1 /* $NetBSD: ieee8023ad_lacp.c,v 1.3 2005/12/11 12:24:54 christos Exp $ */
4 * Copyright (c)2005 YAMAMOTO Takashi,
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/callout.h>
35 #include <sys/systm.h>
36 #include <sys/malloc.h>
37 #include <sys/kernel.h> /* hz */
38 #include <sys/socket.h> /* for net/if.h */
39 #include <sys/sockio.h>
40 #include <machine/stdarg.h>
43 #include <net/if_dl.h>
44 #include <net/ethernet.h>
45 #include <net/if_media.h>
46 #include <net/if_types.h>
48 #include <net/if_lagg.h>
49 #include <net/ieee8023ad_lacp.h>
52 * actor system priority and port priority.
53 * XXX should be configurable.
56 #define LACP_SYSTEM_PRIO 0x8000
57 #define LACP_PORT_PRIO 0x8000
59 const uint8_t ethermulticastaddr_slowprotocols[ETHER_ADDR_LEN] =
60 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x02 };
62 static const struct tlv_template lacp_info_tlv_template[] = {
63 { LACP_TYPE_ACTORINFO,
64 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) },
65 { LACP_TYPE_PARTNERINFO,
66 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) },
67 { LACP_TYPE_COLLECTORINFO,
68 sizeof(struct tlvhdr) + sizeof(struct lacp_collectorinfo) },
72 typedef void (*lacp_timer_func_t)(struct lacp_port *);
74 static const struct tlv_template marker_info_tlv_template[] = {
75 { MARKER_TYPE_INFO, 16 },
79 static const struct tlv_template marker_response_tlv_template[] = {
80 { MARKER_TYPE_RESPONSE, 16 },
84 static void lacp_fill_actorinfo(struct lacp_port *, struct lacp_peerinfo *);
86 static uint64_t lacp_aggregator_bandwidth(struct lacp_aggregator *);
87 static void lacp_suppress_distributing(struct lacp_softc *,
88 struct lacp_aggregator *);
89 static void lacp_transit_expire(void *);
90 static void lacp_select_active_aggregator(struct lacp_softc *);
91 static uint16_t lacp_compose_key(struct lacp_port *);
92 static int tlv_check(const void *, size_t, const struct tlvhdr *,
93 const struct tlv_template *, boolean_t);
94 static void lacp_tick(void *);
96 static void lacp_fill_aggregator_id(struct lacp_aggregator *,
97 const struct lacp_port *);
98 static void lacp_fill_aggregator_id_peer(struct lacp_peerinfo *,
99 const struct lacp_peerinfo *);
100 static int lacp_aggregator_is_compatible(const struct lacp_aggregator *,
101 const struct lacp_port *);
102 static int lacp_peerinfo_is_compatible(const struct lacp_peerinfo *,
103 const struct lacp_peerinfo *);
105 static struct lacp_aggregator *lacp_aggregator_get(struct lacp_softc *,
107 static void lacp_aggregator_addref(struct lacp_softc *,
108 struct lacp_aggregator *);
109 static void lacp_aggregator_delref(struct lacp_softc *,
110 struct lacp_aggregator *);
112 /* receive machine */
114 static void lacp_sm_rx(struct lacp_port *, const struct lacpdu *);
115 static void lacp_sm_rx_timer(struct lacp_port *);
116 static void lacp_sm_rx_set_expired(struct lacp_port *);
117 static void lacp_sm_rx_update_ntt(struct lacp_port *,
118 const struct lacpdu *);
119 static void lacp_sm_rx_record_pdu(struct lacp_port *,
120 const struct lacpdu *);
121 static void lacp_sm_rx_update_selected(struct lacp_port *,
122 const struct lacpdu *);
123 static void lacp_sm_rx_record_default(struct lacp_port *);
124 static void lacp_sm_rx_update_default_selected(struct lacp_port *);
125 static void lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *,
126 const struct lacp_peerinfo *);
130 static void lacp_sm_mux(struct lacp_port *);
131 static void lacp_set_mux(struct lacp_port *, enum lacp_mux_state);
132 static void lacp_sm_mux_timer(struct lacp_port *);
134 /* periodic transmit machine */
136 static void lacp_sm_ptx_update_timeout(struct lacp_port *, uint8_t);
137 static void lacp_sm_ptx_tx_schedule(struct lacp_port *);
138 static void lacp_sm_ptx_timer(struct lacp_port *);
140 /* transmit machine */
142 static void lacp_sm_tx(struct lacp_port *);
143 static void lacp_sm_assert_ntt(struct lacp_port *);
145 static void lacp_run_timers(struct lacp_port *);
146 static int lacp_compare_peerinfo(const struct lacp_peerinfo *,
147 const struct lacp_peerinfo *);
148 static int lacp_compare_systemid(const struct lacp_systemid *,
149 const struct lacp_systemid *);
150 static void lacp_port_enable(struct lacp_port *);
151 static void lacp_port_disable(struct lacp_port *);
152 static void lacp_select(struct lacp_port *);
153 static void lacp_unselect(struct lacp_port *);
154 static void lacp_disable_collecting(struct lacp_port *);
155 static void lacp_enable_collecting(struct lacp_port *);
156 static void lacp_disable_distributing(struct lacp_port *);
157 static void lacp_enable_distributing(struct lacp_port *);
158 static int lacp_xmit_lacpdu(struct lacp_port *);
160 #if defined(LACP_DEBUG)
161 static void lacp_dump_lacpdu(const struct lacpdu *);
162 static const char *lacp_format_partner(const struct lacp_peerinfo *, char *,
164 static const char *lacp_format_lagid(const struct lacp_peerinfo *,
165 const struct lacp_peerinfo *, char *, size_t);
166 static const char *lacp_format_lagid_aggregator(const struct lacp_aggregator *,
168 static const char *lacp_format_state(uint8_t, char *, size_t);
169 static const char *lacp_format_mac(const uint8_t *, char *, size_t);
170 static const char *lacp_format_systemid(const struct lacp_systemid *, char *,
172 static const char *lacp_format_portid(const struct lacp_portid *, char *,
174 static void lacp_dprintf(const struct lacp_port *, const char *, ...)
175 __attribute__((__format__(__printf__, 2, 3)));
176 #define LACP_DPRINTF(a) lacp_dprintf a
178 #define LACP_DPRINTF(a) /* nothing */
182 * partner administration variables.
183 * XXX should be configurable.
186 static const struct lacp_peerinfo lacp_partner_admin = {
187 .lip_systemid = { .lsi_prio = 0xffff },
188 .lip_portid = { .lpi_prio = 0xffff },
191 .lip_state = LACP_STATE_SYNC | LACP_STATE_AGGREGATION |
192 LACP_STATE_COLLECTING | LACP_STATE_DISTRIBUTING,
199 static const lacp_timer_func_t lacp_timer_funcs[LACP_NTIMER] = {
200 [LACP_TIMER_CURRENT_WHILE] = lacp_sm_rx_timer,
201 [LACP_TIMER_PERIODIC] = lacp_sm_ptx_timer,
202 [LACP_TIMER_WAIT_WHILE] = lacp_sm_mux_timer,
206 * lacp_input: process lacpdu
209 lacp_input(struct lagg_port *lgp, struct mbuf *m)
211 struct lacp_port *lp = LACP_PORT(lgp);
215 LAGG_LOCK_ASSERT(lgp->lp_lagg);
217 if (__predict_false(lp->lp_flags & LACP_PORT_DETACHING)) {
221 if (m->m_pkthdr.len != sizeof(*du)) {
225 if ((m->m_flags & M_MCAST) == 0) {
229 if (m->m_len < sizeof(*du)) {
230 m = m_pullup(m, sizeof(*du));
236 du = mtod(m, struct lacpdu *);
238 if (memcmp(&du->ldu_eh.ether_dhost,
239 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) {
244 KASSERT(du->ldu_sph.sph_subtype == SLOWPROTOCOLS_SUBTYPE_LACP,
245 ("a very bad kassert!"));
249 * ignore the version for compatibility with
250 * the future protocol revisions.
254 if (du->ldu_sph.sph_version != 1) {
260 * ignore tlv types for compatibility with
261 * the future protocol revisions.
264 if (tlv_check(du, sizeof(*du), &du->ldu_tlv_actor,
265 lacp_info_tlv_template, FALSE)) {
269 #if defined(LACP_DEBUG)
270 LACP_DPRINTF((lp, "lacpdu receive\n"));
271 lacp_dump_lacpdu(du);
272 #endif /* defined(LACP_DEBUG) */
285 lacp_fill_actorinfo(struct lacp_port *lp, struct lacp_peerinfo *info)
287 struct lagg_port *lgp = lp->lp_lagg;
288 struct lagg_softc *lgs = lgp->lp_lagg;
290 info->lip_systemid.lsi_prio = htons(LACP_SYSTEM_PRIO);
291 memcpy(&info->lip_systemid.lsi_mac,
292 IF_LLADDR(lgs->sc_ifp), ETHER_ADDR_LEN);
293 info->lip_portid.lpi_prio = htons(LACP_PORT_PRIO);
294 info->lip_portid.lpi_portno = htons(lp->lp_ifp->if_index);
295 info->lip_state = lp->lp_state;
299 lacp_xmit_lacpdu(struct lacp_port *lp)
301 struct lagg_port *lgp = lp->lp_lagg;
306 LAGG_LOCK_ASSERT(lgp->lp_lagg);
308 m = m_gethdr(M_DONTWAIT, MT_DATA);
312 m->m_len = m->m_pkthdr.len = sizeof(*du);
314 du = mtod(m, struct lacpdu *);
315 memset(du, 0, sizeof(*du));
317 memcpy(&du->ldu_eh.ether_dhost, ethermulticastaddr_slowprotocols,
319 memcpy(&du->ldu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN);
320 du->ldu_eh.ether_type = htons(ETHERTYPE_SLOW);
322 du->ldu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_LACP;
323 du->ldu_sph.sph_version = 1;
325 TLV_SET(&du->ldu_tlv_actor, LACP_TYPE_ACTORINFO, sizeof(du->ldu_actor));
326 du->ldu_actor = lp->lp_actor;
328 TLV_SET(&du->ldu_tlv_partner, LACP_TYPE_PARTNERINFO,
329 sizeof(du->ldu_partner));
330 du->ldu_partner = lp->lp_partner;
332 TLV_SET(&du->ldu_tlv_collector, LACP_TYPE_COLLECTORINFO,
333 sizeof(du->ldu_collector));
334 du->ldu_collector.lci_maxdelay = 0;
336 #if defined(LACP_DEBUG)
337 LACP_DPRINTF((lp, "lacpdu transmit\n"));
338 lacp_dump_lacpdu(du);
339 #endif /* defined(LACP_DEBUG) */
341 m->m_flags |= M_MCAST;
344 * XXX should use higher priority queue.
345 * otherwise network congestion can break aggregation.
348 error = lagg_enqueue(lp->lp_ifp, m);
353 lacp_linkstate(struct lagg_port *lgp)
355 struct lacp_port *lp = LACP_PORT(lgp);
356 struct ifnet *ifp = lgp->lp_ifp;
357 struct ifmediareq ifmr;
363 LAGG_LOCK_ASSERT(lgp->lp_lagg);
365 bzero((char *)&ifmr, sizeof(ifmr));
366 error = (*ifp->if_ioctl)(ifp, SIOCGIFMEDIA, (caddr_t)&ifmr);
370 media = ifmr.ifm_active;
371 LACP_DPRINTF((lp, "media changed 0x%x -> 0x%x\n", lp->lp_media, media));
372 old_state = lp->lp_state;
373 old_key = lp->lp_key;
375 lp->lp_media = media;
376 if ((media & IFM_HDX) != 0 || ifp->if_link_state == LINK_STATE_DOWN) {
377 lacp_port_disable(lp);
379 lacp_port_enable(lp);
381 lp->lp_key = lacp_compose_key(lp);
383 if (old_state != lp->lp_state || old_key != lp->lp_key) {
384 LACP_DPRINTF((lp, "-> UNSELECTED\n"));
385 lp->lp_selected = LACP_UNSELECTED;
392 struct lacp_softc *lsc = arg;
393 struct lacp_port *lp;
395 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) {
396 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0)
404 lacp_sm_ptx_tx_schedule(lp);
406 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc);
410 lacp_port_create(struct lagg_port *lgp)
412 struct lagg_softc *lgs = lgp->lp_lagg;
413 struct lacp_softc *lsc = LACP_SOFTC(lgs);
414 struct lacp_port *lp;
415 struct ifnet *ifp = lgp->lp_ifp;
416 struct sockaddr_dl sdl;
417 struct ifmultiaddr *rifma = NULL;
420 boolean_t active = TRUE; /* XXX should be configurable */
421 boolean_t fast = FALSE; /* XXX should be configurable */
423 LAGG_LOCK_ASSERT(lgs);
425 bzero((char *)&sdl, sizeof(sdl));
426 sdl.sdl_len = sizeof(sdl);
427 sdl.sdl_family = AF_LINK;
428 sdl.sdl_index = ifp->if_index;
429 sdl.sdl_type = IFT_ETHER;
430 sdl.sdl_alen = ETHER_ADDR_LEN;
432 bcopy(ðermulticastaddr_slowprotocols,
433 LLADDR(&sdl), ETHER_ADDR_LEN);
434 error = if_addmulti(ifp, (struct sockaddr *)&sdl, &rifma);
436 printf("%s: ADDMULTI failed on %s\n", __func__, lgp->lp_ifname);
440 lp = malloc(sizeof(struct lacp_port),
441 M_DEVBUF, M_NOWAIT|M_ZERO);
445 lgp->lp_psc = (caddr_t)lp;
450 LIST_INSERT_HEAD(&lsc->lsc_ports, lp, lp_next);
452 lacp_fill_actorinfo(lp, &lp->lp_actor);
454 (active ? LACP_STATE_ACTIVITY : 0) |
455 (fast ? LACP_STATE_TIMEOUT : 0);
456 lp->lp_aggregator = NULL;
458 lacp_sm_rx_set_expired(lp);
464 lacp_port_destroy(struct lagg_port *lgp)
466 struct lacp_port *lp = LACP_PORT(lgp);
467 struct ifnet *ifp = lgp->lp_ifp;
468 struct sockaddr_dl sdl;
471 LAGG_LOCK_ASSERT(lgp->lp_lagg);
473 for (i = 0; i < LACP_NTIMER; i++) {
474 LACP_TIMER_DISARM(lp, i);
477 lacp_disable_collecting(lp);
478 lacp_disable_distributing(lp);
481 bzero((char *)&sdl, sizeof(sdl));
482 sdl.sdl_len = sizeof(sdl);
483 sdl.sdl_family = AF_LINK;
484 sdl.sdl_index = ifp->if_index;
485 sdl.sdl_type = IFT_ETHER;
486 sdl.sdl_alen = ETHER_ADDR_LEN;
488 bcopy(ðermulticastaddr_slowprotocols,
489 LLADDR(&sdl), ETHER_ADDR_LEN);
490 error = if_delmulti(ifp, (struct sockaddr *)&sdl);
492 printf("%s: DELMULTI failed on %s\n", __func__, lgp->lp_ifname);
494 LIST_REMOVE(lp, lp_next);
499 lacp_port_isactive(struct lagg_port *lgp)
501 struct lacp_port *lp = LACP_PORT(lgp);
502 struct lacp_softc *lsc = lp->lp_lsc;
503 struct lacp_aggregator *la = lp->lp_aggregator;
505 /* This port is joined to the active aggregator */
506 if (la != NULL && la == lsc->lsc_active_aggregator)
513 lacp_disable_collecting(struct lacp_port *lp)
515 struct lagg_port *lgp = lp->lp_lagg;
517 LACP_DPRINTF((lp, "collecting disabled\n"));
519 lp->lp_state &= ~LACP_STATE_COLLECTING;
520 lgp->lp_flags &= ~LAGG_PORT_COLLECTING;
524 lacp_enable_collecting(struct lacp_port *lp)
526 struct lagg_port *lgp = lp->lp_lagg;
528 LACP_DPRINTF((lp, "collecting enabled\n"));
530 lp->lp_state |= LACP_STATE_COLLECTING;
531 lgp->lp_flags |= LAGG_PORT_COLLECTING;
535 lacp_disable_distributing(struct lacp_port *lp)
537 struct lacp_aggregator *la = lp->lp_aggregator;
538 struct lacp_softc *lsc = lp->lp_lsc;
539 struct lagg_port *lgp = lp->lp_lagg;
540 #if defined(LACP_DEBUG)
541 char buf[LACP_LAGIDSTR_MAX+1];
542 #endif /* defined(LACP_DEBUG) */
544 LAGG_LOCK_ASSERT(lgp->lp_lagg);
546 if (la == NULL || (lp->lp_state & LACP_STATE_DISTRIBUTING) == 0) {
550 KASSERT(!TAILQ_EMPTY(&la->la_ports), ("no aggregator ports"));
551 KASSERT(la->la_nports > 0, ("nports invalid (%d)", la->la_nports));
552 KASSERT(la->la_refcnt >= la->la_nports, ("aggregator refcnt invalid"));
554 LACP_DPRINTF((lp, "disable distributing on aggregator %s, "
556 lacp_format_lagid_aggregator(la, buf, sizeof(buf)),
557 la->la_nports, la->la_nports - 1));
559 TAILQ_REMOVE(&la->la_ports, lp, lp_dist_q);
562 lacp_suppress_distributing(lsc, la);
564 lp->lp_state &= ~LACP_STATE_DISTRIBUTING;
565 lgp->lp_flags &= ~LAGG_PORT_DISTRIBUTING;
567 if (lsc->lsc_active_aggregator == la) {
568 lacp_select_active_aggregator(lsc);
573 lacp_enable_distributing(struct lacp_port *lp)
575 struct lacp_aggregator *la = lp->lp_aggregator;
576 struct lacp_softc *lsc = lp->lp_lsc;
577 struct lagg_port *lgp = lp->lp_lagg;
578 #if defined(LACP_DEBUG)
579 char buf[LACP_LAGIDSTR_MAX+1];
580 #endif /* defined(LACP_DEBUG) */
582 LAGG_LOCK_ASSERT(lgp->lp_lagg);
584 if ((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0) {
588 LACP_DPRINTF((lp, "enable distributing on aggregator %s, "
590 lacp_format_lagid_aggregator(la, buf, sizeof(buf)),
591 la->la_nports, la->la_nports + 1));
593 KASSERT(la->la_refcnt > la->la_nports, ("aggregator refcnt invalid"));
594 TAILQ_INSERT_HEAD(&la->la_ports, lp, lp_dist_q);
597 lacp_suppress_distributing(lsc, la);
599 lp->lp_state |= LACP_STATE_DISTRIBUTING;
600 lgp->lp_flags |= LAGG_PORT_DISTRIBUTING;
602 if (lsc->lsc_active_aggregator != la) {
603 lacp_select_active_aggregator(lsc);
608 lacp_transit_expire(void *vp)
610 struct lacp_softc *lsc = vp;
612 LACP_DPRINTF((NULL, "%s\n", __func__));
613 lsc->lsc_suppress_distributing = FALSE;
617 lacp_attach(struct lagg_softc *lgs)
619 struct lacp_softc *lsc;
621 LAGG_LOCK_ASSERT(lgs);
623 lsc = malloc(sizeof(struct lacp_softc),
624 M_DEVBUF, M_NOWAIT|M_ZERO);
628 lgs->sc_psc = (caddr_t)lsc;
631 lsc->lsc_hashkey = arc4random();
632 lsc->lsc_active_aggregator = NULL;
633 TAILQ_INIT(&lsc->lsc_aggregators);
634 LIST_INIT(&lsc->lsc_ports);
636 callout_init_mtx(&lsc->lsc_transit_callout, &lgs->sc_mtx, 0);
637 callout_init_mtx(&lsc->lsc_callout, &lgs->sc_mtx, 0);
639 /* if the lagg is already up then do the same */
640 if (lgs->sc_ifp->if_drv_flags & IFF_DRV_RUNNING)
647 lacp_detach(struct lagg_softc *lgs)
649 struct lacp_softc *lsc = LACP_SOFTC(lgs);
651 KASSERT(TAILQ_EMPTY(&lsc->lsc_aggregators),
652 ("aggregators still active"));
653 KASSERT(lsc->lsc_active_aggregator == NULL,
654 ("aggregator still attached"));
657 callout_drain(&lsc->lsc_transit_callout);
658 callout_drain(&lsc->lsc_callout);
665 lacp_init(struct lagg_softc *lgs)
667 struct lacp_softc *lsc = LACP_SOFTC(lgs);
669 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc);
673 lacp_stop(struct lagg_softc *lgs)
675 struct lacp_softc *lsc = LACP_SOFTC(lgs);
677 callout_stop(&lsc->lsc_transit_callout);
678 callout_stop(&lsc->lsc_callout);
682 lacp_select_tx_port(struct lagg_softc *lgs, struct mbuf *m)
684 struct lacp_softc *lsc = LACP_SOFTC(lgs);
685 struct lacp_aggregator *la;
686 struct lacp_port *lp;
690 LAGG_LOCK_ASSERT(lgs);
692 if (__predict_false(lsc->lsc_suppress_distributing)) {
693 LACP_DPRINTF((NULL, "%s: waiting transit\n", __func__));
697 la = lsc->lsc_active_aggregator;
698 if (__predict_false(la == NULL)) {
699 LACP_DPRINTF((NULL, "%s: no active aggregator\n", __func__));
703 nports = la->la_nports;
704 KASSERT(nports > 0, ("no ports available"));
706 hash = lagg_hashmbuf(m, lsc->lsc_hashkey);
708 lp = TAILQ_FIRST(&la->la_ports);
710 lp = TAILQ_NEXT(lp, lp_dist_q);
713 KASSERT((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0,
714 ("aggregated port is not distributing"));
716 return (lp->lp_lagg);
719 * lacp_suppress_distributing: drop transmit packets for a while
720 * to preserve packet ordering.
724 lacp_suppress_distributing(struct lacp_softc *lsc, struct lacp_aggregator *la)
726 if (lsc->lsc_active_aggregator != la) {
730 LACP_DPRINTF((NULL, "%s\n", __func__));
731 lsc->lsc_suppress_distributing = TRUE;
732 /* XXX should consider collector max delay */
733 callout_reset(&lsc->lsc_transit_callout,
734 LACP_TRANSIT_DELAY * hz / 1000, lacp_transit_expire, lsc);
738 lacp_compare_peerinfo(const struct lacp_peerinfo *a,
739 const struct lacp_peerinfo *b)
741 return (memcmp(a, b, offsetof(struct lacp_peerinfo, lip_state)));
745 lacp_compare_systemid(const struct lacp_systemid *a,
746 const struct lacp_systemid *b)
748 return (memcmp(a, b, sizeof(*a)));
753 lacp_compare_portid(const struct lacp_portid *a,
754 const struct lacp_portid *b)
756 return (memcmp(a, b, sizeof(*a)));
761 lacp_aggregator_bandwidth(struct lacp_aggregator *la)
763 struct lacp_port *lp;
766 lp = TAILQ_FIRST(&la->la_ports);
771 speed = ifmedia_baudrate(lp->lp_media);
772 speed *= la->la_nports;
774 LACP_DPRINTF((lp, "speed 0? media=0x%x nports=%d\n",
775 lp->lp_media, la->la_nports));
782 * lacp_select_active_aggregator: select an aggregator to be used to transmit
783 * packets from lagg(4) interface.
787 lacp_select_active_aggregator(struct lacp_softc *lsc)
789 struct lacp_aggregator *la;
790 struct lacp_aggregator *best_la = NULL;
791 uint64_t best_speed = 0;
792 #if defined(LACP_DEBUG)
793 char buf[LACP_LAGIDSTR_MAX+1];
794 #endif /* defined(LACP_DEBUG) */
796 LACP_DPRINTF((NULL, "%s:\n", __func__));
798 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) {
801 if (la->la_nports == 0) {
805 speed = lacp_aggregator_bandwidth(la);
806 LACP_DPRINTF((NULL, "%s, speed=%jd, nports=%d\n",
807 lacp_format_lagid_aggregator(la, buf, sizeof(buf)),
808 speed, la->la_nports));
809 if (speed > best_speed ||
810 (speed == best_speed &&
811 la == lsc->lsc_active_aggregator)) {
817 KASSERT(best_la == NULL || best_la->la_nports > 0,
818 ("invalid aggregator refcnt"));
819 KASSERT(best_la == NULL || !TAILQ_EMPTY(&best_la->la_ports),
820 ("invalid aggregator list"));
822 #if defined(LACP_DEBUG)
823 if (lsc->lsc_active_aggregator != best_la) {
824 LACP_DPRINTF((NULL, "active aggregator changed\n"));
825 LACP_DPRINTF((NULL, "old %s\n",
826 lacp_format_lagid_aggregator(lsc->lsc_active_aggregator,
829 LACP_DPRINTF((NULL, "active aggregator not changed\n"));
831 LACP_DPRINTF((NULL, "new %s\n",
832 lacp_format_lagid_aggregator(best_la, buf, sizeof(buf))));
833 #endif /* defined(LACP_DEBUG) */
835 if (lsc->lsc_active_aggregator != best_la) {
836 lsc->lsc_active_aggregator = best_la;
838 lacp_suppress_distributing(lsc, best_la);
844 lacp_compose_key(struct lacp_port *lp)
846 struct lagg_port *lgp = lp->lp_lagg;
847 struct lagg_softc *lgs = lgp->lp_lagg;
848 u_int media = lp->lp_media;
851 KASSERT(IFM_TYPE(media) == IFM_ETHER, ("invalid interface type"));
853 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) {
856 * non-aggregatable links should have unique keys.
858 * XXX this isn't really unique as if_index is 16 bit.
861 /* bit 0..14: (some bits of) if_index of this port */
862 key = lp->lp_ifp->if_index;
866 u_int subtype = IFM_SUBTYPE(media);
868 KASSERT((media & IFM_HDX) == 0, ("aggregating HDX interface"));
870 /* bit 0..4: IFM_SUBTYPE */
872 /* bit 5..14: (some bits of) if_index of lagg device */
873 key |= 0x7fe0 & ((lgs->sc_ifp->if_index) << 5);
880 lacp_aggregator_addref(struct lacp_softc *lsc, struct lacp_aggregator *la)
882 #if defined(LACP_DEBUG)
883 char buf[LACP_LAGIDSTR_MAX+1];
886 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n",
888 lacp_format_lagid(&la->la_actor, &la->la_partner,
890 la->la_refcnt, la->la_refcnt + 1));
892 KASSERT(la->la_refcnt > 0, ("refcount <= 0"));
894 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcount"));
898 lacp_aggregator_delref(struct lacp_softc *lsc, struct lacp_aggregator *la)
900 #if defined(LACP_DEBUG)
901 char buf[LACP_LAGIDSTR_MAX+1];
904 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n",
906 lacp_format_lagid(&la->la_actor, &la->la_partner,
908 la->la_refcnt, la->la_refcnt - 1));
910 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcnt"));
912 if (la->la_refcnt > 0) {
916 KASSERT(la->la_refcnt == 0, ("refcount not zero"));
917 KASSERT(lsc->lsc_active_aggregator != la, ("aggregator active"));
919 TAILQ_REMOVE(&lsc->lsc_aggregators, la, la_q);
925 * lacp_aggregator_get: allocate an aggregator.
928 static struct lacp_aggregator *
929 lacp_aggregator_get(struct lacp_softc *lsc, struct lacp_port *lp)
931 struct lacp_aggregator *la;
933 la = malloc(sizeof(*la), M_DEVBUF, M_NOWAIT);
937 TAILQ_INIT(&la->la_ports);
939 TAILQ_INSERT_TAIL(&lsc->lsc_aggregators, la, la_q);
946 * lacp_fill_aggregator_id: setup a newly allocated aggregator from a port.
950 lacp_fill_aggregator_id(struct lacp_aggregator *la, const struct lacp_port *lp)
952 lacp_fill_aggregator_id_peer(&la->la_partner, &lp->lp_partner);
953 lacp_fill_aggregator_id_peer(&la->la_actor, &lp->lp_actor);
955 la->la_actor.lip_state = lp->lp_state & LACP_STATE_AGGREGATION;
959 lacp_fill_aggregator_id_peer(struct lacp_peerinfo *lpi_aggr,
960 const struct lacp_peerinfo *lpi_port)
962 memset(lpi_aggr, 0, sizeof(*lpi_aggr));
963 lpi_aggr->lip_systemid = lpi_port->lip_systemid;
964 lpi_aggr->lip_key = lpi_port->lip_key;
968 * lacp_aggregator_is_compatible: check if a port can join to an aggregator.
972 lacp_aggregator_is_compatible(const struct lacp_aggregator *la,
973 const struct lacp_port *lp)
975 if (!(lp->lp_state & LACP_STATE_AGGREGATION) ||
976 !(lp->lp_partner.lip_state & LACP_STATE_AGGREGATION)) {
980 if (!(la->la_actor.lip_state & LACP_STATE_AGGREGATION)) {
984 if (!lacp_peerinfo_is_compatible(&la->la_partner, &lp->lp_partner)) {
988 if (!lacp_peerinfo_is_compatible(&la->la_actor, &lp->lp_actor)) {
996 lacp_peerinfo_is_compatible(const struct lacp_peerinfo *a,
997 const struct lacp_peerinfo *b)
999 if (memcmp(&a->lip_systemid, &b->lip_systemid,
1000 sizeof(a->lip_systemid))) {
1004 if (memcmp(&a->lip_key, &b->lip_key, sizeof(a->lip_key))) {
1012 lacp_port_enable(struct lacp_port *lp)
1014 lp->lp_state |= LACP_STATE_AGGREGATION;
1018 lacp_port_disable(struct lacp_port *lp)
1020 lacp_set_mux(lp, LACP_MUX_DETACHED);
1022 lp->lp_state &= ~LACP_STATE_AGGREGATION;
1023 lp->lp_selected = LACP_UNSELECTED;
1024 lacp_sm_rx_record_default(lp);
1025 lp->lp_partner.lip_state &= ~LACP_STATE_AGGREGATION;
1026 lp->lp_state &= ~LACP_STATE_EXPIRED;
1030 * lacp_select: select an aggregator. create one if necessary.
1033 lacp_select(struct lacp_port *lp)
1035 struct lacp_softc *lsc = lp->lp_lsc;
1036 struct lacp_aggregator *la;
1037 #if defined(LACP_DEBUG)
1038 char buf[LACP_LAGIDSTR_MAX+1];
1041 if (lp->lp_aggregator) {
1045 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE),
1046 ("timer_wait_while still active"));
1048 LACP_DPRINTF((lp, "port lagid=%s\n",
1049 lacp_format_lagid(&lp->lp_actor, &lp->lp_partner,
1050 buf, sizeof(buf))));
1052 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) {
1053 if (lacp_aggregator_is_compatible(la, lp)) {
1059 la = lacp_aggregator_get(lsc, lp);
1061 LACP_DPRINTF((lp, "aggregator creation failed\n"));
1064 * will retry on the next tick.
1069 lacp_fill_aggregator_id(la, lp);
1070 LACP_DPRINTF((lp, "aggregator created\n"));
1072 LACP_DPRINTF((lp, "compatible aggregator found\n"));
1073 lacp_aggregator_addref(lsc, la);
1076 LACP_DPRINTF((lp, "aggregator lagid=%s\n",
1077 lacp_format_lagid(&la->la_actor, &la->la_partner,
1078 buf, sizeof(buf))));
1080 lp->lp_aggregator = la;
1081 lp->lp_selected = LACP_SELECTED;
1085 * lacp_unselect: finish unselect/detach process.
1089 lacp_unselect(struct lacp_port *lp)
1091 struct lacp_softc *lsc = lp->lp_lsc;
1092 struct lacp_aggregator *la = lp->lp_aggregator;
1094 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE),
1095 ("timer_wait_while still active"));
1101 lp->lp_aggregator = NULL;
1102 lacp_aggregator_delref(lsc, la);
1108 lacp_sm_mux(struct lacp_port *lp)
1110 enum lacp_mux_state new_state;
1112 (lp->lp_partner.lip_state & LACP_STATE_SYNC) != 0;
1113 boolean_t p_collecting =
1114 (lp->lp_partner.lip_state & LACP_STATE_COLLECTING) != 0;
1115 enum lacp_selected selected = lp->lp_selected;
1116 struct lacp_aggregator *la;
1118 /* LACP_DPRINTF((lp, "%s: state %d\n", __func__, lp->lp_mux_state)); */
1121 la = lp->lp_aggregator;
1122 KASSERT(lp->lp_mux_state == LACP_MUX_DETACHED || la != NULL,
1123 ("MUX not detached"));
1124 new_state = lp->lp_mux_state;
1125 switch (lp->lp_mux_state) {
1126 case LACP_MUX_DETACHED:
1127 if (selected != LACP_UNSELECTED) {
1128 new_state = LACP_MUX_WAITING;
1131 case LACP_MUX_WAITING:
1132 KASSERT(la->la_pending > 0 ||
1133 !LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE),
1134 ("timer_wait_while still active"));
1135 if (selected == LACP_SELECTED && la->la_pending == 0) {
1136 new_state = LACP_MUX_ATTACHED;
1137 } else if (selected == LACP_UNSELECTED) {
1138 new_state = LACP_MUX_DETACHED;
1141 case LACP_MUX_ATTACHED:
1142 if (selected == LACP_SELECTED && p_sync) {
1143 new_state = LACP_MUX_COLLECTING;
1144 } else if (selected != LACP_SELECTED) {
1145 new_state = LACP_MUX_DETACHED;
1148 case LACP_MUX_COLLECTING:
1149 if (selected == LACP_SELECTED && p_sync && p_collecting) {
1150 new_state = LACP_MUX_DISTRIBUTING;
1151 } else if (selected != LACP_SELECTED || !p_sync) {
1152 new_state = LACP_MUX_ATTACHED;
1155 case LACP_MUX_DISTRIBUTING:
1156 if (selected != LACP_SELECTED || !p_sync || !p_collecting) {
1157 new_state = LACP_MUX_COLLECTING;
1161 panic("%s: unknown state", __func__);
1164 if (lp->lp_mux_state == new_state) {
1168 lacp_set_mux(lp, new_state);
1173 lacp_set_mux(struct lacp_port *lp, enum lacp_mux_state new_state)
1175 struct lacp_aggregator *la = lp->lp_aggregator;
1177 if (lp->lp_mux_state == new_state) {
1181 switch (new_state) {
1182 case LACP_MUX_DETACHED:
1183 lp->lp_state &= ~LACP_STATE_SYNC;
1184 lacp_disable_distributing(lp);
1185 lacp_disable_collecting(lp);
1186 lacp_sm_assert_ntt(lp);
1188 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE)) {
1189 KASSERT(la->la_pending > 0,
1190 ("timer_wait_while not active"));
1193 LACP_TIMER_DISARM(lp, LACP_TIMER_WAIT_WHILE);
1196 case LACP_MUX_WAITING:
1197 LACP_TIMER_ARM(lp, LACP_TIMER_WAIT_WHILE,
1198 LACP_AGGREGATE_WAIT_TIME);
1201 case LACP_MUX_ATTACHED:
1202 lp->lp_state |= LACP_STATE_SYNC;
1203 lacp_disable_collecting(lp);
1204 lacp_sm_assert_ntt(lp);
1206 case LACP_MUX_COLLECTING:
1207 lacp_enable_collecting(lp);
1208 lacp_disable_distributing(lp);
1209 lacp_sm_assert_ntt(lp);
1211 case LACP_MUX_DISTRIBUTING:
1212 lacp_enable_distributing(lp);
1215 panic("%s: unknown state", __func__);
1218 LACP_DPRINTF((lp, "mux_state %d -> %d\n", lp->lp_mux_state, new_state));
1220 lp->lp_mux_state = new_state;
1224 lacp_sm_mux_timer(struct lacp_port *lp)
1226 struct lacp_aggregator *la = lp->lp_aggregator;
1227 #if defined(LACP_DEBUG)
1228 char buf[LACP_LAGIDSTR_MAX+1];
1231 KASSERT(la->la_pending > 0, ("no pending event"));
1233 LACP_DPRINTF((lp, "%s: aggregator %s, pending %d -> %d\n", __func__,
1234 lacp_format_lagid(&la->la_actor, &la->la_partner,
1236 la->la_pending, la->la_pending - 1));
1241 /* periodic transmit machine */
1244 lacp_sm_ptx_update_timeout(struct lacp_port *lp, uint8_t oldpstate)
1246 if (LACP_STATE_EQ(oldpstate, lp->lp_partner.lip_state,
1247 LACP_STATE_TIMEOUT)) {
1251 LACP_DPRINTF((lp, "partner timeout changed\n"));
1254 * FAST_PERIODIC -> SLOW_PERIODIC
1256 * SLOW_PERIODIC (-> PERIODIC_TX) -> FAST_PERIODIC
1258 * let lacp_sm_ptx_tx_schedule to update timeout.
1261 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC);
1264 * if timeout has been shortened, assert NTT.
1267 if ((lp->lp_partner.lip_state & LACP_STATE_TIMEOUT)) {
1268 lacp_sm_assert_ntt(lp);
1273 lacp_sm_ptx_tx_schedule(struct lacp_port *lp)
1277 if (!(lp->lp_state & LACP_STATE_ACTIVITY) &&
1278 !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) {
1284 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC);
1288 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_PERIODIC)) {
1292 timeout = (lp->lp_partner.lip_state & LACP_STATE_TIMEOUT) ?
1293 LACP_FAST_PERIODIC_TIME : LACP_SLOW_PERIODIC_TIME;
1295 LACP_TIMER_ARM(lp, LACP_TIMER_PERIODIC, timeout);
1299 lacp_sm_ptx_timer(struct lacp_port *lp)
1301 lacp_sm_assert_ntt(lp);
1305 lacp_sm_rx(struct lacp_port *lp, const struct lacpdu *du)
1310 * check LACP_DISABLED first
1313 if (!(lp->lp_state & LACP_STATE_AGGREGATION)) {
1318 * check loopback condition.
1321 if (!lacp_compare_systemid(&du->ldu_actor.lip_systemid,
1322 &lp->lp_actor.lip_systemid)) {
1327 * EXPIRED, DEFAULTED, CURRENT -> CURRENT
1330 lacp_sm_rx_update_selected(lp, du);
1331 lacp_sm_rx_update_ntt(lp, du);
1332 lacp_sm_rx_record_pdu(lp, du);
1334 timeout = (lp->lp_state & LACP_STATE_TIMEOUT) ?
1335 LACP_SHORT_TIMEOUT_TIME : LACP_LONG_TIMEOUT_TIME;
1336 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, timeout);
1338 lp->lp_state &= ~LACP_STATE_EXPIRED;
1341 * kick transmit machine without waiting the next tick.
1348 lacp_sm_rx_set_expired(struct lacp_port *lp)
1350 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC;
1351 lp->lp_partner.lip_state |= LACP_STATE_TIMEOUT;
1352 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, LACP_SHORT_TIMEOUT_TIME);
1353 lp->lp_state |= LACP_STATE_EXPIRED;
1357 lacp_sm_rx_timer(struct lacp_port *lp)
1359 if ((lp->lp_state & LACP_STATE_EXPIRED) == 0) {
1360 /* CURRENT -> EXPIRED */
1361 LACP_DPRINTF((lp, "%s: CURRENT -> EXPIRED\n", __func__));
1362 lacp_sm_rx_set_expired(lp);
1364 /* EXPIRED -> DEFAULTED */
1365 LACP_DPRINTF((lp, "%s: EXPIRED -> DEFAULTED\n", __func__));
1366 lacp_sm_rx_update_default_selected(lp);
1367 lacp_sm_rx_record_default(lp);
1368 lp->lp_state &= ~LACP_STATE_EXPIRED;
1373 lacp_sm_rx_record_pdu(struct lacp_port *lp, const struct lacpdu *du)
1377 #if defined(LACP_DEBUG)
1378 char buf[LACP_STATESTR_MAX+1];
1381 /* LACP_DPRINTF((lp, "%s\n", __func__)); */
1383 oldpstate = lp->lp_partner.lip_state;
1385 active = (du->ldu_actor.lip_state & LACP_STATE_ACTIVITY)
1386 || ((lp->lp_state & LACP_STATE_ACTIVITY) &&
1387 (du->ldu_partner.lip_state & LACP_STATE_ACTIVITY));
1389 lp->lp_partner = du->ldu_actor;
1391 ((LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state,
1392 LACP_STATE_AGGREGATION) &&
1393 !lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner))
1394 || (du->ldu_partner.lip_state & LACP_STATE_AGGREGATION) == 0)) {
1397 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC;
1400 lp->lp_state &= ~LACP_STATE_DEFAULTED;
1402 if (oldpstate != lp->lp_partner.lip_state) {
1403 LACP_DPRINTF((lp, "old pstate %s\n",
1404 lacp_format_state(oldpstate, buf, sizeof(buf))));
1405 LACP_DPRINTF((lp, "new pstate %s\n",
1406 lacp_format_state(lp->lp_partner.lip_state, buf,
1410 lacp_sm_ptx_update_timeout(lp, oldpstate);
1414 lacp_sm_rx_update_ntt(struct lacp_port *lp, const struct lacpdu *du)
1416 /* LACP_DPRINTF((lp, "%s\n", __func__)); */
1418 if (lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner) ||
1419 !LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state,
1420 LACP_STATE_ACTIVITY | LACP_STATE_SYNC | LACP_STATE_AGGREGATION)) {
1421 LACP_DPRINTF((lp, "%s: assert ntt\n", __func__));
1422 lacp_sm_assert_ntt(lp);
1427 lacp_sm_rx_record_default(struct lacp_port *lp)
1431 /* LACP_DPRINTF((lp, "%s\n", __func__)); */
1433 oldpstate = lp->lp_partner.lip_state;
1434 lp->lp_partner = lacp_partner_admin;
1435 lp->lp_state |= LACP_STATE_DEFAULTED;
1436 lacp_sm_ptx_update_timeout(lp, oldpstate);
1440 lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *lp,
1441 const struct lacp_peerinfo *info)
1443 /* LACP_DPRINTF((lp, "%s\n", __func__)); */
1445 if (lacp_compare_peerinfo(&lp->lp_partner, info) ||
1446 !LACP_STATE_EQ(lp->lp_partner.lip_state, info->lip_state,
1447 LACP_STATE_AGGREGATION)) {
1448 lp->lp_selected = LACP_UNSELECTED;
1449 /* mux machine will clean up lp->lp_aggregator */
1454 lacp_sm_rx_update_selected(struct lacp_port *lp, const struct lacpdu *du)
1456 /* LACP_DPRINTF((lp, "%s\n", __func__)); */
1458 lacp_sm_rx_update_selected_from_peerinfo(lp, &du->ldu_actor);
1462 lacp_sm_rx_update_default_selected(struct lacp_port *lp)
1464 /* LACP_DPRINTF((lp, "%s\n", __func__)); */
1466 lacp_sm_rx_update_selected_from_peerinfo(lp, &lacp_partner_admin);
1469 /* transmit machine */
1472 lacp_sm_tx(struct lacp_port *lp)
1476 if (!(lp->lp_state & LACP_STATE_AGGREGATION)
1478 || (!(lp->lp_state & LACP_STATE_ACTIVITY)
1479 && !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY))
1482 lp->lp_flags &= ~LACP_PORT_NTT;
1485 if (!(lp->lp_flags & LACP_PORT_NTT)) {
1489 /* Rate limit to 3 PDUs per LACP_FAST_PERIODIC_TIME */
1490 if (ppsratecheck(&lp->lp_last_lacpdu, &lp->lp_lacpdu_sent,
1491 (3 / LACP_FAST_PERIODIC_TIME)) == 0) {
1492 LACP_DPRINTF((lp, "rate limited pdu\n"));
1496 error = lacp_xmit_lacpdu(lp);
1499 lp->lp_flags &= ~LACP_PORT_NTT;
1501 LACP_DPRINTF((lp, "lacpdu transmit failure, error %d\n",
1507 lacp_sm_assert_ntt(struct lacp_port *lp)
1510 lp->lp_flags |= LACP_PORT_NTT;
1514 lacp_run_timers(struct lacp_port *lp)
1518 for (i = 0; i < LACP_NTIMER; i++) {
1519 KASSERT(lp->lp_timer[i] >= 0,
1520 ("invalid timer value %d", lp->lp_timer[i]));
1521 if (lp->lp_timer[i] == 0) {
1523 } else if (--lp->lp_timer[i] <= 0) {
1524 if (lacp_timer_funcs[i]) {
1525 (*lacp_timer_funcs[i])(lp);
1532 lacp_marker_input(struct lagg_port *lgp, struct mbuf *m)
1534 struct lacp_port *lp = LACP_PORT(lgp);
1535 struct markerdu *mdu;
1538 LAGG_LOCK_ASSERT(lgp->lp_lagg);
1540 if (__predict_false(lp->lp_flags & LACP_PORT_DETACHING)) {
1544 if (m->m_pkthdr.len != sizeof(*mdu)) {
1548 if ((m->m_flags & M_MCAST) == 0) {
1552 if (m->m_len < sizeof(*mdu)) {
1553 m = m_pullup(m, sizeof(*mdu));
1559 mdu = mtod(m, struct markerdu *);
1561 if (memcmp(&mdu->mdu_eh.ether_dhost,
1562 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) {
1567 KASSERT(mdu->mdu_sph.sph_subtype == SLOWPROTOCOLS_SUBTYPE_MARKER,
1568 ("a very bad kassert!"));
1571 if (mdu->mdu_sph.sph_version != 1) {
1575 switch (mdu->mdu_tlv.tlv_type) {
1576 case MARKER_TYPE_INFO:
1577 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv,
1578 marker_info_tlv_template, TRUE)) {
1581 mdu->mdu_tlv.tlv_type = MARKER_TYPE_RESPONSE;
1582 memcpy(&mdu->mdu_eh.ether_dhost,
1583 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN);
1584 memcpy(&mdu->mdu_eh.ether_shost,
1585 lgp->lp_lladdr, ETHER_ADDR_LEN);
1586 error = lagg_enqueue(lp->lp_ifp, m);
1589 case MARKER_TYPE_RESPONSE:
1590 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv,
1591 marker_response_tlv_template, TRUE)) {
1595 * we are not interested in responses as
1596 * we don't have a marker sender.
1611 tlv_check(const void *p, size_t size, const struct tlvhdr *tlv,
1612 const struct tlv_template *tmpl, boolean_t check_type)
1614 while (/* CONSTCOND */ 1) {
1615 if ((const char *)tlv - (const char *)p + sizeof(*tlv) > size) {
1618 if ((check_type && tlv->tlv_type != tmpl->tmpl_type) ||
1619 tlv->tlv_length != tmpl->tmpl_length) {
1622 if (tmpl->tmpl_type == 0) {
1625 tlv = (const struct tlvhdr *)
1626 ((const char *)tlv + tlv->tlv_length);
1633 #if defined(LACP_DEBUG)
1635 lacp_format_mac(const uint8_t *mac, char *buf, size_t buflen)
1637 snprintf(buf, buflen, "%02X-%02X-%02X-%02X-%02X-%02X",
1649 lacp_format_systemid(const struct lacp_systemid *sysid,
1650 char *buf, size_t buflen)
1652 char macbuf[LACP_MACSTR_MAX+1];
1654 snprintf(buf, buflen, "%04X,%s",
1655 ntohs(sysid->lsi_prio),
1656 lacp_format_mac(sysid->lsi_mac, macbuf, sizeof(macbuf)));
1662 lacp_format_portid(const struct lacp_portid *portid, char *buf, size_t buflen)
1664 snprintf(buf, buflen, "%04X,%04X",
1665 ntohs(portid->lpi_prio),
1666 ntohs(portid->lpi_portno));
1672 lacp_format_partner(const struct lacp_peerinfo *peer, char *buf, size_t buflen)
1674 char sysid[LACP_SYSTEMIDSTR_MAX+1];
1675 char portid[LACP_PORTIDSTR_MAX+1];
1677 snprintf(buf, buflen, "(%s,%04X,%s)",
1678 lacp_format_systemid(&peer->lip_systemid, sysid, sizeof(sysid)),
1679 ntohs(peer->lip_key),
1680 lacp_format_portid(&peer->lip_portid, portid, sizeof(portid)));
1686 lacp_format_lagid(const struct lacp_peerinfo *a,
1687 const struct lacp_peerinfo *b, char *buf, size_t buflen)
1689 char astr[LACP_PARTNERSTR_MAX+1];
1690 char bstr[LACP_PARTNERSTR_MAX+1];
1694 * there's a convention to display small numbered peer
1698 if (lacp_compare_peerinfo(a, b) > 0) {
1699 const struct lacp_peerinfo *t;
1707 snprintf(buf, buflen, "[%s,%s]",
1708 lacp_format_partner(a, astr, sizeof(astr)),
1709 lacp_format_partner(b, bstr, sizeof(bstr)));
1715 lacp_format_lagid_aggregator(const struct lacp_aggregator *la,
1716 char *buf, size_t buflen)
1722 return (lacp_format_lagid(&la->la_actor, &la->la_partner, buf, buflen));
1726 lacp_format_state(uint8_t state, char *buf, size_t buflen)
1728 snprintf(buf, buflen, "%b", state, LACP_STATE_BITS);
1733 lacp_dump_lacpdu(const struct lacpdu *du)
1735 char buf[LACP_PARTNERSTR_MAX+1];
1736 char buf2[LACP_STATESTR_MAX+1];
1738 printf("actor=%s\n",
1739 lacp_format_partner(&du->ldu_actor, buf, sizeof(buf)));
1740 printf("actor.state=%s\n",
1741 lacp_format_state(du->ldu_actor.lip_state, buf2, sizeof(buf2)));
1742 printf("partner=%s\n",
1743 lacp_format_partner(&du->ldu_partner, buf, sizeof(buf)));
1744 printf("partner.state=%s\n",
1745 lacp_format_state(du->ldu_partner.lip_state, buf2, sizeof(buf2)));
1747 printf("maxdelay=%d\n", ntohs(du->ldu_collector.lci_maxdelay));
1751 lacp_dprintf(const struct lacp_port *lp, const char *fmt, ...)
1756 printf("%s: ", lp->lp_ifp->if_xname);