modevent(module_t mod, int type, void *data) 6939 { 6940 int error = 0; 6941 6942 switch(type) { 6943 case MOD_LOAD: 6944 error = pf_load(); 6945 pf_nl_register(); 6946 break; 6947 case MOD_UNLOAD: 6948 /* Handled in SYSUNINIT(pf_unload) to ensure it's done after 6949 * the vnet_pf_uninit()s */ 6950 break; 6951 default: 6952 error = EINVAL; 6953 break; 6954 } 6955 6956 return (error); 6957 } 6958 6959 static moduledata_t pf_mod = { 6960 "pf", 6961 pf_modevent, 6962 0 6963 }; 6964 6965 DECLARE_MODULE(pf, pf_mod, SI_SUB_PROTO_FIREWALL, SI_ORDER_SECOND); 6966 MODULE_DEPEND(pf, netlink, 1, 1, 1); 6967 MODULE_DEPEND(pf, crypto, 1, 1, 1); 6968 MODULE_VERSION(pf, PF_MODVER); 6969