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 *addr; 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->addr, 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 *addr, 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.addr = addr; 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 lltable_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 void 281 lltable_set_entry_addr(struct ifnet *ifp, struct llentry *lle, 282 const char *lladdr) 283 { 284 285 bcopy(lladdr, &lle->ll_addr, ifp->if_addrlen); 286 lle->la_flags |= LLE_VALID; 287 } 288 289 /* 290 * 291 * Performes generic cleanup routines and frees lle. 292 * 293 * Called for non-linked entries, with callouts and 294 * other AF-specific cleanups performed. 295 * 296 * @lle must be passed WLOCK'ed 297 * 298 * Returns the number of held packets, if any, that were dropped. 299 */ 300 size_t 301 llentry_free(struct llentry *lle) 302 { 303 size_t pkts_dropped; 304 305 LLE_WLOCK_ASSERT(lle); 306 307 KASSERT((lle->la_flags & LLE_LINKED) == 0, ("freeing linked lle")); 308 309 pkts_dropped = lltable_drop_entry_queue(lle); 310 311 LLE_FREE_LOCKED(lle); 312 313 return (pkts_dropped); 314 } 315 316 /* 317 * (al)locate an llentry for address dst (equivalent to rtalloc for new-arp). 318 * 319 * If found the llentry * is returned referenced and unlocked. 320 */ 321 struct llentry * 322 llentry_alloc(struct ifnet *ifp, struct lltable *lt, 323 struct sockaddr_storage *dst) 324 { 325 struct llentry *la, *la_tmp; 326 327 IF_AFDATA_RLOCK(ifp); 328 la = lla_lookup(lt, LLE_EXCLUSIVE, (struct sockaddr *)dst); 329 IF_AFDATA_RUNLOCK(ifp); 330 331 if (la != NULL) { 332 LLE_ADDREF(la); 333 LLE_WUNLOCK(la); 334 return (la); 335 } 336 337 if ((ifp->if_flags & (IFF_NOARP | IFF_STATICARP)) == 0) { 338 la = lltable_alloc_entry(lt, 0, (struct sockaddr *)dst); 339 if (la == NULL) 340 return (NULL); 341 IF_AFDATA_WLOCK(ifp); 342 LLE_WLOCK(la); 343 /* Prefer any existing LLE over newly-created one */ 344 la_tmp = lla_lookup(lt, LLE_EXCLUSIVE, (struct sockaddr *)dst); 345 if (la_tmp == NULL) 346 lltable_link_entry(lt, la); 347 IF_AFDATA_WUNLOCK(ifp); 348 if (la_tmp != NULL) { 349 lltable_free_entry(lt, la); 350 la = la_tmp; 351 } 352 LLE_ADDREF(la); 353 LLE_WUNLOCK(la); 354 } 355 356 return (la); 357 } 358 359 /* 360 * Free all entries from given table and free itself. 361 */ 362 363 static int 364 lltable_free_cb(struct lltable *llt, struct llentry *lle, void *farg) 365 { 366 struct llentries *dchain; 367 368 dchain = (struct llentries *)farg; 369 370 LLE_WLOCK(lle); 371 LIST_INSERT_HEAD(dchain, lle, lle_chain); 372 373 return (0); 374 } 375 376 /* 377 * Free all entries from given table and free itself. 378 */ 379 void 380 lltable_free(struct lltable *llt) 381 { 382 struct llentry *lle, *next; 383 struct llentries dchain; 384 385 KASSERT(llt != NULL, ("%s: llt is NULL", __func__)); 386 387 lltable_unlink(llt); 388 389 LIST_INIT(&dchain); 390 IF_AFDATA_WLOCK(llt->llt_ifp); 391 /* Push all lles to @dchain */ 392 lltable_foreach_lle(llt, lltable_free_cb, &dchain); 393 llentries_unlink(llt, &dchain); 394 IF_AFDATA_WUNLOCK(llt->llt_ifp); 395 396 LIST_FOREACH_SAFE(lle, &dchain, lle_chain, next) { 397 if (callout_stop(&lle->lle_timer) > 0) 398 LLE_REMREF(lle); 399 llentry_free(lle); 400 } 401 402 llt->llt_free_tbl(llt); 403 } 404 405 #if 0 406 void 407 lltable_drain(int af) 408 { 409 struct lltable *llt; 410 struct llentry *lle; 411 register int i; 412 413 LLTABLE_RLOCK(); 414 SLIST_FOREACH(llt, &V_lltables, llt_link) { 415 if (llt->llt_af != af) 416 continue; 417 418 for (i=0; i < llt->llt_hsize; i++) { 419 LIST_FOREACH(lle, &llt->lle_head[i], lle_next) { 420 LLE_WLOCK(lle); 421 if (lle->la_hold) { 422 m_freem(lle->la_hold); 423 lle->la_hold = NULL; 424 } 425 LLE_WUNLOCK(lle); 426 } 427 } 428 } 429 LLTABLE_RUNLOCK(); 430 } 431 #endif 432 433 /* 434 * Deletes an address from given lltable. 435 * Used for userland interaction to remove 436 * individual entries. Skips entries added by OS. 437 */ 438 int 439 lltable_delete_addr(struct lltable *llt, u_int flags, 440 const struct sockaddr *l3addr) 441 { 442 struct llentry *lle; 443 struct ifnet *ifp; 444 445 ifp = llt->llt_ifp; 446 IF_AFDATA_WLOCK(ifp); 447 lle = lla_lookup(llt, LLE_EXCLUSIVE, l3addr); 448 449 if (lle == NULL) { 450 IF_AFDATA_WUNLOCK(ifp); 451 return (ENOENT); 452 } 453 if ((lle->la_flags & LLE_IFADDR) != 0 && (flags & LLE_IFADDR) == 0) { 454 IF_AFDATA_WUNLOCK(ifp); 455 LLE_WUNLOCK(lle); 456 return (EPERM); 457 } 458 459 lltable_unlink_entry(llt, lle); 460 IF_AFDATA_WUNLOCK(ifp); 461 462 llt->llt_delete_entry(llt, lle); 463 464 return (0); 465 } 466 467 void 468 lltable_prefix_free(int af, struct sockaddr *addr, struct sockaddr *mask, 469 u_int flags) 470 { 471 struct lltable *llt; 472 473 LLTABLE_RLOCK(); 474 SLIST_FOREACH(llt, &V_lltables, llt_link) { 475 if (llt->llt_af != af) 476 continue; 477 478 llt->llt_prefix_free(llt, addr, mask, flags); 479 } 480 LLTABLE_RUNLOCK(); 481 } 482 483 struct lltable * 484 lltable_allocate_htbl(uint32_t hsize) 485 { 486 struct lltable *llt; 487 int i; 488 489 llt = malloc(sizeof(struct lltable), M_LLTABLE, M_WAITOK | M_ZERO); 490 llt->llt_hsize = hsize; 491 llt->lle_head = malloc(sizeof(struct llentries) * hsize, 492 M_LLTABLE, M_WAITOK | M_ZERO); 493 494 for (i = 0; i < llt->llt_hsize; i++) 495 LIST_INIT(&llt->lle_head[i]); 496 497 /* Set some default callbacks */ 498 llt->llt_link_entry = htable_link_entry; 499 llt->llt_unlink_entry = htable_unlink_entry; 500 llt->llt_prefix_free = htable_prefix_free; 501 llt->llt_foreach_entry = htable_foreach_lle; 502 llt->llt_free_tbl = htable_free_tbl; 503 504 return (llt); 505 } 506 507 /* 508 * Links lltable to global llt list. 509 */ 510 void 511 lltable_link(struct lltable *llt) 512 { 513 514 LLTABLE_WLOCK(); 515 SLIST_INSERT_HEAD(&V_lltables, llt, llt_link); 516 LLTABLE_WUNLOCK(); 517 } 518 519 static void 520 lltable_unlink(struct lltable *llt) 521 { 522 523 LLTABLE_WLOCK(); 524 SLIST_REMOVE(&V_lltables, llt, lltable, llt_link); 525 LLTABLE_WUNLOCK(); 526 527 } 528 529 /* 530 * External methods used by lltable consumers 531 */ 532 533 int 534 lltable_foreach_lle(struct lltable *llt, llt_foreach_cb_t *f, void *farg) 535 { 536 537 return (llt->llt_foreach_entry(llt, f, farg)); 538 } 539 540 struct llentry * 541 lltable_alloc_entry(struct lltable *llt, u_int flags, 542 const struct sockaddr *l3addr) 543 { 544 545 return (llt->llt_alloc_entry(llt, flags, l3addr)); 546 } 547 548 void 549 lltable_free_entry(struct lltable *llt, struct llentry *lle) 550 { 551 552 llt->llt_free_entry(llt, lle); 553 } 554 555 void 556 lltable_link_entry(struct lltable *llt, struct llentry *lle) 557 { 558 559 llt->llt_link_entry(llt, lle); 560 } 561 562 void 563 lltable_unlink_entry(struct lltable *llt, struct llentry *lle) 564 { 565 566 llt->llt_unlink_entry(lle); 567 } 568 569 void 570 lltable_fill_sa_entry(const struct llentry *lle, struct sockaddr *sa) 571 { 572 struct lltable *llt; 573 574 llt = lle->lle_tbl; 575 llt->llt_fill_sa_entry(lle, sa); 576 } 577 578 struct ifnet * 579 lltable_get_ifp(const struct lltable *llt) 580 { 581 582 return (llt->llt_ifp); 583 } 584 585 int 586 lltable_get_af(const struct lltable *llt) 587 { 588 589 return (llt->llt_af); 590 } 591 592 /* 593 * Called in route_output when rtm_flags contains RTF_LLDATA. 594 */ 595 int 596 lla_rt_output(struct rt_msghdr *rtm, struct rt_addrinfo *info) 597 { 598 struct sockaddr_dl *dl = 599 (struct sockaddr_dl *)info->rti_info[RTAX_GATEWAY]; 600 struct sockaddr *dst = (struct sockaddr *)info->rti_info[RTAX_DST]; 601 struct ifnet *ifp; 602 struct lltable *llt; 603 struct llentry *lle, *lle_tmp; 604 u_int laflags = 0; 605 int error; 606 607 KASSERT(dl != NULL && dl->sdl_family == AF_LINK, 608 ("%s: invalid dl\n", __func__)); 609 610 ifp = ifnet_byindex(dl->sdl_index); 611 if (ifp == NULL) { 612 log(LOG_INFO, "%s: invalid ifp (sdl_index %d)\n", 613 __func__, dl->sdl_index); 614 return EINVAL; 615 } 616 617 /* XXX linked list may be too expensive */ 618 LLTABLE_RLOCK(); 619 SLIST_FOREACH(llt, &V_lltables, llt_link) { 620 if (llt->llt_af == dst->sa_family && 621 llt->llt_ifp == ifp) 622 break; 623 } 624 LLTABLE_RUNLOCK(); 625 KASSERT(llt != NULL, ("Yep, ugly hacks are bad\n")); 626 627 error = 0; 628 629 switch (rtm->rtm_type) { 630 case RTM_ADD: 631 /* Add static LLE */ 632 laflags = 0; 633 if (rtm->rtm_rmx.rmx_expire == 0) 634 laflags = LLE_STATIC; 635 lle = lltable_alloc_entry(llt, laflags, dst); 636 if (lle == NULL) 637 return (ENOMEM); 638 639 bcopy(LLADDR(dl), &lle->ll_addr, ifp->if_addrlen); 640 if ((rtm->rtm_flags & RTF_ANNOUNCE)) 641 lle->la_flags |= LLE_PUB; 642 lle->la_flags |= LLE_VALID; 643 lle->la_expire = rtm->rtm_rmx.rmx_expire; 644 645 laflags = lle->la_flags; 646 647 /* Try to link new entry */ 648 lle_tmp = NULL; 649 IF_AFDATA_WLOCK(ifp); 650 LLE_WLOCK(lle); 651 lle_tmp = lla_lookup(llt, LLE_EXCLUSIVE, dst); 652 if (lle_tmp != NULL) { 653 /* Check if we are trying to replace immutable entry */ 654 if ((lle_tmp->la_flags & LLE_IFADDR) != 0) { 655 IF_AFDATA_WUNLOCK(ifp); 656 LLE_WUNLOCK(lle_tmp); 657 lltable_free_entry(llt, lle); 658 return (EPERM); 659 } 660 /* Unlink existing entry from table */ 661 lltable_unlink_entry(llt, lle_tmp); 662 } 663 lltable_link_entry(llt, lle); 664 IF_AFDATA_WUNLOCK(ifp); 665 666 if (lle_tmp != NULL) { 667 EVENTHANDLER_INVOKE(lle_event, lle_tmp,LLENTRY_EXPIRED); 668 lltable_free_entry(llt, lle_tmp); 669 } 670 671 /* 672 * By invoking LLE handler here we might get 673 * two events on static LLE entry insertion 674 * in routing socket. However, since we might have 675 * other subscribers we need to generate this event. 676 */ 677 EVENTHANDLER_INVOKE(lle_event, lle, LLENTRY_RESOLVED); 678 LLE_WUNLOCK(lle); 679 #ifdef INET 680 /* gratuitous ARP */ 681 if ((laflags & LLE_PUB) && dst->sa_family == AF_INET) 682 arprequest(ifp, 683 &((struct sockaddr_in *)dst)->sin_addr, 684 &((struct sockaddr_in *)dst)->sin_addr, 685 (u_char *)LLADDR(dl)); 686 #endif 687 688 break; 689 690 case RTM_DELETE: 691 return (lltable_delete_addr(llt, 0, dst)); 692 693 default: 694 error = EINVAL; 695 } 696 697 return (error); 698 } 699 700 static void 701 vnet_lltable_init() 702 { 703 704 SLIST_INIT(&V_lltables); 705 } 706 VNET_SYSINIT(vnet_lltable_init, SI_SUB_PSEUDO, SI_ORDER_FIRST, 707 vnet_lltable_init, NULL); 708 709 #ifdef DDB 710 struct llentry_sa { 711 struct llentry base; 712 struct sockaddr l3_addr; 713 }; 714 715 static void 716 llatbl_lle_show(struct llentry_sa *la) 717 { 718 struct llentry *lle; 719 uint8_t octet[6]; 720 721 lle = &la->base; 722 db_printf("lle=%p\n", lle); 723 db_printf(" lle_next=%p\n", lle->lle_next.le_next); 724 db_printf(" lle_lock=%p\n", &lle->lle_lock); 725 db_printf(" lle_tbl=%p\n", lle->lle_tbl); 726 db_printf(" lle_head=%p\n", lle->lle_head); 727 db_printf(" la_hold=%p\n", lle->la_hold); 728 db_printf(" la_numheld=%d\n", lle->la_numheld); 729 db_printf(" la_expire=%ju\n", (uintmax_t)lle->la_expire); 730 db_printf(" la_flags=0x%04x\n", lle->la_flags); 731 db_printf(" la_asked=%u\n", lle->la_asked); 732 db_printf(" la_preempt=%u\n", lle->la_preempt); 733 db_printf(" ln_state=%d\n", lle->ln_state); 734 db_printf(" ln_router=%u\n", lle->ln_router); 735 db_printf(" ln_ntick=%ju\n", (uintmax_t)lle->ln_ntick); 736 db_printf(" lle_refcnt=%d\n", lle->lle_refcnt); 737 bcopy(&lle->ll_addr.mac16, octet, sizeof(octet)); 738 db_printf(" ll_addr=%02x:%02x:%02x:%02x:%02x:%02x\n", 739 octet[0], octet[1], octet[2], octet[3], octet[4], octet[5]); 740 db_printf(" lle_timer=%p\n", &lle->lle_timer); 741 742 switch (la->l3_addr.sa_family) { 743 #ifdef INET 744 case AF_INET: 745 { 746 struct sockaddr_in *sin; 747 char l3s[INET_ADDRSTRLEN]; 748 749 sin = (struct sockaddr_in *)&la->l3_addr; 750 inet_ntoa_r(sin->sin_addr, l3s); 751 db_printf(" l3_addr=%s\n", l3s); 752 break; 753 } 754 #endif 755 #ifdef INET6 756 case AF_INET6: 757 { 758 struct sockaddr_in6 *sin6; 759 char l3s[INET6_ADDRSTRLEN]; 760 761 sin6 = (struct sockaddr_in6 *)&la->l3_addr; 762 ip6_sprintf(l3s, &sin6->sin6_addr); 763 db_printf(" l3_addr=%s\n", l3s); 764 break; 765 } 766 #endif 767 default: 768 db_printf(" l3_addr=N/A (af=%d)\n", la->l3_addr.sa_family); 769 break; 770 } 771 } 772 773 DB_SHOW_COMMAND(llentry, db_show_llentry) 774 { 775 776 if (!have_addr) { 777 db_printf("usage: show llentry <struct llentry *>\n"); 778 return; 779 } 780 781 llatbl_lle_show((struct llentry_sa *)addr); 782 } 783 784 static void 785 llatbl_llt_show(struct lltable *llt) 786 { 787 int i; 788 struct llentry *lle; 789 790 db_printf("llt=%p llt_af=%d llt_ifp=%p\n", 791 llt, llt->llt_af, llt->llt_ifp); 792 793 for (i = 0; i < llt->llt_hsize; i++) { 794 LIST_FOREACH(lle, &llt->lle_head[i], lle_next) { 795 796 llatbl_lle_show((struct llentry_sa *)lle); 797 if (db_pager_quit) 798 return; 799 } 800 } 801 } 802 803 DB_SHOW_COMMAND(lltable, db_show_lltable) 804 { 805 806 if (!have_addr) { 807 db_printf("usage: show lltable <struct lltable *>\n"); 808 return; 809 } 810 811 llatbl_llt_show((struct lltable *)addr); 812 } 813 814 DB_SHOW_ALL_COMMAND(lltables, db_show_all_lltables) 815 { 816 VNET_ITERATOR_DECL(vnet_iter); 817 struct lltable *llt; 818 819 VNET_FOREACH(vnet_iter) { 820 CURVNET_SET_QUIET(vnet_iter); 821 #ifdef VIMAGE 822 db_printf("vnet=%p\n", curvnet); 823 #endif 824 SLIST_FOREACH(llt, &V_lltables, llt_link) { 825 db_printf("llt=%p llt_af=%d llt_ifp=%p(%s)\n", 826 llt, llt->llt_af, llt->llt_ifp, 827 (llt->llt_ifp != NULL) ? 828 llt->llt_ifp->if_xname : "?"); 829 if (have_addr && addr != 0) /* verbose */ 830 llatbl_llt_show(llt); 831 if (db_pager_quit) { 832 CURVNET_RESTORE(); 833 return; 834 } 835 } 836 CURVNET_RESTORE(); 837 } 838 } 839 #endif 840