1 /* $OpenBSD: pf_if.c,v 1.56 2009/03/09 13:53:10 mcbride Exp $ */ 2 3 /* 4 * Copyright 2005 Henning Brauer <henning@openbsd.org> 5 * Copyright 2005 Ryan McBride <mcbride@openbsd.org> 6 * Copyright (c) 2001 Daniel Hartmeier 7 * Copyright (c) 2003 Cedric Berger 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 14 * - Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * - Redistributions in binary form must reproduce the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer in the documentation and/or other materials provided 19 * with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 31 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/mbuf.h> 38 #include <sys/filio.h> 39 #include <sys/socket.h> 40 #include <sys/socketvar.h> 41 #include <sys/kernel.h> 42 #include <sys/device.h> 43 #include <sys/time.h> 44 #include <sys/pool.h> 45 46 #include <net/if.h> 47 #include <net/if_types.h> 48 49 #include <netinet/in.h> 50 #include <netinet/in_var.h> 51 #include <netinet/in_systm.h> 52 #include <netinet/ip.h> 53 #include <netinet/ip_var.h> 54 55 #include <net/pfvar.h> 56 57 #ifdef INET6 58 #include <netinet/ip6.h> 59 #endif /* INET6 */ 60 61 struct pfi_kif *pfi_all = NULL; 62 struct pool pfi_addr_pl; 63 struct pfi_ifhead pfi_ifs; 64 long pfi_update = 1; 65 struct pfr_addr *pfi_buffer; 66 int pfi_buffer_cnt; 67 int pfi_buffer_max; 68 69 void pfi_kif_update(struct pfi_kif *); 70 void pfi_dynaddr_update(struct pfi_dynaddr *dyn); 71 void pfi_table_update(struct pfr_ktable *, struct pfi_kif *, 72 int, int); 73 void pfi_kifaddr_update(void *); 74 void pfi_instance_add(struct ifnet *, int, int); 75 void pfi_address_add(struct sockaddr *, int, int); 76 int pfi_if_compare(struct pfi_kif *, struct pfi_kif *); 77 int pfi_skip_if(const char *, struct pfi_kif *); 78 int pfi_unmask(void *); 79 80 RB_PROTOTYPE(pfi_ifhead, pfi_kif, pfik_tree, pfi_if_compare); 81 RB_GENERATE(pfi_ifhead, pfi_kif, pfik_tree, pfi_if_compare); 82 83 #define PFI_BUFFER_MAX 0x10000 84 #define PFI_MTYPE M_IFADDR 85 86 void 87 pfi_initialize(void) 88 { 89 if (pfi_all != NULL) /* already initialized */ 90 return; 91 92 pool_init(&pfi_addr_pl, sizeof(struct pfi_dynaddr), 0, 0, 0, 93 "pfiaddrpl", &pool_allocator_nointr); 94 pfi_buffer_max = 64; 95 pfi_buffer = malloc(pfi_buffer_max * sizeof(*pfi_buffer), 96 PFI_MTYPE, M_WAITOK); 97 98 if ((pfi_all = pfi_kif_get(IFG_ALL)) == NULL) 99 panic("pfi_kif_get for pfi_all failed"); 100 } 101 102 struct pfi_kif * 103 pfi_kif_get(const char *kif_name) 104 { 105 struct pfi_kif *kif; 106 struct pfi_kif_cmp s; 107 108 bzero(&s, sizeof(s)); 109 strlcpy(s.pfik_name, kif_name, sizeof(s.pfik_name)); 110 if ((kif = RB_FIND(pfi_ifhead, &pfi_ifs, (struct pfi_kif *)&s)) != NULL) 111 return (kif); 112 113 /* create new one */ 114 if ((kif = malloc(sizeof(*kif), PFI_MTYPE, M_DONTWAIT|M_ZERO)) == NULL) 115 return (NULL); 116 117 strlcpy(kif->pfik_name, kif_name, sizeof(kif->pfik_name)); 118 kif->pfik_tzero = time_second; 119 TAILQ_INIT(&kif->pfik_dynaddrs); 120 121 RB_INSERT(pfi_ifhead, &pfi_ifs, kif); 122 return (kif); 123 } 124 125 void 126 pfi_kif_ref(struct pfi_kif *kif, enum pfi_kif_refs what) 127 { 128 switch (what) { 129 case PFI_KIF_REF_RULE: 130 kif->pfik_rules++; 131 break; 132 case PFI_KIF_REF_STATE: 133 kif->pfik_states++; 134 break; 135 default: 136 panic("pfi_kif_ref with unknown type"); 137 } 138 } 139 140 void 141 pfi_kif_unref(struct pfi_kif *kif, enum pfi_kif_refs what) 142 { 143 if (kif == NULL) 144 return; 145 146 switch (what) { 147 case PFI_KIF_REF_NONE: 148 break; 149 case PFI_KIF_REF_RULE: 150 if (kif->pfik_rules <= 0) { 151 printf("pfi_kif_unref: rules refcount <= 0\n"); 152 return; 153 } 154 kif->pfik_rules--; 155 break; 156 case PFI_KIF_REF_STATE: 157 if (kif->pfik_states <= 0) { 158 printf("pfi_kif_unref: state refcount <= 0\n"); 159 return; 160 } 161 kif->pfik_states--; 162 break; 163 default: 164 panic("pfi_kif_unref with unknown type"); 165 } 166 167 if (kif->pfik_ifp != NULL || kif->pfik_group != NULL || kif == pfi_all) 168 return; 169 170 if (kif->pfik_rules || kif->pfik_states) 171 return; 172 173 RB_REMOVE(pfi_ifhead, &pfi_ifs, kif); 174 free(kif, PFI_MTYPE); 175 } 176 177 int 178 pfi_kif_match(struct pfi_kif *rule_kif, struct pfi_kif *packet_kif) 179 { 180 struct ifg_list *p; 181 182 if (rule_kif == NULL || rule_kif == packet_kif) 183 return (1); 184 185 if (rule_kif->pfik_group != NULL) 186 TAILQ_FOREACH(p, &packet_kif->pfik_ifp->if_groups, ifgl_next) 187 if (p->ifgl_group == rule_kif->pfik_group) 188 return (1); 189 190 return (0); 191 } 192 193 void 194 pfi_attach_ifnet(struct ifnet *ifp) 195 { 196 struct pfi_kif *kif; 197 int s; 198 199 pfi_initialize(); 200 s = splsoftnet(); 201 pfi_update++; 202 if ((kif = pfi_kif_get(ifp->if_xname)) == NULL) 203 panic("pfi_kif_get failed"); 204 205 kif->pfik_ifp = ifp; 206 ifp->if_pf_kif = (caddr_t)kif; 207 208 if ((kif->pfik_ah_cookie = hook_establish(ifp->if_addrhooks, 1, 209 pfi_kifaddr_update, kif)) == NULL) 210 panic("pfi_attach_ifnet: cannot allocate '%s' address hook", 211 ifp->if_xname); 212 213 pfi_kif_update(kif); 214 215 splx(s); 216 } 217 218 void 219 pfi_detach_ifnet(struct ifnet *ifp) 220 { 221 int s; 222 struct pfi_kif *kif; 223 224 if ((kif = (struct pfi_kif *)ifp->if_pf_kif) == NULL) 225 return; 226 227 s = splsoftnet(); 228 pfi_update++; 229 hook_disestablish(ifp->if_addrhooks, kif->pfik_ah_cookie); 230 pfi_kif_update(kif); 231 232 kif->pfik_ifp = NULL; 233 ifp->if_pf_kif = NULL; 234 pfi_kif_unref(kif, PFI_KIF_REF_NONE); 235 splx(s); 236 } 237 238 void 239 pfi_attach_ifgroup(struct ifg_group *ifg) 240 { 241 struct pfi_kif *kif; 242 int s; 243 244 pfi_initialize(); 245 s = splsoftnet(); 246 pfi_update++; 247 if ((kif = pfi_kif_get(ifg->ifg_group)) == NULL) 248 panic("pfi_kif_get failed"); 249 250 kif->pfik_group = ifg; 251 ifg->ifg_pf_kif = (caddr_t)kif; 252 253 splx(s); 254 } 255 256 void 257 pfi_detach_ifgroup(struct ifg_group *ifg) 258 { 259 int s; 260 struct pfi_kif *kif; 261 262 if ((kif = (struct pfi_kif *)ifg->ifg_pf_kif) == NULL) 263 return; 264 265 s = splsoftnet(); 266 pfi_update++; 267 268 kif->pfik_group = NULL; 269 ifg->ifg_pf_kif = NULL; 270 pfi_kif_unref(kif, PFI_KIF_REF_NONE); 271 splx(s); 272 } 273 274 void 275 pfi_group_change(const char *group) 276 { 277 struct pfi_kif *kif; 278 int s; 279 280 s = splsoftnet(); 281 pfi_update++; 282 if ((kif = pfi_kif_get(group)) == NULL) 283 panic("pfi_kif_get failed"); 284 285 pfi_kif_update(kif); 286 287 splx(s); 288 } 289 290 int 291 pfi_match_addr(struct pfi_dynaddr *dyn, struct pf_addr *a, sa_family_t af) 292 { 293 switch (af) { 294 #ifdef INET 295 case AF_INET: 296 switch (dyn->pfid_acnt4) { 297 case 0: 298 return (0); 299 case 1: 300 return (PF_MATCHA(0, &dyn->pfid_addr4, 301 &dyn->pfid_mask4, a, AF_INET)); 302 default: 303 return (pfr_match_addr(dyn->pfid_kt, a, AF_INET)); 304 } 305 break; 306 #endif /* INET */ 307 #ifdef INET6 308 case AF_INET6: 309 switch (dyn->pfid_acnt6) { 310 case 0: 311 return (0); 312 case 1: 313 return (PF_MATCHA(0, &dyn->pfid_addr6, 314 &dyn->pfid_mask6, a, AF_INET6)); 315 default: 316 return (pfr_match_addr(dyn->pfid_kt, a, AF_INET6)); 317 } 318 break; 319 #endif /* INET6 */ 320 default: 321 return (0); 322 } 323 } 324 325 int 326 pfi_dynaddr_setup(struct pf_addr_wrap *aw, sa_family_t af) 327 { 328 struct pfi_dynaddr *dyn; 329 char tblname[PF_TABLE_NAME_SIZE]; 330 struct pf_ruleset *ruleset = NULL; 331 int s, rv = 0; 332 333 if (aw->type != PF_ADDR_DYNIFTL) 334 return (0); 335 if ((dyn = pool_get(&pfi_addr_pl, PR_WAITOK | PR_LIMITFAIL | PR_ZERO)) 336 == NULL) 337 return (1); 338 339 s = splsoftnet(); 340 if (!strcmp(aw->v.ifname, "self")) 341 dyn->pfid_kif = pfi_kif_get(IFG_ALL); 342 else 343 dyn->pfid_kif = pfi_kif_get(aw->v.ifname); 344 if (dyn->pfid_kif == NULL) { 345 rv = 1; 346 goto _bad; 347 } 348 pfi_kif_ref(dyn->pfid_kif, PFI_KIF_REF_RULE); 349 350 dyn->pfid_net = pfi_unmask(&aw->v.a.mask); 351 if (af == AF_INET && dyn->pfid_net == 32) 352 dyn->pfid_net = 128; 353 strlcpy(tblname, aw->v.ifname, sizeof(tblname)); 354 if (aw->iflags & PFI_AFLAG_NETWORK) 355 strlcat(tblname, ":network", sizeof(tblname)); 356 if (aw->iflags & PFI_AFLAG_BROADCAST) 357 strlcat(tblname, ":broadcast", sizeof(tblname)); 358 if (aw->iflags & PFI_AFLAG_PEER) 359 strlcat(tblname, ":peer", sizeof(tblname)); 360 if (aw->iflags & PFI_AFLAG_NOALIAS) 361 strlcat(tblname, ":0", sizeof(tblname)); 362 if (dyn->pfid_net != 128) 363 snprintf(tblname + strlen(tblname), 364 sizeof(tblname) - strlen(tblname), "/%d", dyn->pfid_net); 365 if ((ruleset = pf_find_or_create_ruleset(PF_RESERVED_ANCHOR)) == NULL) { 366 rv = 1; 367 goto _bad; 368 } 369 370 if ((dyn->pfid_kt = pfr_attach_table(ruleset, tblname, 1)) == NULL) { 371 rv = 1; 372 goto _bad; 373 } 374 375 dyn->pfid_kt->pfrkt_flags |= PFR_TFLAG_ACTIVE; 376 dyn->pfid_iflags = aw->iflags; 377 dyn->pfid_af = af; 378 379 TAILQ_INSERT_TAIL(&dyn->pfid_kif->pfik_dynaddrs, dyn, entry); 380 aw->p.dyn = dyn; 381 pfi_kif_update(dyn->pfid_kif); 382 splx(s); 383 return (0); 384 385 _bad: 386 if (dyn->pfid_kt != NULL) 387 pfr_detach_table(dyn->pfid_kt); 388 if (ruleset != NULL) 389 pf_remove_if_empty_ruleset(ruleset); 390 if (dyn->pfid_kif != NULL) 391 pfi_kif_unref(dyn->pfid_kif, PFI_KIF_REF_RULE); 392 pool_put(&pfi_addr_pl, dyn); 393 splx(s); 394 return (rv); 395 } 396 397 void 398 pfi_kif_update(struct pfi_kif *kif) 399 { 400 struct ifg_list *ifgl; 401 struct pfi_dynaddr *p; 402 403 /* update all dynaddr */ 404 TAILQ_FOREACH(p, &kif->pfik_dynaddrs, entry) 405 pfi_dynaddr_update(p); 406 407 /* again for all groups kif is member of */ 408 if (kif->pfik_ifp != NULL) 409 TAILQ_FOREACH(ifgl, &kif->pfik_ifp->if_groups, ifgl_next) 410 pfi_kif_update((struct pfi_kif *) 411 ifgl->ifgl_group->ifg_pf_kif); 412 } 413 414 void 415 pfi_dynaddr_update(struct pfi_dynaddr *dyn) 416 { 417 struct pfi_kif *kif; 418 struct pfr_ktable *kt; 419 420 if (dyn == NULL || dyn->pfid_kif == NULL || dyn->pfid_kt == NULL) 421 panic("pfi_dynaddr_update"); 422 423 kif = dyn->pfid_kif; 424 kt = dyn->pfid_kt; 425 426 if (kt->pfrkt_larg != pfi_update) { 427 /* this table needs to be brought up-to-date */ 428 pfi_table_update(kt, kif, dyn->pfid_net, dyn->pfid_iflags); 429 kt->pfrkt_larg = pfi_update; 430 } 431 pfr_dynaddr_update(kt, dyn); 432 } 433 434 void 435 pfi_table_update(struct pfr_ktable *kt, struct pfi_kif *kif, int net, int flags) 436 { 437 int e, size2 = 0; 438 struct ifg_member *ifgm; 439 440 pfi_buffer_cnt = 0; 441 442 if (kif->pfik_ifp != NULL) 443 pfi_instance_add(kif->pfik_ifp, net, flags); 444 else if (kif->pfik_group != NULL) 445 TAILQ_FOREACH(ifgm, &kif->pfik_group->ifg_members, ifgm_next) 446 pfi_instance_add(ifgm->ifgm_ifp, net, flags); 447 448 if ((e = pfr_set_addrs(&kt->pfrkt_t, pfi_buffer, pfi_buffer_cnt, &size2, 449 NULL, NULL, NULL, 0, PFR_TFLAG_ALLMASK))) 450 printf("pfi_table_update: cannot set %d new addresses " 451 "into table %s: %d\n", pfi_buffer_cnt, kt->pfrkt_name, e); 452 } 453 454 void 455 pfi_instance_add(struct ifnet *ifp, int net, int flags) 456 { 457 struct ifaddr *ia; 458 int got4 = 0, got6 = 0; 459 int net2, af; 460 461 if (ifp == NULL) 462 return; 463 TAILQ_FOREACH(ia, &ifp->if_addrlist, ifa_list) { 464 if (ia->ifa_addr == NULL) 465 continue; 466 af = ia->ifa_addr->sa_family; 467 if (af != AF_INET && af != AF_INET6) 468 continue; 469 if ((flags & PFI_AFLAG_BROADCAST) && af == AF_INET6) 470 continue; 471 if ((flags & PFI_AFLAG_BROADCAST) && 472 !(ifp->if_flags & IFF_BROADCAST)) 473 continue; 474 if ((flags & PFI_AFLAG_PEER) && 475 !(ifp->if_flags & IFF_POINTOPOINT)) 476 continue; 477 if ((flags & PFI_AFLAG_NETWORK) && af == AF_INET6 && 478 IN6_IS_ADDR_LINKLOCAL( 479 &((struct sockaddr_in6 *)ia->ifa_addr)->sin6_addr)) 480 continue; 481 if (flags & PFI_AFLAG_NOALIAS) { 482 if (af == AF_INET && got4) 483 continue; 484 if (af == AF_INET6 && got6) 485 continue; 486 } 487 if (af == AF_INET) 488 got4 = 1; 489 else if (af == AF_INET6) 490 got6 = 1; 491 net2 = net; 492 if (net2 == 128 && (flags & PFI_AFLAG_NETWORK)) { 493 if (af == AF_INET) 494 net2 = pfi_unmask(&((struct sockaddr_in *) 495 ia->ifa_netmask)->sin_addr); 496 else if (af == AF_INET6) 497 net2 = pfi_unmask(&((struct sockaddr_in6 *) 498 ia->ifa_netmask)->sin6_addr); 499 } 500 if (af == AF_INET && net2 > 32) 501 net2 = 32; 502 if (flags & PFI_AFLAG_BROADCAST) 503 pfi_address_add(ia->ifa_broadaddr, af, net2); 504 else if (flags & PFI_AFLAG_PEER) 505 pfi_address_add(ia->ifa_dstaddr, af, net2); 506 else 507 pfi_address_add(ia->ifa_addr, af, net2); 508 } 509 } 510 511 void 512 pfi_address_add(struct sockaddr *sa, int af, int net) 513 { 514 struct pfr_addr *p; 515 int i; 516 517 if (pfi_buffer_cnt >= pfi_buffer_max) { 518 int new_max = pfi_buffer_max * 2; 519 520 if (new_max > PFI_BUFFER_MAX) { 521 printf("pfi_address_add: address buffer full (%d/%d)\n", 522 pfi_buffer_cnt, PFI_BUFFER_MAX); 523 return; 524 } 525 p = malloc(new_max * sizeof(*pfi_buffer), PFI_MTYPE, 526 M_DONTWAIT); 527 if (p == NULL) { 528 printf("pfi_address_add: no memory to grow buffer " 529 "(%d/%d)\n", pfi_buffer_cnt, PFI_BUFFER_MAX); 530 return; 531 } 532 memcpy(pfi_buffer, p, pfi_buffer_cnt * sizeof(*pfi_buffer)); 533 /* no need to zero buffer */ 534 free(pfi_buffer, PFI_MTYPE); 535 pfi_buffer = p; 536 pfi_buffer_max = new_max; 537 } 538 if (af == AF_INET && net > 32) 539 net = 128; 540 p = pfi_buffer + pfi_buffer_cnt++; 541 bzero(p, sizeof(*p)); 542 p->pfra_af = af; 543 p->pfra_net = net; 544 if (af == AF_INET) 545 p->pfra_ip4addr = ((struct sockaddr_in *)sa)->sin_addr; 546 else if (af == AF_INET6) { 547 p->pfra_ip6addr = ((struct sockaddr_in6 *)sa)->sin6_addr; 548 if (IN6_IS_SCOPE_EMBED(&p->pfra_ip6addr)) 549 p->pfra_ip6addr.s6_addr16[1] = 0; 550 } 551 /* mask network address bits */ 552 if (net < 128) 553 ((caddr_t)p)[p->pfra_net/8] &= ~(0xFF >> (p->pfra_net%8)); 554 for (i = (p->pfra_net+7)/8; i < sizeof(p->pfra_u); i++) 555 ((caddr_t)p)[i] = 0; 556 } 557 558 void 559 pfi_dynaddr_remove(struct pf_addr_wrap *aw) 560 { 561 int s; 562 563 if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL || 564 aw->p.dyn->pfid_kif == NULL || aw->p.dyn->pfid_kt == NULL) 565 return; 566 567 s = splsoftnet(); 568 TAILQ_REMOVE(&aw->p.dyn->pfid_kif->pfik_dynaddrs, aw->p.dyn, entry); 569 pfi_kif_unref(aw->p.dyn->pfid_kif, PFI_KIF_REF_RULE); 570 aw->p.dyn->pfid_kif = NULL; 571 pfr_detach_table(aw->p.dyn->pfid_kt); 572 aw->p.dyn->pfid_kt = NULL; 573 pool_put(&pfi_addr_pl, aw->p.dyn); 574 aw->p.dyn = NULL; 575 splx(s); 576 } 577 578 void 579 pfi_dynaddr_copyout(struct pf_addr_wrap *aw) 580 { 581 if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL || 582 aw->p.dyn->pfid_kif == NULL) 583 return; 584 aw->p.dyncnt = aw->p.dyn->pfid_acnt4 + aw->p.dyn->pfid_acnt6; 585 } 586 587 void 588 pfi_kifaddr_update(void *v) 589 { 590 int s; 591 struct pfi_kif *kif = (struct pfi_kif *)v; 592 593 s = splsoftnet(); 594 pfi_update++; 595 pfi_kif_update(kif); 596 splx(s); 597 } 598 599 int 600 pfi_if_compare(struct pfi_kif *p, struct pfi_kif *q) 601 { 602 return (strncmp(p->pfik_name, q->pfik_name, IFNAMSIZ)); 603 } 604 605 void 606 pfi_update_status(const char *name, struct pf_status *pfs) 607 { 608 struct pfi_kif *p; 609 struct pfi_kif_cmp key; 610 struct ifg_member p_member, *ifgm; 611 TAILQ_HEAD(, ifg_member) ifg_members; 612 int i, j, k, s; 613 614 strlcpy(key.pfik_name, name, sizeof(key.pfik_name)); 615 s = splsoftnet(); 616 p = RB_FIND(pfi_ifhead, &pfi_ifs, (struct pfi_kif *)&key); 617 if (p == NULL) { 618 splx(s); 619 return; 620 } 621 if (p->pfik_group != NULL) { 622 bcopy(&p->pfik_group->ifg_members, &ifg_members, 623 sizeof(ifg_members)); 624 } else { 625 /* build a temporary list for p only */ 626 bzero(&p_member, sizeof(p_member)); 627 p_member.ifgm_ifp = p->pfik_ifp; 628 TAILQ_INIT(&ifg_members); 629 TAILQ_INSERT_TAIL(&ifg_members, &p_member, ifgm_next); 630 } 631 if (pfs) { 632 bzero(pfs->pcounters, sizeof(pfs->pcounters)); 633 bzero(pfs->bcounters, sizeof(pfs->bcounters)); 634 } 635 TAILQ_FOREACH(ifgm, &ifg_members, ifgm_next) { 636 if (ifgm->ifgm_ifp == NULL) 637 continue; 638 p = (struct pfi_kif *)ifgm->ifgm_ifp->if_pf_kif; 639 640 /* just clear statistics */ 641 if (pfs == NULL) { 642 bzero(p->pfik_packets, sizeof(p->pfik_packets)); 643 bzero(p->pfik_bytes, sizeof(p->pfik_bytes)); 644 p->pfik_tzero = time_second; 645 continue; 646 } 647 for (i = 0; i < 2; i++) 648 for (j = 0; j < 2; j++) 649 for (k = 0; k < 2; k++) { 650 pfs->pcounters[i][j][k] += 651 p->pfik_packets[i][j][k]; 652 pfs->bcounters[i][j] += 653 p->pfik_bytes[i][j][k]; 654 } 655 } 656 splx(s); 657 } 658 659 int 660 pfi_get_ifaces(const char *name, struct pfi_kif *buf, int *size) 661 { 662 struct pfi_kif *p, *nextp; 663 int s, n = 0; 664 665 s = splsoftnet(); 666 for (p = RB_MIN(pfi_ifhead, &pfi_ifs); p; p = nextp) { 667 nextp = RB_NEXT(pfi_ifhead, &pfi_ifs, p); 668 if (pfi_skip_if(name, p)) 669 continue; 670 if (*size > n++) { 671 if (!p->pfik_tzero) 672 p->pfik_tzero = time_second; 673 pfi_kif_ref(p, PFI_KIF_REF_RULE); 674 if (copyout(p, buf++, sizeof(*buf))) { 675 pfi_kif_unref(p, PFI_KIF_REF_RULE); 676 splx(s); 677 return (EFAULT); 678 } 679 nextp = RB_NEXT(pfi_ifhead, &pfi_ifs, p); 680 pfi_kif_unref(p, PFI_KIF_REF_RULE); 681 } 682 } 683 splx(s); 684 *size = n; 685 return (0); 686 } 687 688 int 689 pfi_skip_if(const char *filter, struct pfi_kif *p) 690 { 691 int n; 692 693 if (filter == NULL || !*filter) 694 return (0); 695 if (!strcmp(p->pfik_name, filter)) 696 return (0); /* exact match */ 697 n = strlen(filter); 698 if (n < 1 || n >= IFNAMSIZ) 699 return (1); /* sanity check */ 700 if (filter[n-1] >= '0' && filter[n-1] <= '9') 701 return (1); /* only do exact match in that case */ 702 if (strncmp(p->pfik_name, filter, n)) 703 return (1); /* prefix doesn't match */ 704 return (p->pfik_name[n] < '0' || p->pfik_name[n] > '9'); 705 } 706 707 int 708 pfi_set_flags(const char *name, int flags) 709 { 710 struct pfi_kif *p; 711 int s; 712 713 s = splsoftnet(); 714 RB_FOREACH(p, pfi_ifhead, &pfi_ifs) { 715 if (pfi_skip_if(name, p)) 716 continue; 717 p->pfik_flags_new = p->pfik_flags | flags; 718 } 719 splx(s); 720 return (0); 721 } 722 723 int 724 pfi_clear_flags(const char *name, int flags) 725 { 726 struct pfi_kif *p; 727 int s; 728 729 s = splsoftnet(); 730 RB_FOREACH(p, pfi_ifhead, &pfi_ifs) { 731 if (pfi_skip_if(name, p)) 732 continue; 733 p->pfik_flags_new = p->pfik_flags & ~flags; 734 } 735 splx(s); 736 return (0); 737 } 738 739 void 740 pfi_xcommit(void) 741 { 742 struct pfi_kif *p; 743 int s; 744 745 s = splsoftnet(); 746 RB_FOREACH(p, pfi_ifhead, &pfi_ifs) 747 p->pfik_flags = p->pfik_flags_new; 748 splx(s); 749 } 750 751 /* from pf_print_state.c */ 752 int 753 pfi_unmask(void *addr) 754 { 755 struct pf_addr *m = addr; 756 int i = 31, j = 0, b = 0; 757 u_int32_t tmp; 758 759 while (j < 4 && m->addr32[j] == 0xffffffff) { 760 b += 32; 761 j++; 762 } 763 if (j < 4) { 764 tmp = ntohl(m->addr32[j]); 765 for (i = 31; tmp & (1 << i); --i) 766 b++; 767 } 768 return (b); 769 } 770 771