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 <sys/sysctl.h> 42 #include <machine/stdarg.h> 43 #include <sys/lock.h> 44 #include <sys/rwlock.h> 45 46 #include <net/if.h> 47 #include <net/if_dl.h> 48 #include <net/ethernet.h> 49 #include <net/if_media.h> 50 #include <net/if_types.h> 51 52 #include <net/if_lagg.h> 53 #include <net/ieee8023ad_lacp.h> 54 55 /* 56 * actor system priority and port priority. 57 * XXX should be configurable. 58 */ 59 60 #define LACP_SYSTEM_PRIO 0x8000 61 #define LACP_PORT_PRIO 0x8000 62 63 const uint8_t ethermulticastaddr_slowprotocols[ETHER_ADDR_LEN] = 64 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x02 }; 65 66 static const struct tlv_template lacp_info_tlv_template[] = { 67 { LACP_TYPE_ACTORINFO, 68 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) }, 69 { LACP_TYPE_PARTNERINFO, 70 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) }, 71 { LACP_TYPE_COLLECTORINFO, 72 sizeof(struct tlvhdr) + sizeof(struct lacp_collectorinfo) }, 73 { 0, 0 }, 74 }; 75 76 static const struct tlv_template marker_info_tlv_template[] = { 77 { MARKER_TYPE_INFO, 78 sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) }, 79 { 0, 0 }, 80 }; 81 82 static const struct tlv_template marker_response_tlv_template[] = { 83 { MARKER_TYPE_RESPONSE, 84 sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) }, 85 { 0, 0 }, 86 }; 87 88 typedef void (*lacp_timer_func_t)(struct lacp_port *); 89 90 static void lacp_fill_actorinfo(struct lacp_port *, struct lacp_peerinfo *); 91 static void lacp_fill_markerinfo(struct lacp_port *, 92 struct lacp_markerinfo *); 93 94 static uint64_t lacp_aggregator_bandwidth(struct lacp_aggregator *); 95 static void lacp_suppress_distributing(struct lacp_softc *, 96 struct lacp_aggregator *); 97 static void lacp_transit_expire(void *); 98 static void lacp_update_portmap(struct lacp_softc *); 99 static void lacp_select_active_aggregator(struct lacp_softc *); 100 static uint16_t lacp_compose_key(struct lacp_port *); 101 static int tlv_check(const void *, size_t, const struct tlvhdr *, 102 const struct tlv_template *, boolean_t); 103 static void lacp_tick(void *); 104 105 static void lacp_fill_aggregator_id(struct lacp_aggregator *, 106 const struct lacp_port *); 107 static void lacp_fill_aggregator_id_peer(struct lacp_peerinfo *, 108 const struct lacp_peerinfo *); 109 static int lacp_aggregator_is_compatible(const struct lacp_aggregator *, 110 const struct lacp_port *); 111 static int lacp_peerinfo_is_compatible(const struct lacp_peerinfo *, 112 const struct lacp_peerinfo *); 113 114 static struct lacp_aggregator *lacp_aggregator_get(struct lacp_softc *, 115 struct lacp_port *); 116 static void lacp_aggregator_addref(struct lacp_softc *, 117 struct lacp_aggregator *); 118 static void lacp_aggregator_delref(struct lacp_softc *, 119 struct lacp_aggregator *); 120 121 /* receive machine */ 122 123 static int lacp_pdu_input(struct lacp_port *, struct mbuf *); 124 static int lacp_marker_input(struct lacp_port *, struct mbuf *); 125 static void lacp_sm_rx(struct lacp_port *, const struct lacpdu *); 126 static void lacp_sm_rx_timer(struct lacp_port *); 127 static void lacp_sm_rx_set_expired(struct lacp_port *); 128 static void lacp_sm_rx_update_ntt(struct lacp_port *, 129 const struct lacpdu *); 130 static void lacp_sm_rx_record_pdu(struct lacp_port *, 131 const struct lacpdu *); 132 static void lacp_sm_rx_update_selected(struct lacp_port *, 133 const struct lacpdu *); 134 static void lacp_sm_rx_record_default(struct lacp_port *); 135 static void lacp_sm_rx_update_default_selected(struct lacp_port *); 136 static void lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *, 137 const struct lacp_peerinfo *); 138 139 /* mux machine */ 140 141 static void lacp_sm_mux(struct lacp_port *); 142 static void lacp_set_mux(struct lacp_port *, enum lacp_mux_state); 143 static void lacp_sm_mux_timer(struct lacp_port *); 144 145 /* periodic transmit machine */ 146 147 static void lacp_sm_ptx_update_timeout(struct lacp_port *, uint8_t); 148 static void lacp_sm_ptx_tx_schedule(struct lacp_port *); 149 static void lacp_sm_ptx_timer(struct lacp_port *); 150 151 /* transmit machine */ 152 153 static void lacp_sm_tx(struct lacp_port *); 154 static void lacp_sm_assert_ntt(struct lacp_port *); 155 156 static void lacp_run_timers(struct lacp_port *); 157 static int lacp_compare_peerinfo(const struct lacp_peerinfo *, 158 const struct lacp_peerinfo *); 159 static int lacp_compare_systemid(const struct lacp_systemid *, 160 const struct lacp_systemid *); 161 static void lacp_port_enable(struct lacp_port *); 162 static void lacp_port_disable(struct lacp_port *); 163 static void lacp_select(struct lacp_port *); 164 static void lacp_unselect(struct lacp_port *); 165 static void lacp_disable_collecting(struct lacp_port *); 166 static void lacp_enable_collecting(struct lacp_port *); 167 static void lacp_disable_distributing(struct lacp_port *); 168 static void lacp_enable_distributing(struct lacp_port *); 169 static int lacp_xmit_lacpdu(struct lacp_port *); 170 static int lacp_xmit_marker(struct lacp_port *); 171 172 /* Debugging */ 173 174 static void lacp_dump_lacpdu(const struct lacpdu *); 175 static const char *lacp_format_partner(const struct lacp_peerinfo *, char *, 176 size_t); 177 static const char *lacp_format_lagid(const struct lacp_peerinfo *, 178 const struct lacp_peerinfo *, char *, size_t); 179 static const char *lacp_format_lagid_aggregator(const struct lacp_aggregator *, 180 char *, size_t); 181 static const char *lacp_format_state(uint8_t, char *, size_t); 182 static const char *lacp_format_mac(const uint8_t *, char *, size_t); 183 static const char *lacp_format_systemid(const struct lacp_systemid *, char *, 184 size_t); 185 static const char *lacp_format_portid(const struct lacp_portid *, char *, 186 size_t); 187 static void lacp_dprintf(const struct lacp_port *, const char *, ...) 188 __attribute__((__format__(__printf__, 2, 3))); 189 190 static int lacp_debug = 0; 191 SYSCTL_NODE(_net_link_lagg, OID_AUTO, lacp, CTLFLAG_RD, 0, "ieee802.3ad"); 192 SYSCTL_INT(_net_link_lagg_lacp, OID_AUTO, debug, CTLFLAG_RW | CTLFLAG_TUN, 193 &lacp_debug, 0, "Enable LACP debug logging (1=debug, 2=trace)"); 194 TUNABLE_INT("net.link.lagg.lacp.debug", &lacp_debug); 195 196 #define LACP_DPRINTF(a) if (lacp_debug & 0x01) { lacp_dprintf a ; } 197 #define LACP_TRACE(a) if (lacp_debug & 0x02) { lacp_dprintf(a,"%s\n",__func__); } 198 #define LACP_TPRINTF(a) if (lacp_debug & 0x04) { lacp_dprintf a ; } 199 200 /* 201 * partner administration variables. 202 * XXX should be configurable. 203 */ 204 205 static const struct lacp_peerinfo lacp_partner_admin_optimistic = { 206 .lip_systemid = { .lsi_prio = 0xffff }, 207 .lip_portid = { .lpi_prio = 0xffff }, 208 .lip_state = LACP_STATE_SYNC | LACP_STATE_AGGREGATION | 209 LACP_STATE_COLLECTING | LACP_STATE_DISTRIBUTING, 210 }; 211 212 static const struct lacp_peerinfo lacp_partner_admin_strict = { 213 .lip_systemid = { .lsi_prio = 0xffff }, 214 .lip_portid = { .lpi_prio = 0xffff }, 215 .lip_state = 0, 216 }; 217 218 static const lacp_timer_func_t lacp_timer_funcs[LACP_NTIMER] = { 219 [LACP_TIMER_CURRENT_WHILE] = lacp_sm_rx_timer, 220 [LACP_TIMER_PERIODIC] = lacp_sm_ptx_timer, 221 [LACP_TIMER_WAIT_WHILE] = lacp_sm_mux_timer, 222 }; 223 224 struct mbuf * 225 lacp_input(struct lagg_port *lgp, struct mbuf *m) 226 { 227 struct lacp_port *lp = LACP_PORT(lgp); 228 uint8_t subtype; 229 230 if (m->m_pkthdr.len < sizeof(struct ether_header) + sizeof(subtype)) { 231 m_freem(m); 232 return (NULL); 233 } 234 235 m_copydata(m, sizeof(struct ether_header), sizeof(subtype), &subtype); 236 switch (subtype) { 237 case SLOWPROTOCOLS_SUBTYPE_LACP: 238 lacp_pdu_input(lp, m); 239 return (NULL); 240 241 case SLOWPROTOCOLS_SUBTYPE_MARKER: 242 lacp_marker_input(lp, m); 243 return (NULL); 244 } 245 246 /* Not a subtype we are interested in */ 247 return (m); 248 } 249 250 /* 251 * lacp_pdu_input: process lacpdu 252 */ 253 static int 254 lacp_pdu_input(struct lacp_port *lp, struct mbuf *m) 255 { 256 struct lacp_softc *lsc = lp->lp_lsc; 257 struct lacpdu *du; 258 int error = 0; 259 260 if (m->m_pkthdr.len != sizeof(*du)) { 261 goto bad; 262 } 263 264 if ((m->m_flags & M_MCAST) == 0) { 265 goto bad; 266 } 267 268 if (m->m_len < sizeof(*du)) { 269 m = m_pullup(m, sizeof(*du)); 270 if (m == NULL) { 271 return (ENOMEM); 272 } 273 } 274 275 du = mtod(m, struct lacpdu *); 276 277 if (memcmp(&du->ldu_eh.ether_dhost, 278 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 279 goto bad; 280 } 281 282 /* 283 * ignore the version for compatibility with 284 * the future protocol revisions. 285 */ 286 #if 0 287 if (du->ldu_sph.sph_version != 1) { 288 goto bad; 289 } 290 #endif 291 292 /* 293 * ignore tlv types for compatibility with 294 * the future protocol revisions. 295 */ 296 if (tlv_check(du, sizeof(*du), &du->ldu_tlv_actor, 297 lacp_info_tlv_template, FALSE)) { 298 goto bad; 299 } 300 301 if (lacp_debug > 0) { 302 lacp_dprintf(lp, "lacpdu receive\n"); 303 lacp_dump_lacpdu(du); 304 } 305 306 if ((1 << lp->lp_ifp->if_dunit) & lp->lp_lsc->lsc_debug.lsc_rx_test) { 307 LACP_TPRINTF((lp, "Dropping RX PDU\n")); 308 goto bad; 309 } 310 311 LACP_LOCK(lsc); 312 lacp_sm_rx(lp, du); 313 LACP_UNLOCK(lsc); 314 315 m_freem(m); 316 return (error); 317 318 bad: 319 m_freem(m); 320 return (EINVAL); 321 } 322 323 static void 324 lacp_fill_actorinfo(struct lacp_port *lp, struct lacp_peerinfo *info) 325 { 326 struct lagg_port *lgp = lp->lp_lagg; 327 struct lagg_softc *sc = lgp->lp_softc; 328 329 info->lip_systemid.lsi_prio = htons(LACP_SYSTEM_PRIO); 330 memcpy(&info->lip_systemid.lsi_mac, 331 IF_LLADDR(sc->sc_ifp), ETHER_ADDR_LEN); 332 info->lip_portid.lpi_prio = htons(LACP_PORT_PRIO); 333 info->lip_portid.lpi_portno = htons(lp->lp_ifp->if_index); 334 info->lip_state = lp->lp_state; 335 } 336 337 static void 338 lacp_fill_markerinfo(struct lacp_port *lp, struct lacp_markerinfo *info) 339 { 340 struct ifnet *ifp = lp->lp_ifp; 341 342 /* Fill in the port index and system id (encoded as the MAC) */ 343 info->mi_rq_port = htons(ifp->if_index); 344 memcpy(&info->mi_rq_system, lp->lp_systemid.lsi_mac, ETHER_ADDR_LEN); 345 info->mi_rq_xid = htonl(0); 346 } 347 348 static int 349 lacp_xmit_lacpdu(struct lacp_port *lp) 350 { 351 struct lagg_port *lgp = lp->lp_lagg; 352 struct mbuf *m; 353 struct lacpdu *du; 354 int error; 355 356 LACP_LOCK_ASSERT(lp->lp_lsc); 357 358 m = m_gethdr(M_NOWAIT, MT_DATA); 359 if (m == NULL) { 360 return (ENOMEM); 361 } 362 m->m_len = m->m_pkthdr.len = sizeof(*du); 363 364 du = mtod(m, struct lacpdu *); 365 memset(du, 0, sizeof(*du)); 366 367 memcpy(&du->ldu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 368 ETHER_ADDR_LEN); 369 memcpy(&du->ldu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN); 370 du->ldu_eh.ether_type = htons(ETHERTYPE_SLOW); 371 372 du->ldu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_LACP; 373 du->ldu_sph.sph_version = 1; 374 375 TLV_SET(&du->ldu_tlv_actor, LACP_TYPE_ACTORINFO, sizeof(du->ldu_actor)); 376 du->ldu_actor = lp->lp_actor; 377 378 TLV_SET(&du->ldu_tlv_partner, LACP_TYPE_PARTNERINFO, 379 sizeof(du->ldu_partner)); 380 du->ldu_partner = lp->lp_partner; 381 382 TLV_SET(&du->ldu_tlv_collector, LACP_TYPE_COLLECTORINFO, 383 sizeof(du->ldu_collector)); 384 du->ldu_collector.lci_maxdelay = 0; 385 386 if (lacp_debug > 0) { 387 lacp_dprintf(lp, "lacpdu transmit\n"); 388 lacp_dump_lacpdu(du); 389 } 390 391 m->m_flags |= M_MCAST; 392 393 /* 394 * XXX should use higher priority queue. 395 * otherwise network congestion can break aggregation. 396 */ 397 398 error = lagg_enqueue(lp->lp_ifp, m); 399 return (error); 400 } 401 402 static int 403 lacp_xmit_marker(struct lacp_port *lp) 404 { 405 struct lagg_port *lgp = lp->lp_lagg; 406 struct mbuf *m; 407 struct markerdu *mdu; 408 int error; 409 410 LACP_LOCK_ASSERT(lp->lp_lsc); 411 412 m = m_gethdr(M_NOWAIT, MT_DATA); 413 if (m == NULL) { 414 return (ENOMEM); 415 } 416 m->m_len = m->m_pkthdr.len = sizeof(*mdu); 417 418 mdu = mtod(m, struct markerdu *); 419 memset(mdu, 0, sizeof(*mdu)); 420 421 memcpy(&mdu->mdu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 422 ETHER_ADDR_LEN); 423 memcpy(&mdu->mdu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN); 424 mdu->mdu_eh.ether_type = htons(ETHERTYPE_SLOW); 425 426 mdu->mdu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_MARKER; 427 mdu->mdu_sph.sph_version = 1; 428 429 /* Bump the transaction id and copy over the marker info */ 430 lp->lp_marker.mi_rq_xid = htonl(ntohl(lp->lp_marker.mi_rq_xid) + 1); 431 TLV_SET(&mdu->mdu_tlv, MARKER_TYPE_INFO, sizeof(mdu->mdu_info)); 432 mdu->mdu_info = lp->lp_marker; 433 434 LACP_DPRINTF((lp, "marker transmit, port=%u, sys=%6D, id=%u\n", 435 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, ":", 436 ntohl(mdu->mdu_info.mi_rq_xid))); 437 438 m->m_flags |= M_MCAST; 439 error = lagg_enqueue(lp->lp_ifp, m); 440 return (error); 441 } 442 443 void 444 lacp_linkstate(struct lagg_port *lgp) 445 { 446 struct lacp_port *lp = LACP_PORT(lgp); 447 struct lacp_softc *lsc = lp->lp_lsc; 448 struct ifnet *ifp = lgp->lp_ifp; 449 struct ifmediareq ifmr; 450 int error = 0; 451 u_int media; 452 uint8_t old_state; 453 uint16_t old_key; 454 455 bzero((char *)&ifmr, sizeof(ifmr)); 456 error = (*ifp->if_ioctl)(ifp, SIOCGIFMEDIA, (caddr_t)&ifmr); 457 if (error != 0) 458 return; 459 460 LACP_LOCK(lsc); 461 media = ifmr.ifm_active; 462 LACP_DPRINTF((lp, "media changed 0x%x -> 0x%x, ether = %d, fdx = %d, " 463 "link = %d\n", lp->lp_media, media, IFM_TYPE(media) == IFM_ETHER, 464 (media & IFM_FDX) != 0, ifp->if_link_state == LINK_STATE_UP)); 465 old_state = lp->lp_state; 466 old_key = lp->lp_key; 467 468 lp->lp_media = media; 469 /* 470 * If the port is not an active full duplex Ethernet link then it can 471 * not be aggregated. 472 */ 473 if (IFM_TYPE(media) != IFM_ETHER || (media & IFM_FDX) == 0 || 474 ifp->if_link_state != LINK_STATE_UP) { 475 lacp_port_disable(lp); 476 } else { 477 lacp_port_enable(lp); 478 } 479 lp->lp_key = lacp_compose_key(lp); 480 481 if (old_state != lp->lp_state || old_key != lp->lp_key) { 482 LACP_DPRINTF((lp, "-> UNSELECTED\n")); 483 lp->lp_selected = LACP_UNSELECTED; 484 } 485 LACP_UNLOCK(lsc); 486 } 487 488 static void 489 lacp_tick(void *arg) 490 { 491 struct lacp_softc *lsc = arg; 492 struct lacp_port *lp; 493 494 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { 495 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) 496 continue; 497 498 lacp_run_timers(lp); 499 500 lacp_select(lp); 501 lacp_sm_mux(lp); 502 lacp_sm_tx(lp); 503 lacp_sm_ptx_tx_schedule(lp); 504 } 505 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc); 506 } 507 508 int 509 lacp_port_create(struct lagg_port *lgp) 510 { 511 struct lagg_softc *sc = lgp->lp_softc; 512 struct lacp_softc *lsc = LACP_SOFTC(sc); 513 struct lacp_port *lp; 514 struct ifnet *ifp = lgp->lp_ifp; 515 struct sockaddr_dl sdl; 516 struct ifmultiaddr *rifma = NULL; 517 int error; 518 519 boolean_t active = TRUE; /* XXX should be configurable */ 520 boolean_t fast = FALSE; /* XXX should be configurable */ 521 522 bzero((char *)&sdl, sizeof(sdl)); 523 sdl.sdl_len = sizeof(sdl); 524 sdl.sdl_family = AF_LINK; 525 sdl.sdl_index = ifp->if_index; 526 sdl.sdl_type = IFT_ETHER; 527 sdl.sdl_alen = ETHER_ADDR_LEN; 528 529 bcopy(ðermulticastaddr_slowprotocols, 530 LLADDR(&sdl), ETHER_ADDR_LEN); 531 error = if_addmulti(ifp, (struct sockaddr *)&sdl, &rifma); 532 if (error) { 533 printf("%s: ADDMULTI failed on %s\n", __func__, lgp->lp_ifname); 534 return (error); 535 } 536 537 lp = malloc(sizeof(struct lacp_port), 538 M_DEVBUF, M_NOWAIT|M_ZERO); 539 if (lp == NULL) 540 return (ENOMEM); 541 542 LACP_LOCK(lsc); 543 lgp->lp_psc = (caddr_t)lp; 544 lp->lp_ifp = ifp; 545 lp->lp_lagg = lgp; 546 lp->lp_lsc = lsc; 547 lp->lp_ifma = rifma; 548 549 LIST_INSERT_HEAD(&lsc->lsc_ports, lp, lp_next); 550 551 lacp_fill_actorinfo(lp, &lp->lp_actor); 552 lacp_fill_markerinfo(lp, &lp->lp_marker); 553 lp->lp_state = 554 (active ? LACP_STATE_ACTIVITY : 0) | 555 (fast ? LACP_STATE_TIMEOUT : 0); 556 lp->lp_aggregator = NULL; 557 lacp_sm_rx_set_expired(lp); 558 LACP_UNLOCK(lsc); 559 lacp_linkstate(lgp); 560 561 return (0); 562 } 563 564 void 565 lacp_port_destroy(struct lagg_port *lgp) 566 { 567 struct lacp_port *lp = LACP_PORT(lgp); 568 struct lacp_softc *lsc = lp->lp_lsc; 569 int i; 570 571 LACP_LOCK(lsc); 572 for (i = 0; i < LACP_NTIMER; i++) { 573 LACP_TIMER_DISARM(lp, i); 574 } 575 576 lacp_disable_collecting(lp); 577 lacp_disable_distributing(lp); 578 lacp_unselect(lp); 579 580 /* The address may have already been removed by if_purgemaddrs() */ 581 if (!lgp->lp_detaching) 582 if_delmulti_ifma(lp->lp_ifma); 583 584 LIST_REMOVE(lp, lp_next); 585 LACP_UNLOCK(lsc); 586 free(lp, M_DEVBUF); 587 } 588 589 void 590 lacp_req(struct lagg_softc *sc, caddr_t data) 591 { 592 struct lacp_opreq *req = (struct lacp_opreq *)data; 593 struct lacp_softc *lsc = LACP_SOFTC(sc); 594 struct lacp_aggregator *la = lsc->lsc_active_aggregator; 595 596 LACP_LOCK(lsc); 597 bzero(req, sizeof(struct lacp_opreq)); 598 if (la != NULL) { 599 req->actor_prio = ntohs(la->la_actor.lip_systemid.lsi_prio); 600 memcpy(&req->actor_mac, &la->la_actor.lip_systemid.lsi_mac, 601 ETHER_ADDR_LEN); 602 req->actor_key = ntohs(la->la_actor.lip_key); 603 req->actor_portprio = ntohs(la->la_actor.lip_portid.lpi_prio); 604 req->actor_portno = ntohs(la->la_actor.lip_portid.lpi_portno); 605 req->actor_state = la->la_actor.lip_state; 606 607 req->partner_prio = ntohs(la->la_partner.lip_systemid.lsi_prio); 608 memcpy(&req->partner_mac, &la->la_partner.lip_systemid.lsi_mac, 609 ETHER_ADDR_LEN); 610 req->partner_key = ntohs(la->la_partner.lip_key); 611 req->partner_portprio = ntohs(la->la_partner.lip_portid.lpi_prio); 612 req->partner_portno = ntohs(la->la_partner.lip_portid.lpi_portno); 613 req->partner_state = la->la_partner.lip_state; 614 } 615 LACP_UNLOCK(lsc); 616 } 617 618 void 619 lacp_portreq(struct lagg_port *lgp, caddr_t data) 620 { 621 struct lacp_opreq *req = (struct lacp_opreq *)data; 622 struct lacp_port *lp = LACP_PORT(lgp); 623 struct lacp_softc *lsc = lp->lp_lsc; 624 625 LACP_LOCK(lsc); 626 req->actor_prio = ntohs(lp->lp_actor.lip_systemid.lsi_prio); 627 memcpy(&req->actor_mac, &lp->lp_actor.lip_systemid.lsi_mac, 628 ETHER_ADDR_LEN); 629 req->actor_key = ntohs(lp->lp_actor.lip_key); 630 req->actor_portprio = ntohs(lp->lp_actor.lip_portid.lpi_prio); 631 req->actor_portno = ntohs(lp->lp_actor.lip_portid.lpi_portno); 632 req->actor_state = lp->lp_actor.lip_state; 633 634 req->partner_prio = ntohs(lp->lp_partner.lip_systemid.lsi_prio); 635 memcpy(&req->partner_mac, &lp->lp_partner.lip_systemid.lsi_mac, 636 ETHER_ADDR_LEN); 637 req->partner_key = ntohs(lp->lp_partner.lip_key); 638 req->partner_portprio = ntohs(lp->lp_partner.lip_portid.lpi_prio); 639 req->partner_portno = ntohs(lp->lp_partner.lip_portid.lpi_portno); 640 req->partner_state = lp->lp_partner.lip_state; 641 LACP_UNLOCK(lsc); 642 } 643 644 static void 645 lacp_disable_collecting(struct lacp_port *lp) 646 { 647 LACP_DPRINTF((lp, "collecting disabled\n")); 648 lp->lp_state &= ~LACP_STATE_COLLECTING; 649 } 650 651 static void 652 lacp_enable_collecting(struct lacp_port *lp) 653 { 654 LACP_DPRINTF((lp, "collecting enabled\n")); 655 lp->lp_state |= LACP_STATE_COLLECTING; 656 } 657 658 static void 659 lacp_disable_distributing(struct lacp_port *lp) 660 { 661 struct lacp_aggregator *la = lp->lp_aggregator; 662 struct lacp_softc *lsc = lp->lp_lsc; 663 struct lagg_softc *sc = lsc->lsc_softc; 664 char buf[LACP_LAGIDSTR_MAX+1]; 665 666 LACP_LOCK_ASSERT(lsc); 667 668 if (la == NULL || (lp->lp_state & LACP_STATE_DISTRIBUTING) == 0) { 669 return; 670 } 671 672 KASSERT(!TAILQ_EMPTY(&la->la_ports), ("no aggregator ports")); 673 KASSERT(la->la_nports > 0, ("nports invalid (%d)", la->la_nports)); 674 KASSERT(la->la_refcnt >= la->la_nports, ("aggregator refcnt invalid")); 675 676 LACP_DPRINTF((lp, "disable distributing on aggregator %s, " 677 "nports %d -> %d\n", 678 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 679 la->la_nports, la->la_nports - 1)); 680 681 TAILQ_REMOVE(&la->la_ports, lp, lp_dist_q); 682 la->la_nports--; 683 sc->sc_active = la->la_nports; 684 685 if (lsc->lsc_active_aggregator == la) { 686 lacp_suppress_distributing(lsc, la); 687 lacp_select_active_aggregator(lsc); 688 /* regenerate the port map, the active aggregator has changed */ 689 lacp_update_portmap(lsc); 690 } 691 692 lp->lp_state &= ~LACP_STATE_DISTRIBUTING; 693 } 694 695 static void 696 lacp_enable_distributing(struct lacp_port *lp) 697 { 698 struct lacp_aggregator *la = lp->lp_aggregator; 699 struct lacp_softc *lsc = lp->lp_lsc; 700 struct lagg_softc *sc = lsc->lsc_softc; 701 char buf[LACP_LAGIDSTR_MAX+1]; 702 703 LACP_LOCK_ASSERT(lsc); 704 705 if ((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0) { 706 return; 707 } 708 709 LACP_DPRINTF((lp, "enable distributing on aggregator %s, " 710 "nports %d -> %d\n", 711 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 712 la->la_nports, la->la_nports + 1)); 713 714 KASSERT(la->la_refcnt > la->la_nports, ("aggregator refcnt invalid")); 715 TAILQ_INSERT_HEAD(&la->la_ports, lp, lp_dist_q); 716 la->la_nports++; 717 sc->sc_active = la->la_nports; 718 719 lp->lp_state |= LACP_STATE_DISTRIBUTING; 720 721 if (lsc->lsc_active_aggregator == la) { 722 lacp_suppress_distributing(lsc, la); 723 lacp_update_portmap(lsc); 724 } else 725 /* try to become the active aggregator */ 726 lacp_select_active_aggregator(lsc); 727 } 728 729 static void 730 lacp_transit_expire(void *vp) 731 { 732 struct lacp_softc *lsc = vp; 733 734 LACP_LOCK_ASSERT(lsc); 735 736 LACP_TRACE(NULL); 737 738 lsc->lsc_suppress_distributing = FALSE; 739 } 740 741 static void 742 lacp_attach_sysctl(struct lacp_softc *lsc, struct sysctl_oid *p_oid) 743 { 744 struct lagg_softc *sc = lsc->lsc_softc; 745 746 SYSCTL_ADD_UINT(&sc->ctx, SYSCTL_CHILDREN(p_oid), OID_AUTO, 747 "lacp_strict_mode", 748 CTLFLAG_RW, 749 &lsc->lsc_strict_mode, 750 lsc->lsc_strict_mode, 751 "Enable LACP strict mode"); 752 } 753 754 static void 755 lacp_attach_sysctl_debug(struct lacp_softc *lsc, struct sysctl_oid *p_oid) 756 { 757 struct lagg_softc *sc = lsc->lsc_softc; 758 struct sysctl_oid *oid; 759 760 /* Create a child of the parent lagg interface */ 761 oid = SYSCTL_ADD_NODE(&sc->ctx, SYSCTL_CHILDREN(p_oid), 762 OID_AUTO, "debug", CTLFLAG_RD, NULL, "DEBUG"); 763 764 SYSCTL_ADD_UINT(&sc->ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 765 "rx_test", 766 CTLFLAG_RW, 767 &lsc->lsc_debug.lsc_rx_test, 768 lsc->lsc_debug.lsc_rx_test, 769 "Bitmap of if_dunit entries to drop RX frames for"); 770 SYSCTL_ADD_UINT(&sc->ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 771 "tx_test", 772 CTLFLAG_RW, 773 &lsc->lsc_debug.lsc_tx_test, 774 lsc->lsc_debug.lsc_tx_test, 775 "Bitmap of if_dunit entries to drop TX frames for"); 776 } 777 778 int 779 lacp_attach(struct lagg_softc *sc) 780 { 781 struct lacp_softc *lsc; 782 struct sysctl_oid *oid; 783 784 lsc = malloc(sizeof(struct lacp_softc), 785 M_DEVBUF, M_NOWAIT|M_ZERO); 786 if (lsc == NULL) 787 return (ENOMEM); 788 789 sc->sc_psc = (caddr_t)lsc; 790 lsc->lsc_softc = sc; 791 792 lsc->lsc_hashkey = arc4random(); 793 lsc->lsc_active_aggregator = NULL; 794 lsc->lsc_strict_mode = 1; 795 LACP_LOCK_INIT(lsc); 796 TAILQ_INIT(&lsc->lsc_aggregators); 797 LIST_INIT(&lsc->lsc_ports); 798 799 /* Create a child of the parent lagg interface */ 800 oid = SYSCTL_ADD_NODE(&sc->ctx, SYSCTL_CHILDREN(sc->sc_oid), 801 OID_AUTO, "lacp", CTLFLAG_RD, NULL, "LACP"); 802 803 /* Attach sysctl nodes */ 804 lacp_attach_sysctl(lsc, oid); 805 lacp_attach_sysctl_debug(lsc, oid); 806 807 callout_init_mtx(&lsc->lsc_transit_callout, &lsc->lsc_mtx, 0); 808 callout_init_mtx(&lsc->lsc_callout, &lsc->lsc_mtx, 0); 809 810 /* if the lagg is already up then do the same */ 811 if (sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING) 812 lacp_init(sc); 813 814 return (0); 815 } 816 817 int 818 lacp_detach(struct lagg_softc *sc) 819 { 820 struct lacp_softc *lsc = LACP_SOFTC(sc); 821 822 KASSERT(TAILQ_EMPTY(&lsc->lsc_aggregators), 823 ("aggregators still active")); 824 KASSERT(lsc->lsc_active_aggregator == NULL, 825 ("aggregator still attached")); 826 827 sc->sc_psc = NULL; 828 callout_drain(&lsc->lsc_transit_callout); 829 callout_drain(&lsc->lsc_callout); 830 831 LACP_LOCK_DESTROY(lsc); 832 free(lsc, M_DEVBUF); 833 return (0); 834 } 835 836 void 837 lacp_init(struct lagg_softc *sc) 838 { 839 struct lacp_softc *lsc = LACP_SOFTC(sc); 840 841 LACP_LOCK(lsc); 842 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc); 843 LACP_UNLOCK(lsc); 844 } 845 846 void 847 lacp_stop(struct lagg_softc *sc) 848 { 849 struct lacp_softc *lsc = LACP_SOFTC(sc); 850 851 LACP_LOCK(lsc); 852 callout_stop(&lsc->lsc_transit_callout); 853 callout_stop(&lsc->lsc_callout); 854 LACP_UNLOCK(lsc); 855 } 856 857 struct lagg_port * 858 lacp_select_tx_port(struct lagg_softc *sc, struct mbuf *m) 859 { 860 struct lacp_softc *lsc = LACP_SOFTC(sc); 861 struct lacp_portmap *pm; 862 struct lacp_port *lp; 863 uint32_t hash; 864 865 if (__predict_false(lsc->lsc_suppress_distributing)) { 866 LACP_DPRINTF((NULL, "%s: waiting transit\n", __func__)); 867 return (NULL); 868 } 869 870 pm = &lsc->lsc_pmap[lsc->lsc_activemap]; 871 if (pm->pm_count == 0) { 872 LACP_DPRINTF((NULL, "%s: no active aggregator\n", __func__)); 873 return (NULL); 874 } 875 876 if (sc->use_flowid && (m->m_flags & M_FLOWID)) 877 hash = m->m_pkthdr.flowid; 878 else 879 hash = lagg_hashmbuf(sc, m, lsc->lsc_hashkey); 880 hash %= pm->pm_count; 881 lp = pm->pm_map[hash]; 882 883 KASSERT((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0, 884 ("aggregated port is not distributing")); 885 886 return (lp->lp_lagg); 887 } 888 /* 889 * lacp_suppress_distributing: drop transmit packets for a while 890 * to preserve packet ordering. 891 */ 892 893 static void 894 lacp_suppress_distributing(struct lacp_softc *lsc, struct lacp_aggregator *la) 895 { 896 struct lacp_port *lp; 897 898 if (lsc->lsc_active_aggregator != la) { 899 return; 900 } 901 902 LACP_TRACE(NULL); 903 904 lsc->lsc_suppress_distributing = TRUE; 905 906 /* send a marker frame down each port to verify the queues are empty */ 907 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { 908 lp->lp_flags |= LACP_PORT_MARK; 909 lacp_xmit_marker(lp); 910 } 911 912 /* set a timeout for the marker frames */ 913 callout_reset(&lsc->lsc_transit_callout, 914 LACP_TRANSIT_DELAY * hz / 1000, lacp_transit_expire, lsc); 915 } 916 917 static int 918 lacp_compare_peerinfo(const struct lacp_peerinfo *a, 919 const struct lacp_peerinfo *b) 920 { 921 return (memcmp(a, b, offsetof(struct lacp_peerinfo, lip_state))); 922 } 923 924 static int 925 lacp_compare_systemid(const struct lacp_systemid *a, 926 const struct lacp_systemid *b) 927 { 928 return (memcmp(a, b, sizeof(*a))); 929 } 930 931 #if 0 /* unused */ 932 static int 933 lacp_compare_portid(const struct lacp_portid *a, 934 const struct lacp_portid *b) 935 { 936 return (memcmp(a, b, sizeof(*a))); 937 } 938 #endif 939 940 static uint64_t 941 lacp_aggregator_bandwidth(struct lacp_aggregator *la) 942 { 943 struct lacp_port *lp; 944 uint64_t speed; 945 946 lp = TAILQ_FIRST(&la->la_ports); 947 if (lp == NULL) { 948 return (0); 949 } 950 951 speed = ifmedia_baudrate(lp->lp_media); 952 speed *= la->la_nports; 953 if (speed == 0) { 954 LACP_DPRINTF((lp, "speed 0? media=0x%x nports=%d\n", 955 lp->lp_media, la->la_nports)); 956 } 957 958 return (speed); 959 } 960 961 /* 962 * lacp_select_active_aggregator: select an aggregator to be used to transmit 963 * packets from lagg(4) interface. 964 */ 965 966 static void 967 lacp_select_active_aggregator(struct lacp_softc *lsc) 968 { 969 struct lacp_aggregator *la; 970 struct lacp_aggregator *best_la = NULL; 971 uint64_t best_speed = 0; 972 char buf[LACP_LAGIDSTR_MAX+1]; 973 974 LACP_TRACE(NULL); 975 976 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 977 uint64_t speed; 978 979 if (la->la_nports == 0) { 980 continue; 981 } 982 983 speed = lacp_aggregator_bandwidth(la); 984 LACP_DPRINTF((NULL, "%s, speed=%jd, nports=%d\n", 985 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 986 speed, la->la_nports)); 987 988 /* This aggregator is chosen if 989 * the partner has a better system priority 990 * or, the total aggregated speed is higher 991 * or, it is already the chosen aggregator 992 */ 993 if ((best_la != NULL && LACP_SYS_PRI(la->la_partner) < 994 LACP_SYS_PRI(best_la->la_partner)) || 995 speed > best_speed || 996 (speed == best_speed && 997 la == lsc->lsc_active_aggregator)) { 998 best_la = la; 999 best_speed = speed; 1000 } 1001 } 1002 1003 KASSERT(best_la == NULL || best_la->la_nports > 0, 1004 ("invalid aggregator refcnt")); 1005 KASSERT(best_la == NULL || !TAILQ_EMPTY(&best_la->la_ports), 1006 ("invalid aggregator list")); 1007 1008 if (lsc->lsc_active_aggregator != best_la) { 1009 LACP_DPRINTF((NULL, "active aggregator changed\n")); 1010 LACP_DPRINTF((NULL, "old %s\n", 1011 lacp_format_lagid_aggregator(lsc->lsc_active_aggregator, 1012 buf, sizeof(buf)))); 1013 } else { 1014 LACP_DPRINTF((NULL, "active aggregator not changed\n")); 1015 } 1016 LACP_DPRINTF((NULL, "new %s\n", 1017 lacp_format_lagid_aggregator(best_la, buf, sizeof(buf)))); 1018 1019 if (lsc->lsc_active_aggregator != best_la) { 1020 lsc->lsc_active_aggregator = best_la; 1021 lacp_update_portmap(lsc); 1022 if (best_la) { 1023 lacp_suppress_distributing(lsc, best_la); 1024 } 1025 } 1026 } 1027 1028 /* 1029 * Updated the inactive portmap array with the new list of ports and 1030 * make it live. 1031 */ 1032 static void 1033 lacp_update_portmap(struct lacp_softc *lsc) 1034 { 1035 struct lagg_softc *sc = lsc->lsc_softc; 1036 struct lacp_aggregator *la; 1037 struct lacp_portmap *p; 1038 struct lacp_port *lp; 1039 uint64_t speed; 1040 u_int newmap; 1041 int i; 1042 1043 newmap = lsc->lsc_activemap == 0 ? 1 : 0; 1044 p = &lsc->lsc_pmap[newmap]; 1045 la = lsc->lsc_active_aggregator; 1046 speed = 0; 1047 bzero(p, sizeof(struct lacp_portmap)); 1048 1049 if (la != NULL && la->la_nports > 0) { 1050 p->pm_count = la->la_nports; 1051 i = 0; 1052 TAILQ_FOREACH(lp, &la->la_ports, lp_dist_q) 1053 p->pm_map[i++] = lp; 1054 KASSERT(i == p->pm_count, ("Invalid port count")); 1055 speed = lacp_aggregator_bandwidth(la); 1056 } 1057 sc->sc_ifp->if_baudrate = speed; 1058 1059 /* switch the active portmap over */ 1060 atomic_store_rel_int(&lsc->lsc_activemap, newmap); 1061 LACP_DPRINTF((NULL, "Set table %d with %d ports\n", 1062 lsc->lsc_activemap, 1063 lsc->lsc_pmap[lsc->lsc_activemap].pm_count)); 1064 } 1065 1066 static uint16_t 1067 lacp_compose_key(struct lacp_port *lp) 1068 { 1069 struct lagg_port *lgp = lp->lp_lagg; 1070 struct lagg_softc *sc = lgp->lp_softc; 1071 u_int media = lp->lp_media; 1072 uint16_t key; 1073 1074 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) { 1075 1076 /* 1077 * non-aggregatable links should have unique keys. 1078 * 1079 * XXX this isn't really unique as if_index is 16 bit. 1080 */ 1081 1082 /* bit 0..14: (some bits of) if_index of this port */ 1083 key = lp->lp_ifp->if_index; 1084 /* bit 15: 1 */ 1085 key |= 0x8000; 1086 } else { 1087 u_int subtype = IFM_SUBTYPE(media); 1088 1089 KASSERT(IFM_TYPE(media) == IFM_ETHER, ("invalid media type")); 1090 KASSERT((media & IFM_FDX) != 0, ("aggregating HDX interface")); 1091 1092 /* bit 0..4: IFM_SUBTYPE */ 1093 key = subtype; 1094 /* bit 5..14: (some bits of) if_index of lagg device */ 1095 key |= 0x7fe0 & ((sc->sc_ifp->if_index) << 5); 1096 /* bit 15: 0 */ 1097 } 1098 return (htons(key)); 1099 } 1100 1101 static void 1102 lacp_aggregator_addref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1103 { 1104 char buf[LACP_LAGIDSTR_MAX+1]; 1105 1106 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1107 __func__, 1108 lacp_format_lagid(&la->la_actor, &la->la_partner, 1109 buf, sizeof(buf)), 1110 la->la_refcnt, la->la_refcnt + 1)); 1111 1112 KASSERT(la->la_refcnt > 0, ("refcount <= 0")); 1113 la->la_refcnt++; 1114 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcount")); 1115 } 1116 1117 static void 1118 lacp_aggregator_delref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1119 { 1120 char buf[LACP_LAGIDSTR_MAX+1]; 1121 1122 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1123 __func__, 1124 lacp_format_lagid(&la->la_actor, &la->la_partner, 1125 buf, sizeof(buf)), 1126 la->la_refcnt, la->la_refcnt - 1)); 1127 1128 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcnt")); 1129 la->la_refcnt--; 1130 if (la->la_refcnt > 0) { 1131 return; 1132 } 1133 1134 KASSERT(la->la_refcnt == 0, ("refcount not zero")); 1135 KASSERT(lsc->lsc_active_aggregator != la, ("aggregator active")); 1136 1137 TAILQ_REMOVE(&lsc->lsc_aggregators, la, la_q); 1138 1139 free(la, M_DEVBUF); 1140 } 1141 1142 /* 1143 * lacp_aggregator_get: allocate an aggregator. 1144 */ 1145 1146 static struct lacp_aggregator * 1147 lacp_aggregator_get(struct lacp_softc *lsc, struct lacp_port *lp) 1148 { 1149 struct lacp_aggregator *la; 1150 1151 la = malloc(sizeof(*la), M_DEVBUF, M_NOWAIT); 1152 if (la) { 1153 la->la_refcnt = 1; 1154 la->la_nports = 0; 1155 TAILQ_INIT(&la->la_ports); 1156 la->la_pending = 0; 1157 TAILQ_INSERT_TAIL(&lsc->lsc_aggregators, la, la_q); 1158 } 1159 1160 return (la); 1161 } 1162 1163 /* 1164 * lacp_fill_aggregator_id: setup a newly allocated aggregator from a port. 1165 */ 1166 1167 static void 1168 lacp_fill_aggregator_id(struct lacp_aggregator *la, const struct lacp_port *lp) 1169 { 1170 lacp_fill_aggregator_id_peer(&la->la_partner, &lp->lp_partner); 1171 lacp_fill_aggregator_id_peer(&la->la_actor, &lp->lp_actor); 1172 1173 la->la_actor.lip_state = lp->lp_state & LACP_STATE_AGGREGATION; 1174 } 1175 1176 static void 1177 lacp_fill_aggregator_id_peer(struct lacp_peerinfo *lpi_aggr, 1178 const struct lacp_peerinfo *lpi_port) 1179 { 1180 memset(lpi_aggr, 0, sizeof(*lpi_aggr)); 1181 lpi_aggr->lip_systemid = lpi_port->lip_systemid; 1182 lpi_aggr->lip_key = lpi_port->lip_key; 1183 } 1184 1185 /* 1186 * lacp_aggregator_is_compatible: check if a port can join to an aggregator. 1187 */ 1188 1189 static int 1190 lacp_aggregator_is_compatible(const struct lacp_aggregator *la, 1191 const struct lacp_port *lp) 1192 { 1193 if (!(lp->lp_state & LACP_STATE_AGGREGATION) || 1194 !(lp->lp_partner.lip_state & LACP_STATE_AGGREGATION)) { 1195 return (0); 1196 } 1197 1198 if (!(la->la_actor.lip_state & LACP_STATE_AGGREGATION)) { 1199 return (0); 1200 } 1201 1202 if (!lacp_peerinfo_is_compatible(&la->la_partner, &lp->lp_partner)) { 1203 return (0); 1204 } 1205 1206 if (!lacp_peerinfo_is_compatible(&la->la_actor, &lp->lp_actor)) { 1207 return (0); 1208 } 1209 1210 return (1); 1211 } 1212 1213 static int 1214 lacp_peerinfo_is_compatible(const struct lacp_peerinfo *a, 1215 const struct lacp_peerinfo *b) 1216 { 1217 if (memcmp(&a->lip_systemid, &b->lip_systemid, 1218 sizeof(a->lip_systemid))) { 1219 return (0); 1220 } 1221 1222 if (memcmp(&a->lip_key, &b->lip_key, sizeof(a->lip_key))) { 1223 return (0); 1224 } 1225 1226 return (1); 1227 } 1228 1229 static void 1230 lacp_port_enable(struct lacp_port *lp) 1231 { 1232 lp->lp_state |= LACP_STATE_AGGREGATION; 1233 } 1234 1235 static void 1236 lacp_port_disable(struct lacp_port *lp) 1237 { 1238 lacp_set_mux(lp, LACP_MUX_DETACHED); 1239 1240 lp->lp_state &= ~LACP_STATE_AGGREGATION; 1241 lp->lp_selected = LACP_UNSELECTED; 1242 lacp_sm_rx_record_default(lp); 1243 lp->lp_partner.lip_state &= ~LACP_STATE_AGGREGATION; 1244 lp->lp_state &= ~LACP_STATE_EXPIRED; 1245 } 1246 1247 /* 1248 * lacp_select: select an aggregator. create one if necessary. 1249 */ 1250 static void 1251 lacp_select(struct lacp_port *lp) 1252 { 1253 struct lacp_softc *lsc = lp->lp_lsc; 1254 struct lacp_aggregator *la; 1255 char buf[LACP_LAGIDSTR_MAX+1]; 1256 1257 if (lp->lp_aggregator) { 1258 return; 1259 } 1260 1261 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1262 ("timer_wait_while still active")); 1263 1264 LACP_DPRINTF((lp, "port lagid=%s\n", 1265 lacp_format_lagid(&lp->lp_actor, &lp->lp_partner, 1266 buf, sizeof(buf)))); 1267 1268 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 1269 if (lacp_aggregator_is_compatible(la, lp)) { 1270 break; 1271 } 1272 } 1273 1274 if (la == NULL) { 1275 la = lacp_aggregator_get(lsc, lp); 1276 if (la == NULL) { 1277 LACP_DPRINTF((lp, "aggregator creation failed\n")); 1278 1279 /* 1280 * will retry on the next tick. 1281 */ 1282 1283 return; 1284 } 1285 lacp_fill_aggregator_id(la, lp); 1286 LACP_DPRINTF((lp, "aggregator created\n")); 1287 } else { 1288 LACP_DPRINTF((lp, "compatible aggregator found\n")); 1289 if (la->la_refcnt == LACP_MAX_PORTS) 1290 return; 1291 lacp_aggregator_addref(lsc, la); 1292 } 1293 1294 LACP_DPRINTF((lp, "aggregator lagid=%s\n", 1295 lacp_format_lagid(&la->la_actor, &la->la_partner, 1296 buf, sizeof(buf)))); 1297 1298 lp->lp_aggregator = la; 1299 lp->lp_selected = LACP_SELECTED; 1300 } 1301 1302 /* 1303 * lacp_unselect: finish unselect/detach process. 1304 */ 1305 1306 static void 1307 lacp_unselect(struct lacp_port *lp) 1308 { 1309 struct lacp_softc *lsc = lp->lp_lsc; 1310 struct lacp_aggregator *la = lp->lp_aggregator; 1311 1312 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1313 ("timer_wait_while still active")); 1314 1315 if (la == NULL) { 1316 return; 1317 } 1318 1319 lp->lp_aggregator = NULL; 1320 lacp_aggregator_delref(lsc, la); 1321 } 1322 1323 /* mux machine */ 1324 1325 static void 1326 lacp_sm_mux(struct lacp_port *lp) 1327 { 1328 struct lagg_port *lgp = lp->lp_lagg; 1329 struct lagg_softc *sc = lgp->lp_softc; 1330 enum lacp_mux_state new_state; 1331 boolean_t p_sync = 1332 (lp->lp_partner.lip_state & LACP_STATE_SYNC) != 0; 1333 boolean_t p_collecting = 1334 (lp->lp_partner.lip_state & LACP_STATE_COLLECTING) != 0; 1335 enum lacp_selected selected = lp->lp_selected; 1336 struct lacp_aggregator *la; 1337 1338 if (lacp_debug > 1) 1339 lacp_dprintf(lp, "%s: state= 0x%x, selected= 0x%x, " 1340 "p_sync= 0x%x, p_collecting= 0x%x\n", __func__, 1341 lp->lp_mux_state, selected, p_sync, p_collecting); 1342 1343 re_eval: 1344 la = lp->lp_aggregator; 1345 KASSERT(lp->lp_mux_state == LACP_MUX_DETACHED || la != NULL, 1346 ("MUX not detached")); 1347 new_state = lp->lp_mux_state; 1348 switch (lp->lp_mux_state) { 1349 case LACP_MUX_DETACHED: 1350 if (selected != LACP_UNSELECTED) { 1351 new_state = LACP_MUX_WAITING; 1352 } 1353 break; 1354 case LACP_MUX_WAITING: 1355 KASSERT(la->la_pending > 0 || 1356 !LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1357 ("timer_wait_while still active")); 1358 if (selected == LACP_SELECTED && la->la_pending == 0) { 1359 new_state = LACP_MUX_ATTACHED; 1360 } else if (selected == LACP_UNSELECTED) { 1361 new_state = LACP_MUX_DETACHED; 1362 } 1363 break; 1364 case LACP_MUX_ATTACHED: 1365 if (selected == LACP_SELECTED && p_sync) { 1366 new_state = LACP_MUX_COLLECTING; 1367 } else if (selected != LACP_SELECTED) { 1368 new_state = LACP_MUX_DETACHED; 1369 } 1370 break; 1371 case LACP_MUX_COLLECTING: 1372 if (selected == LACP_SELECTED && p_sync && p_collecting) { 1373 new_state = LACP_MUX_DISTRIBUTING; 1374 } else if (selected != LACP_SELECTED || !p_sync) { 1375 new_state = LACP_MUX_ATTACHED; 1376 } 1377 break; 1378 case LACP_MUX_DISTRIBUTING: 1379 if (selected != LACP_SELECTED || !p_sync || !p_collecting) { 1380 new_state = LACP_MUX_COLLECTING; 1381 lacp_dprintf(lp, "Interface stopped DISTRIBUTING, possible flapping\n"); 1382 sc->sc_flapping++; 1383 } 1384 break; 1385 default: 1386 panic("%s: unknown state", __func__); 1387 } 1388 1389 if (lp->lp_mux_state == new_state) { 1390 return; 1391 } 1392 1393 lacp_set_mux(lp, new_state); 1394 goto re_eval; 1395 } 1396 1397 static void 1398 lacp_set_mux(struct lacp_port *lp, enum lacp_mux_state new_state) 1399 { 1400 struct lacp_aggregator *la = lp->lp_aggregator; 1401 1402 if (lp->lp_mux_state == new_state) { 1403 return; 1404 } 1405 1406 switch (new_state) { 1407 case LACP_MUX_DETACHED: 1408 lp->lp_state &= ~LACP_STATE_SYNC; 1409 lacp_disable_distributing(lp); 1410 lacp_disable_collecting(lp); 1411 lacp_sm_assert_ntt(lp); 1412 /* cancel timer */ 1413 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE)) { 1414 KASSERT(la->la_pending > 0, 1415 ("timer_wait_while not active")); 1416 la->la_pending--; 1417 } 1418 LACP_TIMER_DISARM(lp, LACP_TIMER_WAIT_WHILE); 1419 lacp_unselect(lp); 1420 break; 1421 case LACP_MUX_WAITING: 1422 LACP_TIMER_ARM(lp, LACP_TIMER_WAIT_WHILE, 1423 LACP_AGGREGATE_WAIT_TIME); 1424 la->la_pending++; 1425 break; 1426 case LACP_MUX_ATTACHED: 1427 lp->lp_state |= LACP_STATE_SYNC; 1428 lacp_disable_collecting(lp); 1429 lacp_sm_assert_ntt(lp); 1430 break; 1431 case LACP_MUX_COLLECTING: 1432 lacp_enable_collecting(lp); 1433 lacp_disable_distributing(lp); 1434 lacp_sm_assert_ntt(lp); 1435 break; 1436 case LACP_MUX_DISTRIBUTING: 1437 lacp_enable_distributing(lp); 1438 break; 1439 default: 1440 panic("%s: unknown state", __func__); 1441 } 1442 1443 LACP_DPRINTF((lp, "mux_state %d -> %d\n", lp->lp_mux_state, new_state)); 1444 1445 lp->lp_mux_state = new_state; 1446 } 1447 1448 static void 1449 lacp_sm_mux_timer(struct lacp_port *lp) 1450 { 1451 struct lacp_aggregator *la = lp->lp_aggregator; 1452 char buf[LACP_LAGIDSTR_MAX+1]; 1453 1454 KASSERT(la->la_pending > 0, ("no pending event")); 1455 1456 LACP_DPRINTF((lp, "%s: aggregator %s, pending %d -> %d\n", __func__, 1457 lacp_format_lagid(&la->la_actor, &la->la_partner, 1458 buf, sizeof(buf)), 1459 la->la_pending, la->la_pending - 1)); 1460 1461 la->la_pending--; 1462 } 1463 1464 /* periodic transmit machine */ 1465 1466 static void 1467 lacp_sm_ptx_update_timeout(struct lacp_port *lp, uint8_t oldpstate) 1468 { 1469 if (LACP_STATE_EQ(oldpstate, lp->lp_partner.lip_state, 1470 LACP_STATE_TIMEOUT)) { 1471 return; 1472 } 1473 1474 LACP_DPRINTF((lp, "partner timeout changed\n")); 1475 1476 /* 1477 * FAST_PERIODIC -> SLOW_PERIODIC 1478 * or 1479 * SLOW_PERIODIC (-> PERIODIC_TX) -> FAST_PERIODIC 1480 * 1481 * let lacp_sm_ptx_tx_schedule to update timeout. 1482 */ 1483 1484 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1485 1486 /* 1487 * if timeout has been shortened, assert NTT. 1488 */ 1489 1490 if ((lp->lp_partner.lip_state & LACP_STATE_TIMEOUT)) { 1491 lacp_sm_assert_ntt(lp); 1492 } 1493 } 1494 1495 static void 1496 lacp_sm_ptx_tx_schedule(struct lacp_port *lp) 1497 { 1498 int timeout; 1499 1500 if (!(lp->lp_state & LACP_STATE_ACTIVITY) && 1501 !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) { 1502 1503 /* 1504 * NO_PERIODIC 1505 */ 1506 1507 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1508 return; 1509 } 1510 1511 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_PERIODIC)) { 1512 return; 1513 } 1514 1515 timeout = (lp->lp_partner.lip_state & LACP_STATE_TIMEOUT) ? 1516 LACP_FAST_PERIODIC_TIME : LACP_SLOW_PERIODIC_TIME; 1517 1518 LACP_TIMER_ARM(lp, LACP_TIMER_PERIODIC, timeout); 1519 } 1520 1521 static void 1522 lacp_sm_ptx_timer(struct lacp_port *lp) 1523 { 1524 lacp_sm_assert_ntt(lp); 1525 } 1526 1527 static void 1528 lacp_sm_rx(struct lacp_port *lp, const struct lacpdu *du) 1529 { 1530 int timeout; 1531 1532 /* 1533 * check LACP_DISABLED first 1534 */ 1535 1536 if (!(lp->lp_state & LACP_STATE_AGGREGATION)) { 1537 return; 1538 } 1539 1540 /* 1541 * check loopback condition. 1542 */ 1543 1544 if (!lacp_compare_systemid(&du->ldu_actor.lip_systemid, 1545 &lp->lp_actor.lip_systemid)) { 1546 return; 1547 } 1548 1549 /* 1550 * EXPIRED, DEFAULTED, CURRENT -> CURRENT 1551 */ 1552 1553 lacp_sm_rx_update_selected(lp, du); 1554 lacp_sm_rx_update_ntt(lp, du); 1555 lacp_sm_rx_record_pdu(lp, du); 1556 1557 timeout = (lp->lp_state & LACP_STATE_TIMEOUT) ? 1558 LACP_SHORT_TIMEOUT_TIME : LACP_LONG_TIMEOUT_TIME; 1559 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, timeout); 1560 1561 lp->lp_state &= ~LACP_STATE_EXPIRED; 1562 1563 /* 1564 * kick transmit machine without waiting the next tick. 1565 */ 1566 1567 lacp_sm_tx(lp); 1568 } 1569 1570 static void 1571 lacp_sm_rx_set_expired(struct lacp_port *lp) 1572 { 1573 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1574 lp->lp_partner.lip_state |= LACP_STATE_TIMEOUT; 1575 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, LACP_SHORT_TIMEOUT_TIME); 1576 lp->lp_state |= LACP_STATE_EXPIRED; 1577 } 1578 1579 static void 1580 lacp_sm_rx_timer(struct lacp_port *lp) 1581 { 1582 if ((lp->lp_state & LACP_STATE_EXPIRED) == 0) { 1583 /* CURRENT -> EXPIRED */ 1584 LACP_DPRINTF((lp, "%s: CURRENT -> EXPIRED\n", __func__)); 1585 lacp_sm_rx_set_expired(lp); 1586 } else { 1587 /* EXPIRED -> DEFAULTED */ 1588 LACP_DPRINTF((lp, "%s: EXPIRED -> DEFAULTED\n", __func__)); 1589 lacp_sm_rx_update_default_selected(lp); 1590 lacp_sm_rx_record_default(lp); 1591 lp->lp_state &= ~LACP_STATE_EXPIRED; 1592 } 1593 } 1594 1595 static void 1596 lacp_sm_rx_record_pdu(struct lacp_port *lp, const struct lacpdu *du) 1597 { 1598 boolean_t active; 1599 uint8_t oldpstate; 1600 char buf[LACP_STATESTR_MAX+1]; 1601 1602 LACP_TRACE(lp); 1603 1604 oldpstate = lp->lp_partner.lip_state; 1605 1606 active = (du->ldu_actor.lip_state & LACP_STATE_ACTIVITY) 1607 || ((lp->lp_state & LACP_STATE_ACTIVITY) && 1608 (du->ldu_partner.lip_state & LACP_STATE_ACTIVITY)); 1609 1610 lp->lp_partner = du->ldu_actor; 1611 if (active && 1612 ((LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1613 LACP_STATE_AGGREGATION) && 1614 !lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner)) 1615 || (du->ldu_partner.lip_state & LACP_STATE_AGGREGATION) == 0)) { 1616 /* XXX nothing? */ 1617 } else { 1618 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1619 } 1620 1621 lp->lp_state &= ~LACP_STATE_DEFAULTED; 1622 1623 if (oldpstate != lp->lp_partner.lip_state) { 1624 LACP_DPRINTF((lp, "old pstate %s\n", 1625 lacp_format_state(oldpstate, buf, sizeof(buf)))); 1626 LACP_DPRINTF((lp, "new pstate %s\n", 1627 lacp_format_state(lp->lp_partner.lip_state, buf, 1628 sizeof(buf)))); 1629 } 1630 1631 /* XXX Hack, still need to implement 5.4.9 para 2,3,4 */ 1632 if (lp->lp_lsc->lsc_strict_mode) 1633 lp->lp_partner.lip_state |= LACP_STATE_SYNC; 1634 1635 lacp_sm_ptx_update_timeout(lp, oldpstate); 1636 } 1637 1638 static void 1639 lacp_sm_rx_update_ntt(struct lacp_port *lp, const struct lacpdu *du) 1640 { 1641 1642 LACP_TRACE(lp); 1643 1644 if (lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner) || 1645 !LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1646 LACP_STATE_ACTIVITY | LACP_STATE_SYNC | LACP_STATE_AGGREGATION)) { 1647 LACP_DPRINTF((lp, "%s: assert ntt\n", __func__)); 1648 lacp_sm_assert_ntt(lp); 1649 } 1650 } 1651 1652 static void 1653 lacp_sm_rx_record_default(struct lacp_port *lp) 1654 { 1655 uint8_t oldpstate; 1656 1657 LACP_TRACE(lp); 1658 1659 oldpstate = lp->lp_partner.lip_state; 1660 if (lp->lp_lsc->lsc_strict_mode) 1661 lp->lp_partner = lacp_partner_admin_strict; 1662 else 1663 lp->lp_partner = lacp_partner_admin_optimistic;; 1664 lp->lp_state |= LACP_STATE_DEFAULTED; 1665 lacp_sm_ptx_update_timeout(lp, oldpstate); 1666 } 1667 1668 static void 1669 lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *lp, 1670 const struct lacp_peerinfo *info) 1671 { 1672 1673 LACP_TRACE(lp); 1674 1675 if (lacp_compare_peerinfo(&lp->lp_partner, info) || 1676 !LACP_STATE_EQ(lp->lp_partner.lip_state, info->lip_state, 1677 LACP_STATE_AGGREGATION)) { 1678 lp->lp_selected = LACP_UNSELECTED; 1679 /* mux machine will clean up lp->lp_aggregator */ 1680 } 1681 } 1682 1683 static void 1684 lacp_sm_rx_update_selected(struct lacp_port *lp, const struct lacpdu *du) 1685 { 1686 1687 LACP_TRACE(lp); 1688 1689 lacp_sm_rx_update_selected_from_peerinfo(lp, &du->ldu_actor); 1690 } 1691 1692 static void 1693 lacp_sm_rx_update_default_selected(struct lacp_port *lp) 1694 { 1695 1696 LACP_TRACE(lp); 1697 1698 if (lp->lp_lsc->lsc_strict_mode) 1699 lacp_sm_rx_update_selected_from_peerinfo(lp, 1700 &lacp_partner_admin_strict); 1701 else 1702 lacp_sm_rx_update_selected_from_peerinfo(lp, 1703 &lacp_partner_admin_optimistic); 1704 } 1705 1706 /* transmit machine */ 1707 1708 static void 1709 lacp_sm_tx(struct lacp_port *lp) 1710 { 1711 int error = 0; 1712 1713 if (!(lp->lp_state & LACP_STATE_AGGREGATION) 1714 #if 1 1715 || (!(lp->lp_state & LACP_STATE_ACTIVITY) 1716 && !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) 1717 #endif 1718 ) { 1719 lp->lp_flags &= ~LACP_PORT_NTT; 1720 } 1721 1722 if (!(lp->lp_flags & LACP_PORT_NTT)) { 1723 return; 1724 } 1725 1726 /* Rate limit to 3 PDUs per LACP_FAST_PERIODIC_TIME */ 1727 if (ppsratecheck(&lp->lp_last_lacpdu, &lp->lp_lacpdu_sent, 1728 (3 / LACP_FAST_PERIODIC_TIME)) == 0) { 1729 LACP_DPRINTF((lp, "rate limited pdu\n")); 1730 return; 1731 } 1732 1733 if (((1 << lp->lp_ifp->if_dunit) & lp->lp_lsc->lsc_debug.lsc_tx_test) == 0) { 1734 error = lacp_xmit_lacpdu(lp); 1735 } else { 1736 LACP_TPRINTF((lp, "Dropping TX PDU\n")); 1737 } 1738 1739 if (error == 0) { 1740 lp->lp_flags &= ~LACP_PORT_NTT; 1741 } else { 1742 LACP_DPRINTF((lp, "lacpdu transmit failure, error %d\n", 1743 error)); 1744 } 1745 } 1746 1747 static void 1748 lacp_sm_assert_ntt(struct lacp_port *lp) 1749 { 1750 1751 lp->lp_flags |= LACP_PORT_NTT; 1752 } 1753 1754 static void 1755 lacp_run_timers(struct lacp_port *lp) 1756 { 1757 int i; 1758 1759 for (i = 0; i < LACP_NTIMER; i++) { 1760 KASSERT(lp->lp_timer[i] >= 0, 1761 ("invalid timer value %d", lp->lp_timer[i])); 1762 if (lp->lp_timer[i] == 0) { 1763 continue; 1764 } else if (--lp->lp_timer[i] <= 0) { 1765 if (lacp_timer_funcs[i]) { 1766 (*lacp_timer_funcs[i])(lp); 1767 } 1768 } 1769 } 1770 } 1771 1772 int 1773 lacp_marker_input(struct lacp_port *lp, struct mbuf *m) 1774 { 1775 struct lacp_softc *lsc = lp->lp_lsc; 1776 struct lagg_port *lgp = lp->lp_lagg; 1777 struct lacp_port *lp2; 1778 struct markerdu *mdu; 1779 int error = 0; 1780 int pending = 0; 1781 1782 if (m->m_pkthdr.len != sizeof(*mdu)) { 1783 goto bad; 1784 } 1785 1786 if ((m->m_flags & M_MCAST) == 0) { 1787 goto bad; 1788 } 1789 1790 if (m->m_len < sizeof(*mdu)) { 1791 m = m_pullup(m, sizeof(*mdu)); 1792 if (m == NULL) { 1793 return (ENOMEM); 1794 } 1795 } 1796 1797 mdu = mtod(m, struct markerdu *); 1798 1799 if (memcmp(&mdu->mdu_eh.ether_dhost, 1800 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 1801 goto bad; 1802 } 1803 1804 if (mdu->mdu_sph.sph_version != 1) { 1805 goto bad; 1806 } 1807 1808 switch (mdu->mdu_tlv.tlv_type) { 1809 case MARKER_TYPE_INFO: 1810 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 1811 marker_info_tlv_template, TRUE)) { 1812 goto bad; 1813 } 1814 mdu->mdu_tlv.tlv_type = MARKER_TYPE_RESPONSE; 1815 memcpy(&mdu->mdu_eh.ether_dhost, 1816 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN); 1817 memcpy(&mdu->mdu_eh.ether_shost, 1818 lgp->lp_lladdr, ETHER_ADDR_LEN); 1819 error = lagg_enqueue(lp->lp_ifp, m); 1820 break; 1821 1822 case MARKER_TYPE_RESPONSE: 1823 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 1824 marker_response_tlv_template, TRUE)) { 1825 goto bad; 1826 } 1827 LACP_DPRINTF((lp, "marker response, port=%u, sys=%6D, id=%u\n", 1828 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, 1829 ":", ntohl(mdu->mdu_info.mi_rq_xid))); 1830 1831 /* Verify that it is the last marker we sent out */ 1832 if (memcmp(&mdu->mdu_info, &lp->lp_marker, 1833 sizeof(struct lacp_markerinfo))) 1834 goto bad; 1835 1836 LACP_LOCK(lsc); 1837 lp->lp_flags &= ~LACP_PORT_MARK; 1838 1839 if (lsc->lsc_suppress_distributing) { 1840 /* Check if any ports are waiting for a response */ 1841 LIST_FOREACH(lp2, &lsc->lsc_ports, lp_next) { 1842 if (lp2->lp_flags & LACP_PORT_MARK) { 1843 pending = 1; 1844 break; 1845 } 1846 } 1847 1848 if (pending == 0) { 1849 /* All interface queues are clear */ 1850 LACP_DPRINTF((NULL, "queue flush complete\n")); 1851 lsc->lsc_suppress_distributing = FALSE; 1852 } 1853 } 1854 LACP_UNLOCK(lsc); 1855 m_freem(m); 1856 break; 1857 1858 default: 1859 goto bad; 1860 } 1861 1862 return (error); 1863 1864 bad: 1865 LACP_DPRINTF((lp, "bad marker frame\n")); 1866 m_freem(m); 1867 return (EINVAL); 1868 } 1869 1870 static int 1871 tlv_check(const void *p, size_t size, const struct tlvhdr *tlv, 1872 const struct tlv_template *tmpl, boolean_t check_type) 1873 { 1874 while (/* CONSTCOND */ 1) { 1875 if ((const char *)tlv - (const char *)p + sizeof(*tlv) > size) { 1876 return (EINVAL); 1877 } 1878 if ((check_type && tlv->tlv_type != tmpl->tmpl_type) || 1879 tlv->tlv_length != tmpl->tmpl_length) { 1880 return (EINVAL); 1881 } 1882 if (tmpl->tmpl_type == 0) { 1883 break; 1884 } 1885 tlv = (const struct tlvhdr *) 1886 ((const char *)tlv + tlv->tlv_length); 1887 tmpl++; 1888 } 1889 1890 return (0); 1891 } 1892 1893 /* Debugging */ 1894 const char * 1895 lacp_format_mac(const uint8_t *mac, char *buf, size_t buflen) 1896 { 1897 snprintf(buf, buflen, "%02X-%02X-%02X-%02X-%02X-%02X", 1898 (int)mac[0], 1899 (int)mac[1], 1900 (int)mac[2], 1901 (int)mac[3], 1902 (int)mac[4], 1903 (int)mac[5]); 1904 1905 return (buf); 1906 } 1907 1908 const char * 1909 lacp_format_systemid(const struct lacp_systemid *sysid, 1910 char *buf, size_t buflen) 1911 { 1912 char macbuf[LACP_MACSTR_MAX+1]; 1913 1914 snprintf(buf, buflen, "%04X,%s", 1915 ntohs(sysid->lsi_prio), 1916 lacp_format_mac(sysid->lsi_mac, macbuf, sizeof(macbuf))); 1917 1918 return (buf); 1919 } 1920 1921 const char * 1922 lacp_format_portid(const struct lacp_portid *portid, char *buf, size_t buflen) 1923 { 1924 snprintf(buf, buflen, "%04X,%04X", 1925 ntohs(portid->lpi_prio), 1926 ntohs(portid->lpi_portno)); 1927 1928 return (buf); 1929 } 1930 1931 const char * 1932 lacp_format_partner(const struct lacp_peerinfo *peer, char *buf, size_t buflen) 1933 { 1934 char sysid[LACP_SYSTEMIDSTR_MAX+1]; 1935 char portid[LACP_PORTIDSTR_MAX+1]; 1936 1937 snprintf(buf, buflen, "(%s,%04X,%s)", 1938 lacp_format_systemid(&peer->lip_systemid, sysid, sizeof(sysid)), 1939 ntohs(peer->lip_key), 1940 lacp_format_portid(&peer->lip_portid, portid, sizeof(portid))); 1941 1942 return (buf); 1943 } 1944 1945 const char * 1946 lacp_format_lagid(const struct lacp_peerinfo *a, 1947 const struct lacp_peerinfo *b, char *buf, size_t buflen) 1948 { 1949 char astr[LACP_PARTNERSTR_MAX+1]; 1950 char bstr[LACP_PARTNERSTR_MAX+1]; 1951 1952 #if 0 1953 /* 1954 * there's a convention to display small numbered peer 1955 * in the left. 1956 */ 1957 1958 if (lacp_compare_peerinfo(a, b) > 0) { 1959 const struct lacp_peerinfo *t; 1960 1961 t = a; 1962 a = b; 1963 b = t; 1964 } 1965 #endif 1966 1967 snprintf(buf, buflen, "[%s,%s]", 1968 lacp_format_partner(a, astr, sizeof(astr)), 1969 lacp_format_partner(b, bstr, sizeof(bstr))); 1970 1971 return (buf); 1972 } 1973 1974 const char * 1975 lacp_format_lagid_aggregator(const struct lacp_aggregator *la, 1976 char *buf, size_t buflen) 1977 { 1978 if (la == NULL) { 1979 return ("(none)"); 1980 } 1981 1982 return (lacp_format_lagid(&la->la_actor, &la->la_partner, buf, buflen)); 1983 } 1984 1985 const char * 1986 lacp_format_state(uint8_t state, char *buf, size_t buflen) 1987 { 1988 snprintf(buf, buflen, "%b", state, LACP_STATE_BITS); 1989 return (buf); 1990 } 1991 1992 static void 1993 lacp_dump_lacpdu(const struct lacpdu *du) 1994 { 1995 char buf[LACP_PARTNERSTR_MAX+1]; 1996 char buf2[LACP_STATESTR_MAX+1]; 1997 1998 printf("actor=%s\n", 1999 lacp_format_partner(&du->ldu_actor, buf, sizeof(buf))); 2000 printf("actor.state=%s\n", 2001 lacp_format_state(du->ldu_actor.lip_state, buf2, sizeof(buf2))); 2002 printf("partner=%s\n", 2003 lacp_format_partner(&du->ldu_partner, buf, sizeof(buf))); 2004 printf("partner.state=%s\n", 2005 lacp_format_state(du->ldu_partner.lip_state, buf2, sizeof(buf2))); 2006 2007 printf("maxdelay=%d\n", ntohs(du->ldu_collector.lci_maxdelay)); 2008 } 2009 2010 static void 2011 lacp_dprintf(const struct lacp_port *lp, const char *fmt, ...) 2012 { 2013 va_list va; 2014 2015 if (lp) { 2016 printf("%s: ", lp->lp_ifp->if_xname); 2017 } 2018 2019 va_start(va, fmt); 2020 vprintf(fmt, va); 2021 va_end(va); 2022 } 2023