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 lle->r_flags |= RLLE_VALID; 288 } 289 290 /* 291 * 292 * Performes generic cleanup routines and frees lle. 293 * 294 * Called for non-linked entries, with callouts and 295 * other AF-specific cleanups performed. 296 * 297 * @lle must be passed WLOCK'ed 298 * 299 * Returns the number of held packets, if any, that were dropped. 300 */ 301 size_t 302 llentry_free(struct llentry *lle) 303 { 304 size_t pkts_dropped; 305 306 LLE_WLOCK_ASSERT(lle); 307 308 KASSERT((lle->la_flags & LLE_LINKED) == 0, ("freeing linked lle")); 309 310 pkts_dropped = lltable_drop_entry_queue(lle); 311 312 LLE_FREE_LOCKED(lle); 313 314 return (pkts_dropped); 315 } 316 317 /* 318 * (al)locate an llentry for address dst (equivalent to rtalloc for new-arp). 319 * 320 * If found the llentry * is returned referenced and unlocked. 321 */ 322 struct llentry * 323 llentry_alloc(struct ifnet *ifp, struct lltable *lt, 324 struct sockaddr_storage *dst) 325 { 326 struct llentry *la, *la_tmp; 327 328 IF_AFDATA_RLOCK(ifp); 329 la = lla_lookup(lt, LLE_EXCLUSIVE, (struct sockaddr *)dst); 330 IF_AFDATA_RUNLOCK(ifp); 331 332 if (la != NULL) { 333 LLE_ADDREF(la); 334 LLE_WUNLOCK(la); 335 return (la); 336 } 337 338 if ((ifp->if_flags & (IFF_NOARP | IFF_STATICARP)) == 0) { 339 la = lltable_alloc_entry(lt, 0, (struct sockaddr *)dst); 340 if (la == NULL) 341 return (NULL); 342 IF_AFDATA_WLOCK(ifp); 343 LLE_WLOCK(la); 344 /* Prefer any existing LLE over newly-created one */ 345 la_tmp = lla_lookup(lt, LLE_EXCLUSIVE, (struct sockaddr *)dst); 346 if (la_tmp == NULL) 347 lltable_link_entry(lt, la); 348 IF_AFDATA_WUNLOCK(ifp); 349 if (la_tmp != NULL) { 350 lltable_free_entry(lt, la); 351 la = la_tmp; 352 } 353 LLE_ADDREF(la); 354 LLE_WUNLOCK(la); 355 } 356 357 return (la); 358 } 359 360 /* 361 * Free all entries from given table and free itself. 362 */ 363 364 static int 365 lltable_free_cb(struct lltable *llt, struct llentry *lle, void *farg) 366 { 367 struct llentries *dchain; 368 369 dchain = (struct llentries *)farg; 370 371 LLE_WLOCK(lle); 372 LIST_INSERT_HEAD(dchain, lle, lle_chain); 373 374 return (0); 375 } 376 377 /* 378 * Free all entries from given table and free itself. 379 */ 380 void 381 lltable_free(struct lltable *llt) 382 { 383 struct llentry *lle, *next; 384 struct llentries dchain; 385 386 KASSERT(llt != NULL, ("%s: llt is NULL", __func__)); 387 388 lltable_unlink(llt); 389 390 LIST_INIT(&dchain); 391 IF_AFDATA_WLOCK(llt->llt_ifp); 392 /* Push all lles to @dchain */ 393 lltable_foreach_lle(llt, lltable_free_cb, &dchain); 394 llentries_unlink(llt, &dchain); 395 IF_AFDATA_WUNLOCK(llt->llt_ifp); 396 397 LIST_FOREACH_SAFE(lle, &dchain, lle_chain, next) { 398 if (callout_stop(&lle->lle_timer) > 0) 399 LLE_REMREF(lle); 400 llentry_free(lle); 401 } 402 403 llt->llt_free_tbl(llt); 404 } 405 406 #if 0 407 void 408 lltable_drain(int af) 409 { 410 struct lltable *llt; 411 struct llentry *lle; 412 register int i; 413 414 LLTABLE_RLOCK(); 415 SLIST_FOREACH(llt, &V_lltables, llt_link) { 416 if (llt->llt_af != af) 417 continue; 418 419 for (i=0; i < llt->llt_hsize; i++) { 420 LIST_FOREACH(lle, &llt->lle_head[i], lle_next) { 421 LLE_WLOCK(lle); 422 if (lle->la_hold) { 423 m_freem(lle->la_hold); 424 lle->la_hold = NULL; 425 } 426 LLE_WUNLOCK(lle); 427 } 428 } 429 } 430 LLTABLE_RUNLOCK(); 431 } 432 #endif 433 434 /* 435 * Deletes an address from given lltable. 436 * Used for userland interaction to remove 437 * individual entries. Skips entries added by OS. 438 */ 439 int 440 lltable_delete_addr(struct lltable *llt, u_int flags, 441 const struct sockaddr *l3addr) 442 { 443 struct llentry *lle; 444 struct ifnet *ifp; 445 446 ifp = llt->llt_ifp; 447 IF_AFDATA_WLOCK(ifp); 448 lle = lla_lookup(llt, LLE_EXCLUSIVE, l3addr); 449 450 if (lle == NULL) { 451 IF_AFDATA_WUNLOCK(ifp); 452 return (ENOENT); 453 } 454 if ((lle->la_flags & LLE_IFADDR) != 0 && (flags & LLE_IFADDR) == 0) { 455 IF_AFDATA_WUNLOCK(ifp); 456 LLE_WUNLOCK(lle); 457 return (EPERM); 458 } 459 460 lltable_unlink_entry(llt, lle); 461 IF_AFDATA_WUNLOCK(ifp); 462 463 llt->llt_delete_entry(llt, lle); 464 465 return (0); 466 } 467 468 void 469 lltable_prefix_free(int af, struct sockaddr *addr, struct sockaddr *mask, 470 u_int flags) 471 { 472 struct lltable *llt; 473 474 LLTABLE_RLOCK(); 475 SLIST_FOREACH(llt, &V_lltables, llt_link) { 476 if (llt->llt_af != af) 477 continue; 478 479 llt->llt_prefix_free(llt, addr, mask, flags); 480 } 481 LLTABLE_RUNLOCK(); 482 } 483 484 struct lltable * 485 lltable_allocate_htbl(uint32_t hsize) 486 { 487 struct lltable *llt; 488 int i; 489 490 llt = malloc(sizeof(struct lltable), M_LLTABLE, M_WAITOK | M_ZERO); 491 llt->llt_hsize = hsize; 492 llt->lle_head = malloc(sizeof(struct llentries) * hsize, 493 M_LLTABLE, M_WAITOK | M_ZERO); 494 495 for (i = 0; i < llt->llt_hsize; i++) 496 LIST_INIT(&llt->lle_head[i]); 497 498 /* Set some default callbacks */ 499 llt->llt_link_entry = htable_link_entry; 500 llt->llt_unlink_entry = htable_unlink_entry; 501 llt->llt_prefix_free = htable_prefix_free; 502 llt->llt_foreach_entry = htable_foreach_lle; 503 llt->llt_free_tbl = htable_free_tbl; 504 505 return (llt); 506 } 507 508 /* 509 * Links lltable to global llt list. 510 */ 511 void 512 lltable_link(struct lltable *llt) 513 { 514 515 LLTABLE_WLOCK(); 516 SLIST_INSERT_HEAD(&V_lltables, llt, llt_link); 517 LLTABLE_WUNLOCK(); 518 } 519 520 static void 521 lltable_unlink(struct lltable *llt) 522 { 523 524 LLTABLE_WLOCK(); 525 SLIST_REMOVE(&V_lltables, llt, lltable, llt_link); 526 LLTABLE_WUNLOCK(); 527 528 } 529 530 /* 531 * External methods used by lltable consumers 532 */ 533 534 int 535 lltable_foreach_lle(struct lltable *llt, llt_foreach_cb_t *f, void *farg) 536 { 537 538 return (llt->llt_foreach_entry(llt, f, farg)); 539 } 540 541 struct llentry * 542 lltable_alloc_entry(struct lltable *llt, u_int flags, 543 const struct sockaddr *l3addr) 544 { 545 546 return (llt->llt_alloc_entry(llt, flags, l3addr)); 547 } 548 549 void 550 lltable_free_entry(struct lltable *llt, struct llentry *lle) 551 { 552 553 llt->llt_free_entry(llt, lle); 554 } 555 556 void 557 lltable_link_entry(struct lltable *llt, struct llentry *lle) 558 { 559 560 llt->llt_link_entry(llt, lle); 561 } 562 563 void 564 lltable_unlink_entry(struct lltable *llt, struct llentry *lle) 565 { 566 567 llt->llt_unlink_entry(lle); 568 } 569 570 void 571 lltable_fill_sa_entry(const struct llentry *lle, struct sockaddr *sa) 572 { 573 struct lltable *llt; 574 575 llt = lle->lle_tbl; 576 llt->llt_fill_sa_entry(lle, sa); 577 } 578 579 struct ifnet * 580 lltable_get_ifp(const struct lltable *llt) 581 { 582 583 return (llt->llt_ifp); 584 } 585 586 int 587 lltable_get_af(const struct lltable *llt) 588 { 589 590 return (llt->llt_af); 591 } 592 593 /* 594 * Called in route_output when rtm_flags contains RTF_LLDATA. 595 */ 596 int 597 lla_rt_output(struct rt_msghdr *rtm, struct rt_addrinfo *info) 598 { 599 struct sockaddr_dl *dl = 600 (struct sockaddr_dl *)info->rti_info[RTAX_GATEWAY]; 601 struct sockaddr *dst = (struct sockaddr *)info->rti_info[RTAX_DST]; 602 struct ifnet *ifp; 603 struct lltable *llt; 604 struct llentry *lle, *lle_tmp; 605 u_int laflags = 0; 606 int error; 607 608 KASSERT(dl != NULL && dl->sdl_family == AF_LINK, 609 ("%s: invalid dl\n", __func__)); 610 611 ifp = ifnet_byindex(dl->sdl_index); 612 if (ifp == NULL) { 613 log(LOG_INFO, "%s: invalid ifp (sdl_index %d)\n", 614 __func__, dl->sdl_index); 615 return EINVAL; 616 } 617 618 /* XXX linked list may be too expensive */ 619 LLTABLE_RLOCK(); 620 SLIST_FOREACH(llt, &V_lltables, llt_link) { 621 if (llt->llt_af == dst->sa_family && 622 llt->llt_ifp == ifp) 623 break; 624 } 625 LLTABLE_RUNLOCK(); 626 KASSERT(llt != NULL, ("Yep, ugly hacks are bad\n")); 627 628 error = 0; 629 630 switch (rtm->rtm_type) { 631 case RTM_ADD: 632 /* Add static LLE */ 633 laflags = 0; 634 if (rtm->rtm_rmx.rmx_expire == 0) 635 laflags = LLE_STATIC; 636 lle = lltable_alloc_entry(llt, laflags, dst); 637 if (lle == NULL) 638 return (ENOMEM); 639 640 bcopy(LLADDR(dl), &lle->ll_addr, ifp->if_addrlen); 641 if ((rtm->rtm_flags & RTF_ANNOUNCE)) 642 lle->la_flags |= LLE_PUB; 643 lle->la_flags |= LLE_VALID; 644 lle->r_flags |= RLLE_VALID; 645 lle->la_expire = rtm->rtm_rmx.rmx_expire; 646 647 laflags = lle->la_flags; 648 649 /* Try to link new entry */ 650 lle_tmp = NULL; 651 IF_AFDATA_WLOCK(ifp); 652 LLE_WLOCK(lle); 653 lle_tmp = lla_lookup(llt, LLE_EXCLUSIVE, dst); 654 if (lle_tmp != NULL) { 655 /* Check if we are trying to replace immutable entry */ 656 if ((lle_tmp->la_flags & LLE_IFADDR) != 0) { 657 IF_AFDATA_WUNLOCK(ifp); 658 LLE_WUNLOCK(lle_tmp); 659 lltable_free_entry(llt, lle); 660 return (EPERM); 661 } 662 /* Unlink existing entry from table */ 663 lltable_unlink_entry(llt, lle_tmp); 664 } 665 lltable_link_entry(llt, lle); 666 IF_AFDATA_WUNLOCK(ifp); 667 668 if (lle_tmp != NULL) { 669 EVENTHANDLER_INVOKE(lle_event, lle_tmp,LLENTRY_EXPIRED); 670 lltable_free_entry(llt, lle_tmp); 671 } 672 673 /* 674 * By invoking LLE handler here we might get 675 * two events on static LLE entry insertion 676 * in routing socket. However, since we might have 677 * other subscribers we need to generate this event. 678 */ 679 EVENTHANDLER_INVOKE(lle_event, lle, LLENTRY_RESOLVED); 680 LLE_WUNLOCK(lle); 681 #ifdef INET 682 /* gratuitous ARP */ 683 if ((laflags & LLE_PUB) && dst->sa_family == AF_INET) 684 arprequest(ifp, 685 &((struct sockaddr_in *)dst)->sin_addr, 686 &((struct sockaddr_in *)dst)->sin_addr, 687 (u_char *)LLADDR(dl)); 688 #endif 689 690 break; 691 692 case RTM_DELETE: 693 return (lltable_delete_addr(llt, 0, dst)); 694 695 default: 696 error = EINVAL; 697 } 698 699 return (error); 700 } 701 702 static void 703 vnet_lltable_init() 704 { 705 706 SLIST_INIT(&V_lltables); 707 } 708 VNET_SYSINIT(vnet_lltable_init, SI_SUB_PSEUDO, SI_ORDER_FIRST, 709 vnet_lltable_init, NULL); 710 711 #ifdef DDB 712 struct llentry_sa { 713 struct llentry base; 714 struct sockaddr l3_addr; 715 }; 716 717 static void 718 llatbl_lle_show(struct llentry_sa *la) 719 { 720 struct llentry *lle; 721 uint8_t octet[6]; 722 723 lle = &la->base; 724 db_printf("lle=%p\n", lle); 725 db_printf(" lle_next=%p\n", lle->lle_next.le_next); 726 db_printf(" lle_lock=%p\n", &lle->lle_lock); 727 db_printf(" lle_tbl=%p\n", lle->lle_tbl); 728 db_printf(" lle_head=%p\n", lle->lle_head); 729 db_printf(" la_hold=%p\n", lle->la_hold); 730 db_printf(" la_numheld=%d\n", lle->la_numheld); 731 db_printf(" la_expire=%ju\n", (uintmax_t)lle->la_expire); 732 db_printf(" la_flags=0x%04x\n", lle->la_flags); 733 db_printf(" la_asked=%u\n", lle->la_asked); 734 db_printf(" la_preempt=%u\n", lle->la_preempt); 735 db_printf(" ln_state=%d\n", lle->ln_state); 736 db_printf(" ln_router=%u\n", lle->ln_router); 737 db_printf(" ln_ntick=%ju\n", (uintmax_t)lle->ln_ntick); 738 db_printf(" lle_refcnt=%d\n", lle->lle_refcnt); 739 bcopy(&lle->ll_addr.mac16, octet, sizeof(octet)); 740 db_printf(" ll_addr=%02x:%02x:%02x:%02x:%02x:%02x\n", 741 octet[0], octet[1], octet[2], octet[3], octet[4], octet[5]); 742 db_printf(" lle_timer=%p\n", &lle->lle_timer); 743 744 switch (la->l3_addr.sa_family) { 745 #ifdef INET 746 case AF_INET: 747 { 748 struct sockaddr_in *sin; 749 char l3s[INET_ADDRSTRLEN]; 750 751 sin = (struct sockaddr_in *)&la->l3_addr; 752 inet_ntoa_r(sin->sin_addr, l3s); 753 db_printf(" l3_addr=%s\n", l3s); 754 break; 755 } 756 #endif 757 #ifdef INET6 758 case AF_INET6: 759 { 760 struct sockaddr_in6 *sin6; 761 char l3s[INET6_ADDRSTRLEN]; 762 763 sin6 = (struct sockaddr_in6 *)&la->l3_addr; 764 ip6_sprintf(l3s, &sin6->sin6_addr); 765 db_printf(" l3_addr=%s\n", l3s); 766 break; 767 } 768 #endif 769 default: 770 db_printf(" l3_addr=N/A (af=%d)\n", la->l3_addr.sa_family); 771 break; 772 } 773 } 774 775 DB_SHOW_COMMAND(llentry, db_show_llentry) 776 { 777 778 if (!have_addr) { 779 db_printf("usage: show llentry <struct llentry *>\n"); 780 return; 781 } 782 783 llatbl_lle_show((struct llentry_sa *)addr); 784 } 785 786 static void 787 llatbl_llt_show(struct lltable *llt) 788 { 789 int i; 790 struct llentry *lle; 791 792 db_printf("llt=%p llt_af=%d llt_ifp=%p\n", 793 llt, llt->llt_af, llt->llt_ifp); 794 795 for (i = 0; i < llt->llt_hsize; i++) { 796 LIST_FOREACH(lle, &llt->lle_head[i], lle_next) { 797 798 llatbl_lle_show((struct llentry_sa *)lle); 799 if (db_pager_quit) 800 return; 801 } 802 } 803 } 804 805 DB_SHOW_COMMAND(lltable, db_show_lltable) 806 { 807 808 if (!have_addr) { 809 db_printf("usage: show lltable <struct lltable *>\n"); 810 return; 811 } 812 813 llatbl_llt_show((struct lltable *)addr); 814 } 815 816 DB_SHOW_ALL_COMMAND(lltables, db_show_all_lltables) 817 { 818 VNET_ITERATOR_DECL(vnet_iter); 819 struct lltable *llt; 820 821 VNET_FOREACH(vnet_iter) { 822 CURVNET_SET_QUIET(vnet_iter); 823 #ifdef VIMAGE 824 db_printf("vnet=%p\n", curvnet); 825 #endif 826 SLIST_FOREACH(llt, &V_lltables, llt_link) { 827 db_printf("llt=%p llt_af=%d llt_ifp=%p(%s)\n", 828 llt, llt->llt_af, llt->llt_ifp, 829 (llt->llt_ifp != NULL) ? 830 llt->llt_ifp->if_xname : "?"); 831 if (have_addr && addr != 0) /* verbose */ 832 llatbl_llt_show(llt); 833 if (db_pager_quit) { 834 CURVNET_RESTORE(); 835 return; 836 } 837 } 838 CURVNET_RESTORE(); 839 } 840 } 841 #endif 842