ieee8023ad_lacp.c revision 191692
1/* $NetBSD: ieee8023ad_lacp.c,v 1.3 2005/12/11 12:24:54 christos Exp $ */ 2 3/*- 4 * Copyright (c)2005 YAMAMOTO Takashi, 5 * Copyright (c)2008 Andrew Thompson <thompsa@FreeBSD.org> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#include <sys/cdefs.h> 31__FBSDID("$FreeBSD: head/sys/net/ieee8023ad_lacp.c 191692 2009-04-30 14:25:44Z thompsa $"); 32 33#include <sys/param.h> 34#include <sys/callout.h> 35#include <sys/mbuf.h> 36#include <sys/systm.h> 37#include <sys/malloc.h> 38#include <sys/kernel.h> /* hz */ 39#include <sys/socket.h> /* for net/if.h */ 40#include <sys/sockio.h> 41#include <machine/stdarg.h> 42#include <sys/lock.h> 43#include <sys/rwlock.h> 44 45#include <net/if.h> 46#include <net/if_dl.h> 47#include <net/ethernet.h> 48#include <net/if_media.h> 49#include <net/if_types.h> 50 51#include <net/if_lagg.h> 52#include <net/ieee8023ad_lacp.h> 53 54/* 55 * actor system priority and port priority. 56 * XXX should be configurable. 57 */ 58 59#define LACP_SYSTEM_PRIO 0x8000 60#define LACP_PORT_PRIO 0x8000 61 62const uint8_t ethermulticastaddr_slowprotocols[ETHER_ADDR_LEN] = 63 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x02 }; 64 65static 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) }, 72 { 0, 0 }, 73}; 74 75static const struct tlv_template marker_info_tlv_template[] = { 76 { MARKER_TYPE_INFO, 77 sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) }, 78 { 0, 0 }, 79}; 80 81static const struct tlv_template marker_response_tlv_template[] = { 82 { MARKER_TYPE_RESPONSE, 83 sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) }, 84 { 0, 0 }, 85}; 86 87typedef void (*lacp_timer_func_t)(struct lacp_port *); 88 89static void lacp_fill_actorinfo(struct lacp_port *, struct lacp_peerinfo *); 90static void lacp_fill_markerinfo(struct lacp_port *, 91 struct lacp_markerinfo *); 92 93static uint64_t lacp_aggregator_bandwidth(struct lacp_aggregator *); 94static void lacp_suppress_distributing(struct lacp_softc *, 95 struct lacp_aggregator *); 96static void lacp_transit_expire(void *); 97static void lacp_update_portmap(struct lacp_softc *); 98static void lacp_select_active_aggregator(struct lacp_softc *); 99static uint16_t lacp_compose_key(struct lacp_port *); 100static int tlv_check(const void *, size_t, const struct tlvhdr *, 101 const struct tlv_template *, boolean_t); 102static void lacp_tick(void *); 103 104static void lacp_fill_aggregator_id(struct lacp_aggregator *, 105 const struct lacp_port *); 106static void lacp_fill_aggregator_id_peer(struct lacp_peerinfo *, 107 const struct lacp_peerinfo *); 108static int lacp_aggregator_is_compatible(const struct lacp_aggregator *, 109 const struct lacp_port *); 110static int lacp_peerinfo_is_compatible(const struct lacp_peerinfo *, 111 const struct lacp_peerinfo *); 112 113static struct lacp_aggregator *lacp_aggregator_get(struct lacp_softc *, 114 struct lacp_port *); 115static void lacp_aggregator_addref(struct lacp_softc *, 116 struct lacp_aggregator *); 117static void lacp_aggregator_delref(struct lacp_softc *, 118 struct lacp_aggregator *); 119 120/* receive machine */ 121 122static int lacp_pdu_input(struct lacp_port *, struct mbuf *); 123static int lacp_marker_input(struct lacp_port *, struct mbuf *); 124static void lacp_sm_rx(struct lacp_port *, const struct lacpdu *); 125static void lacp_sm_rx_timer(struct lacp_port *); 126static void lacp_sm_rx_set_expired(struct lacp_port *); 127static void lacp_sm_rx_update_ntt(struct lacp_port *, 128 const struct lacpdu *); 129static void lacp_sm_rx_record_pdu(struct lacp_port *, 130 const struct lacpdu *); 131static void lacp_sm_rx_update_selected(struct lacp_port *, 132 const struct lacpdu *); 133static void lacp_sm_rx_record_default(struct lacp_port *); 134static void lacp_sm_rx_update_default_selected(struct lacp_port *); 135static void lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *, 136 const struct lacp_peerinfo *); 137 138/* mux machine */ 139 140static void lacp_sm_mux(struct lacp_port *); 141static void lacp_set_mux(struct lacp_port *, enum lacp_mux_state); 142static void lacp_sm_mux_timer(struct lacp_port *); 143 144/* periodic transmit machine */ 145 146static void lacp_sm_ptx_update_timeout(struct lacp_port *, uint8_t); 147static void lacp_sm_ptx_tx_schedule(struct lacp_port *); 148static void lacp_sm_ptx_timer(struct lacp_port *); 149 150/* transmit machine */ 151 152static void lacp_sm_tx(struct lacp_port *); 153static void lacp_sm_assert_ntt(struct lacp_port *); 154 155static void lacp_run_timers(struct lacp_port *); 156static int lacp_compare_peerinfo(const struct lacp_peerinfo *, 157 const struct lacp_peerinfo *); 158static int lacp_compare_systemid(const struct lacp_systemid *, 159 const struct lacp_systemid *); 160static void lacp_port_enable(struct lacp_port *); 161static void lacp_port_disable(struct lacp_port *); 162static void lacp_select(struct lacp_port *); 163static void lacp_unselect(struct lacp_port *); 164static void lacp_disable_collecting(struct lacp_port *); 165static void lacp_enable_collecting(struct lacp_port *); 166static void lacp_disable_distributing(struct lacp_port *); 167static void lacp_enable_distributing(struct lacp_port *); 168static int lacp_xmit_lacpdu(struct lacp_port *); 169static int lacp_xmit_marker(struct lacp_port *); 170 171#if defined(LACP_DEBUG) 172static void lacp_dump_lacpdu(const struct lacpdu *); 173static const char *lacp_format_partner(const struct lacp_peerinfo *, char *, 174 size_t); 175static const char *lacp_format_lagid(const struct lacp_peerinfo *, 176 const struct lacp_peerinfo *, char *, size_t); 177static const char *lacp_format_lagid_aggregator(const struct lacp_aggregator *, 178 char *, size_t); 179static const char *lacp_format_state(uint8_t, char *, size_t); 180static const char *lacp_format_mac(const uint8_t *, char *, size_t); 181static const char *lacp_format_systemid(const struct lacp_systemid *, char *, 182 size_t); 183static const char *lacp_format_portid(const struct lacp_portid *, char *, 184 size_t); 185static void lacp_dprintf(const struct lacp_port *, const char *, ...) 186 __attribute__((__format__(__printf__, 2, 3))); 187#define LACP_DPRINTF(a) lacp_dprintf a 188#else 189#define LACP_DPRINTF(a) /* nothing */ 190#endif 191 192/* 193 * partner administration variables. 194 * XXX should be configurable. 195 */ 196 197static const struct lacp_peerinfo lacp_partner_admin = { 198 .lip_systemid = { .lsi_prio = 0xffff }, 199 .lip_portid = { .lpi_prio = 0xffff }, 200#if 1 201 /* optimistic */ 202 .lip_state = LACP_STATE_SYNC | LACP_STATE_AGGREGATION | 203 LACP_STATE_COLLECTING | LACP_STATE_DISTRIBUTING, 204#else 205 /* pessimistic */ 206 .lip_state = 0, 207#endif 208}; 209 210static const lacp_timer_func_t lacp_timer_funcs[LACP_NTIMER] = { 211 [LACP_TIMER_CURRENT_WHILE] = lacp_sm_rx_timer, 212 [LACP_TIMER_PERIODIC] = lacp_sm_ptx_timer, 213 [LACP_TIMER_WAIT_WHILE] = lacp_sm_mux_timer, 214}; 215 216struct mbuf * 217lacp_input(struct lagg_port *lgp, struct mbuf *m) 218{ 219 struct lacp_port *lp = LACP_PORT(lgp); 220 uint8_t subtype; 221 222 if (m->m_pkthdr.len < sizeof(struct ether_header) + sizeof(subtype)) { 223 m_freem(m); 224 return (NULL); 225 } 226 227 m_copydata(m, sizeof(struct ether_header), sizeof(subtype), &subtype); 228 switch (subtype) { 229 case SLOWPROTOCOLS_SUBTYPE_LACP: 230 lacp_pdu_input(lp, m); 231 return (NULL); 232 233 case SLOWPROTOCOLS_SUBTYPE_MARKER: 234 lacp_marker_input(lp, m); 235 return (NULL); 236 } 237 238 /* Not a subtype we are interested in */ 239 return (m); 240} 241 242/* 243 * lacp_pdu_input: process lacpdu 244 */ 245static int 246lacp_pdu_input(struct lacp_port *lp, struct mbuf *m) 247{ 248 struct lacp_softc *lsc = lp->lp_lsc; 249 struct lacpdu *du; 250 int error = 0; 251 252 if (m->m_pkthdr.len != sizeof(*du)) { 253 goto bad; 254 } 255 256 if ((m->m_flags & M_MCAST) == 0) { 257 goto bad; 258 } 259 260 if (m->m_len < sizeof(*du)) { 261 m = m_pullup(m, sizeof(*du)); 262 if (m == NULL) { 263 return (ENOMEM); 264 } 265 } 266 267 du = mtod(m, struct lacpdu *); 268 269 if (memcmp(&du->ldu_eh.ether_dhost, 270 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 271 goto bad; 272 } 273 274 /* 275 * ignore the version for compatibility with 276 * the future protocol revisions. 277 */ 278#if 0 279 if (du->ldu_sph.sph_version != 1) { 280 goto bad; 281 } 282#endif 283 284 /* 285 * ignore tlv types for compatibility with 286 * the future protocol revisions. 287 */ 288 if (tlv_check(du, sizeof(*du), &du->ldu_tlv_actor, 289 lacp_info_tlv_template, FALSE)) { 290 goto bad; 291 } 292 293#if defined(LACP_DEBUG) 294 LACP_DPRINTF((lp, "lacpdu receive\n")); 295 lacp_dump_lacpdu(du); 296#endif /* defined(LACP_DEBUG) */ 297 298 LACP_LOCK(lsc); 299 lacp_sm_rx(lp, du); 300 LACP_UNLOCK(lsc); 301 302 m_freem(m); 303 return (error); 304 305bad: 306 m_freem(m); 307 return (EINVAL); 308} 309 310static void 311lacp_fill_actorinfo(struct lacp_port *lp, struct lacp_peerinfo *info) 312{ 313 struct lagg_port *lgp = lp->lp_lagg; 314 struct lagg_softc *sc = lgp->lp_softc; 315 316 info->lip_systemid.lsi_prio = htons(LACP_SYSTEM_PRIO); 317 memcpy(&info->lip_systemid.lsi_mac, 318 IF_LLADDR(sc->sc_ifp), ETHER_ADDR_LEN); 319 info->lip_portid.lpi_prio = htons(LACP_PORT_PRIO); 320 info->lip_portid.lpi_portno = htons(lp->lp_ifp->if_index); 321 info->lip_state = lp->lp_state; 322} 323 324static void 325lacp_fill_markerinfo(struct lacp_port *lp, struct lacp_markerinfo *info) 326{ 327 struct ifnet *ifp = lp->lp_ifp; 328 329 /* Fill in the port index and system id (encoded as the MAC) */ 330 info->mi_rq_port = htons(ifp->if_index); 331 memcpy(&info->mi_rq_system, lp->lp_systemid.lsi_mac, ETHER_ADDR_LEN); 332 info->mi_rq_xid = htonl(0); 333} 334 335static int 336lacp_xmit_lacpdu(struct lacp_port *lp) 337{ 338 struct lagg_port *lgp = lp->lp_lagg; 339 struct mbuf *m; 340 struct lacpdu *du; 341 int error; 342 343 LACP_LOCK_ASSERT(lp->lp_lsc); 344 345 m = m_gethdr(M_DONTWAIT, MT_DATA); 346 if (m == NULL) { 347 return (ENOMEM); 348 } 349 m->m_len = m->m_pkthdr.len = sizeof(*du); 350 351 du = mtod(m, struct lacpdu *); 352 memset(du, 0, sizeof(*du)); 353 354 memcpy(&du->ldu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 355 ETHER_ADDR_LEN); 356 memcpy(&du->ldu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN); 357 du->ldu_eh.ether_type = htons(ETHERTYPE_SLOW); 358 359 du->ldu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_LACP; 360 du->ldu_sph.sph_version = 1; 361 362 TLV_SET(&du->ldu_tlv_actor, LACP_TYPE_ACTORINFO, sizeof(du->ldu_actor)); 363 du->ldu_actor = lp->lp_actor; 364 365 TLV_SET(&du->ldu_tlv_partner, LACP_TYPE_PARTNERINFO, 366 sizeof(du->ldu_partner)); 367 du->ldu_partner = lp->lp_partner; 368 369 TLV_SET(&du->ldu_tlv_collector, LACP_TYPE_COLLECTORINFO, 370 sizeof(du->ldu_collector)); 371 du->ldu_collector.lci_maxdelay = 0; 372 373#if defined(LACP_DEBUG) 374 LACP_DPRINTF((lp, "lacpdu transmit\n")); 375 lacp_dump_lacpdu(du); 376#endif /* defined(LACP_DEBUG) */ 377 378 m->m_flags |= M_MCAST; 379 380 /* 381 * XXX should use higher priority queue. 382 * otherwise network congestion can break aggregation. 383 */ 384 385 error = lagg_enqueue(lp->lp_ifp, m); 386 return (error); 387} 388 389static int 390lacp_xmit_marker(struct lacp_port *lp) 391{ 392 struct lagg_port *lgp = lp->lp_lagg; 393 struct mbuf *m; 394 struct markerdu *mdu; 395 int error; 396 397 LACP_LOCK_ASSERT(lp->lp_lsc); 398 399 m = m_gethdr(M_DONTWAIT, MT_DATA); 400 if (m == NULL) { 401 return (ENOMEM); 402 } 403 m->m_len = m->m_pkthdr.len = sizeof(*mdu); 404 405 mdu = mtod(m, struct markerdu *); 406 memset(mdu, 0, sizeof(*mdu)); 407 408 memcpy(&mdu->mdu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 409 ETHER_ADDR_LEN); 410 memcpy(&mdu->mdu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN); 411 mdu->mdu_eh.ether_type = htons(ETHERTYPE_SLOW); 412 413 mdu->mdu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_MARKER; 414 mdu->mdu_sph.sph_version = 1; 415 416 /* Bump the transaction id and copy over the marker info */ 417 lp->lp_marker.mi_rq_xid = htonl(ntohl(lp->lp_marker.mi_rq_xid) + 1); 418 TLV_SET(&mdu->mdu_tlv, MARKER_TYPE_INFO, sizeof(mdu->mdu_info)); 419 mdu->mdu_info = lp->lp_marker; 420 421 LACP_DPRINTF((lp, "marker transmit, port=%u, sys=%6D, id=%u\n", 422 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, ":", 423 ntohl(mdu->mdu_info.mi_rq_xid))); 424 425 m->m_flags |= M_MCAST; 426 error = lagg_enqueue(lp->lp_ifp, m); 427 return (error); 428} 429 430void 431lacp_linkstate(struct lagg_port *lgp) 432{ 433 struct lacp_port *lp = LACP_PORT(lgp); 434 struct lacp_softc *lsc = lp->lp_lsc; 435 struct ifnet *ifp = lgp->lp_ifp; 436 struct ifmediareq ifmr; 437 int error = 0; 438 u_int media; 439 uint8_t old_state; 440 uint16_t old_key; 441 442 bzero((char *)&ifmr, sizeof(ifmr)); 443 error = (*ifp->if_ioctl)(ifp, SIOCGIFMEDIA, (caddr_t)&ifmr); 444 if (error != 0) 445 return; 446 447 LACP_LOCK(lsc); 448 media = ifmr.ifm_active; 449 LACP_DPRINTF((lp, "media changed 0x%x -> 0x%x, ether = %d, fdx = %d, " 450 "link = %d\n", lp->lp_media, media, IFM_TYPE(media) == IFM_ETHER, 451 (media & IFM_FDX) != 0, ifp->if_link_state == LINK_STATE_UP)); 452 old_state = lp->lp_state; 453 old_key = lp->lp_key; 454 455 lp->lp_media = media; 456 /* 457 * If the port is not an active full duplex Ethernet link then it can 458 * not be aggregated. 459 */ 460 if (IFM_TYPE(media) != IFM_ETHER || (media & IFM_FDX) == 0 || 461 ifp->if_link_state != LINK_STATE_UP) { 462 lacp_port_disable(lp); 463 } else { 464 lacp_port_enable(lp); 465 } 466 lp->lp_key = lacp_compose_key(lp); 467 468 if (old_state != lp->lp_state || old_key != lp->lp_key) { 469 LACP_DPRINTF((lp, "-> UNSELECTED\n")); 470 lp->lp_selected = LACP_UNSELECTED; 471 } 472 LACP_UNLOCK(lsc); 473} 474 475static void 476lacp_tick(void *arg) 477{ 478 struct lacp_softc *lsc = arg; 479 struct lacp_port *lp; 480 481 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { 482 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) 483 continue; 484 485 lacp_run_timers(lp); 486 487 lacp_select(lp); 488 lacp_sm_mux(lp); 489 lacp_sm_tx(lp); 490 lacp_sm_ptx_tx_schedule(lp); 491 } 492 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc); 493} 494 495int 496lacp_port_create(struct lagg_port *lgp) 497{ 498 struct lagg_softc *sc = lgp->lp_softc; 499 struct lacp_softc *lsc = LACP_SOFTC(sc); 500 struct lacp_port *lp; 501 struct ifnet *ifp = lgp->lp_ifp; 502 struct sockaddr_dl sdl; 503 struct ifmultiaddr *rifma = NULL; 504 int error; 505 506 boolean_t active = TRUE; /* XXX should be configurable */ 507 boolean_t fast = FALSE; /* XXX should be configurable */ 508 509 bzero((char *)&sdl, sizeof(sdl)); 510 sdl.sdl_len = sizeof(sdl); 511 sdl.sdl_family = AF_LINK; 512 sdl.sdl_index = ifp->if_index; 513 sdl.sdl_type = IFT_ETHER; 514 sdl.sdl_alen = ETHER_ADDR_LEN; 515 516 bcopy(ðermulticastaddr_slowprotocols, 517 LLADDR(&sdl), ETHER_ADDR_LEN); 518 error = if_addmulti(ifp, (struct sockaddr *)&sdl, &rifma); 519 if (error) { 520 printf("%s: ADDMULTI failed on %s\n", __func__, lgp->lp_ifname); 521 return (error); 522 } 523 524 lp = malloc(sizeof(struct lacp_port), 525 M_DEVBUF, M_NOWAIT|M_ZERO); 526 if (lp == NULL) 527 return (ENOMEM); 528 529 LACP_LOCK(lsc); 530 lgp->lp_psc = (caddr_t)lp; 531 lp->lp_ifp = ifp; 532 lp->lp_lagg = lgp; 533 lp->lp_lsc = lsc; 534 lp->lp_ifma = rifma; 535 536 LIST_INSERT_HEAD(&lsc->lsc_ports, lp, lp_next); 537 538 lacp_fill_actorinfo(lp, &lp->lp_actor); 539 lacp_fill_markerinfo(lp, &lp->lp_marker); 540 lp->lp_state = 541 (active ? LACP_STATE_ACTIVITY : 0) | 542 (fast ? LACP_STATE_TIMEOUT : 0); 543 lp->lp_aggregator = NULL; 544 lacp_sm_rx_set_expired(lp); 545 LACP_UNLOCK(lsc); 546 lacp_linkstate(lgp); 547 548 return (0); 549} 550 551void 552lacp_port_destroy(struct lagg_port *lgp) 553{ 554 struct lacp_port *lp = LACP_PORT(lgp); 555 struct lacp_softc *lsc = lp->lp_lsc; 556 int i; 557 558 LACP_LOCK(lsc); 559 for (i = 0; i < LACP_NTIMER; i++) { 560 LACP_TIMER_DISARM(lp, i); 561 } 562 563 lacp_disable_collecting(lp); 564 lacp_disable_distributing(lp); 565 lacp_unselect(lp); 566 567 /* The address may have already been removed by if_purgemaddrs() */ 568 if (!lgp->lp_detaching) 569 if_delmulti_ifma(lp->lp_ifma); 570 571 LIST_REMOVE(lp, lp_next); 572 LACP_UNLOCK(lsc); 573 free(lp, M_DEVBUF); 574} 575 576void 577lacp_req(struct lagg_softc *sc, caddr_t data) 578{ 579 struct lacp_opreq *req = (struct lacp_opreq *)data; 580 struct lacp_softc *lsc = LACP_SOFTC(sc); 581 struct lacp_aggregator *la = lsc->lsc_active_aggregator; 582 583 LACP_LOCK(lsc); 584 bzero(req, sizeof(struct lacp_opreq)); 585 if (la != NULL) { 586 req->actor_prio = ntohs(la->la_actor.lip_systemid.lsi_prio); 587 memcpy(&req->actor_mac, &la->la_actor.lip_systemid.lsi_mac, 588 ETHER_ADDR_LEN); 589 req->actor_key = ntohs(la->la_actor.lip_key); 590 req->actor_portprio = ntohs(la->la_actor.lip_portid.lpi_prio); 591 req->actor_portno = ntohs(la->la_actor.lip_portid.lpi_portno); 592 req->actor_state = la->la_actor.lip_state; 593 594 req->partner_prio = ntohs(la->la_partner.lip_systemid.lsi_prio); 595 memcpy(&req->partner_mac, &la->la_partner.lip_systemid.lsi_mac, 596 ETHER_ADDR_LEN); 597 req->partner_key = ntohs(la->la_partner.lip_key); 598 req->partner_portprio = ntohs(la->la_partner.lip_portid.lpi_prio); 599 req->partner_portno = ntohs(la->la_partner.lip_portid.lpi_portno); 600 req->partner_state = la->la_partner.lip_state; 601 } 602 LACP_UNLOCK(lsc); 603} 604 605void 606lacp_portreq(struct lagg_port *lgp, caddr_t data) 607{ 608 struct lacp_opreq *req = (struct lacp_opreq *)data; 609 struct lacp_port *lp = LACP_PORT(lgp); 610 struct lacp_softc *lsc = lp->lp_lsc; 611 612 LACP_LOCK(lsc); 613 req->actor_prio = ntohs(lp->lp_actor.lip_systemid.lsi_prio); 614 memcpy(&req->actor_mac, &lp->lp_actor.lip_systemid.lsi_mac, 615 ETHER_ADDR_LEN); 616 req->actor_key = ntohs(lp->lp_actor.lip_key); 617 req->actor_portprio = ntohs(lp->lp_actor.lip_portid.lpi_prio); 618 req->actor_portno = ntohs(lp->lp_actor.lip_portid.lpi_portno); 619 req->actor_state = lp->lp_actor.lip_state; 620 621 req->partner_prio = ntohs(lp->lp_partner.lip_systemid.lsi_prio); 622 memcpy(&req->partner_mac, &lp->lp_partner.lip_systemid.lsi_mac, 623 ETHER_ADDR_LEN); 624 req->partner_key = ntohs(lp->lp_partner.lip_key); 625 req->partner_portprio = ntohs(lp->lp_partner.lip_portid.lpi_prio); 626 req->partner_portno = ntohs(lp->lp_partner.lip_portid.lpi_portno); 627 req->partner_state = lp->lp_partner.lip_state; 628 LACP_UNLOCK(lsc); 629} 630 631static void 632lacp_disable_collecting(struct lacp_port *lp) 633{ 634 LACP_DPRINTF((lp, "collecting disabled\n")); 635 lp->lp_state &= ~LACP_STATE_COLLECTING; 636} 637 638static void 639lacp_enable_collecting(struct lacp_port *lp) 640{ 641 LACP_DPRINTF((lp, "collecting enabled\n")); 642 lp->lp_state |= LACP_STATE_COLLECTING; 643} 644 645static void 646lacp_disable_distributing(struct lacp_port *lp) 647{ 648 struct lacp_aggregator *la = lp->lp_aggregator; 649 struct lacp_softc *lsc = lp->lp_lsc; 650#if defined(LACP_DEBUG) 651 char buf[LACP_LAGIDSTR_MAX+1]; 652#endif /* defined(LACP_DEBUG) */ 653 654 LACP_LOCK_ASSERT(lsc); 655 656 if (la == NULL || (lp->lp_state & LACP_STATE_DISTRIBUTING) == 0) { 657 return; 658 } 659 660 KASSERT(!TAILQ_EMPTY(&la->la_ports), ("no aggregator ports")); 661 KASSERT(la->la_nports > 0, ("nports invalid (%d)", la->la_nports)); 662 KASSERT(la->la_refcnt >= la->la_nports, ("aggregator refcnt invalid")); 663 664 LACP_DPRINTF((lp, "disable distributing on aggregator %s, " 665 "nports %d -> %d\n", 666 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 667 la->la_nports, la->la_nports - 1)); 668 669 TAILQ_REMOVE(&la->la_ports, lp, lp_dist_q); 670 la->la_nports--; 671 672 if (lsc->lsc_active_aggregator == la) { 673 lacp_suppress_distributing(lsc, la); 674 lacp_select_active_aggregator(lsc); 675 /* regenerate the port map, the active aggregator has changed */ 676 lacp_update_portmap(lsc); 677 } 678 679 lp->lp_state &= ~LACP_STATE_DISTRIBUTING; 680} 681 682static void 683lacp_enable_distributing(struct lacp_port *lp) 684{ 685 struct lacp_aggregator *la = lp->lp_aggregator; 686 struct lacp_softc *lsc = lp->lp_lsc; 687#if defined(LACP_DEBUG) 688 char buf[LACP_LAGIDSTR_MAX+1]; 689#endif /* defined(LACP_DEBUG) */ 690 691 LACP_LOCK_ASSERT(lsc); 692 693 if ((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0) { 694 return; 695 } 696 697 LACP_DPRINTF((lp, "enable distributing on aggregator %s, " 698 "nports %d -> %d\n", 699 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 700 la->la_nports, la->la_nports + 1)); 701 702 KASSERT(la->la_refcnt > la->la_nports, ("aggregator refcnt invalid")); 703 TAILQ_INSERT_HEAD(&la->la_ports, lp, lp_dist_q); 704 la->la_nports++; 705 706 lp->lp_state |= LACP_STATE_DISTRIBUTING; 707 708 if (lsc->lsc_active_aggregator == la) { 709 lacp_suppress_distributing(lsc, la); 710 lacp_update_portmap(lsc); 711 } else 712 /* try to become the active aggregator */ 713 lacp_select_active_aggregator(lsc); 714} 715 716static void 717lacp_transit_expire(void *vp) 718{ 719 struct lacp_softc *lsc = vp; 720 721 LACP_LOCK_ASSERT(lsc); 722 723 LACP_DPRINTF((NULL, "%s\n", __func__)); 724 lsc->lsc_suppress_distributing = FALSE; 725} 726 727int 728lacp_attach(struct lagg_softc *sc) 729{ 730 struct lacp_softc *lsc; 731 732 lsc = malloc(sizeof(struct lacp_softc), 733 M_DEVBUF, M_NOWAIT|M_ZERO); 734 if (lsc == NULL) 735 return (ENOMEM); 736 737 sc->sc_psc = (caddr_t)lsc; 738 lsc->lsc_softc = sc; 739 740 lsc->lsc_hashkey = arc4random(); 741 lsc->lsc_active_aggregator = NULL; 742 LACP_LOCK_INIT(lsc); 743 TAILQ_INIT(&lsc->lsc_aggregators); 744 LIST_INIT(&lsc->lsc_ports); 745 746 callout_init_mtx(&lsc->lsc_transit_callout, &lsc->lsc_mtx, 0); 747 callout_init_mtx(&lsc->lsc_callout, &lsc->lsc_mtx, 0); 748 749 /* if the lagg is already up then do the same */ 750 if (sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING) 751 lacp_init(sc); 752 753 return (0); 754} 755 756int 757lacp_detach(struct lagg_softc *sc) 758{ 759 struct lacp_softc *lsc = LACP_SOFTC(sc); 760 761 KASSERT(TAILQ_EMPTY(&lsc->lsc_aggregators), 762 ("aggregators still active")); 763 KASSERT(lsc->lsc_active_aggregator == NULL, 764 ("aggregator still attached")); 765 766 sc->sc_psc = NULL; 767 callout_drain(&lsc->lsc_transit_callout); 768 callout_drain(&lsc->lsc_callout); 769 770 LACP_LOCK_DESTROY(lsc); 771 free(lsc, M_DEVBUF); 772 return (0); 773} 774 775void 776lacp_init(struct lagg_softc *sc) 777{ 778 struct lacp_softc *lsc = LACP_SOFTC(sc); 779 780 LACP_LOCK(lsc); 781 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc); 782 LACP_UNLOCK(lsc); 783} 784 785void 786lacp_stop(struct lagg_softc *sc) 787{ 788 struct lacp_softc *lsc = LACP_SOFTC(sc); 789 790 LACP_LOCK(lsc); 791 callout_stop(&lsc->lsc_transit_callout); 792 callout_stop(&lsc->lsc_callout); 793 LACP_UNLOCK(lsc); 794} 795 796struct lagg_port * 797lacp_select_tx_port(struct lagg_softc *sc, struct mbuf *m) 798{ 799 struct lacp_softc *lsc = LACP_SOFTC(sc); 800 struct lacp_portmap *pm; 801 struct lacp_port *lp; 802 uint32_t hash; 803 804 if (__predict_false(lsc->lsc_suppress_distributing)) { 805 LACP_DPRINTF((NULL, "%s: waiting transit\n", __func__)); 806 return (NULL); 807 } 808 809 pm = &lsc->lsc_pmap[lsc->lsc_activemap]; 810 if (pm->pm_count == 0) { 811 LACP_DPRINTF((NULL, "%s: no active aggregator\n", __func__)); 812 return (NULL); 813 } 814 815 if (m->m_flags & M_FLOWID) 816 hash = m->m_pkthdr.flowid; 817 else 818 hash = lagg_hashmbuf(m, lsc->lsc_hashkey); 819 hash %= pm->pm_count; 820 lp = pm->pm_map[hash]; 821 822 KASSERT((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0, 823 ("aggregated port is not distributing")); 824 825 return (lp->lp_lagg); 826} 827/* 828 * lacp_suppress_distributing: drop transmit packets for a while 829 * to preserve packet ordering. 830 */ 831 832static void 833lacp_suppress_distributing(struct lacp_softc *lsc, struct lacp_aggregator *la) 834{ 835 struct lacp_port *lp; 836 837 if (lsc->lsc_active_aggregator != la) { 838 return; 839 } 840 841 LACP_DPRINTF((NULL, "%s\n", __func__)); 842 lsc->lsc_suppress_distributing = TRUE; 843 844 /* send a marker frame down each port to verify the queues are empty */ 845 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { 846 lp->lp_flags |= LACP_PORT_MARK; 847 lacp_xmit_marker(lp); 848 } 849 850 /* set a timeout for the marker frames */ 851 callout_reset(&lsc->lsc_transit_callout, 852 LACP_TRANSIT_DELAY * hz / 1000, lacp_transit_expire, lsc); 853} 854 855static int 856lacp_compare_peerinfo(const struct lacp_peerinfo *a, 857 const struct lacp_peerinfo *b) 858{ 859 return (memcmp(a, b, offsetof(struct lacp_peerinfo, lip_state))); 860} 861 862static int 863lacp_compare_systemid(const struct lacp_systemid *a, 864 const struct lacp_systemid *b) 865{ 866 return (memcmp(a, b, sizeof(*a))); 867} 868 869#if 0 /* unused */ 870static int 871lacp_compare_portid(const struct lacp_portid *a, 872 const struct lacp_portid *b) 873{ 874 return (memcmp(a, b, sizeof(*a))); 875} 876#endif 877 878static uint64_t 879lacp_aggregator_bandwidth(struct lacp_aggregator *la) 880{ 881 struct lacp_port *lp; 882 uint64_t speed; 883 884 lp = TAILQ_FIRST(&la->la_ports); 885 if (lp == NULL) { 886 return (0); 887 } 888 889 speed = ifmedia_baudrate(lp->lp_media); 890 speed *= la->la_nports; 891 if (speed == 0) { 892 LACP_DPRINTF((lp, "speed 0? media=0x%x nports=%d\n", 893 lp->lp_media, la->la_nports)); 894 } 895 896 return (speed); 897} 898 899/* 900 * lacp_select_active_aggregator: select an aggregator to be used to transmit 901 * packets from lagg(4) interface. 902 */ 903 904static void 905lacp_select_active_aggregator(struct lacp_softc *lsc) 906{ 907 struct lagg_softc *sc = lsc->lsc_softc; 908 struct lacp_aggregator *la; 909 struct lacp_aggregator *best_la = NULL; 910 uint64_t best_speed = 0; 911#if defined(LACP_DEBUG) 912 char buf[LACP_LAGIDSTR_MAX+1]; 913#endif /* defined(LACP_DEBUG) */ 914 915 LACP_DPRINTF((NULL, "%s:\n", __func__)); 916 917 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 918 uint64_t speed; 919 920 if (la->la_nports == 0) { 921 continue; 922 } 923 924 speed = lacp_aggregator_bandwidth(la); 925 LACP_DPRINTF((NULL, "%s, speed=%jd, nports=%d\n", 926 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 927 speed, la->la_nports)); 928 929 /* This aggregator is chosen if 930 * the partner has a better system priority 931 * or, the total aggregated speed is higher 932 * or, it is already the chosen aggregator 933 */ 934 if ((best_la != NULL && LACP_SYS_PRI(la->la_partner) < 935 LACP_SYS_PRI(best_la->la_partner)) || 936 speed > best_speed || 937 (speed == best_speed && 938 la == lsc->lsc_active_aggregator)) { 939 best_la = la; 940 best_speed = speed; 941 } 942 } 943 944 KASSERT(best_la == NULL || best_la->la_nports > 0, 945 ("invalid aggregator refcnt")); 946 KASSERT(best_la == NULL || !TAILQ_EMPTY(&best_la->la_ports), 947 ("invalid aggregator list")); 948 949#if defined(LACP_DEBUG) 950 if (lsc->lsc_active_aggregator != best_la) { 951 LACP_DPRINTF((NULL, "active aggregator changed\n")); 952 LACP_DPRINTF((NULL, "old %s\n", 953 lacp_format_lagid_aggregator(lsc->lsc_active_aggregator, 954 buf, sizeof(buf)))); 955 } else { 956 LACP_DPRINTF((NULL, "active aggregator not changed\n")); 957 } 958 LACP_DPRINTF((NULL, "new %s\n", 959 lacp_format_lagid_aggregator(best_la, buf, sizeof(buf)))); 960#endif /* defined(LACP_DEBUG) */ 961 962 if (lsc->lsc_active_aggregator != best_la) { 963 sc->sc_ifp->if_baudrate = best_speed; 964 lsc->lsc_active_aggregator = best_la; 965 lacp_update_portmap(lsc); 966 if (best_la) { 967 lacp_suppress_distributing(lsc, best_la); 968 } 969 } 970} 971 972/* 973 * Updated the inactive portmap array with the new list of ports and 974 * make it live. 975 */ 976static void 977lacp_update_portmap(struct lacp_softc *lsc) 978{ 979 struct lacp_aggregator *la; 980 struct lacp_portmap *p; 981 struct lacp_port *lp; 982 u_int newmap; 983 int i; 984 985 newmap = lsc->lsc_activemap == 0 ? 1 : 0; 986 p = &lsc->lsc_pmap[newmap]; 987 la = lsc->lsc_active_aggregator; 988 bzero(p, sizeof(struct lacp_portmap)); 989 990 if (la != NULL && la->la_nports > 0) { 991 p->pm_count = la->la_nports; 992 i = 0; 993 TAILQ_FOREACH(lp, &la->la_ports, lp_dist_q) 994 p->pm_map[i++] = lp; 995 KASSERT(i == p->pm_count, ("Invalid port count")); 996 } 997 998 /* switch the active portmap over */ 999 atomic_store_rel_int(&lsc->lsc_activemap, newmap); 1000 LACP_DPRINTF((NULL, "Set table %d with %d ports\n", 1001 lsc->lsc_activemap, 1002 lsc->lsc_pmap[lsc->lsc_activemap].pm_count)); 1003} 1004 1005static uint16_t 1006lacp_compose_key(struct lacp_port *lp) 1007{ 1008 struct lagg_port *lgp = lp->lp_lagg; 1009 struct lagg_softc *sc = lgp->lp_softc; 1010 u_int media = lp->lp_media; 1011 uint16_t key; 1012 1013 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) { 1014 1015 /* 1016 * non-aggregatable links should have unique keys. 1017 * 1018 * XXX this isn't really unique as if_index is 16 bit. 1019 */ 1020 1021 /* bit 0..14: (some bits of) if_index of this port */ 1022 key = lp->lp_ifp->if_index; 1023 /* bit 15: 1 */ 1024 key |= 0x8000; 1025 } else { 1026 u_int subtype = IFM_SUBTYPE(media); 1027 1028 KASSERT(IFM_TYPE(media) == IFM_ETHER, ("invalid media type")); 1029 KASSERT((media & IFM_FDX) != 0, ("aggregating HDX interface")); 1030 1031 /* bit 0..4: IFM_SUBTYPE */ 1032 key = subtype; 1033 /* bit 5..14: (some bits of) if_index of lagg device */ 1034 key |= 0x7fe0 & ((sc->sc_ifp->if_index) << 5); 1035 /* bit 15: 0 */ 1036 } 1037 return (htons(key)); 1038} 1039 1040static void 1041lacp_aggregator_addref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1042{ 1043#if defined(LACP_DEBUG) 1044 char buf[LACP_LAGIDSTR_MAX+1]; 1045#endif 1046 1047 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1048 __func__, 1049 lacp_format_lagid(&la->la_actor, &la->la_partner, 1050 buf, sizeof(buf)), 1051 la->la_refcnt, la->la_refcnt + 1)); 1052 1053 KASSERT(la->la_refcnt > 0, ("refcount <= 0")); 1054 la->la_refcnt++; 1055 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcount")); 1056} 1057 1058static void 1059lacp_aggregator_delref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1060{ 1061#if defined(LACP_DEBUG) 1062 char buf[LACP_LAGIDSTR_MAX+1]; 1063#endif 1064 1065 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1066 __func__, 1067 lacp_format_lagid(&la->la_actor, &la->la_partner, 1068 buf, sizeof(buf)), 1069 la->la_refcnt, la->la_refcnt - 1)); 1070 1071 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcnt")); 1072 la->la_refcnt--; 1073 if (la->la_refcnt > 0) { 1074 return; 1075 } 1076 1077 KASSERT(la->la_refcnt == 0, ("refcount not zero")); 1078 KASSERT(lsc->lsc_active_aggregator != la, ("aggregator active")); 1079 1080 TAILQ_REMOVE(&lsc->lsc_aggregators, la, la_q); 1081 1082 free(la, M_DEVBUF); 1083} 1084 1085/* 1086 * lacp_aggregator_get: allocate an aggregator. 1087 */ 1088 1089static struct lacp_aggregator * 1090lacp_aggregator_get(struct lacp_softc *lsc, struct lacp_port *lp) 1091{ 1092 struct lacp_aggregator *la; 1093 1094 la = malloc(sizeof(*la), M_DEVBUF, M_NOWAIT); 1095 if (la) { 1096 la->la_refcnt = 1; 1097 la->la_nports = 0; 1098 TAILQ_INIT(&la->la_ports); 1099 la->la_pending = 0; 1100 TAILQ_INSERT_TAIL(&lsc->lsc_aggregators, la, la_q); 1101 } 1102 1103 return (la); 1104} 1105 1106/* 1107 * lacp_fill_aggregator_id: setup a newly allocated aggregator from a port. 1108 */ 1109 1110static void 1111lacp_fill_aggregator_id(struct lacp_aggregator *la, const struct lacp_port *lp) 1112{ 1113 lacp_fill_aggregator_id_peer(&la->la_partner, &lp->lp_partner); 1114 lacp_fill_aggregator_id_peer(&la->la_actor, &lp->lp_actor); 1115 1116 la->la_actor.lip_state = lp->lp_state & LACP_STATE_AGGREGATION; 1117} 1118 1119static void 1120lacp_fill_aggregator_id_peer(struct lacp_peerinfo *lpi_aggr, 1121 const struct lacp_peerinfo *lpi_port) 1122{ 1123 memset(lpi_aggr, 0, sizeof(*lpi_aggr)); 1124 lpi_aggr->lip_systemid = lpi_port->lip_systemid; 1125 lpi_aggr->lip_key = lpi_port->lip_key; 1126} 1127 1128/* 1129 * lacp_aggregator_is_compatible: check if a port can join to an aggregator. 1130 */ 1131 1132static int 1133lacp_aggregator_is_compatible(const struct lacp_aggregator *la, 1134 const struct lacp_port *lp) 1135{ 1136 if (!(lp->lp_state & LACP_STATE_AGGREGATION) || 1137 !(lp->lp_partner.lip_state & LACP_STATE_AGGREGATION)) { 1138 return (0); 1139 } 1140 1141 if (!(la->la_actor.lip_state & LACP_STATE_AGGREGATION)) { 1142 return (0); 1143 } 1144 1145 if (!lacp_peerinfo_is_compatible(&la->la_partner, &lp->lp_partner)) { 1146 return (0); 1147 } 1148 1149 if (!lacp_peerinfo_is_compatible(&la->la_actor, &lp->lp_actor)) { 1150 return (0); 1151 } 1152 1153 return (1); 1154} 1155 1156static int 1157lacp_peerinfo_is_compatible(const struct lacp_peerinfo *a, 1158 const struct lacp_peerinfo *b) 1159{ 1160 if (memcmp(&a->lip_systemid, &b->lip_systemid, 1161 sizeof(a->lip_systemid))) { 1162 return (0); 1163 } 1164 1165 if (memcmp(&a->lip_key, &b->lip_key, sizeof(a->lip_key))) { 1166 return (0); 1167 } 1168 1169 return (1); 1170} 1171 1172static void 1173lacp_port_enable(struct lacp_port *lp) 1174{ 1175 lp->lp_state |= LACP_STATE_AGGREGATION; 1176} 1177 1178static void 1179lacp_port_disable(struct lacp_port *lp) 1180{ 1181 lacp_set_mux(lp, LACP_MUX_DETACHED); 1182 1183 lp->lp_state &= ~LACP_STATE_AGGREGATION; 1184 lp->lp_selected = LACP_UNSELECTED; 1185 lacp_sm_rx_record_default(lp); 1186 lp->lp_partner.lip_state &= ~LACP_STATE_AGGREGATION; 1187 lp->lp_state &= ~LACP_STATE_EXPIRED; 1188} 1189 1190/* 1191 * lacp_select: select an aggregator. create one if necessary. 1192 */ 1193static void 1194lacp_select(struct lacp_port *lp) 1195{ 1196 struct lacp_softc *lsc = lp->lp_lsc; 1197 struct lacp_aggregator *la; 1198#if defined(LACP_DEBUG) 1199 char buf[LACP_LAGIDSTR_MAX+1]; 1200#endif 1201 1202 if (lp->lp_aggregator) { 1203 return; 1204 } 1205 1206 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1207 ("timer_wait_while still active")); 1208 1209 LACP_DPRINTF((lp, "port lagid=%s\n", 1210 lacp_format_lagid(&lp->lp_actor, &lp->lp_partner, 1211 buf, sizeof(buf)))); 1212 1213 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 1214 if (lacp_aggregator_is_compatible(la, lp)) { 1215 break; 1216 } 1217 } 1218 1219 if (la == NULL) { 1220 la = lacp_aggregator_get(lsc, lp); 1221 if (la == NULL) { 1222 LACP_DPRINTF((lp, "aggregator creation failed\n")); 1223 1224 /* 1225 * will retry on the next tick. 1226 */ 1227 1228 return; 1229 } 1230 lacp_fill_aggregator_id(la, lp); 1231 LACP_DPRINTF((lp, "aggregator created\n")); 1232 } else { 1233 LACP_DPRINTF((lp, "compatible aggregator found\n")); 1234 if (la->la_refcnt == LACP_MAX_PORTS) 1235 return; 1236 lacp_aggregator_addref(lsc, la); 1237 } 1238 1239 LACP_DPRINTF((lp, "aggregator lagid=%s\n", 1240 lacp_format_lagid(&la->la_actor, &la->la_partner, 1241 buf, sizeof(buf)))); 1242 1243 lp->lp_aggregator = la; 1244 lp->lp_selected = LACP_SELECTED; 1245} 1246 1247/* 1248 * lacp_unselect: finish unselect/detach process. 1249 */ 1250 1251static void 1252lacp_unselect(struct lacp_port *lp) 1253{ 1254 struct lacp_softc *lsc = lp->lp_lsc; 1255 struct lacp_aggregator *la = lp->lp_aggregator; 1256 1257 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1258 ("timer_wait_while still active")); 1259 1260 if (la == NULL) { 1261 return; 1262 } 1263 1264 lp->lp_aggregator = NULL; 1265 lacp_aggregator_delref(lsc, la); 1266} 1267 1268/* mux machine */ 1269 1270static void 1271lacp_sm_mux(struct lacp_port *lp) 1272{ 1273 enum lacp_mux_state new_state; 1274 boolean_t p_sync = 1275 (lp->lp_partner.lip_state & LACP_STATE_SYNC) != 0; 1276 boolean_t p_collecting = 1277 (lp->lp_partner.lip_state & LACP_STATE_COLLECTING) != 0; 1278 enum lacp_selected selected = lp->lp_selected; 1279 struct lacp_aggregator *la; 1280 1281 /* LACP_DPRINTF((lp, "%s: state %d\n", __func__, lp->lp_mux_state)); */ 1282 1283re_eval: 1284 la = lp->lp_aggregator; 1285 KASSERT(lp->lp_mux_state == LACP_MUX_DETACHED || la != NULL, 1286 ("MUX not detached")); 1287 new_state = lp->lp_mux_state; 1288 switch (lp->lp_mux_state) { 1289 case LACP_MUX_DETACHED: 1290 if (selected != LACP_UNSELECTED) { 1291 new_state = LACP_MUX_WAITING; 1292 } 1293 break; 1294 case LACP_MUX_WAITING: 1295 KASSERT(la->la_pending > 0 || 1296 !LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1297 ("timer_wait_while still active")); 1298 if (selected == LACP_SELECTED && la->la_pending == 0) { 1299 new_state = LACP_MUX_ATTACHED; 1300 } else if (selected == LACP_UNSELECTED) { 1301 new_state = LACP_MUX_DETACHED; 1302 } 1303 break; 1304 case LACP_MUX_ATTACHED: 1305 if (selected == LACP_SELECTED && p_sync) { 1306 new_state = LACP_MUX_COLLECTING; 1307 } else if (selected != LACP_SELECTED) { 1308 new_state = LACP_MUX_DETACHED; 1309 } 1310 break; 1311 case LACP_MUX_COLLECTING: 1312 if (selected == LACP_SELECTED && p_sync && p_collecting) { 1313 new_state = LACP_MUX_DISTRIBUTING; 1314 } else if (selected != LACP_SELECTED || !p_sync) { 1315 new_state = LACP_MUX_ATTACHED; 1316 } 1317 break; 1318 case LACP_MUX_DISTRIBUTING: 1319 if (selected != LACP_SELECTED || !p_sync || !p_collecting) { 1320 new_state = LACP_MUX_COLLECTING; 1321 } 1322 break; 1323 default: 1324 panic("%s: unknown state", __func__); 1325 } 1326 1327 if (lp->lp_mux_state == new_state) { 1328 return; 1329 } 1330 1331 lacp_set_mux(lp, new_state); 1332 goto re_eval; 1333} 1334 1335static void 1336lacp_set_mux(struct lacp_port *lp, enum lacp_mux_state new_state) 1337{ 1338 struct lacp_aggregator *la = lp->lp_aggregator; 1339 1340 if (lp->lp_mux_state == new_state) { 1341 return; 1342 } 1343 1344 switch (new_state) { 1345 case LACP_MUX_DETACHED: 1346 lp->lp_state &= ~LACP_STATE_SYNC; 1347 lacp_disable_distributing(lp); 1348 lacp_disable_collecting(lp); 1349 lacp_sm_assert_ntt(lp); 1350 /* cancel timer */ 1351 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE)) { 1352 KASSERT(la->la_pending > 0, 1353 ("timer_wait_while not active")); 1354 la->la_pending--; 1355 } 1356 LACP_TIMER_DISARM(lp, LACP_TIMER_WAIT_WHILE); 1357 lacp_unselect(lp); 1358 break; 1359 case LACP_MUX_WAITING: 1360 LACP_TIMER_ARM(lp, LACP_TIMER_WAIT_WHILE, 1361 LACP_AGGREGATE_WAIT_TIME); 1362 la->la_pending++; 1363 break; 1364 case LACP_MUX_ATTACHED: 1365 lp->lp_state |= LACP_STATE_SYNC; 1366 lacp_disable_collecting(lp); 1367 lacp_sm_assert_ntt(lp); 1368 break; 1369 case LACP_MUX_COLLECTING: 1370 lacp_enable_collecting(lp); 1371 lacp_disable_distributing(lp); 1372 lacp_sm_assert_ntt(lp); 1373 break; 1374 case LACP_MUX_DISTRIBUTING: 1375 lacp_enable_distributing(lp); 1376 break; 1377 default: 1378 panic("%s: unknown state", __func__); 1379 } 1380 1381 LACP_DPRINTF((lp, "mux_state %d -> %d\n", lp->lp_mux_state, new_state)); 1382 1383 lp->lp_mux_state = new_state; 1384} 1385 1386static void 1387lacp_sm_mux_timer(struct lacp_port *lp) 1388{ 1389 struct lacp_aggregator *la = lp->lp_aggregator; 1390#if defined(LACP_DEBUG) 1391 char buf[LACP_LAGIDSTR_MAX+1]; 1392#endif 1393 1394 KASSERT(la->la_pending > 0, ("no pending event")); 1395 1396 LACP_DPRINTF((lp, "%s: aggregator %s, pending %d -> %d\n", __func__, 1397 lacp_format_lagid(&la->la_actor, &la->la_partner, 1398 buf, sizeof(buf)), 1399 la->la_pending, la->la_pending - 1)); 1400 1401 la->la_pending--; 1402} 1403 1404/* periodic transmit machine */ 1405 1406static void 1407lacp_sm_ptx_update_timeout(struct lacp_port *lp, uint8_t oldpstate) 1408{ 1409 if (LACP_STATE_EQ(oldpstate, lp->lp_partner.lip_state, 1410 LACP_STATE_TIMEOUT)) { 1411 return; 1412 } 1413 1414 LACP_DPRINTF((lp, "partner timeout changed\n")); 1415 1416 /* 1417 * FAST_PERIODIC -> SLOW_PERIODIC 1418 * or 1419 * SLOW_PERIODIC (-> PERIODIC_TX) -> FAST_PERIODIC 1420 * 1421 * let lacp_sm_ptx_tx_schedule to update timeout. 1422 */ 1423 1424 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1425 1426 /* 1427 * if timeout has been shortened, assert NTT. 1428 */ 1429 1430 if ((lp->lp_partner.lip_state & LACP_STATE_TIMEOUT)) { 1431 lacp_sm_assert_ntt(lp); 1432 } 1433} 1434 1435static void 1436lacp_sm_ptx_tx_schedule(struct lacp_port *lp) 1437{ 1438 int timeout; 1439 1440 if (!(lp->lp_state & LACP_STATE_ACTIVITY) && 1441 !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) { 1442 1443 /* 1444 * NO_PERIODIC 1445 */ 1446 1447 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1448 return; 1449 } 1450 1451 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_PERIODIC)) { 1452 return; 1453 } 1454 1455 timeout = (lp->lp_partner.lip_state & LACP_STATE_TIMEOUT) ? 1456 LACP_FAST_PERIODIC_TIME : LACP_SLOW_PERIODIC_TIME; 1457 1458 LACP_TIMER_ARM(lp, LACP_TIMER_PERIODIC, timeout); 1459} 1460 1461static void 1462lacp_sm_ptx_timer(struct lacp_port *lp) 1463{ 1464 lacp_sm_assert_ntt(lp); 1465} 1466 1467static void 1468lacp_sm_rx(struct lacp_port *lp, const struct lacpdu *du) 1469{ 1470 int timeout; 1471 1472 /* 1473 * check LACP_DISABLED first 1474 */ 1475 1476 if (!(lp->lp_state & LACP_STATE_AGGREGATION)) { 1477 return; 1478 } 1479 1480 /* 1481 * check loopback condition. 1482 */ 1483 1484 if (!lacp_compare_systemid(&du->ldu_actor.lip_systemid, 1485 &lp->lp_actor.lip_systemid)) { 1486 return; 1487 } 1488 1489 /* 1490 * EXPIRED, DEFAULTED, CURRENT -> CURRENT 1491 */ 1492 1493 lacp_sm_rx_update_selected(lp, du); 1494 lacp_sm_rx_update_ntt(lp, du); 1495 lacp_sm_rx_record_pdu(lp, du); 1496 1497 timeout = (lp->lp_state & LACP_STATE_TIMEOUT) ? 1498 LACP_SHORT_TIMEOUT_TIME : LACP_LONG_TIMEOUT_TIME; 1499 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, timeout); 1500 1501 lp->lp_state &= ~LACP_STATE_EXPIRED; 1502 1503 /* 1504 * kick transmit machine without waiting the next tick. 1505 */ 1506 1507 lacp_sm_tx(lp); 1508} 1509 1510static void 1511lacp_sm_rx_set_expired(struct lacp_port *lp) 1512{ 1513 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1514 lp->lp_partner.lip_state |= LACP_STATE_TIMEOUT; 1515 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, LACP_SHORT_TIMEOUT_TIME); 1516 lp->lp_state |= LACP_STATE_EXPIRED; 1517} 1518 1519static void 1520lacp_sm_rx_timer(struct lacp_port *lp) 1521{ 1522 if ((lp->lp_state & LACP_STATE_EXPIRED) == 0) { 1523 /* CURRENT -> EXPIRED */ 1524 LACP_DPRINTF((lp, "%s: CURRENT -> EXPIRED\n", __func__)); 1525 lacp_sm_rx_set_expired(lp); 1526 } else { 1527 /* EXPIRED -> DEFAULTED */ 1528 LACP_DPRINTF((lp, "%s: EXPIRED -> DEFAULTED\n", __func__)); 1529 lacp_sm_rx_update_default_selected(lp); 1530 lacp_sm_rx_record_default(lp); 1531 lp->lp_state &= ~LACP_STATE_EXPIRED; 1532 } 1533} 1534 1535static void 1536lacp_sm_rx_record_pdu(struct lacp_port *lp, const struct lacpdu *du) 1537{ 1538 boolean_t active; 1539 uint8_t oldpstate; 1540#if defined(LACP_DEBUG) 1541 char buf[LACP_STATESTR_MAX+1]; 1542#endif 1543 1544 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1545 1546 oldpstate = lp->lp_partner.lip_state; 1547 1548 active = (du->ldu_actor.lip_state & LACP_STATE_ACTIVITY) 1549 || ((lp->lp_state & LACP_STATE_ACTIVITY) && 1550 (du->ldu_partner.lip_state & LACP_STATE_ACTIVITY)); 1551 1552 lp->lp_partner = du->ldu_actor; 1553 if (active && 1554 ((LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1555 LACP_STATE_AGGREGATION) && 1556 !lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner)) 1557 || (du->ldu_partner.lip_state & LACP_STATE_AGGREGATION) == 0)) { 1558 /* XXX nothing? */ 1559 } else { 1560 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1561 } 1562 1563 lp->lp_state &= ~LACP_STATE_DEFAULTED; 1564 1565 if (oldpstate != lp->lp_partner.lip_state) { 1566 LACP_DPRINTF((lp, "old pstate %s\n", 1567 lacp_format_state(oldpstate, buf, sizeof(buf)))); 1568 LACP_DPRINTF((lp, "new pstate %s\n", 1569 lacp_format_state(lp->lp_partner.lip_state, buf, 1570 sizeof(buf)))); 1571 } 1572 1573 lacp_sm_ptx_update_timeout(lp, oldpstate); 1574} 1575 1576static void 1577lacp_sm_rx_update_ntt(struct lacp_port *lp, const struct lacpdu *du) 1578{ 1579 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1580 1581 if (lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner) || 1582 !LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1583 LACP_STATE_ACTIVITY | LACP_STATE_SYNC | LACP_STATE_AGGREGATION)) { 1584 LACP_DPRINTF((lp, "%s: assert ntt\n", __func__)); 1585 lacp_sm_assert_ntt(lp); 1586 } 1587} 1588 1589static void 1590lacp_sm_rx_record_default(struct lacp_port *lp) 1591{ 1592 uint8_t oldpstate; 1593 1594 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1595 1596 oldpstate = lp->lp_partner.lip_state; 1597 lp->lp_partner = lacp_partner_admin; 1598 lp->lp_state |= LACP_STATE_DEFAULTED; 1599 lacp_sm_ptx_update_timeout(lp, oldpstate); 1600} 1601 1602static void 1603lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *lp, 1604 const struct lacp_peerinfo *info) 1605{ 1606 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1607 1608 if (lacp_compare_peerinfo(&lp->lp_partner, info) || 1609 !LACP_STATE_EQ(lp->lp_partner.lip_state, info->lip_state, 1610 LACP_STATE_AGGREGATION)) { 1611 lp->lp_selected = LACP_UNSELECTED; 1612 /* mux machine will clean up lp->lp_aggregator */ 1613 } 1614} 1615 1616static void 1617lacp_sm_rx_update_selected(struct lacp_port *lp, const struct lacpdu *du) 1618{ 1619 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1620 1621 lacp_sm_rx_update_selected_from_peerinfo(lp, &du->ldu_actor); 1622} 1623 1624static void 1625lacp_sm_rx_update_default_selected(struct lacp_port *lp) 1626{ 1627 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1628 1629 lacp_sm_rx_update_selected_from_peerinfo(lp, &lacp_partner_admin); 1630} 1631 1632/* transmit machine */ 1633 1634static void 1635lacp_sm_tx(struct lacp_port *lp) 1636{ 1637 int error; 1638 1639 if (!(lp->lp_state & LACP_STATE_AGGREGATION) 1640#if 1 1641 || (!(lp->lp_state & LACP_STATE_ACTIVITY) 1642 && !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) 1643#endif 1644 ) { 1645 lp->lp_flags &= ~LACP_PORT_NTT; 1646 } 1647 1648 if (!(lp->lp_flags & LACP_PORT_NTT)) { 1649 return; 1650 } 1651 1652 /* Rate limit to 3 PDUs per LACP_FAST_PERIODIC_TIME */ 1653 if (ppsratecheck(&lp->lp_last_lacpdu, &lp->lp_lacpdu_sent, 1654 (3 / LACP_FAST_PERIODIC_TIME)) == 0) { 1655 LACP_DPRINTF((lp, "rate limited pdu\n")); 1656 return; 1657 } 1658 1659 error = lacp_xmit_lacpdu(lp); 1660 1661 if (error == 0) { 1662 lp->lp_flags &= ~LACP_PORT_NTT; 1663 } else { 1664 LACP_DPRINTF((lp, "lacpdu transmit failure, error %d\n", 1665 error)); 1666 } 1667} 1668 1669static void 1670lacp_sm_assert_ntt(struct lacp_port *lp) 1671{ 1672 1673 lp->lp_flags |= LACP_PORT_NTT; 1674} 1675 1676static void 1677lacp_run_timers(struct lacp_port *lp) 1678{ 1679 int i; 1680 1681 for (i = 0; i < LACP_NTIMER; i++) { 1682 KASSERT(lp->lp_timer[i] >= 0, 1683 ("invalid timer value %d", lp->lp_timer[i])); 1684 if (lp->lp_timer[i] == 0) { 1685 continue; 1686 } else if (--lp->lp_timer[i] <= 0) { 1687 if (lacp_timer_funcs[i]) { 1688 (*lacp_timer_funcs[i])(lp); 1689 } 1690 } 1691 } 1692} 1693 1694int 1695lacp_marker_input(struct lacp_port *lp, struct mbuf *m) 1696{ 1697 struct lacp_softc *lsc = lp->lp_lsc; 1698 struct lagg_port *lgp = lp->lp_lagg; 1699 struct lacp_port *lp2; 1700 struct markerdu *mdu; 1701 int error = 0; 1702 int pending = 0; 1703 1704 if (m->m_pkthdr.len != sizeof(*mdu)) { 1705 goto bad; 1706 } 1707 1708 if ((m->m_flags & M_MCAST) == 0) { 1709 goto bad; 1710 } 1711 1712 if (m->m_len < sizeof(*mdu)) { 1713 m = m_pullup(m, sizeof(*mdu)); 1714 if (m == NULL) { 1715 return (ENOMEM); 1716 } 1717 } 1718 1719 mdu = mtod(m, struct markerdu *); 1720 1721 if (memcmp(&mdu->mdu_eh.ether_dhost, 1722 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 1723 goto bad; 1724 } 1725 1726 if (mdu->mdu_sph.sph_version != 1) { 1727 goto bad; 1728 } 1729 1730 switch (mdu->mdu_tlv.tlv_type) { 1731 case MARKER_TYPE_INFO: 1732 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 1733 marker_info_tlv_template, TRUE)) { 1734 goto bad; 1735 } 1736 mdu->mdu_tlv.tlv_type = MARKER_TYPE_RESPONSE; 1737 memcpy(&mdu->mdu_eh.ether_dhost, 1738 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN); 1739 memcpy(&mdu->mdu_eh.ether_shost, 1740 lgp->lp_lladdr, ETHER_ADDR_LEN); 1741 error = lagg_enqueue(lp->lp_ifp, m); 1742 break; 1743 1744 case MARKER_TYPE_RESPONSE: 1745 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 1746 marker_response_tlv_template, TRUE)) { 1747 goto bad; 1748 } 1749 LACP_DPRINTF((lp, "marker response, port=%u, sys=%6D, id=%u\n", 1750 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, 1751 ":", ntohl(mdu->mdu_info.mi_rq_xid))); 1752 1753 /* Verify that it is the last marker we sent out */ 1754 if (memcmp(&mdu->mdu_info, &lp->lp_marker, 1755 sizeof(struct lacp_markerinfo))) 1756 goto bad; 1757 1758 LACP_LOCK(lsc); 1759 lp->lp_flags &= ~LACP_PORT_MARK; 1760 1761 if (lsc->lsc_suppress_distributing) { 1762 /* Check if any ports are waiting for a response */ 1763 LIST_FOREACH(lp2, &lsc->lsc_ports, lp_next) { 1764 if (lp2->lp_flags & LACP_PORT_MARK) { 1765 pending = 1; 1766 break; 1767 } 1768 } 1769 1770 if (pending == 0) { 1771 /* All interface queues are clear */ 1772 LACP_DPRINTF((NULL, "queue flush complete\n")); 1773 lsc->lsc_suppress_distributing = FALSE; 1774 } 1775 } 1776 LACP_UNLOCK(lsc); 1777 m_freem(m); 1778 break; 1779 1780 default: 1781 goto bad; 1782 } 1783 1784 return (error); 1785 1786bad: 1787 LACP_DPRINTF((lp, "bad marker frame\n")); 1788 m_freem(m); 1789 return (EINVAL); 1790} 1791 1792static int 1793tlv_check(const void *p, size_t size, const struct tlvhdr *tlv, 1794 const struct tlv_template *tmpl, boolean_t check_type) 1795{ 1796 while (/* CONSTCOND */ 1) { 1797 if ((const char *)tlv - (const char *)p + sizeof(*tlv) > size) { 1798 return (EINVAL); 1799 } 1800 if ((check_type && tlv->tlv_type != tmpl->tmpl_type) || 1801 tlv->tlv_length != tmpl->tmpl_length) { 1802 return (EINVAL); 1803 } 1804 if (tmpl->tmpl_type == 0) { 1805 break; 1806 } 1807 tlv = (const struct tlvhdr *) 1808 ((const char *)tlv + tlv->tlv_length); 1809 tmpl++; 1810 } 1811 1812 return (0); 1813} 1814 1815#if defined(LACP_DEBUG) 1816const char * 1817lacp_format_mac(const uint8_t *mac, char *buf, size_t buflen) 1818{ 1819 snprintf(buf, buflen, "%02X-%02X-%02X-%02X-%02X-%02X", 1820 (int)mac[0], 1821 (int)mac[1], 1822 (int)mac[2], 1823 (int)mac[3], 1824 (int)mac[4], 1825 (int)mac[5]); 1826 1827 return (buf); 1828} 1829 1830const char * 1831lacp_format_systemid(const struct lacp_systemid *sysid, 1832 char *buf, size_t buflen) 1833{ 1834 char macbuf[LACP_MACSTR_MAX+1]; 1835 1836 snprintf(buf, buflen, "%04X,%s", 1837 ntohs(sysid->lsi_prio), 1838 lacp_format_mac(sysid->lsi_mac, macbuf, sizeof(macbuf))); 1839 1840 return (buf); 1841} 1842 1843const char * 1844lacp_format_portid(const struct lacp_portid *portid, char *buf, size_t buflen) 1845{ 1846 snprintf(buf, buflen, "%04X,%04X", 1847 ntohs(portid->lpi_prio), 1848 ntohs(portid->lpi_portno)); 1849 1850 return (buf); 1851} 1852 1853const char * 1854lacp_format_partner(const struct lacp_peerinfo *peer, char *buf, size_t buflen) 1855{ 1856 char sysid[LACP_SYSTEMIDSTR_MAX+1]; 1857 char portid[LACP_PORTIDSTR_MAX+1]; 1858 1859 snprintf(buf, buflen, "(%s,%04X,%s)", 1860 lacp_format_systemid(&peer->lip_systemid, sysid, sizeof(sysid)), 1861 ntohs(peer->lip_key), 1862 lacp_format_portid(&peer->lip_portid, portid, sizeof(portid))); 1863 1864 return (buf); 1865} 1866 1867const char * 1868lacp_format_lagid(const struct lacp_peerinfo *a, 1869 const struct lacp_peerinfo *b, char *buf, size_t buflen) 1870{ 1871 char astr[LACP_PARTNERSTR_MAX+1]; 1872 char bstr[LACP_PARTNERSTR_MAX+1]; 1873 1874#if 0 1875 /* 1876 * there's a convention to display small numbered peer 1877 * in the left. 1878 */ 1879 1880 if (lacp_compare_peerinfo(a, b) > 0) { 1881 const struct lacp_peerinfo *t; 1882 1883 t = a; 1884 a = b; 1885 b = t; 1886 } 1887#endif 1888 1889 snprintf(buf, buflen, "[%s,%s]", 1890 lacp_format_partner(a, astr, sizeof(astr)), 1891 lacp_format_partner(b, bstr, sizeof(bstr))); 1892 1893 return (buf); 1894} 1895 1896const char * 1897lacp_format_lagid_aggregator(const struct lacp_aggregator *la, 1898 char *buf, size_t buflen) 1899{ 1900 if (la == NULL) { 1901 return ("(none)"); 1902 } 1903 1904 return (lacp_format_lagid(&la->la_actor, &la->la_partner, buf, buflen)); 1905} 1906 1907const char * 1908lacp_format_state(uint8_t state, char *buf, size_t buflen) 1909{ 1910 snprintf(buf, buflen, "%b", state, LACP_STATE_BITS); 1911 return (buf); 1912} 1913 1914static void 1915lacp_dump_lacpdu(const struct lacpdu *du) 1916{ 1917 char buf[LACP_PARTNERSTR_MAX+1]; 1918 char buf2[LACP_STATESTR_MAX+1]; 1919 1920 printf("actor=%s\n", 1921 lacp_format_partner(&du->ldu_actor, buf, sizeof(buf))); 1922 printf("actor.state=%s\n", 1923 lacp_format_state(du->ldu_actor.lip_state, buf2, sizeof(buf2))); 1924 printf("partner=%s\n", 1925 lacp_format_partner(&du->ldu_partner, buf, sizeof(buf))); 1926 printf("partner.state=%s\n", 1927 lacp_format_state(du->ldu_partner.lip_state, buf2, sizeof(buf2))); 1928 1929 printf("maxdelay=%d\n", ntohs(du->ldu_collector.lci_maxdelay)); 1930} 1931 1932static void 1933lacp_dprintf(const struct lacp_port *lp, const char *fmt, ...) 1934{ 1935 va_list va; 1936 1937 if (lp) { 1938 printf("%s: ", lp->lp_ifp->if_xname); 1939 } 1940 1941 va_start(va, fmt); 1942 vprintf(fmt, va); 1943 va_end(va); 1944} 1945#endif 1946