1 /* $NetBSD: if_llatbl.c,v 1.7 2015/10/20 07:35:15 ozaki-r Exp $ */ 2 /* 3 * Copyright (c) 2004 Luigi Rizzo, Alessandro Cerri. All rights reserved. 4 * Copyright (c) 2004-2008 Qing Li. All rights reserved. 5 * Copyright (c) 2008 Kip Macy. All rights reserved. 6 * Copyright (c) 2015 The NetBSD Foundation, Inc. 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 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 #include <sys/cdefs.h> 31 32 #ifdef _KERNEL_OPT 33 #include "opt_ddb.h" 34 #include "opt_inet.h" 35 #include "opt_inet6.h" 36 #endif 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/malloc.h> 41 #include <sys/mbuf.h> 42 #include <sys/syslog.h> 43 #include <sys/sysctl.h> 44 #include <sys/socket.h> 45 #include <sys/socketvar.h> 46 #include <sys/kernel.h> 47 #include <sys/lock.h> 48 #include <sys/mutex.h> 49 #include <sys/rwlock.h> 50 51 #ifdef DDB 52 #include <ddb/ddb.h> 53 #endif 54 55 #include <netinet/in.h> 56 #include <net/if_llatbl.h> 57 #include <net/if.h> 58 #include <net/if_dl.h> 59 #include <net/route.h> 60 #include <netinet/if_inarp.h> 61 #include <netinet6/in6_var.h> 62 #include <netinet6/nd6.h> 63 64 static SLIST_HEAD(, lltable) lltables; 65 krwlock_t lltable_rwlock; 66 67 static void lltable_unlink(struct lltable *llt); 68 static void llentries_unlink(struct lltable *llt, struct llentries *head); 69 70 static void htable_unlink_entry(struct llentry *lle); 71 static void htable_link_entry(struct lltable *llt, struct llentry *lle); 72 static int htable_foreach_lle(struct lltable *llt, llt_foreach_cb_t *f, 73 void *farg); 74 75 /* 76 * Dump lle state for a specific address family. 77 */ 78 static int 79 lltable_dump_af(struct lltable *llt, struct sysctl_req *wr) 80 { 81 int error; 82 83 LLTABLE_LOCK_ASSERT(); 84 85 if (llt->llt_ifp->if_flags & IFF_LOOPBACK) 86 return (0); 87 error = 0; 88 89 IF_AFDATA_RLOCK(llt->llt_ifp); 90 error = lltable_foreach_lle(llt, 91 (llt_foreach_cb_t *)llt->llt_dump_entry, wr); 92 IF_AFDATA_RUNLOCK(llt->llt_ifp); 93 94 return (error); 95 } 96 97 /* 98 * Dump arp state for a specific address family. 99 */ 100 int 101 lltable_sysctl_dumparp(int af, struct sysctl_req *wr) 102 { 103 struct lltable *llt; 104 int error = 0; 105 106 LLTABLE_RLOCK(); 107 SLIST_FOREACH(llt, &lltables, llt_link) { 108 if (llt->llt_af == af) { 109 error = lltable_dump_af(llt, wr); 110 if (error != 0) 111 goto done; 112 } 113 } 114 done: 115 LLTABLE_RUNLOCK(); 116 return (error); 117 } 118 119 /* 120 * Common function helpers for chained hash table. 121 */ 122 123 /* 124 * Runs specified callback for each entry in @llt. 125 * Caller does the locking. 126 * 127 */ 128 static int 129 htable_foreach_lle(struct lltable *llt, llt_foreach_cb_t *f, void *farg) 130 { 131 struct llentry *lle, *next; 132 int i, error; 133 134 error = 0; 135 136 for (i = 0; i < llt->llt_hsize; i++) { 137 LIST_FOREACH_SAFE(lle, &llt->lle_head[i], lle_next, next) { 138 error = f(llt, lle, farg); 139 if (error != 0) 140 break; 141 } 142 } 143 144 return (error); 145 } 146 147 static void 148 htable_link_entry(struct lltable *llt, struct llentry *lle) 149 { 150 struct llentries *lleh; 151 uint32_t hashidx; 152 153 if ((lle->la_flags & LLE_LINKED) != 0) 154 return; 155 156 IF_AFDATA_WLOCK_ASSERT(llt->llt_ifp); 157 158 hashidx = llt->llt_hash(lle, llt->llt_hsize); 159 lleh = &llt->lle_head[hashidx]; 160 161 lle->lle_tbl = llt; 162 lle->lle_head = lleh; 163 lle->la_flags |= LLE_LINKED; 164 LIST_INSERT_HEAD(lleh, lle, lle_next); 165 } 166 167 static void 168 htable_unlink_entry(struct llentry *lle) 169 { 170 171 if ((lle->la_flags & LLE_LINKED) != 0) { 172 IF_AFDATA_WLOCK_ASSERT(lle->lle_tbl->llt_ifp); 173 LIST_REMOVE(lle, lle_next); 174 lle->la_flags &= ~(LLE_VALID | LLE_LINKED); 175 #if 0 176 lle->lle_tbl = NULL; 177 lle->lle_head = NULL; 178 #endif 179 } 180 } 181 182 struct prefix_match_data { 183 const struct sockaddr *prefix; 184 const struct sockaddr *mask; 185 struct llentries dchain; 186 u_int flags; 187 }; 188 189 static int 190 htable_prefix_free_cb(struct lltable *llt, struct llentry *lle, void *farg) 191 { 192 struct prefix_match_data *pmd; 193 194 pmd = (struct prefix_match_data *)farg; 195 196 if (llt->llt_match_prefix(pmd->prefix, pmd->mask, pmd->flags, lle)) { 197 LLE_WLOCK(lle); 198 LIST_INSERT_HEAD(&pmd->dchain, lle, lle_chain); 199 } 200 201 return (0); 202 } 203 204 static void 205 htable_prefix_free(struct lltable *llt, const struct sockaddr *prefix, 206 const struct sockaddr *mask, u_int flags) 207 { 208 struct llentry *lle, *next; 209 struct prefix_match_data pmd; 210 211 memset(&pmd, 0, sizeof(pmd)); 212 pmd.prefix = prefix; 213 pmd.mask = mask; 214 pmd.flags = flags; 215 LIST_INIT(&pmd.dchain); 216 217 IF_AFDATA_WLOCK(llt->llt_ifp); 218 /* Push matching lles to chain */ 219 lltable_foreach_lle(llt, htable_prefix_free_cb, &pmd); 220 221 llentries_unlink(llt, &pmd.dchain); 222 IF_AFDATA_WUNLOCK(llt->llt_ifp); 223 224 LIST_FOREACH_SAFE(lle, &pmd.dchain, lle_chain, next) 225 llt->llt_free_entry(llt, lle); 226 } 227 228 static void 229 htable_free_tbl(struct lltable *llt) 230 { 231 232 free(llt->lle_head, M_LLTABLE); 233 free(llt, M_LLTABLE); 234 } 235 236 static void 237 llentries_unlink(struct lltable *llt, struct llentries *head) 238 { 239 struct llentry *lle, *next; 240 241 LIST_FOREACH_SAFE(lle, head, lle_chain, next) 242 llt->llt_unlink_entry(lle); 243 } 244 245 /* 246 * Helper function used to drop all mbufs in hold queue. 247 * 248 * Returns the number of held packets, if any, that were dropped. 249 */ 250 size_t 251 lltable_drop_entry_queue(struct llentry *lle) 252 { 253 size_t pkts_dropped; 254 struct mbuf *next; 255 256 LLE_WLOCK_ASSERT(lle); 257 258 pkts_dropped = 0; 259 while ((lle->la_numheld > 0) && (lle->la_hold != NULL)) { 260 next = lle->la_hold->m_nextpkt; 261 m_freem(lle->la_hold); 262 lle->la_hold = next; 263 lle->la_numheld--; 264 pkts_dropped++; 265 } 266 267 KASSERTMSG(lle->la_numheld == 0, 268 "la_numheld %d > 0, pkts_droped %zd", 269 lle->la_numheld, pkts_dropped); 270 271 return (pkts_dropped); 272 } 273 274 /* 275 * Deletes an address from the address table. 276 * This function is called by the timer functions 277 * such as arptimer() and nd6_llinfo_timer(), and 278 * the caller does the locking. 279 * 280 * Returns the number of held packets, if any, that were dropped. 281 */ 282 size_t 283 llentry_free(struct llentry *lle) 284 { 285 struct lltable *llt; 286 size_t pkts_dropped; 287 288 LLE_WLOCK_ASSERT(lle); 289 290 if ((lle->la_flags & LLE_LINKED) != 0) { 291 llt = lle->lle_tbl; 292 293 IF_AFDATA_WLOCK_ASSERT(llt->llt_ifp); 294 llt->llt_unlink_entry(lle); 295 } 296 297 pkts_dropped = lltable_drop_entry_queue(lle); 298 299 LLE_FREE_LOCKED(lle); 300 301 return (pkts_dropped); 302 } 303 304 /* 305 * (al)locate an llentry for address dst (equivalent to rtalloc for new-arp). 306 * 307 * If found the llentry * is returned referenced and unlocked. 308 */ 309 struct llentry * 310 llentry_alloc(struct ifnet *ifp, struct lltable *lt, 311 struct sockaddr_storage *dst) 312 { 313 struct llentry *la; 314 315 IF_AFDATA_RLOCK(ifp); 316 la = lla_lookup(lt, LLE_EXCLUSIVE, (struct sockaddr *)dst); 317 IF_AFDATA_RUNLOCK(ifp); 318 if ((la == NULL) && 319 #ifdef __FreeBSD__ 320 (ifp->if_flags & (IFF_NOARP | IFF_STATICARP)) == 0) { 321 #else /* XXX */ 322 (ifp->if_flags & IFF_NOARP) == 0) { 323 #endif 324 IF_AFDATA_WLOCK(ifp); 325 la = lla_create(lt, 0, (struct sockaddr *)dst); 326 IF_AFDATA_WUNLOCK(ifp); 327 } 328 329 if (la != NULL) { 330 LLE_ADDREF(la); 331 LLE_WUNLOCK(la); 332 } 333 334 return (la); 335 } 336 337 /* 338 * Free all entries from given table and free itself. 339 */ 340 341 static int 342 lltable_free_cb(struct lltable *llt, struct llentry *lle, void *farg) 343 { 344 struct llentries *dchain; 345 346 dchain = (struct llentries *)farg; 347 348 LLE_WLOCK(lle); 349 LIST_INSERT_HEAD(dchain, lle, lle_chain); 350 351 return (0); 352 } 353 354 /* 355 * Free all entries from given table and free itself. 356 */ 357 void 358 lltable_free(struct lltable *llt) 359 { 360 struct llentry *lle, *next; 361 struct llentries dchain; 362 363 KASSERTMSG(llt != NULL, "llt is NULL"); 364 365 lltable_unlink(llt); 366 367 LIST_INIT(&dchain); 368 IF_AFDATA_WLOCK(llt->llt_ifp); 369 /* Push all lles to @dchain */ 370 lltable_foreach_lle(llt, lltable_free_cb, &dchain); 371 llentries_unlink(llt, &dchain); 372 IF_AFDATA_WUNLOCK(llt->llt_ifp); 373 374 LIST_FOREACH_SAFE(lle, &dchain, lle_chain, next) { 375 if (callout_halt(&lle->la_timer, &lle->lle_lock)) 376 LLE_REMREF(lle); 377 #if defined(__NetBSD__) 378 /* XXX should have callback? */ 379 if (lle->la_rt != NULL) { 380 struct rtentry *rt = lle->la_rt; 381 lle->la_rt = NULL; 382 #ifdef GATEWAY 383 /* XXX cannot call rtfree with holding mutex(IPL_NET) */ 384 LLE_ADDREF(lle); 385 LLE_WUNLOCK(lle); 386 #endif 387 rtfree(rt); 388 #ifdef GATEWAY 389 LLE_WLOCK(lle); 390 LLE_REMREF(lle); 391 #endif 392 } 393 #endif 394 llentry_free(lle); 395 } 396 397 llt->llt_free_tbl(llt); 398 } 399 400 void 401 lltable_drain(int af) 402 { 403 struct lltable *llt; 404 struct llentry *lle; 405 register int i; 406 407 LLTABLE_RLOCK(); 408 SLIST_FOREACH(llt, &lltables, llt_link) { 409 if (llt->llt_af != af) 410 continue; 411 412 for (i=0; i < llt->llt_hsize; i++) { 413 LIST_FOREACH(lle, &llt->lle_head[i], lle_next) { 414 LLE_WLOCK(lle); 415 lltable_drop_entry_queue(lle); 416 LLE_WUNLOCK(lle); 417 } 418 } 419 } 420 LLTABLE_RUNLOCK(); 421 } 422 423 void 424 lltable_prefix_free(int af, struct sockaddr *prefix, struct sockaddr *mask, 425 u_int flags) 426 { 427 struct lltable *llt; 428 429 LLTABLE_RLOCK(); 430 SLIST_FOREACH(llt, &lltables, llt_link) { 431 if (llt->llt_af != af) 432 continue; 433 434 llt->llt_prefix_free(llt, prefix, mask, flags); 435 } 436 LLTABLE_RUNLOCK(); 437 } 438 439 struct lltable * 440 lltable_allocate_htbl(uint32_t hsize) 441 { 442 struct lltable *llt; 443 int i; 444 445 llt = malloc(sizeof(struct lltable), M_LLTABLE, M_WAITOK | M_ZERO); 446 llt->llt_hsize = hsize; 447 llt->lle_head = malloc(sizeof(struct llentries) * hsize, 448 M_LLTABLE, M_WAITOK | M_ZERO); 449 450 for (i = 0; i < llt->llt_hsize; i++) 451 LIST_INIT(&llt->lle_head[i]); 452 453 /* Set some default callbacks */ 454 llt->llt_link_entry = htable_link_entry; 455 llt->llt_unlink_entry = htable_unlink_entry; 456 llt->llt_prefix_free = htable_prefix_free; 457 llt->llt_foreach_entry = htable_foreach_lle; 458 459 llt->llt_free_tbl = htable_free_tbl; 460 461 return (llt); 462 } 463 464 /* 465 * Links lltable to global llt list. 466 */ 467 void 468 lltable_link(struct lltable *llt) 469 { 470 471 LLTABLE_WLOCK(); 472 SLIST_INSERT_HEAD(&lltables, llt, llt_link); 473 LLTABLE_WUNLOCK(); 474 } 475 476 static void 477 lltable_unlink(struct lltable *llt) 478 { 479 480 LLTABLE_WLOCK(); 481 SLIST_REMOVE(&lltables, llt, lltable, llt_link); 482 LLTABLE_WUNLOCK(); 483 484 } 485 486 /* 487 * External methods used by lltable consumers 488 */ 489 490 int 491 lltable_foreach_lle(struct lltable *llt, llt_foreach_cb_t *f, void *farg) 492 { 493 494 return (llt->llt_foreach_entry(llt, f, farg)); 495 } 496 497 void 498 lltable_link_entry(struct lltable *llt, struct llentry *lle) 499 { 500 501 llt->llt_link_entry(llt, lle); 502 } 503 504 void 505 lltable_unlink_entry(struct lltable *llt, struct llentry *lle) 506 { 507 508 llt->llt_unlink_entry(lle); 509 } 510 511 void 512 lltable_fill_sa_entry(const struct llentry *lle, struct sockaddr *sa) 513 { 514 struct lltable *llt; 515 516 llt = lle->lle_tbl; 517 llt->llt_fill_sa_entry(lle, sa); 518 } 519 520 struct ifnet * 521 lltable_get_ifp(const struct lltable *llt) 522 { 523 524 return (llt->llt_ifp); 525 } 526 527 int 528 lltable_get_af(const struct lltable *llt) 529 { 530 531 return (llt->llt_af); 532 } 533 534 /* 535 * Called in route_output when rtm_flags contains RTF_LLDATA. 536 */ 537 int 538 lla_rt_output(struct rt_msghdr *rtm, struct rt_addrinfo *info) 539 { 540 const struct sockaddr_dl *dl = satocsdl(info->rti_info[RTAX_GATEWAY]); 541 const struct sockaddr *dst = info->rti_info[RTAX_DST]; 542 struct ifnet *ifp; 543 struct lltable *llt; 544 struct llentry *lle; 545 u_int laflags; 546 int error; 547 548 KASSERTMSG(dl != NULL && dl->sdl_family == AF_LINK, "invalid dl"); 549 550 ifp = if_byindex(dl->sdl_index); 551 if (ifp == NULL) { 552 log(LOG_INFO, "%s: invalid ifp (sdl_index %d)\n", 553 __func__, dl->sdl_index); 554 return EINVAL; 555 } 556 557 /* XXX linked list may be too expensive */ 558 LLTABLE_RLOCK(); 559 SLIST_FOREACH(llt, &lltables, llt_link) { 560 if (llt->llt_af == dst->sa_family && 561 llt->llt_ifp == ifp) 562 break; 563 } 564 LLTABLE_RUNLOCK(); 565 KASSERTMSG(llt != NULL, "Yep, ugly hacks are bad"); 566 567 error = 0; 568 569 switch (rtm->rtm_type) { 570 case RTM_ADD: 571 /* Add static LLE */ 572 IF_AFDATA_WLOCK(ifp); 573 lle = lla_create(llt, 0, dst); 574 if (lle == NULL) { 575 IF_AFDATA_WUNLOCK(ifp); 576 return (ENOMEM); 577 } 578 579 580 memcpy(&lle->ll_addr, CLLADDR(dl), ifp->if_addrlen); 581 if ((rtm->rtm_flags & RTF_ANNOUNCE)) 582 lle->la_flags |= LLE_PUB; 583 lle->la_flags |= LLE_VALID; 584 #ifdef INET6 585 /* 586 * ND6 587 */ 588 if (dst->sa_family == AF_INET6) 589 lle->ln_state = ND6_LLINFO_REACHABLE; 590 #endif 591 /* 592 * NB: arp and ndp always set (RTF_STATIC | RTF_HOST) 593 */ 594 595 if (rtm->rtm_rmx.rmx_expire == 0) { 596 lle->la_flags |= LLE_STATIC; 597 lle->la_expire = 0; 598 } else 599 lle->la_expire = rtm->rtm_rmx.rmx_expire; 600 laflags = lle->la_flags; 601 LLE_WUNLOCK(lle); 602 IF_AFDATA_WUNLOCK(ifp); 603 #ifdef INET 604 /* gratuitous ARP */ 605 if ((laflags & LLE_PUB) && dst->sa_family == AF_INET) 606 arprequest(ifp, 607 &((const struct sockaddr_in *)dst)->sin_addr, 608 &((const struct sockaddr_in *)dst)->sin_addr, 609 CLLADDR(dl)); 610 #endif 611 612 break; 613 614 case RTM_DELETE: 615 IF_AFDATA_WLOCK(ifp); 616 error = lla_delete(llt, 0, dst); 617 IF_AFDATA_WUNLOCK(ifp); 618 return (error == 0 ? 0 : ENOENT); 619 620 default: 621 error = EINVAL; 622 } 623 624 return (error); 625 } 626 627 void 628 lltableinit(void) 629 { 630 631 SLIST_INIT(&lltables); 632 rw_init(&lltable_rwlock); 633 } 634 635 #ifdef __FreeBSD__ 636 #ifdef DDB 637 struct llentry_sa { 638 struct llentry base; 639 struct sockaddr l3_addr; 640 }; 641 642 static void 643 llatbl_lle_show(struct llentry_sa *la) 644 { 645 struct llentry *lle; 646 uint8_t octet[6]; 647 648 lle = &la->base; 649 db_printf("lle=%p\n", lle); 650 db_printf(" lle_next=%p\n", lle->lle_next.le_next); 651 db_printf(" lle_lock=%p\n", &lle->lle_lock); 652 db_printf(" lle_tbl=%p\n", lle->lle_tbl); 653 db_printf(" lle_head=%p\n", lle->lle_head); 654 db_printf(" la_hold=%p\n", lle->la_hold); 655 db_printf(" la_numheld=%d\n", lle->la_numheld); 656 db_printf(" la_expire=%ju\n", (uintmax_t)lle->la_expire); 657 db_printf(" la_flags=0x%04x\n", lle->la_flags); 658 db_printf(" la_asked=%u\n", lle->la_asked); 659 db_printf(" la_preempt=%u\n", lle->la_preempt); 660 db_printf(" ln_byhint=%u\n", lle->ln_byhint); 661 db_printf(" ln_state=%d\n", lle->ln_state); 662 db_printf(" ln_router=%u\n", lle->ln_router); 663 db_printf(" ln_ntick=%ju\n", (uintmax_t)lle->ln_ntick); 664 db_printf(" lle_refcnt=%d\n", lle->lle_refcnt); 665 memcopy(octet, &lle->ll_addr.mac16, sizeof(octet)); 666 db_printf(" ll_addr=%02x:%02x:%02x:%02x:%02x:%02x\n", 667 octet[0], octet[1], octet[2], octet[3], octet[4], octet[5]); 668 db_printf(" lle_timer=%p\n", &lle->lle_timer); 669 670 switch (la->l3_addr.sa_family) { 671 #ifdef INET 672 case AF_INET: 673 { 674 struct sockaddr_in *sin; 675 char l3s[INET_ADDRSTRLEN]; 676 677 sin = (struct sockaddr_in *)&la->l3_addr; 678 inet_ntoa_r(sin->sin_addr, l3s); 679 db_printf(" l3_addr=%s\n", l3s); 680 break; 681 } 682 #endif 683 #ifdef INET6 684 case AF_INET6: 685 { 686 struct sockaddr_in6 *sin6; 687 char l3s[INET6_ADDRSTRLEN]; 688 689 sin6 = (struct sockaddr_in6 *)&la->l3_addr; 690 ip6_sprintf(l3s, &sin6->sin6_addr); 691 db_printf(" l3_addr=%s\n", l3s); 692 break; 693 } 694 #endif 695 default: 696 db_printf(" l3_addr=N/A (af=%d)\n", la->l3_addr.sa_family); 697 break; 698 } 699 } 700 701 DB_SHOW_COMMAND(llentry, db_show_llentry) 702 { 703 704 if (!have_addr) { 705 db_printf("usage: show llentry <struct llentry *>\n"); 706 return; 707 } 708 709 llatbl_lle_show((struct llentry_sa *)addr); 710 } 711 712 static void 713 llatbl_llt_show(struct lltable *llt) 714 { 715 int i; 716 struct llentry *lle; 717 718 db_printf("llt=%p llt_af=%d llt_ifp=%p\n", 719 llt, llt->llt_af, llt->llt_ifp); 720 721 for (i = 0; i < llt->llt_hsize; i++) { 722 LIST_FOREACH(lle, &llt->lle_head[i], lle_next) { 723 724 llatbl_lle_show((struct llentry_sa *)lle); 725 if (db_pager_quit) 726 return; 727 } 728 } 729 } 730 731 DB_SHOW_COMMAND(lltable, db_show_lltable) 732 { 733 734 if (!have_addr) { 735 db_printf("usage: show lltable <struct lltable *>\n"); 736 return; 737 } 738 739 llatbl_llt_show((struct lltable *)addr); 740 } 741 742 DB_SHOW_ALL_COMMAND(lltables, db_show_all_lltables) 743 { 744 VNET_ITERATOR_DECL(vnet_iter); 745 struct lltable *llt; 746 747 VNET_FOREACH(vnet_iter) { 748 CURVNET_SET_QUIET(vnet_iter); 749 #ifdef VIMAGE 750 db_printf("vnet=%p\n", curvnet); 751 #endif 752 SLIST_FOREACH(llt, &lltables, llt_link) { 753 db_printf("llt=%p llt_af=%d llt_ifp=%p(%s)\n", 754 llt, llt->llt_af, llt->llt_ifp, 755 (llt->llt_ifp != NULL) ? 756 llt->llt_ifp->if_xname : "?"); 757 if (have_addr && addr != 0) /* verbose */ 758 llatbl_llt_show(llt); 759 if (db_pager_quit) { 760 CURVNET_RESTORE(); 761 return; 762 } 763 } 764 CURVNET_RESTORE(); 765 } 766 } 767 #endif /* DDB */ 768 #endif /* __FreeBSD__ */ 769