1/* $OpenBSD: trunklacp.c,v 1.32 2019/10/02 22:31:08 dlg Exp $ */ 2/* $NetBSD: ieee8023ad_lacp.c,v 1.3 2005/12/11 12:24:54 christos Exp $ */ 3/* $FreeBSD:ieee8023ad_lacp.c,v 1.15 2008/03/16 19:25:30 thompsa Exp $ */ 4 5/* 6 * Copyright (c)2005 YAMAMOTO Takashi, 7 * Copyright (c)2008 Andrew Thompson <thompsa@FreeBSD.org> 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#include <sys/param.h> 33#include <sys/mbuf.h> 34#include <sys/systm.h> 35#include <sys/malloc.h> 36#include <sys/kernel.h> 37#include <sys/socket.h> 38#include <sys/sockio.h> 39#include <sys/lock.h> 40#include <sys/rwlock.h> 41#include <sys/queue.h> 42#include <sys/task.h> 43#include <sys/timeout.h> 44 45#include <crypto/siphash.h> 46 47#include <net/if.h> 48#include <net/if_media.h> 49 50#include <netinet/in.h> 51#include <netinet/if_ether.h> 52 53#include <net/if_trunk.h> 54#include <net/trunklacp.h> 55 56const u_int8_t ethermulticastaddr_slowprotocols[ETHER_ADDR_LEN] = 57 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x02 }; 58 59const struct tlv_template lacp_info_tlv_template[] = { 60 { LACP_TYPE_ACTORINFO, 61 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) }, 62 { LACP_TYPE_PARTNERINFO, 63 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) }, 64 { LACP_TYPE_COLLECTORINFO, 65 sizeof(struct tlvhdr) + sizeof(struct lacp_collectorinfo) }, 66 { 0, 0 }, 67}; 68 69const struct tlv_template marker_info_tlv_template[] = { 70 { MARKER_TYPE_INFO, 71 sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) }, 72 { 0, 0 }, 73}; 74 75const struct tlv_template marker_response_tlv_template[] = { 76 { MARKER_TYPE_RESPONSE, 77 sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) }, 78 { 0, 0 }, 79}; 80 81typedef void (*lacp_timer_func_t)(struct lacp_port *); 82 83void lacp_default_partner(struct lacp_softc *, 84 struct lacp_peerinfo *); 85void lacp_fill_actorinfo(struct lacp_port *, struct lacp_peerinfo *); 86void lacp_fill_markerinfo(struct lacp_port *, 87 struct lacp_markerinfo *); 88 89u_int64_t lacp_aggregator_bandwidth(struct lacp_aggregator *); 90void lacp_suppress_distributing(struct lacp_softc *, 91 struct lacp_aggregator *); 92void lacp_transit_expire(void *); 93void lacp_update_portmap(struct lacp_softc *); 94void lacp_select_active_aggregator(struct lacp_softc *); 95u_int16_t lacp_compose_key(struct lacp_port *); 96int tlv_check(const void *, size_t, const struct tlvhdr *, 97 const struct tlv_template *, int); 98void lacp_tick(void *); 99 100void lacp_fill_aggregator_id(struct lacp_aggregator *, 101 const struct lacp_port *); 102void lacp_fill_aggregator_id_peer(struct lacp_peerinfo *, 103 const struct lacp_peerinfo *); 104int lacp_aggregator_is_compatible(const struct lacp_aggregator *, 105 const struct lacp_port *); 106int lacp_peerinfo_is_compatible(const struct lacp_peerinfo *, 107 const struct lacp_peerinfo *); 108 109struct lacp_aggregator *lacp_aggregator_get(struct lacp_softc *, 110 struct lacp_port *); 111void lacp_aggregator_addref(struct lacp_softc *, 112 struct lacp_aggregator *); 113void lacp_aggregator_delref(struct lacp_softc *, 114 struct lacp_aggregator *); 115 116/* receive machine */ 117 118void lacp_input_process(void *); 119int lacp_pdu_input(struct lacp_port *, struct mbuf *); 120int lacp_marker_input(struct lacp_port *, struct mbuf *); 121void lacp_sm_rx(struct lacp_port *, const struct lacpdu *); 122void lacp_sm_rx_timer(struct lacp_port *); 123void lacp_sm_rx_set_expired(struct lacp_port *); 124void lacp_sm_rx_update_ntt(struct lacp_port *, 125 const struct lacpdu *); 126void lacp_sm_rx_record_pdu(struct lacp_port *, 127 const struct lacpdu *); 128void lacp_sm_rx_update_selected(struct lacp_port *, 129 const struct lacpdu *); 130void lacp_sm_rx_record_default(struct lacp_port *); 131void lacp_sm_rx_update_default_selected(struct lacp_port *); 132void lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *, 133 const struct lacp_peerinfo *); 134 135/* mux machine */ 136 137void lacp_sm_mux(struct lacp_port *); 138void lacp_set_mux(struct lacp_port *, enum lacp_mux_state); 139void lacp_sm_mux_timer(struct lacp_port *); 140 141/* periodic transmit machine */ 142 143void lacp_sm_ptx_update_timeout(struct lacp_port *, u_int8_t); 144void lacp_sm_ptx_tx_schedule(struct lacp_port *); 145void lacp_sm_ptx_timer(struct lacp_port *); 146 147/* transmit machine */ 148 149void lacp_sm_tx(struct lacp_port *); 150void lacp_sm_assert_ntt(struct lacp_port *); 151 152void lacp_run_timers(struct lacp_port *); 153int lacp_compare_peerinfo(const struct lacp_peerinfo *, 154 const struct lacp_peerinfo *); 155int lacp_compare_systemid(const struct lacp_systemid *, 156 const struct lacp_systemid *); 157void lacp_port_enable(struct lacp_port *); 158void lacp_port_disable(struct lacp_port *); 159void lacp_select(struct lacp_port *); 160void lacp_unselect(struct lacp_port *); 161void lacp_disable_collecting(struct lacp_port *); 162void lacp_enable_collecting(struct lacp_port *); 163void lacp_disable_distributing(struct lacp_port *); 164void lacp_enable_distributing(struct lacp_port *); 165int lacp_xmit_lacpdu(struct lacp_port *); 166int lacp_xmit_marker(struct lacp_port *); 167 168#if defined(LACP_DEBUG) 169void lacp_dump_lacpdu(const struct lacpdu *); 170const char *lacp_format_partner(const struct lacp_peerinfo *, char *, 171 size_t); 172const char *lacp_format_lagid(const struct lacp_peerinfo *, 173 const struct lacp_peerinfo *, char *, size_t); 174const char *lacp_format_lagid_aggregator(const struct lacp_aggregator *, 175 char *, size_t); 176const char *lacp_format_state(u_int8_t, char *, size_t); 177const char *lacp_format_mac(const u_int8_t *, char *, size_t); 178const char *lacp_format_systemid(const struct lacp_systemid *, char *, 179 size_t); 180const char *lacp_format_portid(const struct lacp_portid *, char *, 181 size_t); 182void lacp_dprintf(const struct lacp_port *, const char *, ...) 183 __attribute__((__format__(__printf__, 2, 3))); 184#define LACP_DPRINTF(a) lacp_dprintf a 185#else 186#define LACP_DPRINTF(a) /* nothing */ 187#endif 188 189const lacp_timer_func_t lacp_timer_funcs[LACP_NTIMER] = { 190 [LACP_TIMER_CURRENT_WHILE] = lacp_sm_rx_timer, 191 [LACP_TIMER_PERIODIC] = lacp_sm_ptx_timer, 192 [LACP_TIMER_WAIT_WHILE] = lacp_sm_mux_timer, 193}; 194 195void 196lacp_default_partner(struct lacp_softc *lsc, struct lacp_peerinfo *peer) 197{ 198 peer->lip_systemid.lsi_prio = lsc->lsc_sys_prio; 199 peer->lip_key = 0; 200 peer->lip_portid.lpi_prio = lsc->lsc_port_prio; 201 peer->lip_state = LACP_STATE_SYNC | LACP_STATE_AGGREGATION | 202 LACP_STATE_COLLECTING | LACP_STATE_DISTRIBUTING; 203} 204 205int 206lacp_input(struct trunk_port *tp, struct mbuf *m) 207{ 208 struct lacp_port *lp = LACP_PORT(tp); 209 struct lacp_softc *lsc = lp->lp_lsc; 210 struct lacp_aggregator *la = lp->lp_aggregator; 211 struct ether_header *eh; 212 u_int8_t subtype; 213 214 eh = mtod(m, struct ether_header *); 215 216 if (ntohs(eh->ether_type) == ETHERTYPE_SLOW) { 217 if (m->m_pkthdr.len < (sizeof(*eh) + sizeof(subtype))) 218 return (-1); 219 220 m_copydata(m, sizeof(*eh), sizeof(subtype), &subtype); 221 switch (subtype) { 222 case SLOWPROTOCOLS_SUBTYPE_LACP: 223 case SLOWPROTOCOLS_SUBTYPE_MARKER: 224 mq_enqueue(&lp->lp_mq, m); 225 task_add(systq, &lsc->lsc_input); 226 return (1); 227 } 228 } 229 230 /* 231 * If the port is not collecting or not in the active aggregator then 232 * free and return. 233 */ 234 /* This port is joined to the active aggregator */ 235 if ((lp->lp_state & LACP_STATE_COLLECTING) == 0 || 236 la == NULL || la != lsc->lsc_active_aggregator) { 237 m_freem(m); 238 return (-1); 239 } 240 241 /* Not a subtype we are interested in */ 242 return (0); 243} 244 245void 246lacp_input_process(void *arg) 247{ 248 struct lacp_softc *lsc = arg; 249 struct lacp_port *lp; 250 struct mbuf *m; 251 u_int8_t subtype; 252 253 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { 254 while ((m = mq_dequeue(&lp->lp_mq)) != NULL) { 255 m_copydata(m, sizeof(struct ether_header), 256 sizeof(subtype), &subtype); 257 258 switch (subtype) { 259 case SLOWPROTOCOLS_SUBTYPE_LACP: 260 lacp_pdu_input(lp, m); 261 break; 262 263 case SLOWPROTOCOLS_SUBTYPE_MARKER: 264 lacp_marker_input(lp, m); 265 break; 266 } 267 } 268 } 269} 270 271/* 272 * lacp_pdu_input: process lacpdu 273 */ 274int 275lacp_pdu_input(struct lacp_port *lp, struct mbuf *m) 276{ 277 struct lacpdu *du; 278 int error = 0; 279 280 if (m->m_pkthdr.len != sizeof(*du)) 281 goto bad; 282 283 if (m->m_len < sizeof(*du)) { 284 m = m_pullup(m, sizeof(*du)); 285 if (m == NULL) 286 return (ENOMEM); 287 } 288 du = mtod(m, struct lacpdu *); 289 290 if (memcmp(&du->ldu_eh.ether_dhost, 291 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) 292 goto bad; 293 294 /* 295 * ignore the version for compatibility with 296 * the future protocol revisions. 297 */ 298#if 0 299 if (du->ldu_sph.sph_version != 1) 300 goto bad; 301#endif 302 303 /* 304 * ignore tlv types for compatibility with the 305 * future protocol revisions. (IEEE 802.3-2005 43.4.12) 306 */ 307 if (tlv_check(du, sizeof(*du), &du->ldu_tlv_actor, 308 lacp_info_tlv_template, 0)) 309 goto bad; 310 311#if defined(LACP_DEBUG) 312 LACP_DPRINTF((lp, "lacpdu receive\n")); 313 lacp_dump_lacpdu(du); 314#endif /* defined(LACP_DEBUG) */ 315 316 lacp_sm_rx(lp, du); 317 318 m_freem(m); 319 return (error); 320 321bad: 322 m_freem(m); 323 return (EINVAL); 324} 325 326void 327lacp_fill_actorinfo(struct lacp_port *lp, struct lacp_peerinfo *info) 328{ 329 struct lacp_softc *lsc = lp->lp_lsc; 330 struct trunk_port *tp = lp->lp_trunk; 331 struct trunk_softc *sc = tp->tp_trunk; 332 333 info->lip_systemid.lsi_prio = htons(lsc->lsc_sys_prio); 334 memcpy(&info->lip_systemid.lsi_mac, 335 sc->tr_ac.ac_enaddr, ETHER_ADDR_LEN); 336 info->lip_portid.lpi_prio = htons(lsc->lsc_port_prio); 337 info->lip_portid.lpi_portno = htons(lp->lp_ifp->if_index); 338 info->lip_state = lp->lp_state; 339} 340 341void 342lacp_fill_markerinfo(struct lacp_port *lp, struct lacp_markerinfo *info) 343{ 344 struct ifnet *ifp = lp->lp_ifp; 345 346 /* Fill in the port index and system id (encoded as the MAC) */ 347 info->mi_rq_port = htons(ifp->if_index); 348 memcpy(&info->mi_rq_system, lp->lp_systemid.lsi_mac, ETHER_ADDR_LEN); 349 info->mi_rq_xid = htonl(0); 350} 351 352int 353lacp_xmit_lacpdu(struct lacp_port *lp) 354{ 355 struct lacp_softc *lsc = lp->lp_lsc; 356 struct trunk_port *tp = lp->lp_trunk; 357 struct mbuf *m; 358 struct lacpdu *du; 359 int error; 360 361 m = m_gethdr(M_DONTWAIT, MT_DATA); 362 if (m == NULL) 363 return (ENOMEM); 364 m->m_len = m->m_pkthdr.len = sizeof(*du); 365 m->m_pkthdr.pf.prio = lsc->lsc_ifq_prio; 366 367 du = mtod(m, struct lacpdu *); 368 memset(du, 0, sizeof(*du)); 369 370 memcpy(&du->ldu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 371 ETHER_ADDR_LEN); 372 memcpy(&du->ldu_eh.ether_shost, tp->tp_lladdr, ETHER_ADDR_LEN); 373 du->ldu_eh.ether_type = htons(ETHERTYPE_SLOW); 374 375 du->ldu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_LACP; 376 du->ldu_sph.sph_version = 1; 377 378 TLV_SET(&du->ldu_tlv_actor, LACP_TYPE_ACTORINFO, sizeof(du->ldu_actor)); 379 du->ldu_actor = lp->lp_actor; 380 381 TLV_SET(&du->ldu_tlv_partner, LACP_TYPE_PARTNERINFO, 382 sizeof(du->ldu_partner)); 383 du->ldu_partner = lp->lp_partner; 384 385 TLV_SET(&du->ldu_tlv_collector, LACP_TYPE_COLLECTORINFO, 386 sizeof(du->ldu_collector)); 387 du->ldu_collector.lci_maxdelay = 0; 388 389#if defined(LACP_DEBUG) 390 LACP_DPRINTF((lp, "lacpdu transmit\n")); 391 lacp_dump_lacpdu(du); 392#endif /* defined(LACP_DEBUG) */ 393 394 m->m_flags |= M_MCAST; 395 396 /* 397 * XXX should use higher priority queue. 398 * otherwise network congestion can break aggregation. 399 */ 400 error = if_enqueue(lp->lp_ifp, m); 401 return (error); 402} 403 404int 405lacp_xmit_marker(struct lacp_port *lp) 406{ 407 struct lacp_softc *lsc = lp->lp_lsc; 408 struct trunk_port *tp = lp->lp_trunk; 409 struct mbuf *m; 410 struct markerdu *mdu; 411 int error; 412 413 m = m_gethdr(M_DONTWAIT, MT_DATA); 414 if (m == NULL) 415 return (ENOMEM); 416 m->m_len = m->m_pkthdr.len = sizeof(*mdu); 417 m->m_pkthdr.pf.prio = lsc->lsc_ifq_prio; 418 419 mdu = mtod(m, struct markerdu *); 420 memset(mdu, 0, sizeof(*mdu)); 421 422 memcpy(&mdu->mdu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 423 ETHER_ADDR_LEN); 424 memcpy(&mdu->mdu_eh.ether_shost, tp->tp_lladdr, ETHER_ADDR_LEN); 425 mdu->mdu_eh.ether_type = htons(ETHERTYPE_SLOW); 426 427 mdu->mdu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_MARKER; 428 mdu->mdu_sph.sph_version = 1; 429 430 /* Bump the transaction id and copy over the marker info */ 431 lp->lp_marker.mi_rq_xid = htonl(ntohl(lp->lp_marker.mi_rq_xid) + 1); 432 TLV_SET(&mdu->mdu_tlv, MARKER_TYPE_INFO, sizeof(mdu->mdu_info)); 433 mdu->mdu_info = lp->lp_marker; 434 435 LACP_DPRINTF((lp, "marker transmit, port=%u, sys=%s, id=%u\n", 436 ntohs(mdu->mdu_info.mi_rq_port), 437 ether_sprintf(mdu->mdu_info.mi_rq_system), 438 ntohl(mdu->mdu_info.mi_rq_xid))); 439 440 m->m_flags |= M_MCAST; 441 error = if_enqueue(lp->lp_ifp, m); 442 return (error); 443} 444 445void 446lacp_linkstate(struct trunk_port *tp) 447{ 448 struct lacp_port *lp = LACP_PORT(tp); 449 u_int8_t old_state; 450 u_int16_t old_key; 451 452 old_state = lp->lp_state; 453 old_key = lp->lp_key; 454 455 /* 456 * If the port is not an active full duplex Ethernet link then it can 457 * not be aggregated. 458 */ 459 if (tp->tp_link_state == LINK_STATE_UNKNOWN || 460 tp->tp_link_state == LINK_STATE_FULL_DUPLEX) 461 lacp_port_enable(lp); 462 else 463 lacp_port_disable(lp); 464 465 lp->lp_key = lacp_compose_key(lp); 466 467 if (old_state != lp->lp_state || old_key != lp->lp_key) { 468 LACP_DPRINTF((lp, "-> UNSELECTED\n")); 469 lp->lp_selected = LACP_UNSELECTED; 470 } 471} 472 473void 474lacp_tick(void *arg) 475{ 476 struct lacp_softc *lsc = arg; 477 struct lacp_port *lp; 478 479 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { 480 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) 481 continue; 482 483 lacp_run_timers(lp); 484 485 lacp_select(lp); 486 lacp_sm_mux(lp); 487 lacp_sm_tx(lp); 488 lacp_sm_ptx_tx_schedule(lp); 489 } 490 timeout_add_sec(&lsc->lsc_callout, 1); 491} 492 493int 494lacp_port_create(struct trunk_port *tp) 495{ 496 struct trunk_softc *sc = tp->tp_trunk; 497 struct lacp_softc *lsc = LACP_SOFTC(sc); 498 struct lacp_port *lp; 499 struct ifnet *ifp = tp->tp_if; 500 struct ifreq ifr; 501 int error; 502 503 bzero(&ifr, sizeof(ifr)); 504 ifr.ifr_addr.sa_family = AF_UNSPEC; 505 ifr.ifr_addr.sa_len = ETHER_ADDR_LEN; 506 bcopy(ðermulticastaddr_slowprotocols, 507 ifr.ifr_addr.sa_data, ETHER_ADDR_LEN); 508 509 error = ether_addmulti(&ifr, (struct arpcom *)ifp); 510 if (error && error != ENETRESET) { 511 printf("%s: ADDMULTI failed on %s\n", __func__, tp->tp_ifname); 512 return (error); 513 } 514 515 lp = malloc(sizeof(struct lacp_port), 516 M_DEVBUF, M_NOWAIT|M_ZERO); 517 if (lp == NULL) 518 return (ENOMEM); 519 520 tp->tp_psc = (caddr_t)lp; 521 lp->lp_ifp = ifp; 522 lp->lp_trunk = tp; 523 lp->lp_lsc = lsc; 524 525 mq_init(&lp->lp_mq, 8, IPL_NET); 526 527 LIST_INSERT_HEAD(&lsc->lsc_ports, lp, lp_next); 528 529 lacp_fill_actorinfo(lp, &lp->lp_actor); 530 lacp_fill_markerinfo(lp, &lp->lp_marker); 531 lp->lp_state = 532 (lsc->lsc_mode ? LACP_STATE_ACTIVITY : 0) | 533 (lsc->lsc_timeout ? LACP_STATE_TIMEOUT : 0); 534 lp->lp_aggregator = NULL; 535 lacp_sm_rx_set_expired(lp); 536 537 lacp_linkstate(tp); 538 539 return (0); 540} 541 542void 543lacp_port_destroy(struct trunk_port *tp) 544{ 545 struct lacp_port *lp = LACP_PORT(tp); 546 struct mbuf *m; 547 int i; 548 549 for (i = 0; i < LACP_NTIMER; i++) 550 LACP_TIMER_DISARM(lp, i); 551 552 lacp_disable_collecting(lp); 553 lacp_disable_distributing(lp); 554 lacp_unselect(lp); 555 556 LIST_REMOVE(lp, lp_next); 557 558 while ((m = mq_dequeue(&lp->lp_mq)) != NULL) 559 m_freem(m); 560 561 free(lp, M_DEVBUF, sizeof(*lp)); 562} 563 564void 565lacp_req(struct trunk_softc *sc, caddr_t data) 566{ 567 struct lacp_opreq *req = (struct lacp_opreq *)data; 568 struct lacp_softc *lsc = LACP_SOFTC(sc); 569 struct lacp_aggregator *la = lsc->lsc_active_aggregator; 570 571 bzero(req, sizeof(struct lacp_opreq)); 572 if (la != NULL) { 573 req->actor_prio = ntohs(la->la_actor.lip_systemid.lsi_prio); 574 memcpy(&req->actor_mac, &la->la_actor.lip_systemid.lsi_mac, 575 ETHER_ADDR_LEN); 576 req->actor_key = ntohs(la->la_actor.lip_key); 577 req->actor_portprio = ntohs(la->la_actor.lip_portid.lpi_prio); 578 req->actor_portno = ntohs(la->la_actor.lip_portid.lpi_portno); 579 req->actor_state = la->la_actor.lip_state; 580 581 req->partner_prio = ntohs(la->la_partner.lip_systemid.lsi_prio); 582 memcpy(&req->partner_mac, &la->la_partner.lip_systemid.lsi_mac, 583 ETHER_ADDR_LEN); 584 req->partner_key = ntohs(la->la_partner.lip_key); 585 req->partner_portprio = 586 ntohs(la->la_partner.lip_portid.lpi_prio); 587 req->partner_portno = 588 ntohs(la->la_partner.lip_portid.lpi_portno); 589 req->partner_state = la->la_partner.lip_state; 590 } 591} 592 593u_int 594lacp_port_status(struct trunk_port *lgp) 595{ 596 struct lacp_port *lp = LACP_PORT(lgp); 597 struct lacp_softc *lsc = lp->lp_lsc; 598 struct lacp_aggregator *la = lp->lp_aggregator; 599 u_int flags = 0; 600 601 /* This port is joined to the active aggregator */ 602 if (la != NULL && la == lsc->lsc_active_aggregator) 603 flags |= TRUNK_PORT_ACTIVE; 604 605 if (lp->lp_state & LACP_STATE_COLLECTING) 606 flags |= TRUNK_PORT_COLLECTING; 607 if (lp->lp_state & LACP_STATE_DISTRIBUTING) 608 flags |= TRUNK_PORT_DISTRIBUTING; 609 610 return (flags); 611} 612 613void 614lacp_portreq(struct trunk_port *tp, caddr_t data) 615{ 616 struct lacp_opreq *req = (struct lacp_opreq *)data; 617 struct lacp_port *lp = LACP_PORT(tp); 618 619 req->actor_prio = ntohs(lp->lp_actor.lip_systemid.lsi_prio); 620 memcpy(&req->actor_mac, &lp->lp_actor.lip_systemid.lsi_mac, 621 ETHER_ADDR_LEN); 622 req->actor_key = ntohs(lp->lp_actor.lip_key); 623 req->actor_portprio = ntohs(lp->lp_actor.lip_portid.lpi_prio); 624 req->actor_portno = ntohs(lp->lp_actor.lip_portid.lpi_portno); 625 req->actor_state = lp->lp_actor.lip_state; 626 627 req->partner_prio = ntohs(lp->lp_partner.lip_systemid.lsi_prio); 628 memcpy(&req->partner_mac, &lp->lp_partner.lip_systemid.lsi_mac, 629 ETHER_ADDR_LEN); 630 req->partner_key = ntohs(lp->lp_partner.lip_key); 631 req->partner_portprio = ntohs(lp->lp_partner.lip_portid.lpi_prio); 632 req->partner_portno = ntohs(lp->lp_partner.lip_portid.lpi_portno); 633 req->partner_state = lp->lp_partner.lip_state; 634} 635 636void 637lacp_disable_collecting(struct lacp_port *lp) 638{ 639 LACP_DPRINTF((lp, "collecting disabled\n")); 640 lp->lp_state &= ~LACP_STATE_COLLECTING; 641} 642 643void 644lacp_enable_collecting(struct lacp_port *lp) 645{ 646 LACP_DPRINTF((lp, "collecting enabled\n")); 647 lp->lp_state |= LACP_STATE_COLLECTING; 648} 649 650void 651lacp_disable_distributing(struct lacp_port *lp) 652{ 653 struct lacp_aggregator *la = lp->lp_aggregator; 654 struct lacp_softc *lsc = lp->lp_lsc; 655#if defined(LACP_DEBUG) 656 char buf[LACP_LAGIDSTR_MAX+1]; 657#endif /* defined(LACP_DEBUG) */ 658 659 if (la == NULL || (lp->lp_state & LACP_STATE_DISTRIBUTING) == 0) 660 return; 661 662 KASSERT(!TAILQ_EMPTY(&la->la_ports)); 663 KASSERT(la->la_nports > 0); 664 KASSERT(la->la_refcnt >= la->la_nports); 665 666 LACP_DPRINTF((lp, "disable distributing on aggregator %s, " 667 "nports %d -> %d\n", 668 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 669 la->la_nports, la->la_nports - 1)); 670 671 TAILQ_REMOVE(&la->la_ports, lp, lp_dist_q); 672 la->la_nports--; 673 674 if (lsc->lsc_active_aggregator == la) { 675 lacp_suppress_distributing(lsc, la); 676 lacp_select_active_aggregator(lsc); 677 /* regenerate the port map, the active aggregator has changed */ 678 lacp_update_portmap(lsc); 679 } 680 681 lp->lp_state &= ~LACP_STATE_DISTRIBUTING; 682} 683 684void 685lacp_enable_distributing(struct lacp_port *lp) 686{ 687 struct lacp_aggregator *la = lp->lp_aggregator; 688 struct lacp_softc *lsc = lp->lp_lsc; 689#if defined(LACP_DEBUG) 690 char buf[LACP_LAGIDSTR_MAX+1]; 691#endif /* defined(LACP_DEBUG) */ 692 693 if ((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0) 694 return; 695 696 LACP_DPRINTF((lp, "enable distributing on aggregator %s, " 697 "nports %d -> %d\n", 698 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 699 la->la_nports, la->la_nports + 1)); 700 701 KASSERT(la->la_refcnt > la->la_nports); 702 TAILQ_INSERT_HEAD(&la->la_ports, lp, lp_dist_q); 703 la->la_nports++; 704 705 lp->lp_state |= LACP_STATE_DISTRIBUTING; 706 707 if (lsc->lsc_active_aggregator == la) { 708 lacp_suppress_distributing(lsc, la); 709 lacp_update_portmap(lsc); 710 } else 711 /* try to become the active aggregator */ 712 lacp_select_active_aggregator(lsc); 713} 714 715void 716lacp_transit_expire(void *vp) 717{ 718 struct lacp_softc *lsc = vp; 719 720 LACP_DPRINTF((NULL, "%s\n", __func__)); 721 lsc->lsc_suppress_distributing = 0; 722} 723 724int 725lacp_attach(struct trunk_softc *sc) 726{ 727 struct lacp_softc *lsc; 728 729 lsc = malloc(sizeof(struct lacp_softc), 730 M_DEVBUF, M_NOWAIT|M_ZERO); 731 if (lsc == NULL) 732 return (ENOMEM); 733 734 sc->tr_psc = (caddr_t)lsc; 735 lsc->lsc_softc = sc; 736 737 arc4random_buf(&lsc->lsc_hashkey, sizeof(lsc->lsc_hashkey)); 738 lsc->lsc_active_aggregator = NULL; 739 TAILQ_INIT(&lsc->lsc_aggregators); 740 LIST_INIT(&lsc->lsc_ports); 741 742 /* set default admin values */ 743 lsc->lsc_mode = LACP_DEFAULT_MODE; 744 lsc->lsc_timeout = LACP_DEFAULT_TIMEOUT; 745 lsc->lsc_sys_prio = LACP_DEFAULT_SYSTEM_PRIO; 746 lsc->lsc_port_prio = LACP_DEFAULT_PORT_PRIO; 747 lsc->lsc_ifq_prio = LACP_DEFAULT_IFQ_PRIO; 748 749 timeout_set(&lsc->lsc_transit_callout, lacp_transit_expire, lsc); 750 timeout_set(&lsc->lsc_callout, lacp_tick, lsc); 751 task_set(&lsc->lsc_input, lacp_input_process, lsc); 752 753 /* if the trunk is already up then do the same */ 754 if (sc->tr_ac.ac_if.if_flags & IFF_RUNNING) 755 lacp_init(sc); 756 757 return (0); 758} 759 760int 761lacp_detach(struct trunk_softc *sc) 762{ 763 struct lacp_softc *lsc = LACP_SOFTC(sc); 764 765 KASSERT(TAILQ_EMPTY(&lsc->lsc_aggregators)); 766 KASSERT(lsc->lsc_active_aggregator == NULL); 767 768 sc->tr_psc = NULL; 769 timeout_del(&lsc->lsc_transit_callout); 770 timeout_del(&lsc->lsc_callout); 771 772 free(lsc, M_DEVBUF, sizeof(*lsc)); 773 return (0); 774} 775 776void 777lacp_init(struct trunk_softc *sc) 778{ 779 struct lacp_softc *lsc = LACP_SOFTC(sc); 780 781 timeout_add_sec(&lsc->lsc_callout, 1); 782} 783 784void 785lacp_stop(struct trunk_softc *sc) 786{ 787 struct lacp_softc *lsc = LACP_SOFTC(sc); 788 789 timeout_del(&lsc->lsc_transit_callout); 790 timeout_del(&lsc->lsc_callout); 791} 792 793struct trunk_port * 794lacp_select_tx_port(struct trunk_softc *sc, struct mbuf *m) 795{ 796 struct lacp_softc *lsc = LACP_SOFTC(sc); 797 struct lacp_portmap *pm; 798 struct lacp_port *lp; 799 u_int32_t hash; 800 801 if (__predict_false(lsc->lsc_suppress_distributing)) { 802 LACP_DPRINTF((NULL, "%s: waiting transit\n", __func__)); 803 return (NULL); 804 } 805 806 pm = &lsc->lsc_pmap[lsc->lsc_activemap]; 807 if (pm->pm_count == 0) { 808 LACP_DPRINTF((NULL, "%s: no active aggregator\n", __func__)); 809 return (NULL); 810 } 811 812 hash = trunk_hashmbuf(m, &lsc->lsc_hashkey); 813 hash %= pm->pm_count; 814 lp = pm->pm_map[hash]; 815 816 KASSERT((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0); 817 818 return (lp->lp_trunk); 819} 820 821/* 822 * lacp_suppress_distributing: drop transmit packets for a while 823 * to preserve packet ordering. 824 */ 825void 826lacp_suppress_distributing(struct lacp_softc *lsc, struct lacp_aggregator *la) 827{ 828 struct lacp_port *lp; 829 830 if (lsc->lsc_active_aggregator != la) 831 return; 832 833 LACP_DPRINTF((NULL, "%s\n", __func__)); 834 lsc->lsc_suppress_distributing = 1; 835 836 /* send a marker frame down each port to verify the queues are empty */ 837 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { 838 lp->lp_flags |= LACP_PORT_MARK; 839 lacp_xmit_marker(lp); 840 } 841 842 /* set a timeout for the marker frames */ 843 timeout_add_msec(&lsc->lsc_transit_callout, LACP_TRANSIT_DELAY); 844} 845 846int 847lacp_compare_peerinfo(const struct lacp_peerinfo *a, 848 const struct lacp_peerinfo *b) 849{ 850 return (memcmp(a, b, offsetof(struct lacp_peerinfo, lip_state))); 851} 852 853int 854lacp_compare_systemid(const struct lacp_systemid *a, 855 const struct lacp_systemid *b) 856{ 857 return (memcmp(a, b, sizeof(*a))); 858} 859 860#if 0 /* unused */ 861int 862lacp_compare_portid(const struct lacp_portid *a, 863 const struct lacp_portid *b) 864{ 865 return (memcmp(a, b, sizeof(*a))); 866} 867#endif 868 869u_int64_t 870lacp_aggregator_bandwidth(struct lacp_aggregator *la) 871{ 872 struct lacp_port *lp; 873 u_int64_t speed; 874 875 lp = TAILQ_FIRST(&la->la_ports); 876 if (lp == NULL) 877 return (0); 878 879 speed = lp->lp_ifp->if_baudrate; 880 speed *= la->la_nports; 881 if (speed == 0) { 882 LACP_DPRINTF((lp, "speed 0? media=0x%x nports=%d\n", 883 lp->lp_media, la->la_nports)); 884 } 885 886 return (speed); 887} 888 889/* 890 * lacp_select_active_aggregator: select an aggregator to be used to transmit 891 * packets from trunk(4) interface. 892 */ 893void 894lacp_select_active_aggregator(struct lacp_softc *lsc) 895{ 896 struct lacp_aggregator *la; 897 struct lacp_aggregator *best_la = NULL; 898 u_int64_t best_speed = 0; 899#if defined(LACP_DEBUG) 900 char buf[LACP_LAGIDSTR_MAX+1]; 901#endif /* defined(LACP_DEBUG) */ 902 903 LACP_DPRINTF((NULL, "%s:\n", __func__)); 904 905 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 906 u_int64_t speed; 907 908 if (la->la_nports == 0) 909 continue; 910 911 speed = lacp_aggregator_bandwidth(la); 912 LACP_DPRINTF((NULL, "%s, speed=%jd, nports=%d\n", 913 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 914 speed, la->la_nports)); 915 916 /* 917 * This aggregator is chosen if 918 * the partner has a better system priority 919 * or, the total aggregated speed is higher 920 * or, it is already the chosen aggregator 921 */ 922 if ((best_la == NULL || LACP_SYS_PRI(la->la_partner) < 923 LACP_SYS_PRI(best_la->la_partner)) || 924 speed > best_speed || 925 (speed == best_speed && 926 la == lsc->lsc_active_aggregator)) { 927 best_la = la; 928 best_speed = speed; 929 } 930 } 931 932 KASSERT(best_la == NULL || best_la->la_nports > 0); 933 KASSERT(best_la == NULL || !TAILQ_EMPTY(&best_la->la_ports)); 934 935#if defined(LACP_DEBUG) 936 if (lsc->lsc_active_aggregator != best_la) { 937 LACP_DPRINTF((NULL, "active aggregator changed\n")); 938 LACP_DPRINTF((NULL, "old %s\n", 939 lacp_format_lagid_aggregator(lsc->lsc_active_aggregator, 940 buf, sizeof(buf)))); 941 } else 942 LACP_DPRINTF((NULL, "active aggregator not changed\n")); 943 944 LACP_DPRINTF((NULL, "new %s\n", 945 lacp_format_lagid_aggregator(best_la, buf, sizeof(buf)))); 946#endif /* defined(LACP_DEBUG) */ 947 948 if (lsc->lsc_active_aggregator != best_la) { 949 lsc->lsc_active_aggregator = best_la; 950 lacp_update_portmap(lsc); 951 if (best_la) 952 lacp_suppress_distributing(lsc, best_la); 953 } 954} 955 956/* 957 * Updated the inactive portmap array with the new list of ports and 958 * make it live. 959 */ 960void 961lacp_update_portmap(struct lacp_softc *lsc) 962{ 963 struct lacp_aggregator *la; 964 struct lacp_portmap *p; 965 struct lacp_port *lp; 966 u_int newmap; 967 int i; 968 969 newmap = lsc->lsc_activemap == 0 ? 1 : 0; 970 p = &lsc->lsc_pmap[newmap]; 971 la = lsc->lsc_active_aggregator; 972 bzero(p, sizeof(struct lacp_portmap)); 973 974 if (la != NULL && la->la_nports > 0) { 975 p->pm_count = la->la_nports; 976 i = 0; 977 TAILQ_FOREACH(lp, &la->la_ports, lp_dist_q) 978 p->pm_map[i++] = lp; 979 KASSERT(i == p->pm_count); 980 } 981 982 /* switch the active portmap over */ 983 lsc->lsc_activemap = newmap; 984 LACP_DPRINTF((NULL, "Set table %d with %d ports\n", 985 lsc->lsc_activemap, 986 lsc->lsc_pmap[lsc->lsc_activemap].pm_count)); 987} 988 989u_int16_t 990lacp_compose_key(struct lacp_port *lp) 991{ 992 struct trunk_port *tp = lp->lp_trunk; 993 struct trunk_softc *sc = tp->tp_trunk; 994 u_int64_t speed; 995 u_int16_t key; 996 997 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) { 998 /* bit 0..14: (some bits of) if_index of this port */ 999 key = lp->lp_ifp->if_index; 1000 1001 /* non-aggregatable */ 1002 key |= 0x8000; 1003 } else { 1004 /* bit 0..2: speed indication */ 1005 speed = lp->lp_ifp->if_baudrate; 1006 if (speed == 0) 1007 key = 0; 1008 else if (speed <= IF_Mbps(1)) 1009 key = 1; 1010 else if (speed <= IF_Mbps(10)) 1011 key = 2; 1012 else if (speed <= IF_Mbps(100)) 1013 key = 3; 1014 else if (speed <= IF_Gbps(1)) 1015 key = 4; 1016 else if (speed <= IF_Gbps(10)) 1017 key = 5; 1018 else if (speed <= IF_Gbps(100)) 1019 key = 6; 1020 else 1021 key = 7; 1022 1023 /* bit 3..13: (some bits of) if_index of the trunk device */ 1024 key |= sc->tr_ac.ac_if.if_index << 3; 1025 1026 /* bit 14: the port active flag (includes link state) */ 1027 if (TRUNK_PORTACTIVE(tp)) 1028 key |= 0x4000; 1029 else 1030 key &= ~0x4000; 1031 1032 /* clear the non-aggregatable bit */ 1033 key &= ~0x8000; 1034 } 1035 return (htons(key)); 1036} 1037 1038void 1039lacp_aggregator_addref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1040{ 1041#if defined(LACP_DEBUG) 1042 char buf[LACP_LAGIDSTR_MAX+1]; 1043#endif 1044 1045 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1046 __func__, 1047 lacp_format_lagid(&la->la_actor, &la->la_partner, 1048 buf, sizeof(buf)), 1049 la->la_refcnt, la->la_refcnt + 1)); 1050 1051 KASSERT(la->la_refcnt > 0); 1052 la->la_refcnt++; 1053 KASSERT(la->la_refcnt > la->la_nports); 1054} 1055 1056void 1057lacp_aggregator_delref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1058{ 1059#if defined(LACP_DEBUG) 1060 char buf[LACP_LAGIDSTR_MAX+1]; 1061#endif 1062 1063 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1064 __func__, 1065 lacp_format_lagid(&la->la_actor, &la->la_partner, 1066 buf, sizeof(buf)), 1067 la->la_refcnt, la->la_refcnt - 1)); 1068 1069 KASSERT(la->la_refcnt > la->la_nports); 1070 la->la_refcnt--; 1071 if (la->la_refcnt > 0) 1072 return; 1073 1074 KASSERT(la->la_refcnt == 0); 1075 KASSERT(lsc->lsc_active_aggregator != la); 1076 1077 TAILQ_REMOVE(&lsc->lsc_aggregators, la, la_q); 1078 1079 free(la, M_DEVBUF, sizeof(*la)); 1080} 1081 1082/* 1083 * lacp_aggregator_get: allocate an aggregator. 1084 */ 1085struct lacp_aggregator * 1086lacp_aggregator_get(struct lacp_softc *lsc, struct lacp_port *lp) 1087{ 1088 struct lacp_aggregator *la; 1089 1090 la = malloc(sizeof(*la), M_DEVBUF, M_NOWAIT); 1091 if (la) { 1092 la->la_refcnt = 1; 1093 la->la_nports = 0; 1094 TAILQ_INIT(&la->la_ports); 1095 la->la_pending = 0; 1096 TAILQ_INSERT_TAIL(&lsc->lsc_aggregators, la, la_q); 1097 } 1098 1099 return (la); 1100} 1101 1102/* 1103 * lacp_fill_aggregator_id: setup a newly allocated aggregator from a port. 1104 */ 1105void 1106lacp_fill_aggregator_id(struct lacp_aggregator *la, const struct lacp_port *lp) 1107{ 1108 lacp_fill_aggregator_id_peer(&la->la_partner, &lp->lp_partner); 1109 lacp_fill_aggregator_id_peer(&la->la_actor, &lp->lp_actor); 1110 1111 la->la_actor.lip_state = lp->lp_state & LACP_STATE_AGGREGATION; 1112} 1113 1114void 1115lacp_fill_aggregator_id_peer(struct lacp_peerinfo *lpi_aggr, 1116 const struct lacp_peerinfo *lpi_port) 1117{ 1118 memset(lpi_aggr, 0, sizeof(*lpi_aggr)); 1119 lpi_aggr->lip_systemid = lpi_port->lip_systemid; 1120 lpi_aggr->lip_key = lpi_port->lip_key; 1121} 1122 1123/* 1124 * lacp_aggregator_is_compatible: check if a port can join to an aggregator. 1125 */ 1126int 1127lacp_aggregator_is_compatible(const struct lacp_aggregator *la, 1128 const struct lacp_port *lp) 1129{ 1130 if (!(lp->lp_state & LACP_STATE_AGGREGATION) || 1131 !(lp->lp_partner.lip_state & LACP_STATE_AGGREGATION)) 1132 return (0); 1133 1134 if (!(la->la_actor.lip_state & LACP_STATE_AGGREGATION)) 1135 return (0); 1136 1137 if (!lacp_peerinfo_is_compatible(&la->la_partner, &lp->lp_partner)) 1138 return (0); 1139 1140 if (!lacp_peerinfo_is_compatible(&la->la_actor, &lp->lp_actor)) 1141 return (0); 1142 1143 return (1); 1144} 1145 1146int 1147lacp_peerinfo_is_compatible(const struct lacp_peerinfo *a, 1148 const struct lacp_peerinfo *b) 1149{ 1150 if (memcmp(&a->lip_systemid, &b->lip_systemid, 1151 sizeof(a->lip_systemid))) 1152 return (0); 1153 1154 if (memcmp(&a->lip_key, &b->lip_key, sizeof(a->lip_key))) 1155 return (0); 1156 1157 return (1); 1158} 1159 1160void 1161lacp_port_enable(struct lacp_port *lp) 1162{ 1163 lp->lp_state |= LACP_STATE_AGGREGATION; 1164} 1165 1166void 1167lacp_port_disable(struct lacp_port *lp) 1168{ 1169 lacp_set_mux(lp, LACP_MUX_DETACHED); 1170 1171 lp->lp_state &= ~LACP_STATE_AGGREGATION; 1172 lp->lp_selected = LACP_UNSELECTED; 1173 lacp_sm_rx_record_default(lp); 1174 lp->lp_partner.lip_state &= ~LACP_STATE_AGGREGATION; 1175 lp->lp_state &= ~LACP_STATE_EXPIRED; 1176} 1177 1178/* 1179 * lacp_select: select an aggregator. create one if necessary. 1180 */ 1181void 1182lacp_select(struct lacp_port *lp) 1183{ 1184 struct lacp_softc *lsc = lp->lp_lsc; 1185 struct lacp_aggregator *la; 1186#if defined(LACP_DEBUG) 1187 char buf[LACP_LAGIDSTR_MAX+1]; 1188#endif 1189 1190 if (lp->lp_aggregator) 1191 return; 1192 1193 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE)); 1194 1195 LACP_DPRINTF((lp, "port lagid=%s\n", 1196 lacp_format_lagid(&lp->lp_actor, &lp->lp_partner, 1197 buf, sizeof(buf)))); 1198 1199 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 1200 if (lacp_aggregator_is_compatible(la, lp)) 1201 break; 1202 } 1203 1204 if (la == NULL) { 1205 la = lacp_aggregator_get(lsc, lp); 1206 if (la == NULL) { 1207 LACP_DPRINTF((lp, "aggregator creation failed\n")); 1208 1209 /* 1210 * will retry on the next tick. 1211 */ 1212 1213 return; 1214 } 1215 lacp_fill_aggregator_id(la, lp); 1216 LACP_DPRINTF((lp, "aggregator created\n")); 1217 } else { 1218 LACP_DPRINTF((lp, "compatible aggregator found\n")); 1219 if (la->la_refcnt == LACP_MAX_PORTS) 1220 return; 1221 lacp_aggregator_addref(lsc, la); 1222 } 1223 1224 LACP_DPRINTF((lp, "aggregator lagid=%s\n", 1225 lacp_format_lagid(&la->la_actor, &la->la_partner, 1226 buf, sizeof(buf)))); 1227 1228 lp->lp_aggregator = la; 1229 lp->lp_selected = LACP_SELECTED; 1230} 1231 1232/* 1233 * lacp_unselect: finish unselect/detach process. 1234 */ 1235void 1236lacp_unselect(struct lacp_port *lp) 1237{ 1238 struct lacp_softc *lsc = lp->lp_lsc; 1239 struct lacp_aggregator *la = lp->lp_aggregator; 1240 1241 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE)); 1242 1243 if (la == NULL) 1244 return; 1245 1246 lp->lp_aggregator = NULL; 1247 lacp_aggregator_delref(lsc, la); 1248} 1249 1250/* mux machine */ 1251void 1252lacp_sm_mux(struct lacp_port *lp) 1253{ 1254 enum lacp_mux_state new_state; 1255 int p_sync = 1256 (lp->lp_partner.lip_state & LACP_STATE_SYNC) != 0; 1257 int p_collecting = 1258 (lp->lp_partner.lip_state & LACP_STATE_COLLECTING) != 0; 1259 enum lacp_selected selected = lp->lp_selected; 1260 struct lacp_aggregator *la; 1261 1262 /* LACP_DPRINTF((lp, "%s: state %d\n", __func__, lp->lp_mux_state)); */ 1263 1264re_eval: 1265 la = lp->lp_aggregator; 1266 KASSERT(lp->lp_mux_state == LACP_MUX_DETACHED || la != NULL); 1267 new_state = lp->lp_mux_state; 1268 switch (lp->lp_mux_state) { 1269 case LACP_MUX_DETACHED: 1270 if (selected != LACP_UNSELECTED) 1271 new_state = LACP_MUX_WAITING; 1272 break; 1273 case LACP_MUX_WAITING: 1274 KASSERT(la->la_pending > 0 || 1275 !LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE)); 1276 if (selected == LACP_SELECTED && la->la_pending == 0) 1277 new_state = LACP_MUX_ATTACHED; 1278 else if (selected == LACP_UNSELECTED) 1279 new_state = LACP_MUX_DETACHED; 1280 break; 1281 case LACP_MUX_ATTACHED: 1282 if (selected == LACP_SELECTED && p_sync) 1283 new_state = LACP_MUX_COLLECTING; 1284 else if (selected != LACP_SELECTED) 1285 new_state = LACP_MUX_DETACHED; 1286 break; 1287 case LACP_MUX_COLLECTING: 1288 if (selected == LACP_SELECTED && p_sync && p_collecting) 1289 new_state = LACP_MUX_DISTRIBUTING; 1290 else if (selected != LACP_SELECTED || !p_sync) 1291 new_state = LACP_MUX_ATTACHED; 1292 break; 1293 case LACP_MUX_DISTRIBUTING: 1294 if (selected != LACP_SELECTED || !p_sync || !p_collecting) 1295 new_state = LACP_MUX_COLLECTING; 1296 break; 1297 default: 1298 panic("%s: unknown state", __func__); 1299 } 1300 1301 if (lp->lp_mux_state == new_state) 1302 return; 1303 1304 lacp_set_mux(lp, new_state); 1305 goto re_eval; 1306} 1307 1308void 1309lacp_set_mux(struct lacp_port *lp, enum lacp_mux_state new_state) 1310{ 1311 struct lacp_aggregator *la = lp->lp_aggregator; 1312 1313 if (lp->lp_mux_state == new_state) 1314 return; 1315 1316 switch (new_state) { 1317 case LACP_MUX_DETACHED: 1318 lp->lp_state &= ~LACP_STATE_SYNC; 1319 lacp_disable_distributing(lp); 1320 lacp_disable_collecting(lp); 1321 lacp_sm_assert_ntt(lp); 1322 /* cancel timer */ 1323 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE)) { 1324 KASSERT(la->la_pending > 0); 1325 la->la_pending--; 1326 } 1327 LACP_TIMER_DISARM(lp, LACP_TIMER_WAIT_WHILE); 1328 lacp_unselect(lp); 1329 break; 1330 case LACP_MUX_WAITING: 1331 LACP_TIMER_ARM(lp, LACP_TIMER_WAIT_WHILE, 1332 LACP_AGGREGATE_WAIT_TIME); 1333 la->la_pending++; 1334 break; 1335 case LACP_MUX_ATTACHED: 1336 lp->lp_state |= LACP_STATE_SYNC; 1337 lacp_disable_collecting(lp); 1338 lacp_sm_assert_ntt(lp); 1339 break; 1340 case LACP_MUX_COLLECTING: 1341 lacp_enable_collecting(lp); 1342 lacp_disable_distributing(lp); 1343 lacp_sm_assert_ntt(lp); 1344 break; 1345 case LACP_MUX_DISTRIBUTING: 1346 lacp_enable_distributing(lp); 1347 break; 1348 default: 1349 panic("%s: unknown state", __func__); 1350 } 1351 1352 LACP_DPRINTF((lp, "mux_state %d -> %d\n", lp->lp_mux_state, new_state)); 1353 1354 lp->lp_mux_state = new_state; 1355} 1356 1357void 1358lacp_sm_mux_timer(struct lacp_port *lp) 1359{ 1360 struct lacp_aggregator *la = lp->lp_aggregator; 1361#if defined(LACP_DEBUG) 1362 char buf[LACP_LAGIDSTR_MAX+1]; 1363#endif 1364 1365 KASSERT(la->la_pending > 0); 1366 1367 LACP_DPRINTF((lp, "%s: aggregator %s, pending %d -> %d\n", __func__, 1368 lacp_format_lagid(&la->la_actor, &la->la_partner, 1369 buf, sizeof(buf)), 1370 la->la_pending, la->la_pending - 1)); 1371 1372 la->la_pending--; 1373} 1374 1375/* periodic transmit machine */ 1376void 1377lacp_sm_ptx_update_timeout(struct lacp_port *lp, u_int8_t oldpstate) 1378{ 1379 if (LACP_STATE_EQ(oldpstate, lp->lp_partner.lip_state, 1380 LACP_STATE_TIMEOUT)) 1381 return; 1382 1383 LACP_DPRINTF((lp, "partner timeout changed\n")); 1384 1385 /* 1386 * FAST_PERIODIC -> SLOW_PERIODIC 1387 * or 1388 * SLOW_PERIODIC (-> PERIODIC_TX) -> FAST_PERIODIC 1389 * 1390 * let lacp_sm_ptx_tx_schedule to update timeout. 1391 */ 1392 1393 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1394 1395 /* if timeout has been shortened, assert NTT. */ 1396 if ((lp->lp_partner.lip_state & LACP_STATE_TIMEOUT)) 1397 lacp_sm_assert_ntt(lp); 1398} 1399 1400void 1401lacp_sm_ptx_tx_schedule(struct lacp_port *lp) 1402{ 1403 int timeout; 1404 1405 if (!(lp->lp_state & LACP_STATE_ACTIVITY) && 1406 !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) { 1407 1408 /* NO_PERIODIC */ 1409 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1410 return; 1411 } 1412 1413 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_PERIODIC)) 1414 return; 1415 1416 timeout = (lp->lp_partner.lip_state & LACP_STATE_TIMEOUT) ? 1417 LACP_FAST_PERIODIC_TIME : LACP_SLOW_PERIODIC_TIME; 1418 1419 LACP_TIMER_ARM(lp, LACP_TIMER_PERIODIC, timeout); 1420} 1421 1422void 1423lacp_sm_ptx_timer(struct lacp_port *lp) 1424{ 1425 lacp_sm_assert_ntt(lp); 1426} 1427 1428void 1429lacp_sm_rx(struct lacp_port *lp, const struct lacpdu *du) 1430{ 1431 int timeout; 1432 1433 /* check LACP_DISABLED first */ 1434 if (!(lp->lp_state & LACP_STATE_AGGREGATION)) 1435 return; 1436 1437 /* check loopback condition. */ 1438 if (!lacp_compare_systemid(&du->ldu_actor.lip_systemid, 1439 &lp->lp_actor.lip_systemid)) 1440 return; 1441 1442 /* 1443 * EXPIRED, DEFAULTED, CURRENT -> CURRENT 1444 */ 1445 lacp_sm_rx_update_selected(lp, du); 1446 lacp_sm_rx_update_ntt(lp, du); 1447 lacp_sm_rx_record_pdu(lp, du); 1448 1449 timeout = (lp->lp_state & LACP_STATE_TIMEOUT) ? 1450 LACP_SHORT_TIMEOUT_TIME : LACP_LONG_TIMEOUT_TIME; 1451 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, timeout); 1452 1453 lp->lp_state &= ~LACP_STATE_EXPIRED; 1454 1455 /* kick transmit machine without waiting the next tick. */ 1456 lacp_sm_tx(lp); 1457} 1458 1459void 1460lacp_sm_rx_set_expired(struct lacp_port *lp) 1461{ 1462 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1463 lp->lp_partner.lip_state |= LACP_STATE_TIMEOUT; 1464 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, LACP_SHORT_TIMEOUT_TIME); 1465 lp->lp_state |= LACP_STATE_EXPIRED; 1466} 1467 1468void 1469lacp_sm_rx_timer(struct lacp_port *lp) 1470{ 1471 if ((lp->lp_state & LACP_STATE_EXPIRED) == 0) { 1472 /* CURRENT -> EXPIRED */ 1473 LACP_DPRINTF((lp, "%s: CURRENT -> EXPIRED\n", __func__)); 1474 lacp_sm_rx_set_expired(lp); 1475 } else { 1476 /* EXPIRED -> DEFAULTED */ 1477 LACP_DPRINTF((lp, "%s: EXPIRED -> DEFAULTED\n", __func__)); 1478 lacp_sm_rx_update_default_selected(lp); 1479 lacp_sm_rx_record_default(lp); 1480 lp->lp_state &= ~LACP_STATE_EXPIRED; 1481 } 1482} 1483 1484void 1485lacp_sm_rx_record_pdu(struct lacp_port *lp, const struct lacpdu *du) 1486{ 1487 int active; 1488 u_int8_t oldpstate; 1489#if defined(LACP_DEBUG) 1490 char buf[LACP_STATESTR_MAX+1]; 1491#endif 1492 1493 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1494 1495 oldpstate = lp->lp_partner.lip_state; 1496 1497 active = (du->ldu_actor.lip_state & LACP_STATE_ACTIVITY) 1498 || ((lp->lp_state & LACP_STATE_ACTIVITY) && 1499 (du->ldu_partner.lip_state & LACP_STATE_ACTIVITY)); 1500 1501 lp->lp_partner = du->ldu_actor; 1502 if (active && 1503 ((LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1504 LACP_STATE_AGGREGATION) && 1505 !lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner)) 1506 || (du->ldu_partner.lip_state & LACP_STATE_AGGREGATION) == 0)) { 1507 /* XXX nothing? */ 1508 } else 1509 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1510 1511 lp->lp_state &= ~LACP_STATE_DEFAULTED; 1512 1513 if (oldpstate != lp->lp_partner.lip_state) { 1514 LACP_DPRINTF((lp, "old pstate %s\n", 1515 lacp_format_state(oldpstate, buf, sizeof(buf)))); 1516 LACP_DPRINTF((lp, "new pstate %s\n", 1517 lacp_format_state(lp->lp_partner.lip_state, buf, 1518 sizeof(buf)))); 1519 } 1520 1521 lacp_sm_ptx_update_timeout(lp, oldpstate); 1522} 1523 1524void 1525lacp_sm_rx_update_ntt(struct lacp_port *lp, const struct lacpdu *du) 1526{ 1527 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1528 1529 if (lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner) || 1530 !LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1531 LACP_STATE_ACTIVITY | LACP_STATE_SYNC | LACP_STATE_AGGREGATION)) { 1532 LACP_DPRINTF((lp, "%s: assert ntt\n", __func__)); 1533 lacp_sm_assert_ntt(lp); 1534 } 1535} 1536 1537void 1538lacp_sm_rx_record_default(struct lacp_port *lp) 1539{ 1540 struct lacp_softc *lsc; 1541 u_int8_t oldpstate; 1542 1543 lsc = lp->lp_lsc; 1544 1545 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1546 1547 oldpstate = lp->lp_partner.lip_state; 1548 lacp_default_partner(lsc, &(lp->lp_partner)); 1549 lp->lp_state |= LACP_STATE_DEFAULTED; 1550 lacp_sm_ptx_update_timeout(lp, oldpstate); 1551} 1552 1553void 1554lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *lp, 1555 const struct lacp_peerinfo *info) 1556{ 1557 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1558 1559 if (lacp_compare_peerinfo(&lp->lp_partner, info) || 1560 !LACP_STATE_EQ(lp->lp_partner.lip_state, info->lip_state, 1561 LACP_STATE_AGGREGATION)) { 1562 lp->lp_selected = LACP_UNSELECTED; 1563 /* mux machine will clean up lp->lp_aggregator */ 1564 } 1565} 1566 1567void 1568lacp_sm_rx_update_selected(struct lacp_port *lp, const struct lacpdu *du) 1569{ 1570 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1571 1572 lacp_sm_rx_update_selected_from_peerinfo(lp, &du->ldu_actor); 1573} 1574 1575void 1576lacp_sm_rx_update_default_selected(struct lacp_port *lp) 1577{ 1578 struct lacp_softc *lsc; 1579 struct lacp_peerinfo peer; 1580 1581 lsc = lp->lp_lsc; 1582 lacp_default_partner(lsc, &peer); 1583 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1584 1585 lacp_sm_rx_update_selected_from_peerinfo(lp, &peer); 1586} 1587 1588/* transmit machine */ 1589 1590void 1591lacp_sm_tx(struct lacp_port *lp) 1592{ 1593 int error; 1594 1595 if (!(lp->lp_state & LACP_STATE_AGGREGATION) 1596#if 1 1597 || (!(lp->lp_state & LACP_STATE_ACTIVITY) 1598 && !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) 1599#endif 1600 ) { 1601 lp->lp_flags &= ~LACP_PORT_NTT; 1602 } 1603 1604 if (!(lp->lp_flags & LACP_PORT_NTT)) 1605 return; 1606 1607 /* Rate limit to 3 PDUs per LACP_FAST_PERIODIC_TIME */ 1608 if (ppsratecheck(&lp->lp_last_lacpdu, &lp->lp_lacpdu_sent, 1609 (3 / LACP_FAST_PERIODIC_TIME)) == 0) { 1610 LACP_DPRINTF((lp, "rate limited pdu\n")); 1611 return; 1612 } 1613 1614 error = lacp_xmit_lacpdu(lp); 1615 1616 if (error == 0) 1617 lp->lp_flags &= ~LACP_PORT_NTT; 1618 else 1619 LACP_DPRINTF((lp, "lacpdu transmit failure, error %d\n", 1620 error)); 1621} 1622 1623void 1624lacp_sm_assert_ntt(struct lacp_port *lp) 1625{ 1626 lp->lp_flags |= LACP_PORT_NTT; 1627} 1628 1629void 1630lacp_run_timers(struct lacp_port *lp) 1631{ 1632 int i; 1633 1634 for (i = 0; i < LACP_NTIMER; i++) { 1635 KASSERT(lp->lp_timer[i] >= 0); 1636 if (lp->lp_timer[i] == 0) 1637 continue; 1638 else if (--lp->lp_timer[i] <= 0) { 1639 if (lacp_timer_funcs[i]) 1640 (*lacp_timer_funcs[i])(lp); 1641 } 1642 } 1643} 1644 1645int 1646lacp_marker_input(struct lacp_port *lp, struct mbuf *m) 1647{ 1648 struct lacp_softc *lsc = lp->lp_lsc; 1649 struct trunk_port *tp = lp->lp_trunk; 1650 struct lacp_port *lp2; 1651 struct markerdu *mdu; 1652 int error = 0; 1653 int pending = 0; 1654 1655 if (m->m_pkthdr.len != sizeof(*mdu)) 1656 goto bad; 1657 1658 if ((m->m_flags & M_MCAST) == 0) 1659 goto bad; 1660 1661 if (m->m_len < sizeof(*mdu)) { 1662 m = m_pullup(m, sizeof(*mdu)); 1663 if (m == NULL) 1664 return (ENOMEM); 1665 } 1666 1667 mdu = mtod(m, struct markerdu *); 1668 1669 if (memcmp(&mdu->mdu_eh.ether_dhost, 1670 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) 1671 goto bad; 1672 1673 if (mdu->mdu_sph.sph_version != 1) 1674 goto bad; 1675 1676 switch (mdu->mdu_tlv.tlv_type) { 1677 case MARKER_TYPE_INFO: 1678 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 1679 marker_info_tlv_template, 1)) 1680 goto bad; 1681 1682 mdu->mdu_tlv.tlv_type = MARKER_TYPE_RESPONSE; 1683 memcpy(&mdu->mdu_eh.ether_dhost, 1684 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN); 1685 memcpy(&mdu->mdu_eh.ether_shost, 1686 tp->tp_lladdr, ETHER_ADDR_LEN); 1687 error = if_enqueue(lp->lp_ifp, m); 1688 break; 1689 1690 case MARKER_TYPE_RESPONSE: 1691 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 1692 marker_response_tlv_template, 1)) 1693 goto bad; 1694 1695 LACP_DPRINTF((lp, "marker response, port=%u, sys=%s, id=%u\n", 1696 ntohs(mdu->mdu_info.mi_rq_port), 1697 ether_sprintf(mdu->mdu_info.mi_rq_system), 1698 ntohl(mdu->mdu_info.mi_rq_xid))); 1699 1700 /* Verify that it is the last marker we sent out */ 1701 if (memcmp(&mdu->mdu_info, &lp->lp_marker, 1702 sizeof(struct lacp_markerinfo))) 1703 goto bad; 1704 1705 lp->lp_flags &= ~LACP_PORT_MARK; 1706 1707 if (lsc->lsc_suppress_distributing) { 1708 /* Check if any ports are waiting for a response */ 1709 LIST_FOREACH(lp2, &lsc->lsc_ports, lp_next) { 1710 if (lp2->lp_flags & LACP_PORT_MARK) { 1711 pending = 1; 1712 break; 1713 } 1714 } 1715 1716 if (pending == 0) { 1717 /* All interface queues are clear */ 1718 LACP_DPRINTF((NULL, "queue flush complete\n")); 1719 lsc->lsc_suppress_distributing = 0; 1720 } 1721 } 1722 break; 1723 1724 default: 1725 goto bad; 1726 } 1727 1728 m_freem(m); 1729 return (error); 1730 1731bad: 1732 LACP_DPRINTF((lp, "bad marker frame\n")); 1733 m_freem(m); 1734 return (EINVAL); 1735} 1736 1737int 1738tlv_check(const void *p, size_t size, const struct tlvhdr *tlv, 1739 const struct tlv_template *tmpl, int check_type) 1740{ 1741 while (/* CONSTCOND */ 1) { 1742 if ((const char *)tlv - (const char *)p + sizeof(*tlv) > size) 1743 return (EINVAL); 1744 1745 if ((check_type && tlv->tlv_type != tmpl->tmpl_type) || 1746 tlv->tlv_length != tmpl->tmpl_length) 1747 return (EINVAL); 1748 1749 if (tmpl->tmpl_type == 0) 1750 break; 1751 1752 tlv = (const struct tlvhdr *) 1753 ((const char *)tlv + tlv->tlv_length); 1754 tmpl++; 1755 } 1756 1757 return (0); 1758} 1759 1760#if defined(LACP_DEBUG) 1761const char * 1762lacp_format_mac(const u_int8_t *mac, char *buf, size_t buflen) 1763{ 1764 snprintf(buf, buflen, "%02X-%02X-%02X-%02X-%02X-%02X", 1765 (int)mac[0], 1766 (int)mac[1], 1767 (int)mac[2], 1768 (int)mac[3], 1769 (int)mac[4], 1770 (int)mac[5]); 1771 1772 return (buf); 1773} 1774 1775const char * 1776lacp_format_systemid(const struct lacp_systemid *sysid, 1777 char *buf, size_t buflen) 1778{ 1779 char macbuf[LACP_MACSTR_MAX+1]; 1780 1781 snprintf(buf, buflen, "%04X,%s", 1782 ntohs(sysid->lsi_prio), 1783 lacp_format_mac(sysid->lsi_mac, macbuf, sizeof(macbuf))); 1784 1785 return (buf); 1786} 1787 1788const char * 1789lacp_format_portid(const struct lacp_portid *portid, char *buf, size_t buflen) 1790{ 1791 snprintf(buf, buflen, "%04X,%04X", 1792 ntohs(portid->lpi_prio), 1793 ntohs(portid->lpi_portno)); 1794 1795 return (buf); 1796} 1797 1798const char * 1799lacp_format_partner(const struct lacp_peerinfo *peer, char *buf, size_t buflen) 1800{ 1801 char sysid[LACP_SYSTEMIDSTR_MAX+1]; 1802 char portid[LACP_PORTIDSTR_MAX+1]; 1803 1804 snprintf(buf, buflen, "(%s,%04X,%s)", 1805 lacp_format_systemid(&peer->lip_systemid, sysid, sizeof(sysid)), 1806 ntohs(peer->lip_key), 1807 lacp_format_portid(&peer->lip_portid, portid, sizeof(portid))); 1808 1809 return (buf); 1810} 1811 1812const char * 1813lacp_format_lagid(const struct lacp_peerinfo *a, 1814 const struct lacp_peerinfo *b, char *buf, size_t buflen) 1815{ 1816 char astr[LACP_PARTNERSTR_MAX+1]; 1817 char bstr[LACP_PARTNERSTR_MAX+1]; 1818 1819#if 0 1820 /* 1821 * there's a convention to display small numbered peer 1822 * in the left. 1823 */ 1824 if (lacp_compare_peerinfo(a, b) > 0) { 1825 const struct lacp_peerinfo *t; 1826 1827 t = a; 1828 a = b; 1829 b = t; 1830 } 1831#endif 1832 1833 snprintf(buf, buflen, "[%s,%s]", 1834 lacp_format_partner(a, astr, sizeof(astr)), 1835 lacp_format_partner(b, bstr, sizeof(bstr))); 1836 1837 return (buf); 1838} 1839 1840const char * 1841lacp_format_lagid_aggregator(const struct lacp_aggregator *la, 1842 char *buf, size_t buflen) 1843{ 1844 if (la == NULL) 1845 return ("(none)"); 1846 1847 return (lacp_format_lagid(&la->la_actor, &la->la_partner, buf, buflen)); 1848} 1849 1850const char * 1851lacp_format_state(u_int8_t state, char *buf, size_t buflen) 1852{ 1853 snprintf(buf, buflen, "%b", state, LACP_STATE_BITS); 1854 return (buf); 1855} 1856 1857void 1858lacp_dump_lacpdu(const struct lacpdu *du) 1859{ 1860 char buf[LACP_PARTNERSTR_MAX+1]; 1861 char buf2[LACP_STATESTR_MAX+1]; 1862 1863 printf("actor=%s\n", 1864 lacp_format_partner(&du->ldu_actor, buf, sizeof(buf))); 1865 printf("actor.state=%s\n", 1866 lacp_format_state(du->ldu_actor.lip_state, buf2, sizeof(buf2))); 1867 printf("partner=%s\n", 1868 lacp_format_partner(&du->ldu_partner, buf, sizeof(buf))); 1869 printf("partner.state=%s\n", 1870 lacp_format_state(du->ldu_partner.lip_state, buf2, sizeof(buf2))); 1871 1872 printf("maxdelay=%d\n", ntohs(du->ldu_collector.lci_maxdelay)); 1873} 1874 1875void 1876lacp_dprintf(const struct lacp_port *lp, const char *fmt, ...) 1877{ 1878 va_list va; 1879 1880 if (lp) 1881 printf("%s: ", lp->lp_ifp->if_xname); 1882 1883 va_start(va, fmt); 1884 vprintf(fmt, va); 1885 va_end(va); 1886} 1887#endif 1888