2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2004 Luigi Rizzo, Alessandro Cerri. All rights reserved.
5 * Copyright (c) 2004-2008 Qing Li. All rights reserved.
6 * Copyright (c) 2008 Kip Macy. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
34 #include "opt_inet6.h"
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/eventhandler.h>
39 #include <sys/malloc.h>
41 #include <sys/syslog.h>
42 #include <sys/sysctl.h>
43 #include <sys/socket.h>
44 #include <sys/kernel.h>
46 #include <sys/mutex.h>
47 #include <sys/rwlock.h>
55 #include <netinet/in.h>
56 #include <net/if_llatbl.h>
58 #include <net/if_dl.h>
59 #include <net/if_var.h>
60 #include <net/route.h>
61 #include <net/route/route_ctl.h>
62 #include <net/route/route_debug.h>
64 #include <netinet/if_ether.h>
65 #include <netinet6/in6_var.h>
66 #include <netinet6/nd6.h>
68 MALLOC_DEFINE(M_LLTABLE, "lltable", "link level address tables");
70 VNET_DEFINE_STATIC(SLIST_HEAD(, lltable), lltables) =
71 SLIST_HEAD_INITIALIZER(lltables);
72 #define V_lltables VNET(lltables)
74 static struct rwlock lltable_list_lock;
75 RW_SYSINIT(lltable_list_lock, &lltable_list_lock, "lltable_list_lock");
76 #define LLTABLE_LIST_RLOCK() rw_rlock(&lltable_list_lock)
77 #define LLTABLE_LIST_RUNLOCK() rw_runlock(&lltable_list_lock)
78 #define LLTABLE_LIST_WLOCK() rw_wlock(&lltable_list_lock)
79 #define LLTABLE_LIST_WUNLOCK() rw_wunlock(&lltable_list_lock)
80 #define LLTABLE_LIST_LOCK_ASSERT() rw_assert(&lltable_list_lock, RA_LOCKED)
82 static void lltable_unlink(struct lltable *llt);
83 static void llentries_unlink(struct lltable *llt, struct llentries *head);
86 * Dump lle state for a specific address family.
89 lltable_dump_af(struct lltable *llt, struct sysctl_req *wr)
91 struct epoch_tracker et;
94 LLTABLE_LIST_LOCK_ASSERT();
96 if (llt->llt_ifp->if_flags & IFF_LOOPBACK)
101 error = lltable_foreach_lle(llt,
102 (llt_foreach_cb_t *)llt->llt_dump_entry, wr);
109 * Dump arp state for a specific address family.
112 lltable_sysctl_dumparp(int af, struct sysctl_req *wr)
117 LLTABLE_LIST_RLOCK();
118 SLIST_FOREACH(llt, &V_lltables, llt_link) {
119 if (llt->llt_af == af) {
120 error = lltable_dump_af(llt, wr);
126 LLTABLE_LIST_RUNLOCK();
131 * Common function helpers for chained hash table.
135 * Runs specified callback for each entry in @llt.
136 * Caller does the locking.
140 htable_foreach_lle(struct lltable *llt, llt_foreach_cb_t *f, void *farg)
142 struct llentry *lle, *next;
147 for (i = 0; i < llt->llt_hsize; i++) {
148 CK_LIST_FOREACH_SAFE(lle, &llt->lle_head[i], lle_next, next) {
149 error = f(llt, lle, farg);
159 * The htable_[un]link_entry() functions return:
160 * 0 if the entry was (un)linked already and nothing changed,
161 * 1 if the entry was added/removed to/from the table, and
162 * -1 on error (e.g., not being able to add the entry due to limits reached).
163 * While the "unlink" operation should never error, callers of
164 * lltable_link_entry() need to check for errors and handle them.
167 htable_link_entry(struct lltable *llt, struct llentry *lle)
169 struct llentries *lleh;
172 if ((lle->la_flags & LLE_LINKED) != 0)
175 IF_AFDATA_WLOCK_ASSERT(llt->llt_ifp);
177 if (llt->llt_maxentries > 0 &&
178 llt->llt_entries >= llt->llt_maxentries)
181 hashidx = llt->llt_hash(lle, llt->llt_hsize);
182 lleh = &llt->lle_head[hashidx];
185 lle->lle_head = lleh;
186 lle->la_flags |= LLE_LINKED;
187 CK_LIST_INSERT_HEAD(lleh, lle, lle_next);
194 htable_unlink_entry(struct llentry *lle)
198 if ((lle->la_flags & LLE_LINKED) == 0)
202 IF_AFDATA_WLOCK_ASSERT(llt->llt_ifp);
203 KASSERT(llt->llt_entries > 0, ("%s: lltable %p (%s) entries %d <= 0",
204 __func__, llt, if_name(llt->llt_ifp), llt->llt_entries));
206 CK_LIST_REMOVE(lle, lle_next);
207 lle->la_flags &= ~(LLE_VALID | LLE_LINKED);
210 lle->lle_head = NULL;
217 struct prefix_match_data {
218 const struct sockaddr *addr;
219 const struct sockaddr *mask;
220 struct llentries dchain;
225 htable_prefix_free_cb(struct lltable *llt, struct llentry *lle, void *farg)
227 struct prefix_match_data *pmd;
229 pmd = (struct prefix_match_data *)farg;
231 if (llt->llt_match_prefix(pmd->addr, pmd->mask, pmd->flags, lle)) {
233 CK_LIST_INSERT_HEAD(&pmd->dchain, lle, lle_chain);
240 htable_prefix_free(struct lltable *llt, const struct sockaddr *addr,
241 const struct sockaddr *mask, u_int flags)
243 struct llentry *lle, *next;
244 struct prefix_match_data pmd;
246 bzero(&pmd, sizeof(pmd));
250 CK_LIST_INIT(&pmd.dchain);
252 IF_AFDATA_WLOCK(llt->llt_ifp);
253 /* Push matching lles to chain */
254 lltable_foreach_lle(llt, htable_prefix_free_cb, &pmd);
256 llentries_unlink(llt, &pmd.dchain);
257 IF_AFDATA_WUNLOCK(llt->llt_ifp);
259 CK_LIST_FOREACH_SAFE(lle, &pmd.dchain, lle_chain, next)
260 lltable_free_entry(llt, lle);
264 htable_free_tbl(struct lltable *llt)
267 free(llt->lle_head, M_LLTABLE);
268 free(llt, M_LLTABLE);
272 llentries_unlink(struct lltable *llt, struct llentries *head)
274 struct llentry *lle, *next;
276 CK_LIST_FOREACH_SAFE(lle, head, lle_chain, next)
277 llt->llt_unlink_entry(lle);
281 * Helper function used to drop all mbufs in hold queue.
283 * Returns the number of held packets, if any, that were dropped.
286 lltable_drop_entry_queue(struct llentry *lle)
291 LLE_WLOCK_ASSERT(lle);
294 while ((lle->la_numheld > 0) && (lle->la_hold != NULL)) {
295 next = lle->la_hold->m_nextpkt;
296 m_freem(lle->la_hold);
302 KASSERT(lle->la_numheld == 0,
303 ("%s: la_numheld %d > 0, pkts_droped %zd", __func__,
304 lle->la_numheld, pkts_dropped));
306 return (pkts_dropped);
310 lltable_set_entry_addr(struct ifnet *ifp, struct llentry *lle,
311 const char *linkhdr, size_t linkhdrsize, int lladdr_off)
314 memcpy(lle->r_linkdata, linkhdr, linkhdrsize);
315 lle->r_hdrlen = linkhdrsize;
316 lle->ll_addr = &lle->r_linkdata[lladdr_off];
317 lle->la_flags |= LLE_VALID;
318 lle->r_flags |= RLLE_VALID;
322 * Acquires lltable write lock.
324 * Returns true on success, with both lltable and lle lock held.
325 * On failure, false is returned and lle wlock is still held.
328 lltable_acquire_wlock(struct ifnet *ifp, struct llentry *lle)
332 /* Perform real LLE update */
333 /* use afdata WLOCK to update fields */
335 IF_AFDATA_WLOCK(ifp);
339 * Since we droppped LLE lock, other thread might have deleted
340 * this lle. Check and return
342 if ((lle->la_flags & LLE_DELETED) != 0) {
343 IF_AFDATA_WUNLOCK(ifp);
351 * Tries to update @lle link-level address.
352 * Since update requires AFDATA WLOCK, function
353 * drops @lle lock, acquires AFDATA lock and then acquires
354 * @lle lock to maintain lock order.
356 * Returns 1 on success.
359 lltable_try_set_entry_addr(struct ifnet *ifp, struct llentry *lle,
360 const char *linkhdr, size_t linkhdrsize, int lladdr_off)
363 if (!lltable_acquire_wlock(ifp, lle))
367 lltable_set_entry_addr(ifp, lle, linkhdr, linkhdrsize, lladdr_off);
369 IF_AFDATA_WUNLOCK(ifp);
375 * Helper function used to pre-compute full/partial link-layer
376 * header data suitable for feeding into if_output().
379 lltable_calc_llheader(struct ifnet *ifp, int family, char *lladdr,
380 char *buf, size_t *bufsize, int *lladdr_off)
382 struct if_encap_req ereq;
385 bzero(buf, *bufsize);
386 bzero(&ereq, sizeof(ereq));
388 ereq.bufsize = *bufsize;
389 ereq.rtype = IFENCAP_LL;
390 ereq.family = family;
391 ereq.lladdr = lladdr;
392 ereq.lladdr_len = ifp->if_addrlen;
393 error = ifp->if_requestencap(ifp, &ereq);
395 *bufsize = ereq.bufsize;
396 *lladdr_off = ereq.lladdr_off;
403 * Searches for the child entry matching @family inside @lle.
404 * Returns the entry or NULL.
407 llentry_lookup_family(struct llentry *lle, int family)
409 struct llentry *child_lle;
414 CK_SLIST_FOREACH(child_lle, &lle->lle_children, lle_child_next) {
415 if (child_lle->r_family == family)
423 * Retrieves upper protocol family for the llentry.
424 * By default, all "normal" (e.g. upper_family == transport_family)
425 * llentries have r_family set to 0.
426 * Thus, use @default_family in that regard, otherwise use r_family.
428 * Returns upper protocol family
431 llentry_get_upper_family(const struct llentry *lle, int default_family)
433 return (lle->r_family == 0 ? default_family : lle->r_family);
437 * Prints llentry @lle data into provided buffer.
438 * Example: lle/inet/valid/em0/1.2.3.4
443 llentry_print_buf(const struct llentry *lle, struct ifnet *ifp, int family,
444 char *buf, size_t bufsize)
446 char abuf[INET6_ADDRSTRLEN];
448 const char *valid = (lle->r_flags & RLLE_VALID) ? "valid" : "no_l2";
449 const char *upper_str = rib_print_family(llentry_get_upper_family(lle, family));
454 inet_ntop(AF_INET, &lle->r_l3addr.addr4, abuf, sizeof(abuf));
455 snprintf(buf, bufsize, "lle/%s/%s/%s/%s", upper_str,
456 valid, if_name(ifp), abuf);
461 inet_ntop(AF_INET6, &lle->r_l3addr.addr6, abuf, sizeof(abuf));
462 snprintf(buf, bufsize, "lle/%s/%s/%s/%s", upper_str,
463 valid, if_name(ifp), abuf);
467 snprintf(buf, bufsize, "lle/%s/%s/%s/????", upper_str,
468 valid, if_name(ifp));
476 llentry_print_buf_lltable(const struct llentry *lle, char *buf, size_t bufsize)
478 struct lltable *tbl = lle->lle_tbl;
480 return (llentry_print_buf(lle, lltable_get_ifp(tbl), lltable_get_af(tbl), buf, bufsize));
484 * Requests feedback from the datapath.
485 * First packet using @lle should result in
486 * setting r_skip_req back to 0 and updating
487 * lle_hittime to the current time_uptime.
490 llentry_request_feedback(struct llentry *lle)
492 struct llentry *child_lle;
498 CK_SLIST_FOREACH(child_lle, &lle->lle_children, lle_child_next) {
499 LLE_REQ_LOCK(child_lle);
500 child_lle->r_skip_req = 1;
501 LLE_REQ_UNLOCK(child_lle);
506 * Updates the lle state to mark it has been used
507 * and record the time.
508 * Used by the llentry_provide_feedback() wrapper.
511 llentry_mark_used(struct llentry *lle)
515 lle->lle_hittime = time_uptime;
520 * Fetches the time when lle was used.
521 * Return 0 if the entry was not used, relevant time_uptime
525 llentry_get_hittime_raw(struct llentry *lle)
527 time_t lle_hittime = 0;
530 if ((lle->r_skip_req == 0) && (lle_hittime < lle->lle_hittime))
531 lle_hittime = lle->lle_hittime;
534 return (lle_hittime);
538 llentry_get_hittime(struct llentry *lle)
540 time_t lle_hittime = 0;
541 struct llentry *child_lle;
543 lle_hittime = llentry_get_hittime_raw(lle);
545 CK_SLIST_FOREACH(child_lle, &lle->lle_children, lle_child_next) {
546 time_t hittime = llentry_get_hittime_raw(child_lle);
547 if (hittime > lle_hittime)
548 lle_hittime = hittime;
551 return (lle_hittime);
555 * Update link-layer header for given @lle after
556 * interface lladdr was changed.
559 llentry_update_ifaddr(struct lltable *llt, struct llentry *lle, void *farg)
562 u_char linkhdr[LLE_MAX_LINKHDR];
567 ifp = (struct ifnet *)farg;
569 lladdr = lle->ll_addr;
572 if ((lle->la_flags & LLE_VALID) == 0) {
577 if ((lle->la_flags & LLE_IFADDR) != 0)
578 lladdr = IF_LLADDR(ifp);
580 linkhdrsize = sizeof(linkhdr);
581 lltable_calc_llheader(ifp, llt->llt_af, lladdr, linkhdr, &linkhdrsize,
583 memcpy(lle->r_linkdata, linkhdr, linkhdrsize);
590 * Update all calculated headers for given @llt
593 lltable_update_ifaddr(struct lltable *llt)
596 if (llt->llt_ifp->if_flags & IFF_LOOPBACK)
599 IF_AFDATA_WLOCK(llt->llt_ifp);
600 lltable_foreach_lle(llt, llentry_update_ifaddr, llt->llt_ifp);
601 IF_AFDATA_WUNLOCK(llt->llt_ifp);
606 * Performs generic cleanup routines and frees lle.
608 * Called for non-linked entries, with callouts and
609 * other AF-specific cleanups performed.
611 * @lle must be passed WLOCK'ed
613 * Returns the number of held packets, if any, that were dropped.
616 llentry_free(struct llentry *lle)
620 LLE_WLOCK_ASSERT(lle);
622 KASSERT((lle->la_flags & LLE_LINKED) == 0, ("freeing linked lle"));
624 pkts_dropped = lltable_drop_entry_queue(lle);
627 if (callout_stop(&lle->lle_timer) > 0)
629 LLE_FREE_LOCKED(lle);
631 return (pkts_dropped);
635 * Free all entries from given table and free itself.
639 lltable_free_cb(struct lltable *llt, struct llentry *lle, void *farg)
641 struct llentries *dchain;
643 dchain = (struct llentries *)farg;
646 CK_LIST_INSERT_HEAD(dchain, lle, lle_chain);
652 * Free all entries from given table and free itself.
655 lltable_free(struct lltable *llt)
657 struct llentry *lle, *next;
658 struct llentries dchain;
660 KASSERT(llt != NULL, ("%s: llt is NULL", __func__));
664 CK_LIST_INIT(&dchain);
665 IF_AFDATA_WLOCK(llt->llt_ifp);
666 /* Push all lles to @dchain */
667 lltable_foreach_lle(llt, lltable_free_cb, &dchain);
668 llentries_unlink(llt, &dchain);
669 IF_AFDATA_WUNLOCK(llt->llt_ifp);
671 CK_LIST_FOREACH_SAFE(lle, &dchain, lle_chain, next) {
675 KASSERT(llt->llt_entries == 0, ("%s: lltable %p (%s) entires not 0: %d",
676 __func__, llt, llt->llt_ifp->if_xname, llt->llt_entries));
678 llt->llt_free_tbl(llt);
682 * Deletes an address from given lltable.
683 * Used for userland interaction to remove
684 * individual entries. Skips entries added by OS.
687 lltable_delete_addr(struct lltable *llt, u_int flags,
688 const struct sockaddr *l3addr)
694 IF_AFDATA_WLOCK(ifp);
695 lle = lla_lookup(llt, LLE_SF(l3addr->sa_family, LLE_EXCLUSIVE), l3addr);
698 IF_AFDATA_WUNLOCK(ifp);
701 if ((lle->la_flags & LLE_IFADDR) != 0 && (flags & LLE_IFADDR) == 0) {
702 IF_AFDATA_WUNLOCK(ifp);
707 lltable_unlink_entry(llt, lle);
708 IF_AFDATA_WUNLOCK(ifp);
710 llt->llt_delete_entry(llt, lle);
716 lltable_prefix_free(int af, struct sockaddr *addr, struct sockaddr *mask,
721 LLTABLE_LIST_RLOCK();
722 SLIST_FOREACH(llt, &V_lltables, llt_link) {
723 if (llt->llt_af != af)
726 llt->llt_prefix_free(llt, addr, mask, flags);
728 LLTABLE_LIST_RUNLOCK();
732 lltable_allocate_htbl(uint32_t hsize)
737 llt = malloc(sizeof(struct lltable), M_LLTABLE, M_WAITOK | M_ZERO);
738 llt->llt_hsize = hsize;
739 llt->lle_head = malloc(sizeof(struct llentries) * hsize,
740 M_LLTABLE, M_WAITOK | M_ZERO);
742 for (i = 0; i < llt->llt_hsize; i++)
743 CK_LIST_INIT(&llt->lle_head[i]);
745 /* Set some default callbacks */
746 llt->llt_link_entry = htable_link_entry;
747 llt->llt_unlink_entry = htable_unlink_entry;
748 llt->llt_prefix_free = htable_prefix_free;
749 llt->llt_foreach_entry = htable_foreach_lle;
750 llt->llt_free_tbl = htable_free_tbl;
756 * Links lltable to global llt list.
759 lltable_link(struct lltable *llt)
762 LLTABLE_LIST_WLOCK();
763 SLIST_INSERT_HEAD(&V_lltables, llt, llt_link);
764 LLTABLE_LIST_WUNLOCK();
768 lltable_unlink(struct lltable *llt)
771 LLTABLE_LIST_WLOCK();
772 SLIST_REMOVE(&V_lltables, llt, lltable, llt_link);
773 LLTABLE_LIST_WUNLOCK();
778 * Gets interface @ifp lltable for the specified @family
781 lltable_get(struct ifnet *ifp, int family)
785 return (in_lltable_get(ifp));
787 return (in6_lltable_get(ifp));
794 * External methods used by lltable consumers
798 lltable_foreach_lle(struct lltable *llt, llt_foreach_cb_t *f, void *farg)
801 return (llt->llt_foreach_entry(llt, f, farg));
805 lltable_alloc_entry(struct lltable *llt, u_int flags,
806 const struct sockaddr *l3addr)
809 return (llt->llt_alloc_entry(llt, flags, l3addr));
813 lltable_free_entry(struct lltable *llt, struct llentry *lle)
816 llt->llt_free_entry(llt, lle);
820 lltable_link_entry(struct lltable *llt, struct llentry *lle)
823 return (llt->llt_link_entry(llt, lle));
827 lltable_link_child_entry(struct llentry *lle, struct llentry *child_lle)
829 child_lle->lle_parent = lle;
830 child_lle->lle_tbl = lle->lle_tbl;
831 child_lle->la_flags |= LLE_LINKED;
832 CK_SLIST_INSERT_HEAD(&lle->lle_children, child_lle, lle_child_next);
836 lltable_unlink_child_entry(struct llentry *child_lle)
838 struct llentry *lle = child_lle->lle_parent;
840 child_lle->la_flags &= ~LLE_LINKED;
841 child_lle->lle_parent = NULL;
842 CK_SLIST_REMOVE(&lle->lle_children, child_lle, llentry, lle_child_next);
846 lltable_unlink_entry(struct lltable *llt, struct llentry *lle)
849 return (llt->llt_unlink_entry(lle));
853 lltable_fill_sa_entry(const struct llentry *lle, struct sockaddr *sa)
858 llt->llt_fill_sa_entry(lle, sa);
862 lltable_get_ifp(const struct lltable *llt)
865 return (llt->llt_ifp);
869 lltable_get_af(const struct lltable *llt)
872 return (llt->llt_af);
876 * Called in route_output when rtm_flags contains RTF_LLDATA.
879 lla_rt_output(struct rt_msghdr *rtm, struct rt_addrinfo *info)
881 struct sockaddr_dl *dl =
882 (struct sockaddr_dl *)info->rti_info[RTAX_GATEWAY];
883 struct sockaddr *dst = (struct sockaddr *)info->rti_info[RTAX_DST];
886 struct llentry *lle, *lle_tmp;
887 uint8_t linkhdr[LLE_MAX_LINKHDR];
893 if (dl == NULL || dl->sdl_family != AF_LINK)
896 /* XXX: should be ntohs() */
897 ifp = ifnet_byindex(dl->sdl_index);
899 log(LOG_INFO, "%s: invalid ifp (sdl_index %d)\n",
900 __func__, dl->sdl_index);
904 llt = lltable_get(ifp, dst->sa_family);
911 switch (rtm->rtm_type) {
915 if (rtm->rtm_rmx.rmx_expire == 0)
916 laflags = LLE_STATIC;
917 lle = lltable_alloc_entry(llt, laflags, dst);
921 linkhdrsize = sizeof(linkhdr);
922 if (lltable_calc_llheader(ifp, dst->sa_family, LLADDR(dl),
923 linkhdr, &linkhdrsize, &lladdr_off) != 0)
925 lltable_set_entry_addr(ifp, lle, linkhdr, linkhdrsize,
927 if ((rtm->rtm_flags & RTF_ANNOUNCE))
928 lle->la_flags |= LLE_PUB;
929 lle->la_expire = rtm->rtm_rmx.rmx_expire;
931 laflags = lle->la_flags;
933 /* Try to link new entry */
935 IF_AFDATA_WLOCK(ifp);
937 lle_tmp = lla_lookup(llt, LLE_EXCLUSIVE, dst);
938 if (lle_tmp != NULL) {
939 /* Check if we are trying to replace immutable entry */
940 if ((lle_tmp->la_flags & LLE_IFADDR) != 0) {
941 IF_AFDATA_WUNLOCK(ifp);
942 LLE_WUNLOCK(lle_tmp);
943 lltable_free_entry(llt, lle);
946 /* Unlink existing entry from table */
947 lltable_unlink_entry(llt, lle_tmp);
949 lltable_link_entry(llt, lle);
950 IF_AFDATA_WUNLOCK(ifp);
952 if (lle_tmp != NULL) {
953 EVENTHANDLER_INVOKE(lle_event, lle_tmp,LLENTRY_EXPIRED);
954 lltable_free_entry(llt, lle_tmp);
958 * By invoking LLE handler here we might get
959 * two events on static LLE entry insertion
960 * in routing socket. However, since we might have
961 * other subscribers we need to generate this event.
963 EVENTHANDLER_INVOKE(lle_event, lle, LLENTRY_RESOLVED);
967 if ((laflags & LLE_PUB) && dst->sa_family == AF_INET)
969 &((struct sockaddr_in *)dst)->sin_addr,
970 &((struct sockaddr_in *)dst)->sin_addr,
971 (u_char *)LLADDR(dl));
977 return (lltable_delete_addr(llt, 0, dst));
989 struct sockaddr l3_addr;
993 llatbl_lle_show(struct llentry_sa *la)
999 db_printf("lle=%p\n", lle);
1000 db_printf(" lle_next=%p\n", lle->lle_next.cle_next);
1001 db_printf(" lle_lock=%p\n", &lle->lle_lock);
1002 db_printf(" lle_tbl=%p\n", lle->lle_tbl);
1003 db_printf(" lle_head=%p\n", lle->lle_head);
1004 db_printf(" la_hold=%p\n", lle->la_hold);
1005 db_printf(" la_numheld=%d\n", lle->la_numheld);
1006 db_printf(" la_expire=%ju\n", (uintmax_t)lle->la_expire);
1007 db_printf(" la_flags=0x%04x\n", lle->la_flags);
1008 db_printf(" la_asked=%u\n", lle->la_asked);
1009 db_printf(" la_preempt=%u\n", lle->la_preempt);
1010 db_printf(" ln_state=%d\n", lle->ln_state);
1011 db_printf(" ln_router=%u\n", lle->ln_router);
1012 db_printf(" ln_ntick=%ju\n", (uintmax_t)lle->ln_ntick);
1013 db_printf(" lle_refcnt=%d\n", lle->lle_refcnt);
1014 bcopy(lle->ll_addr, octet, sizeof(octet));
1015 db_printf(" ll_addr=%02x:%02x:%02x:%02x:%02x:%02x\n",
1016 octet[0], octet[1], octet[2], octet[3], octet[4], octet[5]);
1017 db_printf(" lle_timer=%p\n", &lle->lle_timer);
1019 switch (la->l3_addr.sa_family) {
1023 struct sockaddr_in *sin;
1024 char l3s[INET_ADDRSTRLEN];
1026 sin = (struct sockaddr_in *)&la->l3_addr;
1027 inet_ntoa_r(sin->sin_addr, l3s);
1028 db_printf(" l3_addr=%s\n", l3s);
1035 struct sockaddr_in6 *sin6;
1036 char l3s[INET6_ADDRSTRLEN];
1038 sin6 = (struct sockaddr_in6 *)&la->l3_addr;
1039 ip6_sprintf(l3s, &sin6->sin6_addr);
1040 db_printf(" l3_addr=%s\n", l3s);
1045 db_printf(" l3_addr=N/A (af=%d)\n", la->l3_addr.sa_family);
1050 DB_SHOW_COMMAND(llentry, db_show_llentry)
1054 db_printf("usage: show llentry <struct llentry *>\n");
1058 llatbl_lle_show((struct llentry_sa *)addr);
1062 llatbl_llt_show(struct lltable *llt)
1065 struct llentry *lle;
1067 db_printf("llt=%p llt_af=%d llt_ifp=%p\n",
1068 llt, llt->llt_af, llt->llt_ifp);
1070 for (i = 0; i < llt->llt_hsize; i++) {
1071 CK_LIST_FOREACH(lle, &llt->lle_head[i], lle_next) {
1072 llatbl_lle_show((struct llentry_sa *)lle);
1079 DB_SHOW_COMMAND(lltable, db_show_lltable)
1083 db_printf("usage: show lltable <struct lltable *>\n");
1087 llatbl_llt_show((struct lltable *)addr);
1090 DB_SHOW_ALL_COMMAND(lltables, db_show_all_lltables)
1092 VNET_ITERATOR_DECL(vnet_iter);
1093 struct lltable *llt;
1095 VNET_FOREACH(vnet_iter) {
1096 CURVNET_SET_QUIET(vnet_iter);
1098 db_printf("vnet=%p\n", curvnet);
1100 SLIST_FOREACH(llt, &V_lltables, llt_link) {
1101 db_printf("llt=%p llt_af=%d llt_ifp=%p(%s)\n",
1102 llt, llt->llt_af, llt->llt_ifp,
1103 (llt->llt_ifp != NULL) ?
1104 llt->llt_ifp->if_xname : "?");
1105 if (have_addr && addr != 0) /* verbose */
1106 llatbl_llt_show(llt);
1107 if (db_pager_quit) {