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>
42 #include <sys/rwlock.h>
43 #include <sys/taskqueue.h>
46 #include <net/if_dl.h>
47 #include <net/ethernet.h>
48 #include <net/if_media.h>
49 #include <net/if_types.h>
51 #include <net/if_lagg.h>
52 #include <net/ieee8023ad_lacp.h>
55 * actor system priority and port priority.
56 * XXX should be configurable.
59 #define LACP_SYSTEM_PRIO 0x8000
60 #define LACP_PORT_PRIO 0x8000
62 const uint8_t ethermulticastaddr_slowprotocols[ETHER_ADDR_LEN] =
63 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x02 };
65 static const struct tlv_template lacp_info_tlv_template[] = {
66 { LACP_TYPE_ACTORINFO,
67 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) },
68 { LACP_TYPE_PARTNERINFO,
69 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) },
70 { LACP_TYPE_COLLECTORINFO,
71 sizeof(struct tlvhdr) + sizeof(struct lacp_collectorinfo) },
75 typedef void (*lacp_timer_func_t)(struct lacp_port *);
77 static const struct tlv_template marker_info_tlv_template[] = {
78 { MARKER_TYPE_INFO, 16 },
82 static const struct tlv_template marker_response_tlv_template[] = {
83 { MARKER_TYPE_RESPONSE, 16 },
87 static void lacp_fill_actorinfo(struct lacp_port *, struct lacp_peerinfo *);
89 static uint64_t lacp_aggregator_bandwidth(struct lacp_aggregator *);
90 static void lacp_suppress_distributing(struct lacp_softc *,
91 struct lacp_aggregator *);
92 static void lacp_transit_expire(void *);
93 static void lacp_select_active_aggregator(struct lacp_softc *);
94 static uint16_t lacp_compose_key(struct lacp_port *);
95 static int tlv_check(const void *, size_t, const struct tlvhdr *,
96 const struct tlv_template *, boolean_t);
97 static void lacp_tick(void *);
99 static void lacp_fill_aggregator_id(struct lacp_aggregator *,
100 const struct lacp_port *);
101 static void lacp_fill_aggregator_id_peer(struct lacp_peerinfo *,
102 const struct lacp_peerinfo *);
103 static int lacp_aggregator_is_compatible(const struct lacp_aggregator *,
104 const struct lacp_port *);
105 static int lacp_peerinfo_is_compatible(const struct lacp_peerinfo *,
106 const struct lacp_peerinfo *);
108 static struct lacp_aggregator *lacp_aggregator_get(struct lacp_softc *,
110 static void lacp_aggregator_addref(struct lacp_softc *,
111 struct lacp_aggregator *);
112 static void lacp_aggregator_delref(struct lacp_softc *,
113 struct lacp_aggregator *);
115 /* receive machine */
117 static void lacp_dequeue(void *, int);
118 static int lacp_pdu_input(struct lagg_port *, struct mbuf *);
119 static int lacp_marker_input(struct lagg_port *, struct mbuf *);
120 static void lacp_sm_rx(struct lacp_port *, const struct lacpdu *);
121 static void lacp_sm_rx_timer(struct lacp_port *);
122 static void lacp_sm_rx_set_expired(struct lacp_port *);
123 static void lacp_sm_rx_update_ntt(struct lacp_port *,
124 const struct lacpdu *);
125 static void lacp_sm_rx_record_pdu(struct lacp_port *,
126 const struct lacpdu *);
127 static void lacp_sm_rx_update_selected(struct lacp_port *,
128 const struct lacpdu *);
129 static void lacp_sm_rx_record_default(struct lacp_port *);
130 static void lacp_sm_rx_update_default_selected(struct lacp_port *);
131 static void lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *,
132 const struct lacp_peerinfo *);
136 static void lacp_sm_mux(struct lacp_port *);
137 static void lacp_set_mux(struct lacp_port *, enum lacp_mux_state);
138 static void lacp_sm_mux_timer(struct lacp_port *);
140 /* periodic transmit machine */
142 static void lacp_sm_ptx_update_timeout(struct lacp_port *, uint8_t);
143 static void lacp_sm_ptx_tx_schedule(struct lacp_port *);
144 static void lacp_sm_ptx_timer(struct lacp_port *);
146 /* transmit machine */
148 static void lacp_sm_tx(struct lacp_port *);
149 static void lacp_sm_assert_ntt(struct lacp_port *);
151 static void lacp_run_timers(struct lacp_port *);
152 static int lacp_compare_peerinfo(const struct lacp_peerinfo *,
153 const struct lacp_peerinfo *);
154 static int lacp_compare_systemid(const struct lacp_systemid *,
155 const struct lacp_systemid *);
156 static void lacp_port_enable(struct lacp_port *);
157 static void lacp_port_disable(struct lacp_port *);
158 static void lacp_select(struct lacp_port *);
159 static void lacp_unselect(struct lacp_port *);
160 static void lacp_disable_collecting(struct lacp_port *);
161 static void lacp_enable_collecting(struct lacp_port *);
162 static void lacp_disable_distributing(struct lacp_port *);
163 static void lacp_enable_distributing(struct lacp_port *);
164 static int lacp_xmit_lacpdu(struct lacp_port *);
166 #if defined(LACP_DEBUG)
167 static void lacp_dump_lacpdu(const struct lacpdu *);
168 static const char *lacp_format_partner(const struct lacp_peerinfo *, char *,
170 static const char *lacp_format_lagid(const struct lacp_peerinfo *,
171 const struct lacp_peerinfo *, char *, size_t);
172 static const char *lacp_format_lagid_aggregator(const struct lacp_aggregator *,
174 static const char *lacp_format_state(uint8_t, char *, size_t);
175 static const char *lacp_format_mac(const uint8_t *, char *, size_t);
176 static const char *lacp_format_systemid(const struct lacp_systemid *, char *,
178 static const char *lacp_format_portid(const struct lacp_portid *, char *,
180 static void lacp_dprintf(const struct lacp_port *, const char *, ...)
181 __attribute__((__format__(__printf__, 2, 3)));
182 #define LACP_DPRINTF(a) lacp_dprintf a
184 #define LACP_DPRINTF(a) /* nothing */
188 * partner administration variables.
189 * XXX should be configurable.
192 static const struct lacp_peerinfo lacp_partner_admin = {
193 .lip_systemid = { .lsi_prio = 0xffff },
194 .lip_portid = { .lpi_prio = 0xffff },
197 .lip_state = LACP_STATE_SYNC | LACP_STATE_AGGREGATION |
198 LACP_STATE_COLLECTING | LACP_STATE_DISTRIBUTING,
205 static const lacp_timer_func_t lacp_timer_funcs[LACP_NTIMER] = {
206 [LACP_TIMER_CURRENT_WHILE] = lacp_sm_rx_timer,
207 [LACP_TIMER_PERIODIC] = lacp_sm_ptx_timer,
208 [LACP_TIMER_WAIT_WHILE] = lacp_sm_mux_timer,
212 lacp_input(struct lagg_port *lgp, struct mbuf *m)
214 struct lagg_softc *lgs = lgp->lp_lagg;
215 struct lacp_softc *lsc = LACP_SOFTC(lgs);
218 if (m->m_pkthdr.len < sizeof(struct ether_header) + sizeof(subtype)) {
223 m_copydata(m, sizeof(struct ether_header), sizeof(subtype), &subtype);
225 case SLOWPROTOCOLS_SUBTYPE_LACP:
226 IF_HANDOFF(&lsc->lsc_queue, m, NULL);
227 taskqueue_enqueue(taskqueue_swi, &lsc->lsc_qtask);
230 case SLOWPROTOCOLS_SUBTYPE_MARKER:
231 lacp_marker_input(lgp, m);
235 /* Unknown LACP packet type */
242 lacp_dequeue(void *arg, int pending)
244 struct lacp_softc *lsc = (struct lacp_softc *)arg;
245 struct lagg_softc *sc = lsc->lsc_lagg;
246 struct lagg_port *lgp;
251 IF_DEQUEUE(&lsc->lsc_queue, m);
254 lgp = m->m_pkthdr.rcvif->if_lagg;
255 lacp_pdu_input(lgp, m);
261 * lacp_pdu_input: process lacpdu
264 lacp_pdu_input(struct lagg_port *lgp, struct mbuf *m)
266 struct lacp_port *lp = LACP_PORT(lgp);
270 LAGG_WLOCK_ASSERT(lgp->lp_lagg);
272 if (__predict_false(lp->lp_flags & LACP_PORT_DETACHING)) {
276 if (m->m_pkthdr.len != sizeof(*du)) {
280 if ((m->m_flags & M_MCAST) == 0) {
284 if (m->m_len < sizeof(*du)) {
285 m = m_pullup(m, sizeof(*du));
291 du = mtod(m, struct lacpdu *);
293 if (memcmp(&du->ldu_eh.ether_dhost,
294 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) {
299 KASSERT(du->ldu_sph.sph_subtype == SLOWPROTOCOLS_SUBTYPE_LACP,
300 ("a very bad kassert!"));
304 * ignore the version for compatibility with
305 * the future protocol revisions.
309 if (du->ldu_sph.sph_version != 1) {
315 * ignore tlv types for compatibility with
316 * the future protocol revisions.
319 if (tlv_check(du, sizeof(*du), &du->ldu_tlv_actor,
320 lacp_info_tlv_template, FALSE)) {
324 #if defined(LACP_DEBUG)
325 LACP_DPRINTF((lp, "lacpdu receive\n"));
326 lacp_dump_lacpdu(du);
327 #endif /* defined(LACP_DEBUG) */
340 lacp_fill_actorinfo(struct lacp_port *lp, struct lacp_peerinfo *info)
342 struct lagg_port *lgp = lp->lp_lagg;
343 struct lagg_softc *lgs = lgp->lp_lagg;
345 info->lip_systemid.lsi_prio = htons(LACP_SYSTEM_PRIO);
346 memcpy(&info->lip_systemid.lsi_mac,
347 IF_LLADDR(lgs->sc_ifp), ETHER_ADDR_LEN);
348 info->lip_portid.lpi_prio = htons(LACP_PORT_PRIO);
349 info->lip_portid.lpi_portno = htons(lp->lp_ifp->if_index);
350 info->lip_state = lp->lp_state;
354 lacp_xmit_lacpdu(struct lacp_port *lp)
356 struct lagg_port *lgp = lp->lp_lagg;
361 LAGG_WLOCK_ASSERT(lgp->lp_lagg);
363 m = m_gethdr(M_DONTWAIT, MT_DATA);
367 m->m_len = m->m_pkthdr.len = sizeof(*du);
369 du = mtod(m, struct lacpdu *);
370 memset(du, 0, sizeof(*du));
372 memcpy(&du->ldu_eh.ether_dhost, ethermulticastaddr_slowprotocols,
374 memcpy(&du->ldu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN);
375 du->ldu_eh.ether_type = htons(ETHERTYPE_SLOW);
377 du->ldu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_LACP;
378 du->ldu_sph.sph_version = 1;
380 TLV_SET(&du->ldu_tlv_actor, LACP_TYPE_ACTORINFO, sizeof(du->ldu_actor));
381 du->ldu_actor = lp->lp_actor;
383 TLV_SET(&du->ldu_tlv_partner, LACP_TYPE_PARTNERINFO,
384 sizeof(du->ldu_partner));
385 du->ldu_partner = lp->lp_partner;
387 TLV_SET(&du->ldu_tlv_collector, LACP_TYPE_COLLECTORINFO,
388 sizeof(du->ldu_collector));
389 du->ldu_collector.lci_maxdelay = 0;
391 #if defined(LACP_DEBUG)
392 LACP_DPRINTF((lp, "lacpdu transmit\n"));
393 lacp_dump_lacpdu(du);
394 #endif /* defined(LACP_DEBUG) */
396 m->m_flags |= M_MCAST;
399 * XXX should use higher priority queue.
400 * otherwise network congestion can break aggregation.
403 error = lagg_enqueue(lp->lp_ifp, m);
408 lacp_linkstate(struct lagg_port *lgp)
410 struct lacp_port *lp = LACP_PORT(lgp);
411 struct ifnet *ifp = lgp->lp_ifp;
412 struct ifmediareq ifmr;
418 LAGG_WLOCK_ASSERT(lgp->lp_lagg);
420 bzero((char *)&ifmr, sizeof(ifmr));
421 error = (*ifp->if_ioctl)(ifp, SIOCGIFMEDIA, (caddr_t)&ifmr);
425 media = ifmr.ifm_active;
426 LACP_DPRINTF((lp, "media changed 0x%x -> 0x%x, ether = %d, fdx = %d, "
427 "link = %d\n", lp->lp_media, media, IFM_TYPE(media) == IFM_ETHER,
428 (media & IFM_FDX) != 0, ifp->if_link_state == LINK_STATE_UP));
429 old_state = lp->lp_state;
430 old_key = lp->lp_key;
432 lp->lp_media = media;
434 * If the port is not an active full duplex Ethernet link then it can
437 if (IFM_TYPE(media) != IFM_ETHER || (media & IFM_FDX) == 0 ||
438 ifp->if_link_state != LINK_STATE_UP) {
439 lacp_port_disable(lp);
441 lacp_port_enable(lp);
443 lp->lp_key = lacp_compose_key(lp);
445 if (old_state != lp->lp_state || old_key != lp->lp_key) {
446 LACP_DPRINTF((lp, "-> UNSELECTED\n"));
447 lp->lp_selected = LACP_UNSELECTED;
454 struct lacp_softc *lsc = arg;
455 struct lagg_softc *sc = lsc->lsc_lagg;
456 struct lacp_port *lp;
459 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) {
460 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0)
468 lacp_sm_ptx_tx_schedule(lp);
471 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc);
475 lacp_port_create(struct lagg_port *lgp)
477 struct lagg_softc *lgs = lgp->lp_lagg;
478 struct lacp_softc *lsc = LACP_SOFTC(lgs);
479 struct lacp_port *lp;
480 struct ifnet *ifp = lgp->lp_ifp;
481 struct sockaddr_dl sdl;
482 struct ifmultiaddr *rifma = NULL;
485 boolean_t active = TRUE; /* XXX should be configurable */
486 boolean_t fast = FALSE; /* XXX should be configurable */
488 LAGG_WLOCK_ASSERT(lgs);
490 bzero((char *)&sdl, sizeof(sdl));
491 sdl.sdl_len = sizeof(sdl);
492 sdl.sdl_family = AF_LINK;
493 sdl.sdl_index = ifp->if_index;
494 sdl.sdl_type = IFT_ETHER;
495 sdl.sdl_alen = ETHER_ADDR_LEN;
497 bcopy(ðermulticastaddr_slowprotocols,
498 LLADDR(&sdl), ETHER_ADDR_LEN);
499 error = if_addmulti(ifp, (struct sockaddr *)&sdl, &rifma);
501 printf("%s: ADDMULTI failed on %s\n", __func__, lgp->lp_ifname);
505 lp = malloc(sizeof(struct lacp_port),
506 M_DEVBUF, M_NOWAIT|M_ZERO);
510 lgp->lp_psc = (caddr_t)lp;
516 LIST_INSERT_HEAD(&lsc->lsc_ports, lp, lp_next);
518 lacp_fill_actorinfo(lp, &lp->lp_actor);
520 (active ? LACP_STATE_ACTIVITY : 0) |
521 (fast ? LACP_STATE_TIMEOUT : 0);
522 lp->lp_aggregator = NULL;
524 lacp_sm_rx_set_expired(lp);
530 lacp_port_destroy(struct lagg_port *lgp)
532 struct lacp_port *lp = LACP_PORT(lgp);
535 LAGG_WLOCK_ASSERT(lgp->lp_lagg);
537 for (i = 0; i < LACP_NTIMER; i++) {
538 LACP_TIMER_DISARM(lp, i);
541 lacp_disable_collecting(lp);
542 lacp_disable_distributing(lp);
544 lgp->lp_flags &= ~LAGG_PORT_DISABLED;
546 /* The address may have already been removed by if_purgemaddrs() */
547 if (!lgp->lp_detaching)
548 if_delmulti_ifma(lp->lp_ifma);
550 LIST_REMOVE(lp, lp_next);
555 lacp_port_isactive(struct lagg_port *lgp)
557 struct lacp_port *lp = LACP_PORT(lgp);
558 struct lacp_softc *lsc = lp->lp_lsc;
559 struct lacp_aggregator *la = lp->lp_aggregator;
561 /* This port is joined to the active aggregator */
562 if (la != NULL && la == lsc->lsc_active_aggregator)
569 lacp_disable_collecting(struct lacp_port *lp)
571 struct lagg_port *lgp = lp->lp_lagg;
573 LACP_DPRINTF((lp, "collecting disabled\n"));
575 lp->lp_state &= ~LACP_STATE_COLLECTING;
576 lgp->lp_flags &= ~LAGG_PORT_COLLECTING;
580 lacp_enable_collecting(struct lacp_port *lp)
582 struct lagg_port *lgp = lp->lp_lagg;
584 LACP_DPRINTF((lp, "collecting enabled\n"));
586 lp->lp_state |= LACP_STATE_COLLECTING;
587 lgp->lp_flags |= LAGG_PORT_COLLECTING;
591 lacp_disable_distributing(struct lacp_port *lp)
593 struct lacp_aggregator *la = lp->lp_aggregator;
594 struct lacp_softc *lsc = lp->lp_lsc;
595 struct lagg_port *lgp = lp->lp_lagg;
596 #if defined(LACP_DEBUG)
597 char buf[LACP_LAGIDSTR_MAX+1];
598 #endif /* defined(LACP_DEBUG) */
600 LAGG_WLOCK_ASSERT(lgp->lp_lagg);
602 if (la == NULL || (lp->lp_state & LACP_STATE_DISTRIBUTING) == 0) {
606 KASSERT(!TAILQ_EMPTY(&la->la_ports), ("no aggregator ports"));
607 KASSERT(la->la_nports > 0, ("nports invalid (%d)", la->la_nports));
608 KASSERT(la->la_refcnt >= la->la_nports, ("aggregator refcnt invalid"));
610 LACP_DPRINTF((lp, "disable distributing on aggregator %s, "
612 lacp_format_lagid_aggregator(la, buf, sizeof(buf)),
613 la->la_nports, la->la_nports - 1));
615 TAILQ_REMOVE(&la->la_ports, lp, lp_dist_q);
618 lacp_suppress_distributing(lsc, la);
620 lp->lp_state &= ~LACP_STATE_DISTRIBUTING;
621 lgp->lp_flags &= ~LAGG_PORT_DISTRIBUTING;
623 if (lsc->lsc_active_aggregator == la) {
624 lacp_select_active_aggregator(lsc);
629 lacp_enable_distributing(struct lacp_port *lp)
631 struct lacp_aggregator *la = lp->lp_aggregator;
632 struct lacp_softc *lsc = lp->lp_lsc;
633 struct lagg_port *lgp = lp->lp_lagg;
634 #if defined(LACP_DEBUG)
635 char buf[LACP_LAGIDSTR_MAX+1];
636 #endif /* defined(LACP_DEBUG) */
638 LAGG_WLOCK_ASSERT(lgp->lp_lagg);
640 if ((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0) {
644 LACP_DPRINTF((lp, "enable distributing on aggregator %s, "
646 lacp_format_lagid_aggregator(la, buf, sizeof(buf)),
647 la->la_nports, la->la_nports + 1));
649 KASSERT(la->la_refcnt > la->la_nports, ("aggregator refcnt invalid"));
650 TAILQ_INSERT_HEAD(&la->la_ports, lp, lp_dist_q);
653 lacp_suppress_distributing(lsc, la);
655 lp->lp_state |= LACP_STATE_DISTRIBUTING;
656 lgp->lp_flags |= LAGG_PORT_DISTRIBUTING;
658 if (lsc->lsc_active_aggregator != la) {
659 lacp_select_active_aggregator(lsc);
664 lacp_transit_expire(void *vp)
666 struct lacp_softc *lsc = vp;
668 LACP_DPRINTF((NULL, "%s\n", __func__));
669 lsc->lsc_suppress_distributing = FALSE;
673 lacp_attach(struct lagg_softc *lgs)
675 struct lacp_softc *lsc;
677 LAGG_WLOCK_ASSERT(lgs);
679 lsc = malloc(sizeof(struct lacp_softc),
680 M_DEVBUF, M_NOWAIT|M_ZERO);
684 lgs->sc_psc = (caddr_t)lsc;
687 lsc->lsc_hashkey = arc4random();
688 lsc->lsc_active_aggregator = NULL;
689 TAILQ_INIT(&lsc->lsc_aggregators);
690 LIST_INIT(&lsc->lsc_ports);
692 TASK_INIT(&lsc->lsc_qtask, 0, lacp_dequeue, lsc);
693 mtx_init(&lsc->lsc_queue.ifq_mtx, "lacp queue", NULL, MTX_DEF);
694 lsc->lsc_queue.ifq_maxlen = ifqmaxlen;
696 callout_init(&lsc->lsc_transit_callout, CALLOUT_MPSAFE);
697 callout_init(&lsc->lsc_callout, CALLOUT_MPSAFE);
699 /* if the lagg is already up then do the same */
700 if (lgs->sc_ifp->if_drv_flags & IFF_DRV_RUNNING)
707 lacp_detach(struct lagg_softc *lgs)
709 struct lacp_softc *lsc = LACP_SOFTC(lgs);
711 KASSERT(TAILQ_EMPTY(&lsc->lsc_aggregators),
712 ("aggregators still active"));
713 KASSERT(lsc->lsc_active_aggregator == NULL,
714 ("aggregator still attached"));
717 callout_drain(&lsc->lsc_transit_callout);
718 callout_drain(&lsc->lsc_callout);
719 taskqueue_drain(taskqueue_swi, &lsc->lsc_qtask);
720 IF_DRAIN(&lsc->lsc_queue);
721 mtx_destroy(&lsc->lsc_queue.ifq_mtx);
728 lacp_init(struct lagg_softc *lgs)
730 struct lacp_softc *lsc = LACP_SOFTC(lgs);
732 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc);
736 lacp_stop(struct lagg_softc *lgs)
738 struct lacp_softc *lsc = LACP_SOFTC(lgs);
740 callout_stop(&lsc->lsc_transit_callout);
741 callout_stop(&lsc->lsc_callout);
745 lacp_select_tx_port(struct lagg_softc *lgs, struct mbuf *m)
747 struct lacp_softc *lsc = LACP_SOFTC(lgs);
748 struct lacp_aggregator *la;
749 struct lacp_port *lp;
753 LAGG_RLOCK_ASSERT(lgs);
755 if (__predict_false(lsc->lsc_suppress_distributing)) {
756 LACP_DPRINTF((NULL, "%s: waiting transit\n", __func__));
760 la = lsc->lsc_active_aggregator;
761 if (__predict_false(la == NULL)) {
762 LACP_DPRINTF((NULL, "%s: no active aggregator\n", __func__));
766 nports = la->la_nports;
767 KASSERT(nports > 0, ("no ports available"));
769 hash = lagg_hashmbuf(m, lsc->lsc_hashkey);
771 lp = TAILQ_FIRST(&la->la_ports);
773 lp = TAILQ_NEXT(lp, lp_dist_q);
776 KASSERT((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0,
777 ("aggregated port is not distributing"));
779 return (lp->lp_lagg);
782 * lacp_suppress_distributing: drop transmit packets for a while
783 * to preserve packet ordering.
787 lacp_suppress_distributing(struct lacp_softc *lsc, struct lacp_aggregator *la)
789 if (lsc->lsc_active_aggregator != la) {
793 LACP_DPRINTF((NULL, "%s\n", __func__));
794 lsc->lsc_suppress_distributing = TRUE;
795 /* XXX should consider collector max delay */
796 callout_reset(&lsc->lsc_transit_callout,
797 LACP_TRANSIT_DELAY * hz / 1000, lacp_transit_expire, lsc);
801 lacp_compare_peerinfo(const struct lacp_peerinfo *a,
802 const struct lacp_peerinfo *b)
804 return (memcmp(a, b, offsetof(struct lacp_peerinfo, lip_state)));
808 lacp_compare_systemid(const struct lacp_systemid *a,
809 const struct lacp_systemid *b)
811 return (memcmp(a, b, sizeof(*a)));
816 lacp_compare_portid(const struct lacp_portid *a,
817 const struct lacp_portid *b)
819 return (memcmp(a, b, sizeof(*a)));
824 lacp_aggregator_bandwidth(struct lacp_aggregator *la)
826 struct lacp_port *lp;
829 lp = TAILQ_FIRST(&la->la_ports);
834 speed = ifmedia_baudrate(lp->lp_media);
835 speed *= la->la_nports;
837 LACP_DPRINTF((lp, "speed 0? media=0x%x nports=%d\n",
838 lp->lp_media, la->la_nports));
845 * lacp_select_active_aggregator: select an aggregator to be used to transmit
846 * packets from lagg(4) interface.
850 lacp_select_active_aggregator(struct lacp_softc *lsc)
852 struct lacp_aggregator *la;
853 struct lacp_aggregator *best_la = NULL;
854 uint64_t best_speed = 0;
855 #if defined(LACP_DEBUG)
856 char buf[LACP_LAGIDSTR_MAX+1];
857 #endif /* defined(LACP_DEBUG) */
859 LACP_DPRINTF((NULL, "%s:\n", __func__));
861 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) {
864 if (la->la_nports == 0) {
868 speed = lacp_aggregator_bandwidth(la);
869 LACP_DPRINTF((NULL, "%s, speed=%jd, nports=%d\n",
870 lacp_format_lagid_aggregator(la, buf, sizeof(buf)),
871 speed, la->la_nports));
872 if (speed > best_speed ||
873 (speed == best_speed &&
874 la == lsc->lsc_active_aggregator)) {
880 KASSERT(best_la == NULL || best_la->la_nports > 0,
881 ("invalid aggregator refcnt"));
882 KASSERT(best_la == NULL || !TAILQ_EMPTY(&best_la->la_ports),
883 ("invalid aggregator list"));
885 #if defined(LACP_DEBUG)
886 if (lsc->lsc_active_aggregator != best_la) {
887 LACP_DPRINTF((NULL, "active aggregator changed\n"));
888 LACP_DPRINTF((NULL, "old %s\n",
889 lacp_format_lagid_aggregator(lsc->lsc_active_aggregator,
892 LACP_DPRINTF((NULL, "active aggregator not changed\n"));
894 LACP_DPRINTF((NULL, "new %s\n",
895 lacp_format_lagid_aggregator(best_la, buf, sizeof(buf))));
896 #endif /* defined(LACP_DEBUG) */
898 if (lsc->lsc_active_aggregator != best_la) {
899 lsc->lsc_active_aggregator = best_la;
901 lacp_suppress_distributing(lsc, best_la);
907 lacp_compose_key(struct lacp_port *lp)
909 struct lagg_port *lgp = lp->lp_lagg;
910 struct lagg_softc *lgs = lgp->lp_lagg;
911 u_int media = lp->lp_media;
914 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) {
917 * non-aggregatable links should have unique keys.
919 * XXX this isn't really unique as if_index is 16 bit.
922 /* bit 0..14: (some bits of) if_index of this port */
923 key = lp->lp_ifp->if_index;
927 u_int subtype = IFM_SUBTYPE(media);
929 KASSERT(IFM_TYPE(media) == IFM_ETHER, ("invalid media type"));
930 KASSERT((media & IFM_FDX) != 0, ("aggregating HDX interface"));
932 /* bit 0..4: IFM_SUBTYPE */
934 /* bit 5..14: (some bits of) if_index of lagg device */
935 key |= 0x7fe0 & ((lgs->sc_ifp->if_index) << 5);
942 lacp_aggregator_addref(struct lacp_softc *lsc, struct lacp_aggregator *la)
944 #if defined(LACP_DEBUG)
945 char buf[LACP_LAGIDSTR_MAX+1];
948 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n",
950 lacp_format_lagid(&la->la_actor, &la->la_partner,
952 la->la_refcnt, la->la_refcnt + 1));
954 KASSERT(la->la_refcnt > 0, ("refcount <= 0"));
956 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcount"));
960 lacp_aggregator_delref(struct lacp_softc *lsc, struct lacp_aggregator *la)
962 #if defined(LACP_DEBUG)
963 char buf[LACP_LAGIDSTR_MAX+1];
966 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n",
968 lacp_format_lagid(&la->la_actor, &la->la_partner,
970 la->la_refcnt, la->la_refcnt - 1));
972 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcnt"));
974 if (la->la_refcnt > 0) {
978 KASSERT(la->la_refcnt == 0, ("refcount not zero"));
979 KASSERT(lsc->lsc_active_aggregator != la, ("aggregator active"));
981 TAILQ_REMOVE(&lsc->lsc_aggregators, la, la_q);
987 * lacp_aggregator_get: allocate an aggregator.
990 static struct lacp_aggregator *
991 lacp_aggregator_get(struct lacp_softc *lsc, struct lacp_port *lp)
993 struct lacp_aggregator *la;
995 la = malloc(sizeof(*la), M_DEVBUF, M_NOWAIT);
999 TAILQ_INIT(&la->la_ports);
1001 TAILQ_INSERT_TAIL(&lsc->lsc_aggregators, la, la_q);
1008 * lacp_fill_aggregator_id: setup a newly allocated aggregator from a port.
1012 lacp_fill_aggregator_id(struct lacp_aggregator *la, const struct lacp_port *lp)
1014 lacp_fill_aggregator_id_peer(&la->la_partner, &lp->lp_partner);
1015 lacp_fill_aggregator_id_peer(&la->la_actor, &lp->lp_actor);
1017 la->la_actor.lip_state = lp->lp_state & LACP_STATE_AGGREGATION;
1021 lacp_fill_aggregator_id_peer(struct lacp_peerinfo *lpi_aggr,
1022 const struct lacp_peerinfo *lpi_port)
1024 memset(lpi_aggr, 0, sizeof(*lpi_aggr));
1025 lpi_aggr->lip_systemid = lpi_port->lip_systemid;
1026 lpi_aggr->lip_key = lpi_port->lip_key;
1030 * lacp_aggregator_is_compatible: check if a port can join to an aggregator.
1034 lacp_aggregator_is_compatible(const struct lacp_aggregator *la,
1035 const struct lacp_port *lp)
1037 if (!(lp->lp_state & LACP_STATE_AGGREGATION) ||
1038 !(lp->lp_partner.lip_state & LACP_STATE_AGGREGATION)) {
1042 if (!(la->la_actor.lip_state & LACP_STATE_AGGREGATION)) {
1046 if (!lacp_peerinfo_is_compatible(&la->la_partner, &lp->lp_partner)) {
1050 if (!lacp_peerinfo_is_compatible(&la->la_actor, &lp->lp_actor)) {
1058 lacp_peerinfo_is_compatible(const struct lacp_peerinfo *a,
1059 const struct lacp_peerinfo *b)
1061 if (memcmp(&a->lip_systemid, &b->lip_systemid,
1062 sizeof(a->lip_systemid))) {
1066 if (memcmp(&a->lip_key, &b->lip_key, sizeof(a->lip_key))) {
1074 lacp_port_enable(struct lacp_port *lp)
1076 struct lagg_port *lgp = lp->lp_lagg;
1078 lp->lp_state |= LACP_STATE_AGGREGATION;
1079 lgp->lp_flags &= ~LAGG_PORT_DISABLED;
1083 lacp_port_disable(struct lacp_port *lp)
1085 struct lagg_port *lgp = lp->lp_lagg;
1087 lacp_set_mux(lp, LACP_MUX_DETACHED);
1089 lp->lp_state &= ~LACP_STATE_AGGREGATION;
1090 lp->lp_selected = LACP_UNSELECTED;
1091 lacp_sm_rx_record_default(lp);
1092 lp->lp_partner.lip_state &= ~LACP_STATE_AGGREGATION;
1093 lp->lp_state &= ~LACP_STATE_EXPIRED;
1094 lgp->lp_flags |= LAGG_PORT_DISABLED;
1098 * lacp_select: select an aggregator. create one if necessary.
1101 lacp_select(struct lacp_port *lp)
1103 struct lacp_softc *lsc = lp->lp_lsc;
1104 struct lacp_aggregator *la;
1105 #if defined(LACP_DEBUG)
1106 char buf[LACP_LAGIDSTR_MAX+1];
1109 if (lp->lp_aggregator) {
1113 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE),
1114 ("timer_wait_while still active"));
1116 LACP_DPRINTF((lp, "port lagid=%s\n",
1117 lacp_format_lagid(&lp->lp_actor, &lp->lp_partner,
1118 buf, sizeof(buf))));
1120 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) {
1121 if (lacp_aggregator_is_compatible(la, lp)) {
1127 la = lacp_aggregator_get(lsc, lp);
1129 LACP_DPRINTF((lp, "aggregator creation failed\n"));
1132 * will retry on the next tick.
1137 lacp_fill_aggregator_id(la, lp);
1138 LACP_DPRINTF((lp, "aggregator created\n"));
1140 LACP_DPRINTF((lp, "compatible aggregator found\n"));
1141 lacp_aggregator_addref(lsc, la);
1144 LACP_DPRINTF((lp, "aggregator lagid=%s\n",
1145 lacp_format_lagid(&la->la_actor, &la->la_partner,
1146 buf, sizeof(buf))));
1148 lp->lp_aggregator = la;
1149 lp->lp_selected = LACP_SELECTED;
1153 * lacp_unselect: finish unselect/detach process.
1157 lacp_unselect(struct lacp_port *lp)
1159 struct lacp_softc *lsc = lp->lp_lsc;
1160 struct lacp_aggregator *la = lp->lp_aggregator;
1162 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE),
1163 ("timer_wait_while still active"));
1169 lp->lp_aggregator = NULL;
1170 lacp_aggregator_delref(lsc, la);
1176 lacp_sm_mux(struct lacp_port *lp)
1178 enum lacp_mux_state new_state;
1180 (lp->lp_partner.lip_state & LACP_STATE_SYNC) != 0;
1181 boolean_t p_collecting =
1182 (lp->lp_partner.lip_state & LACP_STATE_COLLECTING) != 0;
1183 enum lacp_selected selected = lp->lp_selected;
1184 struct lacp_aggregator *la;
1186 /* LACP_DPRINTF((lp, "%s: state %d\n", __func__, lp->lp_mux_state)); */
1189 la = lp->lp_aggregator;
1190 KASSERT(lp->lp_mux_state == LACP_MUX_DETACHED || la != NULL,
1191 ("MUX not detached"));
1192 new_state = lp->lp_mux_state;
1193 switch (lp->lp_mux_state) {
1194 case LACP_MUX_DETACHED:
1195 if (selected != LACP_UNSELECTED) {
1196 new_state = LACP_MUX_WAITING;
1199 case LACP_MUX_WAITING:
1200 KASSERT(la->la_pending > 0 ||
1201 !LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE),
1202 ("timer_wait_while still active"));
1203 if (selected == LACP_SELECTED && la->la_pending == 0) {
1204 new_state = LACP_MUX_ATTACHED;
1205 } else if (selected == LACP_UNSELECTED) {
1206 new_state = LACP_MUX_DETACHED;
1209 case LACP_MUX_ATTACHED:
1210 if (selected == LACP_SELECTED && p_sync) {
1211 new_state = LACP_MUX_COLLECTING;
1212 } else if (selected != LACP_SELECTED) {
1213 new_state = LACP_MUX_DETACHED;
1216 case LACP_MUX_COLLECTING:
1217 if (selected == LACP_SELECTED && p_sync && p_collecting) {
1218 new_state = LACP_MUX_DISTRIBUTING;
1219 } else if (selected != LACP_SELECTED || !p_sync) {
1220 new_state = LACP_MUX_ATTACHED;
1223 case LACP_MUX_DISTRIBUTING:
1224 if (selected != LACP_SELECTED || !p_sync || !p_collecting) {
1225 new_state = LACP_MUX_COLLECTING;
1229 panic("%s: unknown state", __func__);
1232 if (lp->lp_mux_state == new_state) {
1236 lacp_set_mux(lp, new_state);
1241 lacp_set_mux(struct lacp_port *lp, enum lacp_mux_state new_state)
1243 struct lacp_aggregator *la = lp->lp_aggregator;
1245 if (lp->lp_mux_state == new_state) {
1249 switch (new_state) {
1250 case LACP_MUX_DETACHED:
1251 lp->lp_state &= ~LACP_STATE_SYNC;
1252 lacp_disable_distributing(lp);
1253 lacp_disable_collecting(lp);
1254 lacp_sm_assert_ntt(lp);
1256 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE)) {
1257 KASSERT(la->la_pending > 0,
1258 ("timer_wait_while not active"));
1261 LACP_TIMER_DISARM(lp, LACP_TIMER_WAIT_WHILE);
1264 case LACP_MUX_WAITING:
1265 LACP_TIMER_ARM(lp, LACP_TIMER_WAIT_WHILE,
1266 LACP_AGGREGATE_WAIT_TIME);
1269 case LACP_MUX_ATTACHED:
1270 lp->lp_state |= LACP_STATE_SYNC;
1271 lacp_disable_collecting(lp);
1272 lacp_sm_assert_ntt(lp);
1274 case LACP_MUX_COLLECTING:
1275 lacp_enable_collecting(lp);
1276 lacp_disable_distributing(lp);
1277 lacp_sm_assert_ntt(lp);
1279 case LACP_MUX_DISTRIBUTING:
1280 lacp_enable_distributing(lp);
1283 panic("%s: unknown state", __func__);
1286 LACP_DPRINTF((lp, "mux_state %d -> %d\n", lp->lp_mux_state, new_state));
1288 lp->lp_mux_state = new_state;
1292 lacp_sm_mux_timer(struct lacp_port *lp)
1294 struct lacp_aggregator *la = lp->lp_aggregator;
1295 #if defined(LACP_DEBUG)
1296 char buf[LACP_LAGIDSTR_MAX+1];
1299 KASSERT(la->la_pending > 0, ("no pending event"));
1301 LACP_DPRINTF((lp, "%s: aggregator %s, pending %d -> %d\n", __func__,
1302 lacp_format_lagid(&la->la_actor, &la->la_partner,
1304 la->la_pending, la->la_pending - 1));
1309 /* periodic transmit machine */
1312 lacp_sm_ptx_update_timeout(struct lacp_port *lp, uint8_t oldpstate)
1314 if (LACP_STATE_EQ(oldpstate, lp->lp_partner.lip_state,
1315 LACP_STATE_TIMEOUT)) {
1319 LACP_DPRINTF((lp, "partner timeout changed\n"));
1322 * FAST_PERIODIC -> SLOW_PERIODIC
1324 * SLOW_PERIODIC (-> PERIODIC_TX) -> FAST_PERIODIC
1326 * let lacp_sm_ptx_tx_schedule to update timeout.
1329 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC);
1332 * if timeout has been shortened, assert NTT.
1335 if ((lp->lp_partner.lip_state & LACP_STATE_TIMEOUT)) {
1336 lacp_sm_assert_ntt(lp);
1341 lacp_sm_ptx_tx_schedule(struct lacp_port *lp)
1345 if (!(lp->lp_state & LACP_STATE_ACTIVITY) &&
1346 !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) {
1352 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC);
1356 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_PERIODIC)) {
1360 timeout = (lp->lp_partner.lip_state & LACP_STATE_TIMEOUT) ?
1361 LACP_FAST_PERIODIC_TIME : LACP_SLOW_PERIODIC_TIME;
1363 LACP_TIMER_ARM(lp, LACP_TIMER_PERIODIC, timeout);
1367 lacp_sm_ptx_timer(struct lacp_port *lp)
1369 lacp_sm_assert_ntt(lp);
1373 lacp_sm_rx(struct lacp_port *lp, const struct lacpdu *du)
1378 * check LACP_DISABLED first
1381 if (!(lp->lp_state & LACP_STATE_AGGREGATION)) {
1386 * check loopback condition.
1389 if (!lacp_compare_systemid(&du->ldu_actor.lip_systemid,
1390 &lp->lp_actor.lip_systemid)) {
1395 * EXPIRED, DEFAULTED, CURRENT -> CURRENT
1398 lacp_sm_rx_update_selected(lp, du);
1399 lacp_sm_rx_update_ntt(lp, du);
1400 lacp_sm_rx_record_pdu(lp, du);
1402 timeout = (lp->lp_state & LACP_STATE_TIMEOUT) ?
1403 LACP_SHORT_TIMEOUT_TIME : LACP_LONG_TIMEOUT_TIME;
1404 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, timeout);
1406 lp->lp_state &= ~LACP_STATE_EXPIRED;
1409 * kick transmit machine without waiting the next tick.
1416 lacp_sm_rx_set_expired(struct lacp_port *lp)
1418 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC;
1419 lp->lp_partner.lip_state |= LACP_STATE_TIMEOUT;
1420 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, LACP_SHORT_TIMEOUT_TIME);
1421 lp->lp_state |= LACP_STATE_EXPIRED;
1425 lacp_sm_rx_timer(struct lacp_port *lp)
1427 if ((lp->lp_state & LACP_STATE_EXPIRED) == 0) {
1428 /* CURRENT -> EXPIRED */
1429 LACP_DPRINTF((lp, "%s: CURRENT -> EXPIRED\n", __func__));
1430 lacp_sm_rx_set_expired(lp);
1432 /* EXPIRED -> DEFAULTED */
1433 LACP_DPRINTF((lp, "%s: EXPIRED -> DEFAULTED\n", __func__));
1434 lacp_sm_rx_update_default_selected(lp);
1435 lacp_sm_rx_record_default(lp);
1436 lp->lp_state &= ~LACP_STATE_EXPIRED;
1441 lacp_sm_rx_record_pdu(struct lacp_port *lp, const struct lacpdu *du)
1445 #if defined(LACP_DEBUG)
1446 char buf[LACP_STATESTR_MAX+1];
1449 /* LACP_DPRINTF((lp, "%s\n", __func__)); */
1451 oldpstate = lp->lp_partner.lip_state;
1453 active = (du->ldu_actor.lip_state & LACP_STATE_ACTIVITY)
1454 || ((lp->lp_state & LACP_STATE_ACTIVITY) &&
1455 (du->ldu_partner.lip_state & LACP_STATE_ACTIVITY));
1457 lp->lp_partner = du->ldu_actor;
1459 ((LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state,
1460 LACP_STATE_AGGREGATION) &&
1461 !lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner))
1462 || (du->ldu_partner.lip_state & LACP_STATE_AGGREGATION) == 0)) {
1465 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC;
1468 lp->lp_state &= ~LACP_STATE_DEFAULTED;
1470 if (oldpstate != lp->lp_partner.lip_state) {
1471 LACP_DPRINTF((lp, "old pstate %s\n",
1472 lacp_format_state(oldpstate, buf, sizeof(buf))));
1473 LACP_DPRINTF((lp, "new pstate %s\n",
1474 lacp_format_state(lp->lp_partner.lip_state, buf,
1478 lacp_sm_ptx_update_timeout(lp, oldpstate);
1482 lacp_sm_rx_update_ntt(struct lacp_port *lp, const struct lacpdu *du)
1484 /* LACP_DPRINTF((lp, "%s\n", __func__)); */
1486 if (lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner) ||
1487 !LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state,
1488 LACP_STATE_ACTIVITY | LACP_STATE_SYNC | LACP_STATE_AGGREGATION)) {
1489 LACP_DPRINTF((lp, "%s: assert ntt\n", __func__));
1490 lacp_sm_assert_ntt(lp);
1495 lacp_sm_rx_record_default(struct lacp_port *lp)
1499 /* LACP_DPRINTF((lp, "%s\n", __func__)); */
1501 oldpstate = lp->lp_partner.lip_state;
1502 lp->lp_partner = lacp_partner_admin;
1503 lp->lp_state |= LACP_STATE_DEFAULTED;
1504 lacp_sm_ptx_update_timeout(lp, oldpstate);
1508 lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *lp,
1509 const struct lacp_peerinfo *info)
1511 /* LACP_DPRINTF((lp, "%s\n", __func__)); */
1513 if (lacp_compare_peerinfo(&lp->lp_partner, info) ||
1514 !LACP_STATE_EQ(lp->lp_partner.lip_state, info->lip_state,
1515 LACP_STATE_AGGREGATION)) {
1516 lp->lp_selected = LACP_UNSELECTED;
1517 /* mux machine will clean up lp->lp_aggregator */
1522 lacp_sm_rx_update_selected(struct lacp_port *lp, const struct lacpdu *du)
1524 /* LACP_DPRINTF((lp, "%s\n", __func__)); */
1526 lacp_sm_rx_update_selected_from_peerinfo(lp, &du->ldu_actor);
1530 lacp_sm_rx_update_default_selected(struct lacp_port *lp)
1532 /* LACP_DPRINTF((lp, "%s\n", __func__)); */
1534 lacp_sm_rx_update_selected_from_peerinfo(lp, &lacp_partner_admin);
1537 /* transmit machine */
1540 lacp_sm_tx(struct lacp_port *lp)
1544 if (!(lp->lp_state & LACP_STATE_AGGREGATION)
1546 || (!(lp->lp_state & LACP_STATE_ACTIVITY)
1547 && !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY))
1550 lp->lp_flags &= ~LACP_PORT_NTT;
1553 if (!(lp->lp_flags & LACP_PORT_NTT)) {
1557 /* Rate limit to 3 PDUs per LACP_FAST_PERIODIC_TIME */
1558 if (ppsratecheck(&lp->lp_last_lacpdu, &lp->lp_lacpdu_sent,
1559 (3 / LACP_FAST_PERIODIC_TIME)) == 0) {
1560 LACP_DPRINTF((lp, "rate limited pdu\n"));
1564 error = lacp_xmit_lacpdu(lp);
1567 lp->lp_flags &= ~LACP_PORT_NTT;
1569 LACP_DPRINTF((lp, "lacpdu transmit failure, error %d\n",
1575 lacp_sm_assert_ntt(struct lacp_port *lp)
1578 lp->lp_flags |= LACP_PORT_NTT;
1582 lacp_run_timers(struct lacp_port *lp)
1586 for (i = 0; i < LACP_NTIMER; i++) {
1587 KASSERT(lp->lp_timer[i] >= 0,
1588 ("invalid timer value %d", lp->lp_timer[i]));
1589 if (lp->lp_timer[i] == 0) {
1591 } else if (--lp->lp_timer[i] <= 0) {
1592 if (lacp_timer_funcs[i]) {
1593 (*lacp_timer_funcs[i])(lp);
1600 lacp_marker_input(struct lagg_port *lgp, struct mbuf *m)
1602 struct lacp_port *lp = LACP_PORT(lgp);
1603 struct markerdu *mdu;
1606 LAGG_RLOCK_ASSERT(lgp->lp_lagg);
1608 if (__predict_false(lp->lp_flags & LACP_PORT_DETACHING)) {
1612 if (m->m_pkthdr.len != sizeof(*mdu)) {
1616 if ((m->m_flags & M_MCAST) == 0) {
1620 if (m->m_len < sizeof(*mdu)) {
1621 m = m_pullup(m, sizeof(*mdu));
1627 mdu = mtod(m, struct markerdu *);
1629 if (memcmp(&mdu->mdu_eh.ether_dhost,
1630 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) {
1635 KASSERT(mdu->mdu_sph.sph_subtype == SLOWPROTOCOLS_SUBTYPE_MARKER,
1636 ("a very bad kassert!"));
1639 if (mdu->mdu_sph.sph_version != 1) {
1643 switch (mdu->mdu_tlv.tlv_type) {
1644 case MARKER_TYPE_INFO:
1645 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv,
1646 marker_info_tlv_template, TRUE)) {
1649 mdu->mdu_tlv.tlv_type = MARKER_TYPE_RESPONSE;
1650 memcpy(&mdu->mdu_eh.ether_dhost,
1651 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN);
1652 memcpy(&mdu->mdu_eh.ether_shost,
1653 lgp->lp_lladdr, ETHER_ADDR_LEN);
1654 error = lagg_enqueue(lp->lp_ifp, m);
1657 case MARKER_TYPE_RESPONSE:
1658 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv,
1659 marker_response_tlv_template, TRUE)) {
1663 * we are not interested in responses as
1664 * we don't have a marker sender.
1679 tlv_check(const void *p, size_t size, const struct tlvhdr *tlv,
1680 const struct tlv_template *tmpl, boolean_t check_type)
1682 while (/* CONSTCOND */ 1) {
1683 if ((const char *)tlv - (const char *)p + sizeof(*tlv) > size) {
1686 if ((check_type && tlv->tlv_type != tmpl->tmpl_type) ||
1687 tlv->tlv_length != tmpl->tmpl_length) {
1690 if (tmpl->tmpl_type == 0) {
1693 tlv = (const struct tlvhdr *)
1694 ((const char *)tlv + tlv->tlv_length);
1701 #if defined(LACP_DEBUG)
1703 lacp_format_mac(const uint8_t *mac, char *buf, size_t buflen)
1705 snprintf(buf, buflen, "%02X-%02X-%02X-%02X-%02X-%02X",
1717 lacp_format_systemid(const struct lacp_systemid *sysid,
1718 char *buf, size_t buflen)
1720 char macbuf[LACP_MACSTR_MAX+1];
1722 snprintf(buf, buflen, "%04X,%s",
1723 ntohs(sysid->lsi_prio),
1724 lacp_format_mac(sysid->lsi_mac, macbuf, sizeof(macbuf)));
1730 lacp_format_portid(const struct lacp_portid *portid, char *buf, size_t buflen)
1732 snprintf(buf, buflen, "%04X,%04X",
1733 ntohs(portid->lpi_prio),
1734 ntohs(portid->lpi_portno));
1740 lacp_format_partner(const struct lacp_peerinfo *peer, char *buf, size_t buflen)
1742 char sysid[LACP_SYSTEMIDSTR_MAX+1];
1743 char portid[LACP_PORTIDSTR_MAX+1];
1745 snprintf(buf, buflen, "(%s,%04X,%s)",
1746 lacp_format_systemid(&peer->lip_systemid, sysid, sizeof(sysid)),
1747 ntohs(peer->lip_key),
1748 lacp_format_portid(&peer->lip_portid, portid, sizeof(portid)));
1754 lacp_format_lagid(const struct lacp_peerinfo *a,
1755 const struct lacp_peerinfo *b, char *buf, size_t buflen)
1757 char astr[LACP_PARTNERSTR_MAX+1];
1758 char bstr[LACP_PARTNERSTR_MAX+1];
1762 * there's a convention to display small numbered peer
1766 if (lacp_compare_peerinfo(a, b) > 0) {
1767 const struct lacp_peerinfo *t;
1775 snprintf(buf, buflen, "[%s,%s]",
1776 lacp_format_partner(a, astr, sizeof(astr)),
1777 lacp_format_partner(b, bstr, sizeof(bstr)));
1783 lacp_format_lagid_aggregator(const struct lacp_aggregator *la,
1784 char *buf, size_t buflen)
1790 return (lacp_format_lagid(&la->la_actor, &la->la_partner, buf, buflen));
1794 lacp_format_state(uint8_t state, char *buf, size_t buflen)
1796 snprintf(buf, buflen, "%b", state, LACP_STATE_BITS);
1801 lacp_dump_lacpdu(const struct lacpdu *du)
1803 char buf[LACP_PARTNERSTR_MAX+1];
1804 char buf2[LACP_STATESTR_MAX+1];
1806 printf("actor=%s\n",
1807 lacp_format_partner(&du->ldu_actor, buf, sizeof(buf)));
1808 printf("actor.state=%s\n",
1809 lacp_format_state(du->ldu_actor.lip_state, buf2, sizeof(buf2)));
1810 printf("partner=%s\n",
1811 lacp_format_partner(&du->ldu_partner, buf, sizeof(buf)));
1812 printf("partner.state=%s\n",
1813 lacp_format_state(du->ldu_partner.lip_state, buf2, sizeof(buf2)));
1815 printf("maxdelay=%d\n", ntohs(du->ldu_collector.lci_maxdelay));
1819 lacp_dprintf(const struct lacp_port *lp, const char *fmt, ...)
1824 printf("%s: ", lp->lp_ifp->if_xname);