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