ieee8023ad_lacp.c revision 186254
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 186254 2008-12-17 20:58:10Z 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 hash = lagg_hashmbuf(m, lsc->lsc_hashkey); 816 hash %= pm->pm_count; 817 lp = pm->pm_map[hash]; 818 819 KASSERT((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0, 820 ("aggregated port is not distributing")); 821 822 return (lp->lp_lagg); 823} 824/* 825 * lacp_suppress_distributing: drop transmit packets for a while 826 * to preserve packet ordering. 827 */ 828 829static void 830lacp_suppress_distributing(struct lacp_softc *lsc, struct lacp_aggregator *la) 831{ 832 struct lacp_port *lp; 833 834 if (lsc->lsc_active_aggregator != la) { 835 return; 836 } 837 838 LACP_DPRINTF((NULL, "%s\n", __func__)); 839 lsc->lsc_suppress_distributing = TRUE; 840 841 /* send a marker frame down each port to verify the queues are empty */ 842 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { 843 lp->lp_flags |= LACP_PORT_MARK; 844 lacp_xmit_marker(lp); 845 } 846 847 /* set a timeout for the marker frames */ 848 callout_reset(&lsc->lsc_transit_callout, 849 LACP_TRANSIT_DELAY * hz / 1000, lacp_transit_expire, lsc); 850} 851 852static int 853lacp_compare_peerinfo(const struct lacp_peerinfo *a, 854 const struct lacp_peerinfo *b) 855{ 856 return (memcmp(a, b, offsetof(struct lacp_peerinfo, lip_state))); 857} 858 859static int 860lacp_compare_systemid(const struct lacp_systemid *a, 861 const struct lacp_systemid *b) 862{ 863 return (memcmp(a, b, sizeof(*a))); 864} 865 866#if 0 /* unused */ 867static int 868lacp_compare_portid(const struct lacp_portid *a, 869 const struct lacp_portid *b) 870{ 871 return (memcmp(a, b, sizeof(*a))); 872} 873#endif 874 875static uint64_t 876lacp_aggregator_bandwidth(struct lacp_aggregator *la) 877{ 878 struct lacp_port *lp; 879 uint64_t speed; 880 881 lp = TAILQ_FIRST(&la->la_ports); 882 if (lp == NULL) { 883 return (0); 884 } 885 886 speed = ifmedia_baudrate(lp->lp_media); 887 speed *= la->la_nports; 888 if (speed == 0) { 889 LACP_DPRINTF((lp, "speed 0? media=0x%x nports=%d\n", 890 lp->lp_media, la->la_nports)); 891 } 892 893 return (speed); 894} 895 896/* 897 * lacp_select_active_aggregator: select an aggregator to be used to transmit 898 * packets from lagg(4) interface. 899 */ 900 901static void 902lacp_select_active_aggregator(struct lacp_softc *lsc) 903{ 904 struct lagg_softc *sc = lsc->lsc_softc; 905 struct lacp_aggregator *la; 906 struct lacp_aggregator *best_la = NULL; 907 uint64_t best_speed = 0; 908#if defined(LACP_DEBUG) 909 char buf[LACP_LAGIDSTR_MAX+1]; 910#endif /* defined(LACP_DEBUG) */ 911 912 LACP_DPRINTF((NULL, "%s:\n", __func__)); 913 914 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 915 uint64_t speed; 916 917 if (la->la_nports == 0) { 918 continue; 919 } 920 921 speed = lacp_aggregator_bandwidth(la); 922 LACP_DPRINTF((NULL, "%s, speed=%jd, nports=%d\n", 923 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 924 speed, la->la_nports)); 925 926 /* This aggregator is chosen if 927 * the partner has a better system priority 928 * or, the total aggregated speed is higher 929 * or, it is already the chosen aggregator 930 */ 931 if ((best_la != NULL && LACP_SYS_PRI(la->la_partner) < 932 LACP_SYS_PRI(best_la->la_partner)) || 933 speed > best_speed || 934 (speed == best_speed && 935 la == lsc->lsc_active_aggregator)) { 936 best_la = la; 937 best_speed = speed; 938 } 939 } 940 941 KASSERT(best_la == NULL || best_la->la_nports > 0, 942 ("invalid aggregator refcnt")); 943 KASSERT(best_la == NULL || !TAILQ_EMPTY(&best_la->la_ports), 944 ("invalid aggregator list")); 945 946#if defined(LACP_DEBUG) 947 if (lsc->lsc_active_aggregator != best_la) { 948 LACP_DPRINTF((NULL, "active aggregator changed\n")); 949 LACP_DPRINTF((NULL, "old %s\n", 950 lacp_format_lagid_aggregator(lsc->lsc_active_aggregator, 951 buf, sizeof(buf)))); 952 } else { 953 LACP_DPRINTF((NULL, "active aggregator not changed\n")); 954 } 955 LACP_DPRINTF((NULL, "new %s\n", 956 lacp_format_lagid_aggregator(best_la, buf, sizeof(buf)))); 957#endif /* defined(LACP_DEBUG) */ 958 959 if (lsc->lsc_active_aggregator != best_la) { 960 sc->sc_ifp->if_baudrate = best_speed; 961 lsc->lsc_active_aggregator = best_la; 962 lacp_update_portmap(lsc); 963 if (best_la) { 964 lacp_suppress_distributing(lsc, best_la); 965 } 966 } 967} 968 969/* 970 * Updated the inactive portmap array with the new list of ports and 971 * make it live. 972 */ 973static void 974lacp_update_portmap(struct lacp_softc *lsc) 975{ 976 struct lacp_aggregator *la; 977 struct lacp_portmap *p; 978 struct lacp_port *lp; 979 u_int newmap; 980 int i; 981 982 newmap = lsc->lsc_activemap == 0 ? 1 : 0; 983 p = &lsc->lsc_pmap[newmap]; 984 la = lsc->lsc_active_aggregator; 985 bzero(p, sizeof(struct lacp_portmap)); 986 987 if (la != NULL && la->la_nports > 0) { 988 p->pm_count = la->la_nports; 989 i = 0; 990 TAILQ_FOREACH(lp, &la->la_ports, lp_dist_q) 991 p->pm_map[i++] = lp; 992 KASSERT(i == p->pm_count, ("Invalid port count")); 993 } 994 995 /* switch the active portmap over */ 996 atomic_store_rel_int(&lsc->lsc_activemap, newmap); 997 LACP_DPRINTF((NULL, "Set table %d with %d ports\n", 998 lsc->lsc_activemap, 999 lsc->lsc_pmap[lsc->lsc_activemap].pm_count)); 1000} 1001 1002static uint16_t 1003lacp_compose_key(struct lacp_port *lp) 1004{ 1005 struct lagg_port *lgp = lp->lp_lagg; 1006 struct lagg_softc *sc = lgp->lp_softc; 1007 u_int media = lp->lp_media; 1008 uint16_t key; 1009 1010 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) { 1011 1012 /* 1013 * non-aggregatable links should have unique keys. 1014 * 1015 * XXX this isn't really unique as if_index is 16 bit. 1016 */ 1017 1018 /* bit 0..14: (some bits of) if_index of this port */ 1019 key = lp->lp_ifp->if_index; 1020 /* bit 15: 1 */ 1021 key |= 0x8000; 1022 } else { 1023 u_int subtype = IFM_SUBTYPE(media); 1024 1025 KASSERT(IFM_TYPE(media) == IFM_ETHER, ("invalid media type")); 1026 KASSERT((media & IFM_FDX) != 0, ("aggregating HDX interface")); 1027 1028 /* bit 0..4: IFM_SUBTYPE */ 1029 key = subtype; 1030 /* bit 5..14: (some bits of) if_index of lagg device */ 1031 key |= 0x7fe0 & ((sc->sc_ifp->if_index) << 5); 1032 /* bit 15: 0 */ 1033 } 1034 return (htons(key)); 1035} 1036 1037static void 1038lacp_aggregator_addref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1039{ 1040#if defined(LACP_DEBUG) 1041 char buf[LACP_LAGIDSTR_MAX+1]; 1042#endif 1043 1044 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1045 __func__, 1046 lacp_format_lagid(&la->la_actor, &la->la_partner, 1047 buf, sizeof(buf)), 1048 la->la_refcnt, la->la_refcnt + 1)); 1049 1050 KASSERT(la->la_refcnt > 0, ("refcount <= 0")); 1051 la->la_refcnt++; 1052 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcount")); 1053} 1054 1055static void 1056lacp_aggregator_delref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1057{ 1058#if defined(LACP_DEBUG) 1059 char buf[LACP_LAGIDSTR_MAX+1]; 1060#endif 1061 1062 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1063 __func__, 1064 lacp_format_lagid(&la->la_actor, &la->la_partner, 1065 buf, sizeof(buf)), 1066 la->la_refcnt, la->la_refcnt - 1)); 1067 1068 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcnt")); 1069 la->la_refcnt--; 1070 if (la->la_refcnt > 0) { 1071 return; 1072 } 1073 1074 KASSERT(la->la_refcnt == 0, ("refcount not zero")); 1075 KASSERT(lsc->lsc_active_aggregator != la, ("aggregator active")); 1076 1077 TAILQ_REMOVE(&lsc->lsc_aggregators, la, la_q); 1078 1079 free(la, M_DEVBUF); 1080} 1081 1082/* 1083 * lacp_aggregator_get: allocate an aggregator. 1084 */ 1085 1086static struct lacp_aggregator * 1087lacp_aggregator_get(struct lacp_softc *lsc, struct lacp_port *lp) 1088{ 1089 struct lacp_aggregator *la; 1090 1091 la = malloc(sizeof(*la), M_DEVBUF, M_NOWAIT); 1092 if (la) { 1093 la->la_refcnt = 1; 1094 la->la_nports = 0; 1095 TAILQ_INIT(&la->la_ports); 1096 la->la_pending = 0; 1097 TAILQ_INSERT_TAIL(&lsc->lsc_aggregators, la, la_q); 1098 } 1099 1100 return (la); 1101} 1102 1103/* 1104 * lacp_fill_aggregator_id: setup a newly allocated aggregator from a port. 1105 */ 1106 1107static void 1108lacp_fill_aggregator_id(struct lacp_aggregator *la, const struct lacp_port *lp) 1109{ 1110 lacp_fill_aggregator_id_peer(&la->la_partner, &lp->lp_partner); 1111 lacp_fill_aggregator_id_peer(&la->la_actor, &lp->lp_actor); 1112 1113 la->la_actor.lip_state = lp->lp_state & LACP_STATE_AGGREGATION; 1114} 1115 1116static void 1117lacp_fill_aggregator_id_peer(struct lacp_peerinfo *lpi_aggr, 1118 const struct lacp_peerinfo *lpi_port) 1119{ 1120 memset(lpi_aggr, 0, sizeof(*lpi_aggr)); 1121 lpi_aggr->lip_systemid = lpi_port->lip_systemid; 1122 lpi_aggr->lip_key = lpi_port->lip_key; 1123} 1124 1125/* 1126 * lacp_aggregator_is_compatible: check if a port can join to an aggregator. 1127 */ 1128 1129static int 1130lacp_aggregator_is_compatible(const struct lacp_aggregator *la, 1131 const struct lacp_port *lp) 1132{ 1133 if (!(lp->lp_state & LACP_STATE_AGGREGATION) || 1134 !(lp->lp_partner.lip_state & LACP_STATE_AGGREGATION)) { 1135 return (0); 1136 } 1137 1138 if (!(la->la_actor.lip_state & LACP_STATE_AGGREGATION)) { 1139 return (0); 1140 } 1141 1142 if (!lacp_peerinfo_is_compatible(&la->la_partner, &lp->lp_partner)) { 1143 return (0); 1144 } 1145 1146 if (!lacp_peerinfo_is_compatible(&la->la_actor, &lp->lp_actor)) { 1147 return (0); 1148 } 1149 1150 return (1); 1151} 1152 1153static int 1154lacp_peerinfo_is_compatible(const struct lacp_peerinfo *a, 1155 const struct lacp_peerinfo *b) 1156{ 1157 if (memcmp(&a->lip_systemid, &b->lip_systemid, 1158 sizeof(a->lip_systemid))) { 1159 return (0); 1160 } 1161 1162 if (memcmp(&a->lip_key, &b->lip_key, sizeof(a->lip_key))) { 1163 return (0); 1164 } 1165 1166 return (1); 1167} 1168 1169static void 1170lacp_port_enable(struct lacp_port *lp) 1171{ 1172 lp->lp_state |= LACP_STATE_AGGREGATION; 1173} 1174 1175static void 1176lacp_port_disable(struct lacp_port *lp) 1177{ 1178 lacp_set_mux(lp, LACP_MUX_DETACHED); 1179 1180 lp->lp_state &= ~LACP_STATE_AGGREGATION; 1181 lp->lp_selected = LACP_UNSELECTED; 1182 lacp_sm_rx_record_default(lp); 1183 lp->lp_partner.lip_state &= ~LACP_STATE_AGGREGATION; 1184 lp->lp_state &= ~LACP_STATE_EXPIRED; 1185} 1186 1187/* 1188 * lacp_select: select an aggregator. create one if necessary. 1189 */ 1190static void 1191lacp_select(struct lacp_port *lp) 1192{ 1193 struct lacp_softc *lsc = lp->lp_lsc; 1194 struct lacp_aggregator *la; 1195#if defined(LACP_DEBUG) 1196 char buf[LACP_LAGIDSTR_MAX+1]; 1197#endif 1198 1199 if (lp->lp_aggregator) { 1200 return; 1201 } 1202 1203 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1204 ("timer_wait_while still active")); 1205 1206 LACP_DPRINTF((lp, "port lagid=%s\n", 1207 lacp_format_lagid(&lp->lp_actor, &lp->lp_partner, 1208 buf, sizeof(buf)))); 1209 1210 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 1211 if (lacp_aggregator_is_compatible(la, lp)) { 1212 break; 1213 } 1214 } 1215 1216 if (la == NULL) { 1217 la = lacp_aggregator_get(lsc, lp); 1218 if (la == NULL) { 1219 LACP_DPRINTF((lp, "aggregator creation failed\n")); 1220 1221 /* 1222 * will retry on the next tick. 1223 */ 1224 1225 return; 1226 } 1227 lacp_fill_aggregator_id(la, lp); 1228 LACP_DPRINTF((lp, "aggregator created\n")); 1229 } else { 1230 LACP_DPRINTF((lp, "compatible aggregator found\n")); 1231 if (la->la_refcnt == LACP_MAX_PORTS) 1232 return; 1233 lacp_aggregator_addref(lsc, la); 1234 } 1235 1236 LACP_DPRINTF((lp, "aggregator lagid=%s\n", 1237 lacp_format_lagid(&la->la_actor, &la->la_partner, 1238 buf, sizeof(buf)))); 1239 1240 lp->lp_aggregator = la; 1241 lp->lp_selected = LACP_SELECTED; 1242} 1243 1244/* 1245 * lacp_unselect: finish unselect/detach process. 1246 */ 1247 1248static void 1249lacp_unselect(struct lacp_port *lp) 1250{ 1251 struct lacp_softc *lsc = lp->lp_lsc; 1252 struct lacp_aggregator *la = lp->lp_aggregator; 1253 1254 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1255 ("timer_wait_while still active")); 1256 1257 if (la == NULL) { 1258 return; 1259 } 1260 1261 lp->lp_aggregator = NULL; 1262 lacp_aggregator_delref(lsc, la); 1263} 1264 1265/* mux machine */ 1266 1267static void 1268lacp_sm_mux(struct lacp_port *lp) 1269{ 1270 enum lacp_mux_state new_state; 1271 boolean_t p_sync = 1272 (lp->lp_partner.lip_state & LACP_STATE_SYNC) != 0; 1273 boolean_t p_collecting = 1274 (lp->lp_partner.lip_state & LACP_STATE_COLLECTING) != 0; 1275 enum lacp_selected selected = lp->lp_selected; 1276 struct lacp_aggregator *la; 1277 1278 /* LACP_DPRINTF((lp, "%s: state %d\n", __func__, lp->lp_mux_state)); */ 1279 1280re_eval: 1281 la = lp->lp_aggregator; 1282 KASSERT(lp->lp_mux_state == LACP_MUX_DETACHED || la != NULL, 1283 ("MUX not detached")); 1284 new_state = lp->lp_mux_state; 1285 switch (lp->lp_mux_state) { 1286 case LACP_MUX_DETACHED: 1287 if (selected != LACP_UNSELECTED) { 1288 new_state = LACP_MUX_WAITING; 1289 } 1290 break; 1291 case LACP_MUX_WAITING: 1292 KASSERT(la->la_pending > 0 || 1293 !LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1294 ("timer_wait_while still active")); 1295 if (selected == LACP_SELECTED && la->la_pending == 0) { 1296 new_state = LACP_MUX_ATTACHED; 1297 } else if (selected == LACP_UNSELECTED) { 1298 new_state = LACP_MUX_DETACHED; 1299 } 1300 break; 1301 case LACP_MUX_ATTACHED: 1302 if (selected == LACP_SELECTED && p_sync) { 1303 new_state = LACP_MUX_COLLECTING; 1304 } else if (selected != LACP_SELECTED) { 1305 new_state = LACP_MUX_DETACHED; 1306 } 1307 break; 1308 case LACP_MUX_COLLECTING: 1309 if (selected == LACP_SELECTED && p_sync && p_collecting) { 1310 new_state = LACP_MUX_DISTRIBUTING; 1311 } else if (selected != LACP_SELECTED || !p_sync) { 1312 new_state = LACP_MUX_ATTACHED; 1313 } 1314 break; 1315 case LACP_MUX_DISTRIBUTING: 1316 if (selected != LACP_SELECTED || !p_sync || !p_collecting) { 1317 new_state = LACP_MUX_COLLECTING; 1318 } 1319 break; 1320 default: 1321 panic("%s: unknown state", __func__); 1322 } 1323 1324 if (lp->lp_mux_state == new_state) { 1325 return; 1326 } 1327 1328 lacp_set_mux(lp, new_state); 1329 goto re_eval; 1330} 1331 1332static void 1333lacp_set_mux(struct lacp_port *lp, enum lacp_mux_state new_state) 1334{ 1335 struct lacp_aggregator *la = lp->lp_aggregator; 1336 1337 if (lp->lp_mux_state == new_state) { 1338 return; 1339 } 1340 1341 switch (new_state) { 1342 case LACP_MUX_DETACHED: 1343 lp->lp_state &= ~LACP_STATE_SYNC; 1344 lacp_disable_distributing(lp); 1345 lacp_disable_collecting(lp); 1346 lacp_sm_assert_ntt(lp); 1347 /* cancel timer */ 1348 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE)) { 1349 KASSERT(la->la_pending > 0, 1350 ("timer_wait_while not active")); 1351 la->la_pending--; 1352 } 1353 LACP_TIMER_DISARM(lp, LACP_TIMER_WAIT_WHILE); 1354 lacp_unselect(lp); 1355 break; 1356 case LACP_MUX_WAITING: 1357 LACP_TIMER_ARM(lp, LACP_TIMER_WAIT_WHILE, 1358 LACP_AGGREGATE_WAIT_TIME); 1359 la->la_pending++; 1360 break; 1361 case LACP_MUX_ATTACHED: 1362 lp->lp_state |= LACP_STATE_SYNC; 1363 lacp_disable_collecting(lp); 1364 lacp_sm_assert_ntt(lp); 1365 break; 1366 case LACP_MUX_COLLECTING: 1367 lacp_enable_collecting(lp); 1368 lacp_disable_distributing(lp); 1369 lacp_sm_assert_ntt(lp); 1370 break; 1371 case LACP_MUX_DISTRIBUTING: 1372 lacp_enable_distributing(lp); 1373 break; 1374 default: 1375 panic("%s: unknown state", __func__); 1376 } 1377 1378 LACP_DPRINTF((lp, "mux_state %d -> %d\n", lp->lp_mux_state, new_state)); 1379 1380 lp->lp_mux_state = new_state; 1381} 1382 1383static void 1384lacp_sm_mux_timer(struct lacp_port *lp) 1385{ 1386 struct lacp_aggregator *la = lp->lp_aggregator; 1387#if defined(LACP_DEBUG) 1388 char buf[LACP_LAGIDSTR_MAX+1]; 1389#endif 1390 1391 KASSERT(la->la_pending > 0, ("no pending event")); 1392 1393 LACP_DPRINTF((lp, "%s: aggregator %s, pending %d -> %d\n", __func__, 1394 lacp_format_lagid(&la->la_actor, &la->la_partner, 1395 buf, sizeof(buf)), 1396 la->la_pending, la->la_pending - 1)); 1397 1398 la->la_pending--; 1399} 1400 1401/* periodic transmit machine */ 1402 1403static void 1404lacp_sm_ptx_update_timeout(struct lacp_port *lp, uint8_t oldpstate) 1405{ 1406 if (LACP_STATE_EQ(oldpstate, lp->lp_partner.lip_state, 1407 LACP_STATE_TIMEOUT)) { 1408 return; 1409 } 1410 1411 LACP_DPRINTF((lp, "partner timeout changed\n")); 1412 1413 /* 1414 * FAST_PERIODIC -> SLOW_PERIODIC 1415 * or 1416 * SLOW_PERIODIC (-> PERIODIC_TX) -> FAST_PERIODIC 1417 * 1418 * let lacp_sm_ptx_tx_schedule to update timeout. 1419 */ 1420 1421 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1422 1423 /* 1424 * if timeout has been shortened, assert NTT. 1425 */ 1426 1427 if ((lp->lp_partner.lip_state & LACP_STATE_TIMEOUT)) { 1428 lacp_sm_assert_ntt(lp); 1429 } 1430} 1431 1432static void 1433lacp_sm_ptx_tx_schedule(struct lacp_port *lp) 1434{ 1435 int timeout; 1436 1437 if (!(lp->lp_state & LACP_STATE_ACTIVITY) && 1438 !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) { 1439 1440 /* 1441 * NO_PERIODIC 1442 */ 1443 1444 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1445 return; 1446 } 1447 1448 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_PERIODIC)) { 1449 return; 1450 } 1451 1452 timeout = (lp->lp_partner.lip_state & LACP_STATE_TIMEOUT) ? 1453 LACP_FAST_PERIODIC_TIME : LACP_SLOW_PERIODIC_TIME; 1454 1455 LACP_TIMER_ARM(lp, LACP_TIMER_PERIODIC, timeout); 1456} 1457 1458static void 1459lacp_sm_ptx_timer(struct lacp_port *lp) 1460{ 1461 lacp_sm_assert_ntt(lp); 1462} 1463 1464static void 1465lacp_sm_rx(struct lacp_port *lp, const struct lacpdu *du) 1466{ 1467 int timeout; 1468 1469 /* 1470 * check LACP_DISABLED first 1471 */ 1472 1473 if (!(lp->lp_state & LACP_STATE_AGGREGATION)) { 1474 return; 1475 } 1476 1477 /* 1478 * check loopback condition. 1479 */ 1480 1481 if (!lacp_compare_systemid(&du->ldu_actor.lip_systemid, 1482 &lp->lp_actor.lip_systemid)) { 1483 return; 1484 } 1485 1486 /* 1487 * EXPIRED, DEFAULTED, CURRENT -> CURRENT 1488 */ 1489 1490 lacp_sm_rx_update_selected(lp, du); 1491 lacp_sm_rx_update_ntt(lp, du); 1492 lacp_sm_rx_record_pdu(lp, du); 1493 1494 timeout = (lp->lp_state & LACP_STATE_TIMEOUT) ? 1495 LACP_SHORT_TIMEOUT_TIME : LACP_LONG_TIMEOUT_TIME; 1496 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, timeout); 1497 1498 lp->lp_state &= ~LACP_STATE_EXPIRED; 1499 1500 /* 1501 * kick transmit machine without waiting the next tick. 1502 */ 1503 1504 lacp_sm_tx(lp); 1505} 1506 1507static void 1508lacp_sm_rx_set_expired(struct lacp_port *lp) 1509{ 1510 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1511 lp->lp_partner.lip_state |= LACP_STATE_TIMEOUT; 1512 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, LACP_SHORT_TIMEOUT_TIME); 1513 lp->lp_state |= LACP_STATE_EXPIRED; 1514} 1515 1516static void 1517lacp_sm_rx_timer(struct lacp_port *lp) 1518{ 1519 if ((lp->lp_state & LACP_STATE_EXPIRED) == 0) { 1520 /* CURRENT -> EXPIRED */ 1521 LACP_DPRINTF((lp, "%s: CURRENT -> EXPIRED\n", __func__)); 1522 lacp_sm_rx_set_expired(lp); 1523 } else { 1524 /* EXPIRED -> DEFAULTED */ 1525 LACP_DPRINTF((lp, "%s: EXPIRED -> DEFAULTED\n", __func__)); 1526 lacp_sm_rx_update_default_selected(lp); 1527 lacp_sm_rx_record_default(lp); 1528 lp->lp_state &= ~LACP_STATE_EXPIRED; 1529 } 1530} 1531 1532static void 1533lacp_sm_rx_record_pdu(struct lacp_port *lp, const struct lacpdu *du) 1534{ 1535 boolean_t active; 1536 uint8_t oldpstate; 1537#if defined(LACP_DEBUG) 1538 char buf[LACP_STATESTR_MAX+1]; 1539#endif 1540 1541 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1542 1543 oldpstate = lp->lp_partner.lip_state; 1544 1545 active = (du->ldu_actor.lip_state & LACP_STATE_ACTIVITY) 1546 || ((lp->lp_state & LACP_STATE_ACTIVITY) && 1547 (du->ldu_partner.lip_state & LACP_STATE_ACTIVITY)); 1548 1549 lp->lp_partner = du->ldu_actor; 1550 if (active && 1551 ((LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1552 LACP_STATE_AGGREGATION) && 1553 !lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner)) 1554 || (du->ldu_partner.lip_state & LACP_STATE_AGGREGATION) == 0)) { 1555 /* XXX nothing? */ 1556 } else { 1557 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1558 } 1559 1560 lp->lp_state &= ~LACP_STATE_DEFAULTED; 1561 1562 if (oldpstate != lp->lp_partner.lip_state) { 1563 LACP_DPRINTF((lp, "old pstate %s\n", 1564 lacp_format_state(oldpstate, buf, sizeof(buf)))); 1565 LACP_DPRINTF((lp, "new pstate %s\n", 1566 lacp_format_state(lp->lp_partner.lip_state, buf, 1567 sizeof(buf)))); 1568 } 1569 1570 lacp_sm_ptx_update_timeout(lp, oldpstate); 1571} 1572 1573static void 1574lacp_sm_rx_update_ntt(struct lacp_port *lp, const struct lacpdu *du) 1575{ 1576 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1577 1578 if (lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner) || 1579 !LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1580 LACP_STATE_ACTIVITY | LACP_STATE_SYNC | LACP_STATE_AGGREGATION)) { 1581 LACP_DPRINTF((lp, "%s: assert ntt\n", __func__)); 1582 lacp_sm_assert_ntt(lp); 1583 } 1584} 1585 1586static void 1587lacp_sm_rx_record_default(struct lacp_port *lp) 1588{ 1589 uint8_t oldpstate; 1590 1591 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1592 1593 oldpstate = lp->lp_partner.lip_state; 1594 lp->lp_partner = lacp_partner_admin; 1595 lp->lp_state |= LACP_STATE_DEFAULTED; 1596 lacp_sm_ptx_update_timeout(lp, oldpstate); 1597} 1598 1599static void 1600lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *lp, 1601 const struct lacp_peerinfo *info) 1602{ 1603 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1604 1605 if (lacp_compare_peerinfo(&lp->lp_partner, info) || 1606 !LACP_STATE_EQ(lp->lp_partner.lip_state, info->lip_state, 1607 LACP_STATE_AGGREGATION)) { 1608 lp->lp_selected = LACP_UNSELECTED; 1609 /* mux machine will clean up lp->lp_aggregator */ 1610 } 1611} 1612 1613static void 1614lacp_sm_rx_update_selected(struct lacp_port *lp, const struct lacpdu *du) 1615{ 1616 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1617 1618 lacp_sm_rx_update_selected_from_peerinfo(lp, &du->ldu_actor); 1619} 1620 1621static void 1622lacp_sm_rx_update_default_selected(struct lacp_port *lp) 1623{ 1624 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1625 1626 lacp_sm_rx_update_selected_from_peerinfo(lp, &lacp_partner_admin); 1627} 1628 1629/* transmit machine */ 1630 1631static void 1632lacp_sm_tx(struct lacp_port *lp) 1633{ 1634 int error; 1635 1636 if (!(lp->lp_state & LACP_STATE_AGGREGATION) 1637#if 1 1638 || (!(lp->lp_state & LACP_STATE_ACTIVITY) 1639 && !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) 1640#endif 1641 ) { 1642 lp->lp_flags &= ~LACP_PORT_NTT; 1643 } 1644 1645 if (!(lp->lp_flags & LACP_PORT_NTT)) { 1646 return; 1647 } 1648 1649 /* Rate limit to 3 PDUs per LACP_FAST_PERIODIC_TIME */ 1650 if (ppsratecheck(&lp->lp_last_lacpdu, &lp->lp_lacpdu_sent, 1651 (3 / LACP_FAST_PERIODIC_TIME)) == 0) { 1652 LACP_DPRINTF((lp, "rate limited pdu\n")); 1653 return; 1654 } 1655 1656 error = lacp_xmit_lacpdu(lp); 1657 1658 if (error == 0) { 1659 lp->lp_flags &= ~LACP_PORT_NTT; 1660 } else { 1661 LACP_DPRINTF((lp, "lacpdu transmit failure, error %d\n", 1662 error)); 1663 } 1664} 1665 1666static void 1667lacp_sm_assert_ntt(struct lacp_port *lp) 1668{ 1669 1670 lp->lp_flags |= LACP_PORT_NTT; 1671} 1672 1673static void 1674lacp_run_timers(struct lacp_port *lp) 1675{ 1676 int i; 1677 1678 for (i = 0; i < LACP_NTIMER; i++) { 1679 KASSERT(lp->lp_timer[i] >= 0, 1680 ("invalid timer value %d", lp->lp_timer[i])); 1681 if (lp->lp_timer[i] == 0) { 1682 continue; 1683 } else if (--lp->lp_timer[i] <= 0) { 1684 if (lacp_timer_funcs[i]) { 1685 (*lacp_timer_funcs[i])(lp); 1686 } 1687 } 1688 } 1689} 1690 1691int 1692lacp_marker_input(struct lacp_port *lp, struct mbuf *m) 1693{ 1694 struct lacp_softc *lsc = lp->lp_lsc; 1695 struct lagg_port *lgp = lp->lp_lagg; 1696 struct lacp_port *lp2; 1697 struct markerdu *mdu; 1698 int error = 0; 1699 int pending = 0; 1700 1701 if (m->m_pkthdr.len != sizeof(*mdu)) { 1702 goto bad; 1703 } 1704 1705 if ((m->m_flags & M_MCAST) == 0) { 1706 goto bad; 1707 } 1708 1709 if (m->m_len < sizeof(*mdu)) { 1710 m = m_pullup(m, sizeof(*mdu)); 1711 if (m == NULL) { 1712 return (ENOMEM); 1713 } 1714 } 1715 1716 mdu = mtod(m, struct markerdu *); 1717 1718 if (memcmp(&mdu->mdu_eh.ether_dhost, 1719 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 1720 goto bad; 1721 } 1722 1723 if (mdu->mdu_sph.sph_version != 1) { 1724 goto bad; 1725 } 1726 1727 switch (mdu->mdu_tlv.tlv_type) { 1728 case MARKER_TYPE_INFO: 1729 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 1730 marker_info_tlv_template, TRUE)) { 1731 goto bad; 1732 } 1733 mdu->mdu_tlv.tlv_type = MARKER_TYPE_RESPONSE; 1734 memcpy(&mdu->mdu_eh.ether_dhost, 1735 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN); 1736 memcpy(&mdu->mdu_eh.ether_shost, 1737 lgp->lp_lladdr, ETHER_ADDR_LEN); 1738 error = lagg_enqueue(lp->lp_ifp, m); 1739 break; 1740 1741 case MARKER_TYPE_RESPONSE: 1742 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 1743 marker_response_tlv_template, TRUE)) { 1744 goto bad; 1745 } 1746 LACP_DPRINTF((lp, "marker response, port=%u, sys=%6D, id=%u\n", 1747 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, 1748 ":", ntohl(mdu->mdu_info.mi_rq_xid))); 1749 1750 /* Verify that it is the last marker we sent out */ 1751 if (memcmp(&mdu->mdu_info, &lp->lp_marker, 1752 sizeof(struct lacp_markerinfo))) 1753 goto bad; 1754 1755 LACP_LOCK(lsc); 1756 lp->lp_flags &= ~LACP_PORT_MARK; 1757 1758 if (lsc->lsc_suppress_distributing) { 1759 /* Check if any ports are waiting for a response */ 1760 LIST_FOREACH(lp2, &lsc->lsc_ports, lp_next) { 1761 if (lp2->lp_flags & LACP_PORT_MARK) { 1762 pending = 1; 1763 break; 1764 } 1765 } 1766 1767 if (pending == 0) { 1768 /* All interface queues are clear */ 1769 LACP_DPRINTF((NULL, "queue flush complete\n")); 1770 lsc->lsc_suppress_distributing = FALSE; 1771 } 1772 } 1773 LACP_UNLOCK(lsc); 1774 m_freem(m); 1775 break; 1776 1777 default: 1778 goto bad; 1779 } 1780 1781 return (error); 1782 1783bad: 1784 LACP_DPRINTF((lp, "bad marker frame\n")); 1785 m_freem(m); 1786 return (EINVAL); 1787} 1788 1789static int 1790tlv_check(const void *p, size_t size, const struct tlvhdr *tlv, 1791 const struct tlv_template *tmpl, boolean_t check_type) 1792{ 1793 while (/* CONSTCOND */ 1) { 1794 if ((const char *)tlv - (const char *)p + sizeof(*tlv) > size) { 1795 return (EINVAL); 1796 } 1797 if ((check_type && tlv->tlv_type != tmpl->tmpl_type) || 1798 tlv->tlv_length != tmpl->tmpl_length) { 1799 return (EINVAL); 1800 } 1801 if (tmpl->tmpl_type == 0) { 1802 break; 1803 } 1804 tlv = (const struct tlvhdr *) 1805 ((const char *)tlv + tlv->tlv_length); 1806 tmpl++; 1807 } 1808 1809 return (0); 1810} 1811 1812#if defined(LACP_DEBUG) 1813const char * 1814lacp_format_mac(const uint8_t *mac, char *buf, size_t buflen) 1815{ 1816 snprintf(buf, buflen, "%02X-%02X-%02X-%02X-%02X-%02X", 1817 (int)mac[0], 1818 (int)mac[1], 1819 (int)mac[2], 1820 (int)mac[3], 1821 (int)mac[4], 1822 (int)mac[5]); 1823 1824 return (buf); 1825} 1826 1827const char * 1828lacp_format_systemid(const struct lacp_systemid *sysid, 1829 char *buf, size_t buflen) 1830{ 1831 char macbuf[LACP_MACSTR_MAX+1]; 1832 1833 snprintf(buf, buflen, "%04X,%s", 1834 ntohs(sysid->lsi_prio), 1835 lacp_format_mac(sysid->lsi_mac, macbuf, sizeof(macbuf))); 1836 1837 return (buf); 1838} 1839 1840const char * 1841lacp_format_portid(const struct lacp_portid *portid, char *buf, size_t buflen) 1842{ 1843 snprintf(buf, buflen, "%04X,%04X", 1844 ntohs(portid->lpi_prio), 1845 ntohs(portid->lpi_portno)); 1846 1847 return (buf); 1848} 1849 1850const char * 1851lacp_format_partner(const struct lacp_peerinfo *peer, char *buf, size_t buflen) 1852{ 1853 char sysid[LACP_SYSTEMIDSTR_MAX+1]; 1854 char portid[LACP_PORTIDSTR_MAX+1]; 1855 1856 snprintf(buf, buflen, "(%s,%04X,%s)", 1857 lacp_format_systemid(&peer->lip_systemid, sysid, sizeof(sysid)), 1858 ntohs(peer->lip_key), 1859 lacp_format_portid(&peer->lip_portid, portid, sizeof(portid))); 1860 1861 return (buf); 1862} 1863 1864const char * 1865lacp_format_lagid(const struct lacp_peerinfo *a, 1866 const struct lacp_peerinfo *b, char *buf, size_t buflen) 1867{ 1868 char astr[LACP_PARTNERSTR_MAX+1]; 1869 char bstr[LACP_PARTNERSTR_MAX+1]; 1870 1871#if 0 1872 /* 1873 * there's a convention to display small numbered peer 1874 * in the left. 1875 */ 1876 1877 if (lacp_compare_peerinfo(a, b) > 0) { 1878 const struct lacp_peerinfo *t; 1879 1880 t = a; 1881 a = b; 1882 b = t; 1883 } 1884#endif 1885 1886 snprintf(buf, buflen, "[%s,%s]", 1887 lacp_format_partner(a, astr, sizeof(astr)), 1888 lacp_format_partner(b, bstr, sizeof(bstr))); 1889 1890 return (buf); 1891} 1892 1893const char * 1894lacp_format_lagid_aggregator(const struct lacp_aggregator *la, 1895 char *buf, size_t buflen) 1896{ 1897 if (la == NULL) { 1898 return ("(none)"); 1899 } 1900 1901 return (lacp_format_lagid(&la->la_actor, &la->la_partner, buf, buflen)); 1902} 1903 1904const char * 1905lacp_format_state(uint8_t state, char *buf, size_t buflen) 1906{ 1907 snprintf(buf, buflen, "%b", state, LACP_STATE_BITS); 1908 return (buf); 1909} 1910 1911static void 1912lacp_dump_lacpdu(const struct lacpdu *du) 1913{ 1914 char buf[LACP_PARTNERSTR_MAX+1]; 1915 char buf2[LACP_STATESTR_MAX+1]; 1916 1917 printf("actor=%s\n", 1918 lacp_format_partner(&du->ldu_actor, buf, sizeof(buf))); 1919 printf("actor.state=%s\n", 1920 lacp_format_state(du->ldu_actor.lip_state, buf2, sizeof(buf2))); 1921 printf("partner=%s\n", 1922 lacp_format_partner(&du->ldu_partner, buf, sizeof(buf))); 1923 printf("partner.state=%s\n", 1924 lacp_format_state(du->ldu_partner.lip_state, buf2, sizeof(buf2))); 1925 1926 printf("maxdelay=%d\n", ntohs(du->ldu_collector.lci_maxdelay)); 1927} 1928 1929static void 1930lacp_dprintf(const struct lacp_port *lp, const char *fmt, ...) 1931{ 1932 va_list va; 1933 1934 if (lp) { 1935 printf("%s: ", lp->lp_ifp->if_xname); 1936 } 1937 1938 va_start(va, fmt); 1939 vprintf(fmt, va); 1940 va_end(va); 1941} 1942#endif 1943