1 /* 2 * Copyright (c) 2004 Luigi Rizzo, Alessandro Cerri. All rights reserved. 3 * Copyright (c) 2004-2008 Qing Li. All rights reserved. 4 * Copyright (c) 2008 Kip Macy. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include "opt_ddb.h" 31 #include "opt_inet.h" 32 #include "opt_inet6.h" 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/malloc.h> 37 #include <sys/mbuf.h> 38 #include <sys/syslog.h> 39 #include <sys/sysctl.h> 40 #include <sys/socket.h> 41 #include <sys/kernel.h> 42 #include <sys/lock.h> 43 #include <sys/mutex.h> 44 #include <sys/rwlock.h> 45 46 #ifdef DDB 47 #include <ddb/ddb.h> 48 #endif 49 50 #include <vm/uma.h> 51 52 #include <netinet/in.h> 53 #include <net/if_llatbl.h> 54 #include <net/if.h> 55 #include <net/if_dl.h> 56 #include <net/if_var.h> 57 #include <net/route.h> 58 #include <net/vnet.h> 59 #include <netinet/if_ether.h> 60 #include <netinet6/in6_var.h> 61 #include <netinet6/nd6.h> 62 63 MALLOC_DEFINE(M_LLTABLE, "lltable", "link level address tables"); 64 65 static VNET_DEFINE(SLIST_HEAD(, lltable), lltables); 66 #define V_lltables VNET(lltables) 67 68 static void vnet_lltable_init(void); 69 70 struct rwlock lltable_rwlock; 71 RW_SYSINIT(lltable_rwlock, &lltable_rwlock, "lltable_rwlock"); 72 73 static void lltable_unlink(struct lltable *llt); 74 static void llentries_unlink(struct lltable *llt, struct llentries *head); 75 76 static void htable_unlink_entry(struct llentry *lle); 77 static void htable_link_entry(struct lltable *llt, struct llentry *lle); 78 static int htable_foreach_lle(struct lltable *llt, llt_foreach_cb_t *f, 79 void *farg); 80 81 /* 82 * Dump lle state for a specific address family. 83 */ 84 static int 85 lltable_dump_af(struct lltable *llt, struct sysctl_req *wr) 86 { 87 int error; 88 89 LLTABLE_LOCK_ASSERT(); 90 91 if (llt->llt_ifp->if_flags & IFF_LOOPBACK) 92 return (0); 93 error = 0; 94 95 IF_AFDATA_RLOCK(llt->llt_ifp); 96 error = lltable_foreach_lle(llt, 97 (llt_foreach_cb_t *)llt->llt_dump_entry, wr); 98 IF_AFDATA_RUNLOCK(llt->llt_ifp); 99 100 return (error); 101 } 102 103 /* 104 * Dump arp state for a specific address family. 105 */ 106 int 107 lltable_sysctl_dumparp(int af, struct sysctl_req *wr) 108 { 109 struct lltable *llt; 110 int error = 0; 111 112 LLTABLE_RLOCK(); 113 SLIST_FOREACH(llt, &V_lltables, llt_link) { 114 if (llt->llt_af == af) { 115 error = lltable_dump_af(llt, wr); 116 if (error != 0) 117 goto done; 118 } 119 } 120 done: 121 LLTABLE_RUNLOCK(); 122 return (error); 123 } 124 125 /* 126 * Common function helpers for chained hash table. 127 */ 128 129 /* 130 * Runs specified callback for each entry in @llt. 131 * Caller does the locking. 132 * 133 */ 134 static int 135 htable_foreach_lle(struct lltable *llt, llt_foreach_cb_t *f, void *farg) 136 { 137 struct llentry *lle, *next; 138 int i, error; 139 140 error = 0; 141 142 for (i = 0; i < llt->llt_hsize; i++) { 143 LIST_FOREACH_SAFE(lle, &llt->lle_head[i], lle_next, next) { 144 error = f(llt, lle, farg); 145 if (error != 0) 146 break; 147 } 148 } 149 150 return (error); 151 } 152 153 static void 154 htable_link_entry(struct lltable *llt, struct llentry *lle) 155 { 156 struct llentries *lleh; 157 uint32_t hashidx; 158 159 if ((lle->la_flags & LLE_LINKED) != 0) 160 return; 161 162 IF_AFDATA_WLOCK_ASSERT(llt->llt_ifp); 163 164 hashidx = llt->llt_hash(lle, llt->llt_hsize); 165 lleh = &llt->lle_head[hashidx]; 166 167 lle->lle_tbl = llt; 168 lle->lle_head = lleh; 169 lle->la_flags |= LLE_LINKED; 170 LIST_INSERT_HEAD(lleh, lle, lle_next); 171 } 172 173 static void 174 htable_unlink_entry(struct llentry *lle) 175 { 176 177 if ((lle->la_flags & LLE_LINKED) != 0) { 178 IF_AFDATA_WLOCK_ASSERT(lle->lle_tbl->llt_ifp); 179 LIST_REMOVE(lle, lle_next); 180 lle->la_flags &= ~(LLE_VALID | LLE_LINKED); 181 #if 0 182 lle->lle_tbl = NULL; 183 lle->lle_head = NULL; 184 #endif 185 } 186 } 187 188 struct prefix_match_data { 189 const struct sockaddr *prefix; 190 const struct sockaddr *mask; 191 struct llentries dchain; 192 u_int flags; 193 }; 194 195 static int 196 htable_prefix_free_cb(struct lltable *llt, struct llentry *lle, void *farg) 197 { 198 struct prefix_match_data *pmd; 199 200 pmd = (struct prefix_match_data *)farg; 201 202 if (llt->llt_match_prefix(pmd->prefix, pmd->mask, pmd->flags, lle)) { 203 LLE_WLOCK(lle); 204 LIST_INSERT_HEAD(&pmd->dchain, lle, lle_chain); 205 } 206 207 return (0); 208 } 209 210 static void 211 htable_prefix_free(struct lltable *llt, const struct sockaddr *prefix, 212 const struct sockaddr *mask, u_int flags) 213 { 214 struct llentry *lle, *next; 215 struct prefix_match_data pmd; 216 217 bzero(&pmd, sizeof(pmd)); 218 pmd.prefix = prefix; 219 pmd.mask = mask; 220 pmd.flags = flags; 221 LIST_INIT(&pmd.dchain); 222 223 IF_AFDATA_WLOCK(llt->llt_ifp); 224 /* Push matching lles to chain */ 225 lltable_foreach_lle(llt, htable_prefix_free_cb, &pmd); 226 227 llentries_unlink(llt, &pmd.dchain); 228 IF_AFDATA_WUNLOCK(llt->llt_ifp); 229 230 LIST_FOREACH_SAFE(lle, &pmd.dchain, lle_chain, next) 231 llt->llt_free_entry(llt, lle); 232 } 233 234 static void 235 htable_free_tbl(struct lltable *llt) 236 { 237 238 free(llt->lle_head, M_LLTABLE); 239 free(llt, M_LLTABLE); 240 } 241 242 static void 243 llentries_unlink(struct lltable *llt, struct llentries *head) 244 { 245 struct llentry *lle, *next; 246 247 LIST_FOREACH_SAFE(lle, head, lle_chain, next) 248 llt->llt_unlink_entry(lle); 249 } 250 251 /* 252 * Helper function used to drop all mbufs in hold queue. 253 * 254 * Returns the number of held packets, if any, that were dropped. 255 */ 256 size_t 257 lltable_drop_entry_queue(struct llentry *lle) 258 { 259 size_t pkts_dropped; 260 struct mbuf *next; 261 262 LLE_WLOCK_ASSERT(lle); 263 264 pkts_dropped = 0; 265 while ((lle->la_numheld > 0) && (lle->la_hold != NULL)) { 266 next = lle->la_hold->m_nextpkt; 267 m_freem(lle->la_hold); 268 lle->la_hold = next; 269 lle->la_numheld--; 270 pkts_dropped++; 271 } 272 273 KASSERT(lle->la_numheld == 0, 274 ("%s: la_numheld %d > 0, pkts_droped %zd", __func__, 275 lle->la_numheld, pkts_dropped)); 276 277 return (pkts_dropped); 278 } 279 280 /* 281 * Deletes an address from the address table. 282 * This function is called by the timer functions 283 * such as arptimer() and nd6_llinfo_timer(), and 284 * the caller does the locking. 285 * 286 * Returns the number of held packets, if any, that were dropped. 287 */ 288 size_t 289 llentry_free(struct llentry *lle) 290 { 291 struct lltable *llt; 292 size_t pkts_dropped; 293 294 LLE_WLOCK_ASSERT(lle); 295 296 if ((lle->la_flags & LLE_LINKED) != 0) { 297 llt = lle->lle_tbl; 298 299 IF_AFDATA_WLOCK_ASSERT(llt->llt_ifp); 300 llt->llt_unlink_entry(lle); 301 } 302 303 pkts_dropped = lltable_drop_entry_queue(lle); 304 305 LLE_FREE_LOCKED(lle); 306 307 return (pkts_dropped); 308 } 309 310 /* 311 * (al)locate an llentry for address dst (equivalent to rtalloc for new-arp). 312 * 313 * If found the llentry * is returned referenced and unlocked. 314 */ 315 struct llentry * 316 llentry_alloc(struct ifnet *ifp, struct lltable *lt, 317 struct sockaddr_storage *dst) 318 { 319 struct llentry *la; 320 321 IF_AFDATA_RLOCK(ifp); 322 la = lla_lookup(lt, LLE_EXCLUSIVE, (struct sockaddr *)dst); 323 IF_AFDATA_RUNLOCK(ifp); 324 if ((la == NULL) && 325 (ifp->if_flags & (IFF_NOARP | IFF_STATICARP)) == 0) { 326 IF_AFDATA_WLOCK(ifp); 327 la = lla_create(lt, 0, (struct sockaddr *)dst); 328 IF_AFDATA_WUNLOCK(ifp); 329 } 330 331 if (la != NULL) { 332 LLE_ADDREF(la); 333 LLE_WUNLOCK(la); 334 } 335 336 return (la); 337 } 338 339 /* 340 * Free all entries from given table and free itself. 341 */ 342 343 static int 344 lltable_free_cb(struct lltable *llt, struct llentry *lle, void *farg) 345 { 346 struct llentries *dchain; 347 348 dchain = (struct llentries *)farg; 349 350 LLE_WLOCK(lle); 351 LIST_INSERT_HEAD(dchain, lle, lle_chain); 352 353 return (0); 354 } 355 356 /* 357 * Free all entries from given table and free itself. 358 */ 359 void 360 lltable_free(struct lltable *llt) 361 { 362 struct llentry *lle, *next; 363 struct llentries dchain; 364 365 KASSERT(llt != NULL, ("%s: llt is NULL", __func__)); 366 367 lltable_unlink(llt); 368 369 LIST_INIT(&dchain); 370 IF_AFDATA_WLOCK(llt->llt_ifp); 371 /* Push all lles to @dchain */ 372 lltable_foreach_lle(llt, lltable_free_cb, &dchain); 373 llentries_unlink(llt, &dchain); 374 IF_AFDATA_WUNLOCK(llt->llt_ifp); 375 376 LIST_FOREACH_SAFE(lle, &dchain, lle_chain, next) { 377 if (callout_stop(&lle->lle_timer)) 378 LLE_REMREF(lle); 379 llentry_free(lle); 380 } 381 382 llt->llt_free_tbl(llt); 383 } 384 385 #if 0 386 void 387 lltable_drain(int af) 388 { 389 struct lltable *llt; 390 struct llentry *lle; 391 register int i; 392 393 LLTABLE_RLOCK(); 394 SLIST_FOREACH(llt, &V_lltables, llt_link) { 395 if (llt->llt_af != af) 396 continue; 397 398 for (i=0; i < llt->llt_hsize; i++) { 399 LIST_FOREACH(lle, &llt->lle_head[i], lle_next) { 400 LLE_WLOCK(lle); 401 if (lle->la_hold) { 402 m_freem(lle->la_hold); 403 lle->la_hold = NULL; 404 } 405 LLE_WUNLOCK(lle); 406 } 407 } 408 } 409 LLTABLE_RUNLOCK(); 410 } 411 #endif 412 413 void 414 lltable_prefix_free(int af, struct sockaddr *prefix, struct sockaddr *mask, 415 u_int flags) 416 { 417 struct lltable *llt; 418 419 LLTABLE_RLOCK(); 420 SLIST_FOREACH(llt, &V_lltables, llt_link) { 421 if (llt->llt_af != af) 422 continue; 423 424 llt->llt_prefix_free(llt, prefix, mask, flags); 425 } 426 LLTABLE_RUNLOCK(); 427 } 428 429 struct lltable * 430 lltable_allocate_htbl(uint32_t hsize) 431 { 432 struct lltable *llt; 433 int i; 434 435 llt = malloc(sizeof(struct lltable), M_LLTABLE, M_WAITOK | M_ZERO); 436 llt->llt_hsize = hsize; 437 llt->lle_head = malloc(sizeof(struct llentries) * hsize, 438 M_LLTABLE, M_WAITOK | M_ZERO); 439 440 for (i = 0; i < llt->llt_hsize; i++) 441 LIST_INIT(&llt->lle_head[i]); 442 443 /* Set some default callbacks */ 444 llt->llt_link_entry = htable_link_entry; 445 llt->llt_unlink_entry = htable_unlink_entry; 446 llt->llt_prefix_free = htable_prefix_free; 447 llt->llt_foreach_entry = htable_foreach_lle; 448 llt->llt_free_tbl = htable_free_tbl; 449 450 return (llt); 451 } 452 453 /* 454 * Links lltable to global llt list. 455 */ 456 void 457 lltable_link(struct lltable *llt) 458 { 459 460 LLTABLE_WLOCK(); 461 SLIST_INSERT_HEAD(&V_lltables, llt, llt_link); 462 LLTABLE_WUNLOCK(); 463 } 464 465 static void 466 lltable_unlink(struct lltable *llt) 467 { 468 469 LLTABLE_WLOCK(); 470 SLIST_REMOVE(&V_lltables, llt, lltable, llt_link); 471 LLTABLE_WUNLOCK(); 472 473 } 474 475 /* 476 * External methods used by lltable consumers 477 */ 478 479 int 480 lltable_foreach_lle(struct lltable *llt, llt_foreach_cb_t *f, void *farg) 481 { 482 483 return (llt->llt_foreach_entry(llt, f, farg)); 484 } 485 486 void 487 lltable_link_entry(struct lltable *llt, struct llentry *lle) 488 { 489 490 llt->llt_link_entry(llt, lle); 491 } 492 493 void 494 lltable_unlink_entry(struct lltable *llt, struct llentry *lle) 495 { 496 497 llt->llt_unlink_entry(lle); 498 } 499 500 void 501 lltable_fill_sa_entry(const struct llentry *lle, struct sockaddr *sa) 502 { 503 struct lltable *llt; 504 505 llt = lle->lle_tbl; 506 llt->llt_fill_sa_entry(lle, sa); 507 } 508 509 struct ifnet * 510 lltable_get_ifp(const struct lltable *llt) 511 { 512 513 return (llt->llt_ifp); 514 } 515 516 int 517 lltable_get_af(const struct lltable *llt) 518 { 519 520 return (llt->llt_af); 521 } 522 523 /* 524 * Called in route_output when rtm_flags contains RTF_LLDATA. 525 */ 526 int 527 lla_rt_output(struct rt_msghdr *rtm, struct rt_addrinfo *info) 528 { 529 struct sockaddr_dl *dl = 530 (struct sockaddr_dl *)info->rti_info[RTAX_GATEWAY]; 531 struct sockaddr *dst = (struct sockaddr *)info->rti_info[RTAX_DST]; 532 struct ifnet *ifp; 533 struct lltable *llt; 534 struct llentry *lle; 535 u_int laflags = 0; 536 int error; 537 538 KASSERT(dl != NULL && dl->sdl_family == AF_LINK, 539 ("%s: invalid dl\n", __func__)); 540 541 ifp = ifnet_byindex(dl->sdl_index); 542 if (ifp == NULL) { 543 log(LOG_INFO, "%s: invalid ifp (sdl_index %d)\n", 544 __func__, dl->sdl_index); 545 return EINVAL; 546 } 547 548 /* XXX linked list may be too expensive */ 549 LLTABLE_RLOCK(); 550 SLIST_FOREACH(llt, &V_lltables, llt_link) { 551 if (llt->llt_af == dst->sa_family && 552 llt->llt_ifp == ifp) 553 break; 554 } 555 LLTABLE_RUNLOCK(); 556 KASSERT(llt != NULL, ("Yep, ugly hacks are bad\n")); 557 558 error = 0; 559 560 switch (rtm->rtm_type) { 561 case RTM_ADD: 562 /* Add static LLE */ 563 IF_AFDATA_WLOCK(ifp); 564 lle = lla_create(llt, 0, dst); 565 if (lle == NULL) { 566 IF_AFDATA_WUNLOCK(ifp); 567 return (ENOMEM); 568 } 569 570 571 bcopy(LLADDR(dl), &lle->ll_addr, ifp->if_addrlen); 572 if ((rtm->rtm_flags & RTF_ANNOUNCE)) 573 lle->la_flags |= LLE_PUB; 574 lle->la_flags |= LLE_VALID; 575 #ifdef INET6 576 /* 577 * ND6 578 */ 579 if (dst->sa_family == AF_INET6) 580 lle->ln_state = ND6_LLINFO_REACHABLE; 581 #endif 582 /* 583 * NB: arp and ndp always set (RTF_STATIC | RTF_HOST) 584 */ 585 586 if (rtm->rtm_rmx.rmx_expire == 0) { 587 lle->la_flags |= LLE_STATIC; 588 lle->la_expire = 0; 589 } else 590 lle->la_expire = rtm->rtm_rmx.rmx_expire; 591 laflags = lle->la_flags; 592 LLE_WUNLOCK(lle); 593 IF_AFDATA_WUNLOCK(ifp); 594 #ifdef INET 595 /* gratuitous ARP */ 596 if ((laflags & LLE_PUB) && dst->sa_family == AF_INET) 597 arprequest(ifp, 598 &((struct sockaddr_in *)dst)->sin_addr, 599 &((struct sockaddr_in *)dst)->sin_addr, 600 (u_char *)LLADDR(dl)); 601 #endif 602 603 break; 604 605 case RTM_DELETE: 606 IF_AFDATA_WLOCK(ifp); 607 error = lla_delete(llt, 0, dst); 608 IF_AFDATA_WUNLOCK(ifp); 609 return (error == 0 ? 0 : ENOENT); 610 611 default: 612 error = EINVAL; 613 } 614 615 return (error); 616 } 617 618 static void 619 vnet_lltable_init() 620 { 621 622 SLIST_INIT(&V_lltables); 623 } 624 VNET_SYSINIT(vnet_lltable_init, SI_SUB_PSEUDO, SI_ORDER_FIRST, 625 vnet_lltable_init, NULL); 626 627 #ifdef DDB 628 struct llentry_sa { 629 struct llentry base; 630 struct sockaddr l3_addr; 631 }; 632 633 static void 634 llatbl_lle_show(struct llentry_sa *la) 635 { 636 struct llentry *lle; 637 uint8_t octet[6]; 638 639 lle = &la->base; 640 db_printf("lle=%p\n", lle); 641 db_printf(" lle_next=%p\n", lle->lle_next.le_next); 642 db_printf(" lle_lock=%p\n", &lle->lle_lock); 643 db_printf(" lle_tbl=%p\n", lle->lle_tbl); 644 db_printf(" lle_head=%p\n", lle->lle_head); 645 db_printf(" la_hold=%p\n", lle->la_hold); 646 db_printf(" la_numheld=%d\n", lle->la_numheld); 647 db_printf(" la_expire=%ju\n", (uintmax_t)lle->la_expire); 648 db_printf(" la_flags=0x%04x\n", lle->la_flags); 649 db_printf(" la_asked=%u\n", lle->la_asked); 650 db_printf(" la_preempt=%u\n", lle->la_preempt); 651 db_printf(" ln_byhint=%u\n", lle->ln_byhint); 652 db_printf(" ln_state=%d\n", lle->ln_state); 653 db_printf(" ln_router=%u\n", lle->ln_router); 654 db_printf(" ln_ntick=%ju\n", (uintmax_t)lle->ln_ntick); 655 db_printf(" lle_refcnt=%d\n", lle->lle_refcnt); 656 bcopy(&lle->ll_addr.mac16, octet, sizeof(octet)); 657 db_printf(" ll_addr=%02x:%02x:%02x:%02x:%02x:%02x\n", 658 octet[0], octet[1], octet[2], octet[3], octet[4], octet[5]); 659 db_printf(" lle_timer=%p\n", &lle->lle_timer); 660 661 switch (la->l3_addr.sa_family) { 662 #ifdef INET 663 case AF_INET: 664 { 665 struct sockaddr_in *sin; 666 char l3s[INET_ADDRSTRLEN]; 667 668 sin = (struct sockaddr_in *)&la->l3_addr; 669 inet_ntoa_r(sin->sin_addr, l3s); 670 db_printf(" l3_addr=%s\n", l3s); 671 break; 672 } 673 #endif 674 #ifdef INET6 675 case AF_INET6: 676 { 677 struct sockaddr_in6 *sin6; 678 char l3s[INET6_ADDRSTRLEN]; 679 680 sin6 = (struct sockaddr_in6 *)&la->l3_addr; 681 ip6_sprintf(l3s, &sin6->sin6_addr); 682 db_printf(" l3_addr=%s\n", l3s); 683 break; 684 } 685 #endif 686 default: 687 db_printf(" l3_addr=N/A (af=%d)\n", la->l3_addr.sa_family); 688 break; 689 } 690 } 691 692 DB_SHOW_COMMAND(llentry, db_show_llentry) 693 { 694 695 if (!have_addr) { 696 db_printf("usage: show llentry <struct llentry *>\n"); 697 return; 698 } 699 700 llatbl_lle_show((struct llentry_sa *)addr); 701 } 702 703 static void 704 llatbl_llt_show(struct lltable *llt) 705 { 706 int i; 707 struct llentry *lle; 708 709 db_printf("llt=%p llt_af=%d llt_ifp=%p\n", 710 llt, llt->llt_af, llt->llt_ifp); 711 712 for (i = 0; i < llt->llt_hsize; i++) { 713 LIST_FOREACH(lle, &llt->lle_head[i], lle_next) { 714 715 llatbl_lle_show((struct llentry_sa *)lle); 716 if (db_pager_quit) 717 return; 718 } 719 } 720 } 721 722 DB_SHOW_COMMAND(lltable, db_show_lltable) 723 { 724 725 if (!have_addr) { 726 db_printf("usage: show lltable <struct lltable *>\n"); 727 return; 728 } 729 730 llatbl_llt_show((struct lltable *)addr); 731 } 732 733 DB_SHOW_ALL_COMMAND(lltables, db_show_all_lltables) 734 { 735 VNET_ITERATOR_DECL(vnet_iter); 736 struct lltable *llt; 737 738 VNET_FOREACH(vnet_iter) { 739 CURVNET_SET_QUIET(vnet_iter); 740 #ifdef VIMAGE 741 db_printf("vnet=%p\n", curvnet); 742 #endif 743 SLIST_FOREACH(llt, &V_lltables, llt_link) { 744 db_printf("llt=%p llt_af=%d llt_ifp=%p(%s)\n", 745 llt, llt->llt_af, llt->llt_ifp, 746 (llt->llt_ifp != NULL) ? 747 llt->llt_ifp->if_xname : "?"); 748 if (have_addr && addr != 0) /* verbose */ 749 llatbl_llt_show(llt); 750 if (db_pager_quit) { 751 CURVNET_RESTORE(); 752 return; 753 } 754 } 755 CURVNET_RESTORE(); 756 } 757 } 758 #endif 759