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("$FreeBSD$"); 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 62 const uint8_t ethermulticastaddr_slowprotocols[ETHER_ADDR_LEN] = 63 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x02 }; 64 65 static const struct tlv_template lacp_info_tlv_template[] = { 66 { LACP_TYPE_ACTORINFO, 67 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) }, 68 { LACP_TYPE_PARTNERINFO, 69 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) }, 70 { LACP_TYPE_COLLECTORINFO, 71 sizeof(struct tlvhdr) + sizeof(struct lacp_collectorinfo) }, 72 { 0, 0 }, 73 }; 74 75 static 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 81 static 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 87 typedef void (*lacp_timer_func_t)(struct lacp_port *); 88 89 static void lacp_fill_actorinfo(struct lacp_port *, struct lacp_peerinfo *); 90 static void lacp_fill_markerinfo(struct lacp_port *, 91 struct lacp_markerinfo *); 92 93 static uint64_t lacp_aggregator_bandwidth(struct lacp_aggregator *); 94 static void lacp_suppress_distributing(struct lacp_softc *, 95 struct lacp_aggregator *); 96 static void lacp_transit_expire(void *); 97 static void lacp_update_portmap(struct lacp_softc *); 98 static void lacp_select_active_aggregator(struct lacp_softc *); 99 static uint16_t lacp_compose_key(struct lacp_port *); 100 static int tlv_check(const void *, size_t, const struct tlvhdr *, 101 const struct tlv_template *, boolean_t); 102 static void lacp_tick(void *); 103 104 static void lacp_fill_aggregator_id(struct lacp_aggregator *, 105 const struct lacp_port *); 106 static void lacp_fill_aggregator_id_peer(struct lacp_peerinfo *, 107 const struct lacp_peerinfo *); 108 static int lacp_aggregator_is_compatible(const struct lacp_aggregator *, 109 const struct lacp_port *); 110 static int lacp_peerinfo_is_compatible(const struct lacp_peerinfo *, 111 const struct lacp_peerinfo *); 112 113 static struct lacp_aggregator *lacp_aggregator_get(struct lacp_softc *, 114 struct lacp_port *); 115 static void lacp_aggregator_addref(struct lacp_softc *, 116 struct lacp_aggregator *); 117 static void lacp_aggregator_delref(struct lacp_softc *, 118 struct lacp_aggregator *); 119 120 /* receive machine */ 121 122 static int lacp_pdu_input(struct lacp_port *, struct mbuf *); 123 static int lacp_marker_input(struct lacp_port *, struct mbuf *); 124 static void lacp_sm_rx(struct lacp_port *, const struct lacpdu *); 125 static void lacp_sm_rx_timer(struct lacp_port *); 126 static void lacp_sm_rx_set_expired(struct lacp_port *); 127 static void lacp_sm_rx_update_ntt(struct lacp_port *, 128 const struct lacpdu *); 129 static void lacp_sm_rx_record_pdu(struct lacp_port *, 130 const struct lacpdu *); 131 static void lacp_sm_rx_update_selected(struct lacp_port *, 132 const struct lacpdu *); 133 static void lacp_sm_rx_record_default(struct lacp_port *); 134 static void lacp_sm_rx_update_default_selected(struct lacp_port *); 135 static void lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *, 136 const struct lacp_peerinfo *); 137 138 /* mux machine */ 139 140 static void lacp_sm_mux(struct lacp_port *); 141 static void lacp_set_mux(struct lacp_port *, enum lacp_mux_state); 142 static void lacp_sm_mux_timer(struct lacp_port *); 143 144 /* periodic transmit machine */ 145 146 static void lacp_sm_ptx_update_timeout(struct lacp_port *, uint8_t); 147 static void lacp_sm_ptx_tx_schedule(struct lacp_port *); 148 static void lacp_sm_ptx_timer(struct lacp_port *); 149 150 /* transmit machine */ 151 152 static void lacp_sm_tx(struct lacp_port *); 153 static void lacp_sm_assert_ntt(struct lacp_port *); 154 155 static void lacp_run_timers(struct lacp_port *); 156 static int lacp_compare_peerinfo(const struct lacp_peerinfo *, 157 const struct lacp_peerinfo *); 158 static int lacp_compare_systemid(const struct lacp_systemid *, 159 const struct lacp_systemid *); 160 static void lacp_port_enable(struct lacp_port *); 161 static void lacp_port_disable(struct lacp_port *); 162 static void lacp_select(struct lacp_port *); 163 static void lacp_unselect(struct lacp_port *); 164 static void lacp_disable_collecting(struct lacp_port *); 165 static void lacp_enable_collecting(struct lacp_port *); 166 static void lacp_disable_distributing(struct lacp_port *); 167 static void lacp_enable_distributing(struct lacp_port *); 168 static int lacp_xmit_lacpdu(struct lacp_port *); 169 static int lacp_xmit_marker(struct lacp_port *); 170 171 #if defined(LACP_DEBUG) 172 static void lacp_dump_lacpdu(const struct lacpdu *); 173 static const char *lacp_format_partner(const struct lacp_peerinfo *, char *, 174 size_t); 175 static const char *lacp_format_lagid(const struct lacp_peerinfo *, 176 const struct lacp_peerinfo *, char *, size_t); 177 static const char *lacp_format_lagid_aggregator(const struct lacp_aggregator *, 178 char *, size_t); 179 static const char *lacp_format_state(uint8_t, char *, size_t); 180 static const char *lacp_format_mac(const uint8_t *, char *, size_t); 181 static const char *lacp_format_systemid(const struct lacp_systemid *, char *, 182 size_t); 183 static const char *lacp_format_portid(const struct lacp_portid *, char *, 184 size_t); 185 static 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 */ 196 197 static 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 }; 209 210 static 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 }; 215 216 struct mbuf * 217 lacp_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 */ 245 static int 246 lacp_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); 304 305 bad: 306 m_freem(m); 307 return (EINVAL); 308 } 309 310 static void 311 lacp_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 } 323 324 static void 325 lacp_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 } 334 335 static int 336 lacp_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 } 388 389 static int 390 lacp_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 } 429 430 void 431 lacp_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 } 474 475 static void 476 lacp_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 } 494 495 int 496 lacp_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 } 550 551 void 552 lacp_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 } 575 576 void 577 lacp_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 } 604 605 void 606 lacp_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 } 630 631 static void 632 lacp_disable_collecting(struct lacp_port *lp) 633 { 634 LACP_DPRINTF((lp, "collecting disabled\n")); 635 lp->lp_state &= ~LACP_STATE_COLLECTING; 636 } 637 638 static void 639 lacp_enable_collecting(struct lacp_port *lp) 640 { 641 LACP_DPRINTF((lp, "collecting enabled\n")); 642 lp->lp_state |= LACP_STATE_COLLECTING; 643 } 644 645 static void 646 lacp_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 } 681 682 static void 683 lacp_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 } 715 716 static void 717 lacp_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 } 726 727 int 728 lacp_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 } 755 756 int 757 lacp_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 } 774 775 void 776 lacp_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 } 784 785 void 786 lacp_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 } 795 796 struct lagg_port * 797 lacp_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 */ 828 829 static void 830 lacp_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 } 851 852 static int 853 lacp_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 } 858 859 static int 860 lacp_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 */ 867 static int 868 lacp_compare_portid(const struct lacp_portid *a, 869 const struct lacp_portid *b) 870 { 871 return (memcmp(a, b, sizeof(*a))); 872 } 873 #endif 874 875 static uint64_t 876 lacp_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 */ 900 901 static void 902 lacp_select_active_aggregator(struct lacp_softc *lsc) 903 { 904 struct lacp_aggregator *la; 905 struct lacp_aggregator *best_la = NULL; 906 uint64_t best_speed = 0; 907 #if defined(LACP_DEBUG) 908 char buf[LACP_LAGIDSTR_MAX+1]; 909 #endif /* defined(LACP_DEBUG) */ 910 911 LACP_DPRINTF((NULL, "%s:\n", __func__)); 912 913 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 914 uint64_t speed; 915 916 if (la->la_nports == 0) { 917 continue; 918 } 919 920 speed = lacp_aggregator_bandwidth(la); 921 LACP_DPRINTF((NULL, "%s, speed=%jd, nports=%d\n", 922 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 923 speed, la->la_nports)); 924 925 /* This aggregator is chosen if 926 * the partner has a better system priority 927 * or, the total aggregated speed is higher 928 * or, it is already the chosen aggregator 929 */ 930 if ((best_la != NULL && LACP_SYS_PRI(la->la_partner) < 931 LACP_SYS_PRI(best_la->la_partner)) || 932 speed > best_speed || 933 (speed == best_speed && 934 la == lsc->lsc_active_aggregator)) { 935 best_la = la; 936 best_speed = speed; 937 } 938 } 939 940 KASSERT(best_la == NULL || best_la->la_nports > 0, 941 ("invalid aggregator refcnt")); 942 KASSERT(best_la == NULL || !TAILQ_EMPTY(&best_la->la_ports), 943 ("invalid aggregator list")); 944 945 #if defined(LACP_DEBUG) 946 if (lsc->lsc_active_aggregator != best_la) { 947 LACP_DPRINTF((NULL, "active aggregator changed\n")); 948 LACP_DPRINTF((NULL, "old %s\n", 949 lacp_format_lagid_aggregator(lsc->lsc_active_aggregator, 950 buf, sizeof(buf)))); 951 } else { 952 LACP_DPRINTF((NULL, "active aggregator not changed\n")); 953 } 954 LACP_DPRINTF((NULL, "new %s\n", 955 lacp_format_lagid_aggregator(best_la, buf, sizeof(buf)))); 956 #endif /* defined(LACP_DEBUG) */ 957 958 if (lsc->lsc_active_aggregator != best_la) { 959 lsc->lsc_active_aggregator = best_la; 960 lacp_update_portmap(lsc); 961 if (best_la) { 962 lacp_suppress_distributing(lsc, best_la); 963 } 964 } 965 } 966 967 /* 968 * Updated the inactive portmap array with the new list of ports and 969 * make it live. 970 */ 971 static void 972 lacp_update_portmap(struct lacp_softc *lsc) 973 { 974 struct lacp_aggregator *la; 975 struct lacp_portmap *p; 976 struct lacp_port *lp; 977 u_int newmap; 978 int i; 979 980 newmap = lsc->lsc_activemap == 0 ? 1 : 0; 981 p = &lsc->lsc_pmap[newmap]; 982 la = lsc->lsc_active_aggregator; 983 bzero(p, sizeof(struct lacp_portmap)); 984 985 if (la != NULL && la->la_nports > 0) { 986 p->pm_count = la->la_nports; 987 i = 0; 988 TAILQ_FOREACH(lp, &la->la_ports, lp_dist_q) 989 p->pm_map[i++] = lp; 990 KASSERT(i == p->pm_count, ("Invalid port count")); 991 } 992 993 /* switch the active portmap over */ 994 atomic_store_rel_int(&lsc->lsc_activemap, newmap); 995 LACP_DPRINTF((NULL, "Set table %d with %d ports\n", 996 lsc->lsc_activemap, 997 lsc->lsc_pmap[lsc->lsc_activemap].pm_count)); 998 } 999 1000 static uint16_t 1001 lacp_compose_key(struct lacp_port *lp) 1002 { 1003 struct lagg_port *lgp = lp->lp_lagg; 1004 struct lagg_softc *sc = lgp->lp_softc; 1005 u_int media = lp->lp_media; 1006 uint16_t key; 1007 1008 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) { 1009 1010 /* 1011 * non-aggregatable links should have unique keys. 1012 * 1013 * XXX this isn't really unique as if_index is 16 bit. 1014 */ 1015 1016 /* bit 0..14: (some bits of) if_index of this port */ 1017 key = lp->lp_ifp->if_index; 1018 /* bit 15: 1 */ 1019 key |= 0x8000; 1020 } else { 1021 u_int subtype = IFM_SUBTYPE(media); 1022 1023 KASSERT(IFM_TYPE(media) == IFM_ETHER, ("invalid media type")); 1024 KASSERT((media & IFM_FDX) != 0, ("aggregating HDX interface")); 1025 1026 /* bit 0..4: IFM_SUBTYPE */ 1027 key = subtype; 1028 /* bit 5..14: (some bits of) if_index of lagg device */ 1029 key |= 0x7fe0 & ((sc->sc_ifp->if_index) << 5); 1030 /* bit 15: 0 */ 1031 } 1032 return (htons(key)); 1033 } 1034 1035 static void 1036 lacp_aggregator_addref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1037 { 1038 #if defined(LACP_DEBUG) 1039 char buf[LACP_LAGIDSTR_MAX+1]; 1040 #endif 1041 1042 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1043 __func__, 1044 lacp_format_lagid(&la->la_actor, &la->la_partner, 1045 buf, sizeof(buf)), 1046 la->la_refcnt, la->la_refcnt + 1)); 1047 1048 KASSERT(la->la_refcnt > 0, ("refcount <= 0")); 1049 la->la_refcnt++; 1050 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcount")); 1051 } 1052 1053 static void 1054 lacp_aggregator_delref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1055 { 1056 #if defined(LACP_DEBUG) 1057 char buf[LACP_LAGIDSTR_MAX+1]; 1058 #endif 1059 1060 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1061 __func__, 1062 lacp_format_lagid(&la->la_actor, &la->la_partner, 1063 buf, sizeof(buf)), 1064 la->la_refcnt, la->la_refcnt - 1)); 1065 1066 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcnt")); 1067 la->la_refcnt--; 1068 if (la->la_refcnt > 0) { 1069 return; 1070 } 1071 1072 KASSERT(la->la_refcnt == 0, ("refcount not zero")); 1073 KASSERT(lsc->lsc_active_aggregator != la, ("aggregator active")); 1074 1075 TAILQ_REMOVE(&lsc->lsc_aggregators, la, la_q); 1076 1077 free(la, M_DEVBUF); 1078 } 1079 1080 /* 1081 * lacp_aggregator_get: allocate an aggregator. 1082 */ 1083 1084 static struct lacp_aggregator * 1085 lacp_aggregator_get(struct lacp_softc *lsc, struct lacp_port *lp) 1086 { 1087 struct lacp_aggregator *la; 1088 1089 la = malloc(sizeof(*la), M_DEVBUF, M_NOWAIT); 1090 if (la) { 1091 la->la_refcnt = 1; 1092 la->la_nports = 0; 1093 TAILQ_INIT(&la->la_ports); 1094 la->la_pending = 0; 1095 TAILQ_INSERT_TAIL(&lsc->lsc_aggregators, la, la_q); 1096 } 1097 1098 return (la); 1099 } 1100 1101 /* 1102 * lacp_fill_aggregator_id: setup a newly allocated aggregator from a port. 1103 */ 1104 1105 static void 1106 lacp_fill_aggregator_id(struct lacp_aggregator *la, const struct lacp_port *lp) 1107 { 1108 lacp_fill_aggregator_id_peer(&la->la_partner, &lp->lp_partner); 1109 lacp_fill_aggregator_id_peer(&la->la_actor, &lp->lp_actor); 1110 1111 la->la_actor.lip_state = lp->lp_state & LACP_STATE_AGGREGATION; 1112 } 1113 1114 static void 1115 lacp_fill_aggregator_id_peer(struct lacp_peerinfo *lpi_aggr, 1116 const struct lacp_peerinfo *lpi_port) 1117 { 1118 memset(lpi_aggr, 0, sizeof(*lpi_aggr)); 1119 lpi_aggr->lip_systemid = lpi_port->lip_systemid; 1120 lpi_aggr->lip_key = lpi_port->lip_key; 1121 } 1122 1123 /* 1124 * lacp_aggregator_is_compatible: check if a port can join to an aggregator. 1125 */ 1126 1127 static int 1128 lacp_aggregator_is_compatible(const struct lacp_aggregator *la, 1129 const struct lacp_port *lp) 1130 { 1131 if (!(lp->lp_state & LACP_STATE_AGGREGATION) || 1132 !(lp->lp_partner.lip_state & LACP_STATE_AGGREGATION)) { 1133 return (0); 1134 } 1135 1136 if (!(la->la_actor.lip_state & LACP_STATE_AGGREGATION)) { 1137 return (0); 1138 } 1139 1140 if (!lacp_peerinfo_is_compatible(&la->la_partner, &lp->lp_partner)) { 1141 return (0); 1142 } 1143 1144 if (!lacp_peerinfo_is_compatible(&la->la_actor, &lp->lp_actor)) { 1145 return (0); 1146 } 1147 1148 return (1); 1149 } 1150 1151 static int 1152 lacp_peerinfo_is_compatible(const struct lacp_peerinfo *a, 1153 const struct lacp_peerinfo *b) 1154 { 1155 if (memcmp(&a->lip_systemid, &b->lip_systemid, 1156 sizeof(a->lip_systemid))) { 1157 return (0); 1158 } 1159 1160 if (memcmp(&a->lip_key, &b->lip_key, sizeof(a->lip_key))) { 1161 return (0); 1162 } 1163 1164 return (1); 1165 } 1166 1167 static void 1168 lacp_port_enable(struct lacp_port *lp) 1169 { 1170 lp->lp_state |= LACP_STATE_AGGREGATION; 1171 } 1172 1173 static void 1174 lacp_port_disable(struct lacp_port *lp) 1175 { 1176 lacp_set_mux(lp, LACP_MUX_DETACHED); 1177 1178 lp->lp_state &= ~LACP_STATE_AGGREGATION; 1179 lp->lp_selected = LACP_UNSELECTED; 1180 lacp_sm_rx_record_default(lp); 1181 lp->lp_partner.lip_state &= ~LACP_STATE_AGGREGATION; 1182 lp->lp_state &= ~LACP_STATE_EXPIRED; 1183 } 1184 1185 /* 1186 * lacp_select: select an aggregator. create one if necessary. 1187 */ 1188 static void 1189 lacp_select(struct lacp_port *lp) 1190 { 1191 struct lacp_softc *lsc = lp->lp_lsc; 1192 struct lacp_aggregator *la; 1193 #if defined(LACP_DEBUG) 1194 char buf[LACP_LAGIDSTR_MAX+1]; 1195 #endif 1196 1197 if (lp->lp_aggregator) { 1198 return; 1199 } 1200 1201 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1202 ("timer_wait_while still active")); 1203 1204 LACP_DPRINTF((lp, "port lagid=%s\n", 1205 lacp_format_lagid(&lp->lp_actor, &lp->lp_partner, 1206 buf, sizeof(buf)))); 1207 1208 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 1209 if (lacp_aggregator_is_compatible(la, lp)) { 1210 break; 1211 } 1212 } 1213 1214 if (la == NULL) { 1215 la = lacp_aggregator_get(lsc, lp); 1216 if (la == NULL) { 1217 LACP_DPRINTF((lp, "aggregator creation failed\n")); 1218 1219 /* 1220 * will retry on the next tick. 1221 */ 1222 1223 return; 1224 } 1225 lacp_fill_aggregator_id(la, lp); 1226 LACP_DPRINTF((lp, "aggregator created\n")); 1227 } else { 1228 LACP_DPRINTF((lp, "compatible aggregator found\n")); 1229 if (la->la_refcnt == LACP_MAX_PORTS) 1230 return; 1231 lacp_aggregator_addref(lsc, la); 1232 } 1233 1234 LACP_DPRINTF((lp, "aggregator lagid=%s\n", 1235 lacp_format_lagid(&la->la_actor, &la->la_partner, 1236 buf, sizeof(buf)))); 1237 1238 lp->lp_aggregator = la; 1239 lp->lp_selected = LACP_SELECTED; 1240 } 1241 1242 /* 1243 * lacp_unselect: finish unselect/detach process. 1244 */ 1245 1246 static void 1247 lacp_unselect(struct lacp_port *lp) 1248 { 1249 struct lacp_softc *lsc = lp->lp_lsc; 1250 struct lacp_aggregator *la = lp->lp_aggregator; 1251 1252 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1253 ("timer_wait_while still active")); 1254 1255 if (la == NULL) { 1256 return; 1257 } 1258 1259 lp->lp_aggregator = NULL; 1260 lacp_aggregator_delref(lsc, la); 1261 } 1262 1263 /* mux machine */ 1264 1265 static void 1266 lacp_sm_mux(struct lacp_port *lp) 1267 { 1268 enum lacp_mux_state new_state; 1269 boolean_t p_sync = 1270 (lp->lp_partner.lip_state & LACP_STATE_SYNC) != 0; 1271 boolean_t p_collecting = 1272 (lp->lp_partner.lip_state & LACP_STATE_COLLECTING) != 0; 1273 enum lacp_selected selected = lp->lp_selected; 1274 struct lacp_aggregator *la; 1275 1276 /* LACP_DPRINTF((lp, "%s: state %d\n", __func__, lp->lp_mux_state)); */ 1277 1278 re_eval: 1279 la = lp->lp_aggregator; 1280 KASSERT(lp->lp_mux_state == LACP_MUX_DETACHED || la != NULL, 1281 ("MUX not detached")); 1282 new_state = lp->lp_mux_state; 1283 switch (lp->lp_mux_state) { 1284 case LACP_MUX_DETACHED: 1285 if (selected != LACP_UNSELECTED) { 1286 new_state = LACP_MUX_WAITING; 1287 } 1288 break; 1289 case LACP_MUX_WAITING: 1290 KASSERT(la->la_pending > 0 || 1291 !LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1292 ("timer_wait_while still active")); 1293 if (selected == LACP_SELECTED && la->la_pending == 0) { 1294 new_state = LACP_MUX_ATTACHED; 1295 } else if (selected == LACP_UNSELECTED) { 1296 new_state = LACP_MUX_DETACHED; 1297 } 1298 break; 1299 case LACP_MUX_ATTACHED: 1300 if (selected == LACP_SELECTED && p_sync) { 1301 new_state = LACP_MUX_COLLECTING; 1302 } else if (selected != LACP_SELECTED) { 1303 new_state = LACP_MUX_DETACHED; 1304 } 1305 break; 1306 case LACP_MUX_COLLECTING: 1307 if (selected == LACP_SELECTED && p_sync && p_collecting) { 1308 new_state = LACP_MUX_DISTRIBUTING; 1309 } else if (selected != LACP_SELECTED || !p_sync) { 1310 new_state = LACP_MUX_ATTACHED; 1311 } 1312 break; 1313 case LACP_MUX_DISTRIBUTING: 1314 if (selected != LACP_SELECTED || !p_sync || !p_collecting) { 1315 new_state = LACP_MUX_COLLECTING; 1316 } 1317 break; 1318 default: 1319 panic("%s: unknown state", __func__); 1320 } 1321 1322 if (lp->lp_mux_state == new_state) { 1323 return; 1324 } 1325 1326 lacp_set_mux(lp, new_state); 1327 goto re_eval; 1328 } 1329 1330 static void 1331 lacp_set_mux(struct lacp_port *lp, enum lacp_mux_state new_state) 1332 { 1333 struct lacp_aggregator *la = lp->lp_aggregator; 1334 1335 if (lp->lp_mux_state == new_state) { 1336 return; 1337 } 1338 1339 switch (new_state) { 1340 case LACP_MUX_DETACHED: 1341 lp->lp_state &= ~LACP_STATE_SYNC; 1342 lacp_disable_distributing(lp); 1343 lacp_disable_collecting(lp); 1344 lacp_sm_assert_ntt(lp); 1345 /* cancel timer */ 1346 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE)) { 1347 KASSERT(la->la_pending > 0, 1348 ("timer_wait_while not active")); 1349 la->la_pending--; 1350 } 1351 LACP_TIMER_DISARM(lp, LACP_TIMER_WAIT_WHILE); 1352 lacp_unselect(lp); 1353 break; 1354 case LACP_MUX_WAITING: 1355 LACP_TIMER_ARM(lp, LACP_TIMER_WAIT_WHILE, 1356 LACP_AGGREGATE_WAIT_TIME); 1357 la->la_pending++; 1358 break; 1359 case LACP_MUX_ATTACHED: 1360 lp->lp_state |= LACP_STATE_SYNC; 1361 lacp_disable_collecting(lp); 1362 lacp_sm_assert_ntt(lp); 1363 break; 1364 case LACP_MUX_COLLECTING: 1365 lacp_enable_collecting(lp); 1366 lacp_disable_distributing(lp); 1367 lacp_sm_assert_ntt(lp); 1368 break; 1369 case LACP_MUX_DISTRIBUTING: 1370 lacp_enable_distributing(lp); 1371 break; 1372 default: 1373 panic("%s: unknown state", __func__); 1374 } 1375 1376 LACP_DPRINTF((lp, "mux_state %d -> %d\n", lp->lp_mux_state, new_state)); 1377 1378 lp->lp_mux_state = new_state; 1379 } 1380 1381 static void 1382 lacp_sm_mux_timer(struct lacp_port *lp) 1383 { 1384 struct lacp_aggregator *la = lp->lp_aggregator; 1385 #if defined(LACP_DEBUG) 1386 char buf[LACP_LAGIDSTR_MAX+1]; 1387 #endif 1388 1389 KASSERT(la->la_pending > 0, ("no pending event")); 1390 1391 LACP_DPRINTF((lp, "%s: aggregator %s, pending %d -> %d\n", __func__, 1392 lacp_format_lagid(&la->la_actor, &la->la_partner, 1393 buf, sizeof(buf)), 1394 la->la_pending, la->la_pending - 1)); 1395 1396 la->la_pending--; 1397 } 1398 1399 /* periodic transmit machine */ 1400 1401 static void 1402 lacp_sm_ptx_update_timeout(struct lacp_port *lp, uint8_t oldpstate) 1403 { 1404 if (LACP_STATE_EQ(oldpstate, lp->lp_partner.lip_state, 1405 LACP_STATE_TIMEOUT)) { 1406 return; 1407 } 1408 1409 LACP_DPRINTF((lp, "partner timeout changed\n")); 1410 1411 /* 1412 * FAST_PERIODIC -> SLOW_PERIODIC 1413 * or 1414 * SLOW_PERIODIC (-> PERIODIC_TX) -> FAST_PERIODIC 1415 * 1416 * let lacp_sm_ptx_tx_schedule to update timeout. 1417 */ 1418 1419 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1420 1421 /* 1422 * if timeout has been shortened, assert NTT. 1423 */ 1424 1425 if ((lp->lp_partner.lip_state & LACP_STATE_TIMEOUT)) { 1426 lacp_sm_assert_ntt(lp); 1427 } 1428 } 1429 1430 static void 1431 lacp_sm_ptx_tx_schedule(struct lacp_port *lp) 1432 { 1433 int timeout; 1434 1435 if (!(lp->lp_state & LACP_STATE_ACTIVITY) && 1436 !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) { 1437 1438 /* 1439 * NO_PERIODIC 1440 */ 1441 1442 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1443 return; 1444 } 1445 1446 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_PERIODIC)) { 1447 return; 1448 } 1449 1450 timeout = (lp->lp_partner.lip_state & LACP_STATE_TIMEOUT) ? 1451 LACP_FAST_PERIODIC_TIME : LACP_SLOW_PERIODIC_TIME; 1452 1453 LACP_TIMER_ARM(lp, LACP_TIMER_PERIODIC, timeout); 1454 } 1455 1456 static void 1457 lacp_sm_ptx_timer(struct lacp_port *lp) 1458 { 1459 lacp_sm_assert_ntt(lp); 1460 } 1461 1462 static void 1463 lacp_sm_rx(struct lacp_port *lp, const struct lacpdu *du) 1464 { 1465 int timeout; 1466 1467 /* 1468 * check LACP_DISABLED first 1469 */ 1470 1471 if (!(lp->lp_state & LACP_STATE_AGGREGATION)) { 1472 return; 1473 } 1474 1475 /* 1476 * check loopback condition. 1477 */ 1478 1479 if (!lacp_compare_systemid(&du->ldu_actor.lip_systemid, 1480 &lp->lp_actor.lip_systemid)) { 1481 return; 1482 } 1483 1484 /* 1485 * EXPIRED, DEFAULTED, CURRENT -> CURRENT 1486 */ 1487 1488 lacp_sm_rx_update_selected(lp, du); 1489 lacp_sm_rx_update_ntt(lp, du); 1490 lacp_sm_rx_record_pdu(lp, du); 1491 1492 timeout = (lp->lp_state & LACP_STATE_TIMEOUT) ? 1493 LACP_SHORT_TIMEOUT_TIME : LACP_LONG_TIMEOUT_TIME; 1494 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, timeout); 1495 1496 lp->lp_state &= ~LACP_STATE_EXPIRED; 1497 1498 /* 1499 * kick transmit machine without waiting the next tick. 1500 */ 1501 1502 lacp_sm_tx(lp); 1503 } 1504 1505 static void 1506 lacp_sm_rx_set_expired(struct lacp_port *lp) 1507 { 1508 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1509 lp->lp_partner.lip_state |= LACP_STATE_TIMEOUT; 1510 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, LACP_SHORT_TIMEOUT_TIME); 1511 lp->lp_state |= LACP_STATE_EXPIRED; 1512 } 1513 1514 static void 1515 lacp_sm_rx_timer(struct lacp_port *lp) 1516 { 1517 if ((lp->lp_state & LACP_STATE_EXPIRED) == 0) { 1518 /* CURRENT -> EXPIRED */ 1519 LACP_DPRINTF((lp, "%s: CURRENT -> EXPIRED\n", __func__)); 1520 lacp_sm_rx_set_expired(lp); 1521 } else { 1522 /* EXPIRED -> DEFAULTED */ 1523 LACP_DPRINTF((lp, "%s: EXPIRED -> DEFAULTED\n", __func__)); 1524 lacp_sm_rx_update_default_selected(lp); 1525 lacp_sm_rx_record_default(lp); 1526 lp->lp_state &= ~LACP_STATE_EXPIRED; 1527 } 1528 } 1529 1530 static void 1531 lacp_sm_rx_record_pdu(struct lacp_port *lp, const struct lacpdu *du) 1532 { 1533 boolean_t active; 1534 uint8_t oldpstate; 1535 #if defined(LACP_DEBUG) 1536 char buf[LACP_STATESTR_MAX+1]; 1537 #endif 1538 1539 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1540 1541 oldpstate = lp->lp_partner.lip_state; 1542 1543 active = (du->ldu_actor.lip_state & LACP_STATE_ACTIVITY) 1544 || ((lp->lp_state & LACP_STATE_ACTIVITY) && 1545 (du->ldu_partner.lip_state & LACP_STATE_ACTIVITY)); 1546 1547 lp->lp_partner = du->ldu_actor; 1548 if (active && 1549 ((LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1550 LACP_STATE_AGGREGATION) && 1551 !lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner)) 1552 || (du->ldu_partner.lip_state & LACP_STATE_AGGREGATION) == 0)) { 1553 /* XXX nothing? */ 1554 } else { 1555 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1556 } 1557 1558 lp->lp_state &= ~LACP_STATE_DEFAULTED; 1559 1560 if (oldpstate != lp->lp_partner.lip_state) { 1561 LACP_DPRINTF((lp, "old pstate %s\n", 1562 lacp_format_state(oldpstate, buf, sizeof(buf)))); 1563 LACP_DPRINTF((lp, "new pstate %s\n", 1564 lacp_format_state(lp->lp_partner.lip_state, buf, 1565 sizeof(buf)))); 1566 } 1567 1568 lacp_sm_ptx_update_timeout(lp, oldpstate); 1569 } 1570 1571 static void 1572 lacp_sm_rx_update_ntt(struct lacp_port *lp, const struct lacpdu *du) 1573 { 1574 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1575 1576 if (lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner) || 1577 !LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1578 LACP_STATE_ACTIVITY | LACP_STATE_SYNC | LACP_STATE_AGGREGATION)) { 1579 LACP_DPRINTF((lp, "%s: assert ntt\n", __func__)); 1580 lacp_sm_assert_ntt(lp); 1581 } 1582 } 1583 1584 static void 1585 lacp_sm_rx_record_default(struct lacp_port *lp) 1586 { 1587 uint8_t oldpstate; 1588 1589 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1590 1591 oldpstate = lp->lp_partner.lip_state; 1592 lp->lp_partner = lacp_partner_admin; 1593 lp->lp_state |= LACP_STATE_DEFAULTED; 1594 lacp_sm_ptx_update_timeout(lp, oldpstate); 1595 } 1596 1597 static void 1598 lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *lp, 1599 const struct lacp_peerinfo *info) 1600 { 1601 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1602 1603 if (lacp_compare_peerinfo(&lp->lp_partner, info) || 1604 !LACP_STATE_EQ(lp->lp_partner.lip_state, info->lip_state, 1605 LACP_STATE_AGGREGATION)) { 1606 lp->lp_selected = LACP_UNSELECTED; 1607 /* mux machine will clean up lp->lp_aggregator */ 1608 } 1609 } 1610 1611 static void 1612 lacp_sm_rx_update_selected(struct lacp_port *lp, const struct lacpdu *du) 1613 { 1614 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1615 1616 lacp_sm_rx_update_selected_from_peerinfo(lp, &du->ldu_actor); 1617 } 1618 1619 static void 1620 lacp_sm_rx_update_default_selected(struct lacp_port *lp) 1621 { 1622 /* LACP_DPRINTF((lp, "%s\n", __func__)); */ 1623 1624 lacp_sm_rx_update_selected_from_peerinfo(lp, &lacp_partner_admin); 1625 } 1626 1627 /* transmit machine */ 1628 1629 static void 1630 lacp_sm_tx(struct lacp_port *lp) 1631 { 1632 int error; 1633 1634 if (!(lp->lp_state & LACP_STATE_AGGREGATION) 1635 #if 1 1636 || (!(lp->lp_state & LACP_STATE_ACTIVITY) 1637 && !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) 1638 #endif 1639 ) { 1640 lp->lp_flags &= ~LACP_PORT_NTT; 1641 } 1642 1643 if (!(lp->lp_flags & LACP_PORT_NTT)) { 1644 return; 1645 } 1646 1647 /* Rate limit to 3 PDUs per LACP_FAST_PERIODIC_TIME */ 1648 if (ppsratecheck(&lp->lp_last_lacpdu, &lp->lp_lacpdu_sent, 1649 (3 / LACP_FAST_PERIODIC_TIME)) == 0) { 1650 LACP_DPRINTF((lp, "rate limited pdu\n")); 1651 return; 1652 } 1653 1654 error = lacp_xmit_lacpdu(lp); 1655 1656 if (error == 0) { 1657 lp->lp_flags &= ~LACP_PORT_NTT; 1658 } else { 1659 LACP_DPRINTF((lp, "lacpdu transmit failure, error %d\n", 1660 error)); 1661 } 1662 } 1663 1664 static void 1665 lacp_sm_assert_ntt(struct lacp_port *lp) 1666 { 1667 1668 lp->lp_flags |= LACP_PORT_NTT; 1669 } 1670 1671 static void 1672 lacp_run_timers(struct lacp_port *lp) 1673 { 1674 int i; 1675 1676 for (i = 0; i < LACP_NTIMER; i++) { 1677 KASSERT(lp->lp_timer[i] >= 0, 1678 ("invalid timer value %d", lp->lp_timer[i])); 1679 if (lp->lp_timer[i] == 0) { 1680 continue; 1681 } else if (--lp->lp_timer[i] <= 0) { 1682 if (lacp_timer_funcs[i]) { 1683 (*lacp_timer_funcs[i])(lp); 1684 } 1685 } 1686 } 1687 } 1688 1689 int 1690 lacp_marker_input(struct lacp_port *lp, struct mbuf *m) 1691 { 1692 struct lacp_softc *lsc = lp->lp_lsc; 1693 struct lagg_port *lgp = lp->lp_lagg; 1694 struct lacp_port *lp2; 1695 struct markerdu *mdu; 1696 int error = 0; 1697 int pending = 0; 1698 1699 if (m->m_pkthdr.len != sizeof(*mdu)) { 1700 goto bad; 1701 } 1702 1703 if ((m->m_flags & M_MCAST) == 0) { 1704 goto bad; 1705 } 1706 1707 if (m->m_len < sizeof(*mdu)) { 1708 m = m_pullup(m, sizeof(*mdu)); 1709 if (m == NULL) { 1710 return (ENOMEM); 1711 } 1712 } 1713 1714 mdu = mtod(m, struct markerdu *); 1715 1716 if (memcmp(&mdu->mdu_eh.ether_dhost, 1717 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 1718 goto bad; 1719 } 1720 1721 if (mdu->mdu_sph.sph_version != 1) { 1722 goto bad; 1723 } 1724 1725 switch (mdu->mdu_tlv.tlv_type) { 1726 case MARKER_TYPE_INFO: 1727 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 1728 marker_info_tlv_template, TRUE)) { 1729 goto bad; 1730 } 1731 mdu->mdu_tlv.tlv_type = MARKER_TYPE_RESPONSE; 1732 memcpy(&mdu->mdu_eh.ether_dhost, 1733 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN); 1734 memcpy(&mdu->mdu_eh.ether_shost, 1735 lgp->lp_lladdr, ETHER_ADDR_LEN); 1736 error = lagg_enqueue(lp->lp_ifp, m); 1737 break; 1738 1739 case MARKER_TYPE_RESPONSE: 1740 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 1741 marker_response_tlv_template, TRUE)) { 1742 goto bad; 1743 } 1744 LACP_DPRINTF((lp, "marker response, port=%u, sys=%6D, id=%u\n", 1745 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, 1746 ":", ntohl(mdu->mdu_info.mi_rq_xid))); 1747 1748 /* Verify that it is the last marker we sent out */ 1749 if (memcmp(&mdu->mdu_info, &lp->lp_marker, 1750 sizeof(struct lacp_markerinfo))) 1751 goto bad; 1752 1753 LACP_LOCK(lsc); 1754 lp->lp_flags &= ~LACP_PORT_MARK; 1755 1756 if (lsc->lsc_suppress_distributing) { 1757 /* Check if any ports are waiting for a response */ 1758 LIST_FOREACH(lp2, &lsc->lsc_ports, lp_next) { 1759 if (lp2->lp_flags & LACP_PORT_MARK) { 1760 pending = 1; 1761 break; 1762 } 1763 } 1764 1765 if (pending == 0) { 1766 /* All interface queues are clear */ 1767 LACP_DPRINTF((NULL, "queue flush complete\n")); 1768 lsc->lsc_suppress_distributing = FALSE; 1769 } 1770 } 1771 LACP_UNLOCK(lsc); 1772 m_freem(m); 1773 break; 1774 1775 default: 1776 goto bad; 1777 } 1778 1779 return (error); 1780 1781 bad: 1782 LACP_DPRINTF((lp, "bad marker frame\n")); 1783 m_freem(m); 1784 return (EINVAL); 1785 } 1786 1787 static int 1788 tlv_check(const void *p, size_t size, const struct tlvhdr *tlv, 1789 const struct tlv_template *tmpl, boolean_t check_type) 1790 { 1791 while (/* CONSTCOND */ 1) { 1792 if ((const char *)tlv - (const char *)p + sizeof(*tlv) > size) { 1793 return (EINVAL); 1794 } 1795 if ((check_type && tlv->tlv_type != tmpl->tmpl_type) || 1796 tlv->tlv_length != tmpl->tmpl_length) { 1797 return (EINVAL); 1798 } 1799 if (tmpl->tmpl_type == 0) { 1800 break; 1801 } 1802 tlv = (const struct tlvhdr *) 1803 ((const char *)tlv + tlv->tlv_length); 1804 tmpl++; 1805 } 1806 1807 return (0); 1808 } 1809 1810 #if defined(LACP_DEBUG) 1811 const char * 1812 lacp_format_mac(const uint8_t *mac, char *buf, size_t buflen) 1813 { 1814 snprintf(buf, buflen, "%02X-%02X-%02X-%02X-%02X-%02X", 1815 (int)mac[0], 1816 (int)mac[1], 1817 (int)mac[2], 1818 (int)mac[3], 1819 (int)mac[4], 1820 (int)mac[5]); 1821 1822 return (buf); 1823 } 1824 1825 const char * 1826 lacp_format_systemid(const struct lacp_systemid *sysid, 1827 char *buf, size_t buflen) 1828 { 1829 char macbuf[LACP_MACSTR_MAX+1]; 1830 1831 snprintf(buf, buflen, "%04X,%s", 1832 ntohs(sysid->lsi_prio), 1833 lacp_format_mac(sysid->lsi_mac, macbuf, sizeof(macbuf))); 1834 1835 return (buf); 1836 } 1837 1838 const char * 1839 lacp_format_portid(const struct lacp_portid *portid, char *buf, size_t buflen) 1840 { 1841 snprintf(buf, buflen, "%04X,%04X", 1842 ntohs(portid->lpi_prio), 1843 ntohs(portid->lpi_portno)); 1844 1845 return (buf); 1846 } 1847 1848 const char * 1849 lacp_format_partner(const struct lacp_peerinfo *peer, char *buf, size_t buflen) 1850 { 1851 char sysid[LACP_SYSTEMIDSTR_MAX+1]; 1852 char portid[LACP_PORTIDSTR_MAX+1]; 1853 1854 snprintf(buf, buflen, "(%s,%04X,%s)", 1855 lacp_format_systemid(&peer->lip_systemid, sysid, sizeof(sysid)), 1856 ntohs(peer->lip_key), 1857 lacp_format_portid(&peer->lip_portid, portid, sizeof(portid))); 1858 1859 return (buf); 1860 } 1861 1862 const char * 1863 lacp_format_lagid(const struct lacp_peerinfo *a, 1864 const struct lacp_peerinfo *b, char *buf, size_t buflen) 1865 { 1866 char astr[LACP_PARTNERSTR_MAX+1]; 1867 char bstr[LACP_PARTNERSTR_MAX+1]; 1868 1869 #if 0 1870 /* 1871 * there's a convention to display small numbered peer 1872 * in the left. 1873 */ 1874 1875 if (lacp_compare_peerinfo(a, b) > 0) { 1876 const struct lacp_peerinfo *t; 1877 1878 t = a; 1879 a = b; 1880 b = t; 1881 } 1882 #endif 1883 1884 snprintf(buf, buflen, "[%s,%s]", 1885 lacp_format_partner(a, astr, sizeof(astr)), 1886 lacp_format_partner(b, bstr, sizeof(bstr))); 1887 1888 return (buf); 1889 } 1890 1891 const char * 1892 lacp_format_lagid_aggregator(const struct lacp_aggregator *la, 1893 char *buf, size_t buflen) 1894 { 1895 if (la == NULL) { 1896 return ("(none)"); 1897 } 1898 1899 return (lacp_format_lagid(&la->la_actor, &la->la_partner, buf, buflen)); 1900 } 1901 1902 const char * 1903 lacp_format_state(uint8_t state, char *buf, size_t buflen) 1904 { 1905 snprintf(buf, buflen, "%b", state, LACP_STATE_BITS); 1906 return (buf); 1907 } 1908 1909 static void 1910 lacp_dump_lacpdu(const struct lacpdu *du) 1911 { 1912 char buf[LACP_PARTNERSTR_MAX+1]; 1913 char buf2[LACP_STATESTR_MAX+1]; 1914 1915 printf("actor=%s\n", 1916 lacp_format_partner(&du->ldu_actor, buf, sizeof(buf))); 1917 printf("actor.state=%s\n", 1918 lacp_format_state(du->ldu_actor.lip_state, buf2, sizeof(buf2))); 1919 printf("partner=%s\n", 1920 lacp_format_partner(&du->ldu_partner, buf, sizeof(buf))); 1921 printf("partner.state=%s\n", 1922 lacp_format_state(du->ldu_partner.lip_state, buf2, sizeof(buf2))); 1923 1924 printf("maxdelay=%d\n", ntohs(du->ldu_collector.lci_maxdelay)); 1925 } 1926 1927 static void 1928 lacp_dprintf(const struct lacp_port *lp, const char *fmt, ...) 1929 { 1930 va_list va; 1931 1932 if (lp) { 1933 printf("%s: ", lp->lp_ifp->if_xname); 1934 } 1935 1936 va_start(va, fmt); 1937 vprintf(fmt, va); 1938 va_end(va); 1939 } 1940 #endif 1941