ieee8023ad_lacp.c revision 287808
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: stable/10/sys/net/ieee8023ad_lacp.c 287808 2015-09-15 05:19:10Z hiren $"); 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 63const uint8_t ethermulticastaddr_slowprotocols[ETHER_ADDR_LEN] = 64 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x02 }; 65 66static 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 76static 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 82static 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 88typedef void (*lacp_timer_func_t)(struct lacp_port *); 89 90static void lacp_fill_actorinfo(struct lacp_port *, struct lacp_peerinfo *); 91static void lacp_fill_markerinfo(struct lacp_port *, 92 struct lacp_markerinfo *); 93 94static uint64_t lacp_aggregator_bandwidth(struct lacp_aggregator *); 95static void lacp_suppress_distributing(struct lacp_softc *, 96 struct lacp_aggregator *); 97static void lacp_transit_expire(void *); 98static void lacp_update_portmap(struct lacp_softc *); 99static void lacp_select_active_aggregator(struct lacp_softc *); 100static uint16_t lacp_compose_key(struct lacp_port *); 101static int tlv_check(const void *, size_t, const struct tlvhdr *, 102 const struct tlv_template *, boolean_t); 103static void lacp_tick(void *); 104 105static void lacp_fill_aggregator_id(struct lacp_aggregator *, 106 const struct lacp_port *); 107static void lacp_fill_aggregator_id_peer(struct lacp_peerinfo *, 108 const struct lacp_peerinfo *); 109static int lacp_aggregator_is_compatible(const struct lacp_aggregator *, 110 const struct lacp_port *); 111static int lacp_peerinfo_is_compatible(const struct lacp_peerinfo *, 112 const struct lacp_peerinfo *); 113 114static struct lacp_aggregator *lacp_aggregator_get(struct lacp_softc *, 115 struct lacp_port *); 116static void lacp_aggregator_addref(struct lacp_softc *, 117 struct lacp_aggregator *); 118static void lacp_aggregator_delref(struct lacp_softc *, 119 struct lacp_aggregator *); 120 121/* receive machine */ 122 123static int lacp_pdu_input(struct lacp_port *, struct mbuf *); 124static int lacp_marker_input(struct lacp_port *, struct mbuf *); 125static void lacp_sm_rx(struct lacp_port *, const struct lacpdu *); 126static void lacp_sm_rx_timer(struct lacp_port *); 127static void lacp_sm_rx_set_expired(struct lacp_port *); 128static void lacp_sm_rx_update_ntt(struct lacp_port *, 129 const struct lacpdu *); 130static void lacp_sm_rx_record_pdu(struct lacp_port *, 131 const struct lacpdu *); 132static void lacp_sm_rx_update_selected(struct lacp_port *, 133 const struct lacpdu *); 134static void lacp_sm_rx_record_default(struct lacp_port *); 135static void lacp_sm_rx_update_default_selected(struct lacp_port *); 136static void lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *, 137 const struct lacp_peerinfo *); 138 139/* mux machine */ 140 141static void lacp_sm_mux(struct lacp_port *); 142static void lacp_set_mux(struct lacp_port *, enum lacp_mux_state); 143static void lacp_sm_mux_timer(struct lacp_port *); 144 145/* periodic transmit machine */ 146 147static void lacp_sm_ptx_update_timeout(struct lacp_port *, uint8_t); 148static void lacp_sm_ptx_tx_schedule(struct lacp_port *); 149static void lacp_sm_ptx_timer(struct lacp_port *); 150 151/* transmit machine */ 152 153static void lacp_sm_tx(struct lacp_port *); 154static void lacp_sm_assert_ntt(struct lacp_port *); 155 156static void lacp_run_timers(struct lacp_port *); 157static int lacp_compare_peerinfo(const struct lacp_peerinfo *, 158 const struct lacp_peerinfo *); 159static int lacp_compare_systemid(const struct lacp_systemid *, 160 const struct lacp_systemid *); 161static void lacp_port_enable(struct lacp_port *); 162static void lacp_port_disable(struct lacp_port *); 163static void lacp_select(struct lacp_port *); 164static void lacp_unselect(struct lacp_port *); 165static void lacp_disable_collecting(struct lacp_port *); 166static void lacp_enable_collecting(struct lacp_port *); 167static void lacp_disable_distributing(struct lacp_port *); 168static void lacp_enable_distributing(struct lacp_port *); 169static int lacp_xmit_lacpdu(struct lacp_port *); 170static int lacp_xmit_marker(struct lacp_port *); 171 172/* Debugging */ 173 174static void lacp_dump_lacpdu(const struct lacpdu *); 175static const char *lacp_format_partner(const struct lacp_peerinfo *, char *, 176 size_t); 177static const char *lacp_format_lagid(const struct lacp_peerinfo *, 178 const struct lacp_peerinfo *, char *, size_t); 179static const char *lacp_format_lagid_aggregator(const struct lacp_aggregator *, 180 char *, size_t); 181static const char *lacp_format_state(uint8_t, char *, size_t); 182static const char *lacp_format_mac(const uint8_t *, char *, size_t); 183static const char *lacp_format_systemid(const struct lacp_systemid *, char *, 184 size_t); 185static const char *lacp_format_portid(const struct lacp_portid *, char *, 186 size_t); 187static void lacp_dprintf(const struct lacp_port *, const char *, ...) 188 __attribute__((__format__(__printf__, 2, 3))); 189 190static VNET_DEFINE(int, lacp_debug); 191#define V_lacp_debug VNET(lacp_debug) 192SYSCTL_NODE(_net_link_lagg, OID_AUTO, lacp, CTLFLAG_RD, 0, "ieee802.3ad"); 193SYSCTL_INT(_net_link_lagg_lacp, OID_AUTO, debug, CTLFLAG_RWTUN | CTLFLAG_VNET, 194 &VNET_NAME(lacp_debug), 0, "Enable LACP debug logging (1=debug, 2=trace)"); 195 196#define LACP_DPRINTF(a) if (V_lacp_debug & 0x01) { lacp_dprintf a ; } 197#define LACP_TRACE(a) if (V_lacp_debug & 0x02) { lacp_dprintf(a,"%s\n",__func__); } 198#define LACP_TPRINTF(a) if (V_lacp_debug & 0x04) { lacp_dprintf a ; } 199 200/* 201 * partner administration variables. 202 * XXX should be configurable. 203 */ 204 205static 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 212static 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 218static 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 224struct mbuf * 225lacp_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 */ 253static int 254lacp_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 (V_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 318bad: 319 m_freem(m); 320 return (EINVAL); 321} 322 323static void 324lacp_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 337static void 338lacp_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 348static int 349lacp_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 (V_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 402static int 403lacp_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 443void 444lacp_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 488static void 489lacp_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 CURVNET_SET(lp->lp_ifp->if_vnet); 499 lacp_run_timers(lp); 500 501 lacp_select(lp); 502 lacp_sm_mux(lp); 503 lacp_sm_tx(lp); 504 lacp_sm_ptx_tx_schedule(lp); 505 CURVNET_RESTORE(); 506 } 507 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc); 508} 509 510int 511lacp_port_create(struct lagg_port *lgp) 512{ 513 struct lagg_softc *sc = lgp->lp_softc; 514 struct lacp_softc *lsc = LACP_SOFTC(sc); 515 struct lacp_port *lp; 516 struct ifnet *ifp = lgp->lp_ifp; 517 struct sockaddr_dl sdl; 518 struct ifmultiaddr *rifma = NULL; 519 int error; 520 521 boolean_t active = TRUE; /* XXX should be configurable */ 522 boolean_t fast = FALSE; /* Configurable via ioctl */ 523 524 bzero((char *)&sdl, sizeof(sdl)); 525 sdl.sdl_len = sizeof(sdl); 526 sdl.sdl_family = AF_LINK; 527 sdl.sdl_index = ifp->if_index; 528 sdl.sdl_type = IFT_ETHER; 529 sdl.sdl_alen = ETHER_ADDR_LEN; 530 531 bcopy(ðermulticastaddr_slowprotocols, 532 LLADDR(&sdl), ETHER_ADDR_LEN); 533 error = if_addmulti(ifp, (struct sockaddr *)&sdl, &rifma); 534 if (error) { 535 printf("%s: ADDMULTI failed on %s\n", __func__, lgp->lp_ifname); 536 return (error); 537 } 538 539 lp = malloc(sizeof(struct lacp_port), 540 M_DEVBUF, M_NOWAIT|M_ZERO); 541 if (lp == NULL) 542 return (ENOMEM); 543 544 LACP_LOCK(lsc); 545 lgp->lp_psc = (caddr_t)lp; 546 lp->lp_ifp = ifp; 547 lp->lp_lagg = lgp; 548 lp->lp_lsc = lsc; 549 lp->lp_ifma = rifma; 550 551 LIST_INSERT_HEAD(&lsc->lsc_ports, lp, lp_next); 552 553 lacp_fill_actorinfo(lp, &lp->lp_actor); 554 lacp_fill_markerinfo(lp, &lp->lp_marker); 555 lp->lp_state = 556 (active ? LACP_STATE_ACTIVITY : 0) | 557 (fast ? LACP_STATE_TIMEOUT : 0); 558 lp->lp_aggregator = NULL; 559 lacp_sm_rx_set_expired(lp); 560 LACP_UNLOCK(lsc); 561 lacp_linkstate(lgp); 562 563 return (0); 564} 565 566void 567lacp_port_destroy(struct lagg_port *lgp) 568{ 569 struct lacp_port *lp = LACP_PORT(lgp); 570 struct lacp_softc *lsc = lp->lp_lsc; 571 int i; 572 573 LACP_LOCK(lsc); 574 for (i = 0; i < LACP_NTIMER; i++) { 575 LACP_TIMER_DISARM(lp, i); 576 } 577 578 lacp_disable_collecting(lp); 579 lacp_disable_distributing(lp); 580 lacp_unselect(lp); 581 582 LIST_REMOVE(lp, lp_next); 583 LACP_UNLOCK(lsc); 584 585 /* The address may have already been removed by if_purgemaddrs() */ 586 if (!lgp->lp_detaching) 587 if_delmulti_ifma(lp->lp_ifma); 588 589 free(lp, M_DEVBUF); 590} 591 592void 593lacp_req(struct lagg_softc *sc, caddr_t data) 594{ 595 struct lacp_opreq *req = (struct lacp_opreq *)data; 596 struct lacp_softc *lsc = LACP_SOFTC(sc); 597 struct lacp_aggregator *la; 598 599 bzero(req, sizeof(struct lacp_opreq)); 600 601 /* 602 * If the LACP softc is NULL, return with the opreq structure full of 603 * zeros. It is normal for the softc to be NULL while the lagg is 604 * being destroyed. 605 */ 606 if (NULL == lsc) 607 return; 608 609 la = lsc->lsc_active_aggregator; 610 LACP_LOCK(lsc); 611 if (la != NULL) { 612 req->actor_prio = ntohs(la->la_actor.lip_systemid.lsi_prio); 613 memcpy(&req->actor_mac, &la->la_actor.lip_systemid.lsi_mac, 614 ETHER_ADDR_LEN); 615 req->actor_key = ntohs(la->la_actor.lip_key); 616 req->actor_portprio = ntohs(la->la_actor.lip_portid.lpi_prio); 617 req->actor_portno = ntohs(la->la_actor.lip_portid.lpi_portno); 618 req->actor_state = la->la_actor.lip_state; 619 620 req->partner_prio = ntohs(la->la_partner.lip_systemid.lsi_prio); 621 memcpy(&req->partner_mac, &la->la_partner.lip_systemid.lsi_mac, 622 ETHER_ADDR_LEN); 623 req->partner_key = ntohs(la->la_partner.lip_key); 624 req->partner_portprio = ntohs(la->la_partner.lip_portid.lpi_prio); 625 req->partner_portno = ntohs(la->la_partner.lip_portid.lpi_portno); 626 req->partner_state = la->la_partner.lip_state; 627 } 628 LACP_UNLOCK(lsc); 629} 630 631void 632lacp_portreq(struct lagg_port *lgp, caddr_t data) 633{ 634 struct lacp_opreq *req = (struct lacp_opreq *)data; 635 struct lacp_port *lp = LACP_PORT(lgp); 636 struct lacp_softc *lsc = lp->lp_lsc; 637 638 LACP_LOCK(lsc); 639 req->actor_prio = ntohs(lp->lp_actor.lip_systemid.lsi_prio); 640 memcpy(&req->actor_mac, &lp->lp_actor.lip_systemid.lsi_mac, 641 ETHER_ADDR_LEN); 642 req->actor_key = ntohs(lp->lp_actor.lip_key); 643 req->actor_portprio = ntohs(lp->lp_actor.lip_portid.lpi_prio); 644 req->actor_portno = ntohs(lp->lp_actor.lip_portid.lpi_portno); 645 req->actor_state = lp->lp_actor.lip_state; 646 647 req->partner_prio = ntohs(lp->lp_partner.lip_systemid.lsi_prio); 648 memcpy(&req->partner_mac, &lp->lp_partner.lip_systemid.lsi_mac, 649 ETHER_ADDR_LEN); 650 req->partner_key = ntohs(lp->lp_partner.lip_key); 651 req->partner_portprio = ntohs(lp->lp_partner.lip_portid.lpi_prio); 652 req->partner_portno = ntohs(lp->lp_partner.lip_portid.lpi_portno); 653 req->partner_state = lp->lp_partner.lip_state; 654 LACP_UNLOCK(lsc); 655} 656 657static void 658lacp_disable_collecting(struct lacp_port *lp) 659{ 660 LACP_DPRINTF((lp, "collecting disabled\n")); 661 lp->lp_state &= ~LACP_STATE_COLLECTING; 662} 663 664static void 665lacp_enable_collecting(struct lacp_port *lp) 666{ 667 LACP_DPRINTF((lp, "collecting enabled\n")); 668 lp->lp_state |= LACP_STATE_COLLECTING; 669} 670 671static void 672lacp_disable_distributing(struct lacp_port *lp) 673{ 674 struct lacp_aggregator *la = lp->lp_aggregator; 675 struct lacp_softc *lsc = lp->lp_lsc; 676 struct lagg_softc *sc = lsc->lsc_softc; 677 char buf[LACP_LAGIDSTR_MAX+1]; 678 679 LACP_LOCK_ASSERT(lsc); 680 681 if (la == NULL || (lp->lp_state & LACP_STATE_DISTRIBUTING) == 0) { 682 return; 683 } 684 685 KASSERT(!TAILQ_EMPTY(&la->la_ports), ("no aggregator ports")); 686 KASSERT(la->la_nports > 0, ("nports invalid (%d)", la->la_nports)); 687 KASSERT(la->la_refcnt >= la->la_nports, ("aggregator refcnt invalid")); 688 689 LACP_DPRINTF((lp, "disable distributing on aggregator %s, " 690 "nports %d -> %d\n", 691 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 692 la->la_nports, la->la_nports - 1)); 693 694 TAILQ_REMOVE(&la->la_ports, lp, lp_dist_q); 695 la->la_nports--; 696 sc->sc_active = la->la_nports; 697 698 if (lsc->lsc_active_aggregator == la) { 699 lacp_suppress_distributing(lsc, la); 700 lacp_select_active_aggregator(lsc); 701 /* regenerate the port map, the active aggregator has changed */ 702 lacp_update_portmap(lsc); 703 } 704 705 lp->lp_state &= ~LACP_STATE_DISTRIBUTING; 706} 707 708static void 709lacp_enable_distributing(struct lacp_port *lp) 710{ 711 struct lacp_aggregator *la = lp->lp_aggregator; 712 struct lacp_softc *lsc = lp->lp_lsc; 713 struct lagg_softc *sc = lsc->lsc_softc; 714 char buf[LACP_LAGIDSTR_MAX+1]; 715 716 LACP_LOCK_ASSERT(lsc); 717 718 if ((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0) { 719 return; 720 } 721 722 LACP_DPRINTF((lp, "enable distributing on aggregator %s, " 723 "nports %d -> %d\n", 724 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 725 la->la_nports, la->la_nports + 1)); 726 727 KASSERT(la->la_refcnt > la->la_nports, ("aggregator refcnt invalid")); 728 TAILQ_INSERT_HEAD(&la->la_ports, lp, lp_dist_q); 729 la->la_nports++; 730 sc->sc_active = la->la_nports; 731 732 lp->lp_state |= LACP_STATE_DISTRIBUTING; 733 734 if (lsc->lsc_active_aggregator == la) { 735 lacp_suppress_distributing(lsc, la); 736 lacp_update_portmap(lsc); 737 } else 738 /* try to become the active aggregator */ 739 lacp_select_active_aggregator(lsc); 740} 741 742static void 743lacp_transit_expire(void *vp) 744{ 745 struct lacp_softc *lsc = vp; 746 747 LACP_LOCK_ASSERT(lsc); 748 749 CURVNET_SET(lsc->lsc_softc->sc_ifp->if_vnet); 750 LACP_TRACE(NULL); 751 CURVNET_RESTORE(); 752 753 lsc->lsc_suppress_distributing = FALSE; 754} 755 756void 757lacp_attach(struct lagg_softc *sc) 758{ 759 struct lacp_softc *lsc; 760 761 lsc = malloc(sizeof(struct lacp_softc), M_DEVBUF, M_WAITOK | M_ZERO); 762 763 sc->sc_psc = (caddr_t)lsc; 764 lsc->lsc_softc = sc; 765 766 lsc->lsc_hashkey = arc4random(); 767 lsc->lsc_active_aggregator = NULL; 768 lsc->lsc_strict_mode = 1; 769 LACP_LOCK_INIT(lsc); 770 TAILQ_INIT(&lsc->lsc_aggregators); 771 LIST_INIT(&lsc->lsc_ports); 772 773 callout_init_mtx(&lsc->lsc_transit_callout, &lsc->lsc_mtx, 0); 774 callout_init_mtx(&lsc->lsc_callout, &lsc->lsc_mtx, 0); 775 776 /* if the lagg is already up then do the same */ 777 if (sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING) 778 lacp_init(sc); 779} 780 781int 782lacp_detach(void *psc) 783{ 784 struct lacp_softc *lsc = (struct lacp_softc *)psc; 785 786 KASSERT(TAILQ_EMPTY(&lsc->lsc_aggregators), 787 ("aggregators still active")); 788 KASSERT(lsc->lsc_active_aggregator == NULL, 789 ("aggregator still attached")); 790 791 callout_drain(&lsc->lsc_transit_callout); 792 callout_drain(&lsc->lsc_callout); 793 794 LACP_LOCK_DESTROY(lsc); 795 free(lsc, M_DEVBUF); 796 return (0); 797} 798 799void 800lacp_init(struct lagg_softc *sc) 801{ 802 struct lacp_softc *lsc = LACP_SOFTC(sc); 803 804 LACP_LOCK(lsc); 805 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc); 806 LACP_UNLOCK(lsc); 807} 808 809void 810lacp_stop(struct lagg_softc *sc) 811{ 812 struct lacp_softc *lsc = LACP_SOFTC(sc); 813 814 LACP_LOCK(lsc); 815 callout_stop(&lsc->lsc_transit_callout); 816 callout_stop(&lsc->lsc_callout); 817 LACP_UNLOCK(lsc); 818} 819 820struct lagg_port * 821lacp_select_tx_port(struct lagg_softc *sc, struct mbuf *m) 822{ 823 struct lacp_softc *lsc = LACP_SOFTC(sc); 824 struct lacp_portmap *pm; 825 struct lacp_port *lp; 826 uint32_t hash; 827 828 if (__predict_false(lsc->lsc_suppress_distributing)) { 829 LACP_DPRINTF((NULL, "%s: waiting transit\n", __func__)); 830 return (NULL); 831 } 832 833 pm = &lsc->lsc_pmap[lsc->lsc_activemap]; 834 if (pm->pm_count == 0) { 835 LACP_DPRINTF((NULL, "%s: no active aggregator\n", __func__)); 836 return (NULL); 837 } 838 839 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) && 840 M_HASHTYPE_GET(m) != M_HASHTYPE_NONE) 841 hash = m->m_pkthdr.flowid >> sc->flowid_shift; 842 else 843 hash = lagg_hashmbuf(sc, m, lsc->lsc_hashkey); 844 hash %= pm->pm_count; 845 lp = pm->pm_map[hash]; 846 847 KASSERT((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0, 848 ("aggregated port is not distributing")); 849 850 return (lp->lp_lagg); 851} 852/* 853 * lacp_suppress_distributing: drop transmit packets for a while 854 * to preserve packet ordering. 855 */ 856 857static void 858lacp_suppress_distributing(struct lacp_softc *lsc, struct lacp_aggregator *la) 859{ 860 struct lacp_port *lp; 861 862 if (lsc->lsc_active_aggregator != la) { 863 return; 864 } 865 866 LACP_TRACE(NULL); 867 868 lsc->lsc_suppress_distributing = TRUE; 869 870 /* send a marker frame down each port to verify the queues are empty */ 871 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { 872 lp->lp_flags |= LACP_PORT_MARK; 873 lacp_xmit_marker(lp); 874 } 875 876 /* set a timeout for the marker frames */ 877 callout_reset(&lsc->lsc_transit_callout, 878 LACP_TRANSIT_DELAY * hz / 1000, lacp_transit_expire, lsc); 879} 880 881static int 882lacp_compare_peerinfo(const struct lacp_peerinfo *a, 883 const struct lacp_peerinfo *b) 884{ 885 return (memcmp(a, b, offsetof(struct lacp_peerinfo, lip_state))); 886} 887 888static int 889lacp_compare_systemid(const struct lacp_systemid *a, 890 const struct lacp_systemid *b) 891{ 892 return (memcmp(a, b, sizeof(*a))); 893} 894 895#if 0 /* unused */ 896static int 897lacp_compare_portid(const struct lacp_portid *a, 898 const struct lacp_portid *b) 899{ 900 return (memcmp(a, b, sizeof(*a))); 901} 902#endif 903 904static uint64_t 905lacp_aggregator_bandwidth(struct lacp_aggregator *la) 906{ 907 struct lacp_port *lp; 908 uint64_t speed; 909 910 lp = TAILQ_FIRST(&la->la_ports); 911 if (lp == NULL) { 912 return (0); 913 } 914 915 speed = ifmedia_baudrate(lp->lp_media); 916 speed *= la->la_nports; 917 if (speed == 0) { 918 LACP_DPRINTF((lp, "speed 0? media=0x%x nports=%d\n", 919 lp->lp_media, la->la_nports)); 920 } 921 922 return (speed); 923} 924 925/* 926 * lacp_select_active_aggregator: select an aggregator to be used to transmit 927 * packets from lagg(4) interface. 928 */ 929 930static void 931lacp_select_active_aggregator(struct lacp_softc *lsc) 932{ 933 struct lacp_aggregator *la; 934 struct lacp_aggregator *best_la = NULL; 935 uint64_t best_speed = 0; 936 char buf[LACP_LAGIDSTR_MAX+1]; 937 938 LACP_TRACE(NULL); 939 940 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 941 uint64_t speed; 942 943 if (la->la_nports == 0) { 944 continue; 945 } 946 947 speed = lacp_aggregator_bandwidth(la); 948 LACP_DPRINTF((NULL, "%s, speed=%jd, nports=%d\n", 949 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 950 speed, la->la_nports)); 951 952 /* This aggregator is chosen if 953 * the partner has a better system priority 954 * or, the total aggregated speed is higher 955 * or, it is already the chosen aggregator 956 */ 957 if ((best_la != NULL && LACP_SYS_PRI(la->la_partner) < 958 LACP_SYS_PRI(best_la->la_partner)) || 959 speed > best_speed || 960 (speed == best_speed && 961 la == lsc->lsc_active_aggregator)) { 962 best_la = la; 963 best_speed = speed; 964 } 965 } 966 967 KASSERT(best_la == NULL || best_la->la_nports > 0, 968 ("invalid aggregator refcnt")); 969 KASSERT(best_la == NULL || !TAILQ_EMPTY(&best_la->la_ports), 970 ("invalid aggregator list")); 971 972 if (lsc->lsc_active_aggregator != best_la) { 973 LACP_DPRINTF((NULL, "active aggregator changed\n")); 974 LACP_DPRINTF((NULL, "old %s\n", 975 lacp_format_lagid_aggregator(lsc->lsc_active_aggregator, 976 buf, sizeof(buf)))); 977 } else { 978 LACP_DPRINTF((NULL, "active aggregator not changed\n")); 979 } 980 LACP_DPRINTF((NULL, "new %s\n", 981 lacp_format_lagid_aggregator(best_la, buf, sizeof(buf)))); 982 983 if (lsc->lsc_active_aggregator != best_la) { 984 lsc->lsc_active_aggregator = best_la; 985 lacp_update_portmap(lsc); 986 if (best_la) { 987 lacp_suppress_distributing(lsc, best_la); 988 } 989 } 990} 991 992/* 993 * Updated the inactive portmap array with the new list of ports and 994 * make it live. 995 */ 996static void 997lacp_update_portmap(struct lacp_softc *lsc) 998{ 999 struct lagg_softc *sc = lsc->lsc_softc; 1000 struct lacp_aggregator *la; 1001 struct lacp_portmap *p; 1002 struct lacp_port *lp; 1003 uint64_t speed; 1004 u_int newmap; 1005 int i; 1006 1007 newmap = lsc->lsc_activemap == 0 ? 1 : 0; 1008 p = &lsc->lsc_pmap[newmap]; 1009 la = lsc->lsc_active_aggregator; 1010 speed = 0; 1011 bzero(p, sizeof(struct lacp_portmap)); 1012 1013 if (la != NULL && la->la_nports > 0) { 1014 p->pm_count = la->la_nports; 1015 i = 0; 1016 TAILQ_FOREACH(lp, &la->la_ports, lp_dist_q) 1017 p->pm_map[i++] = lp; 1018 KASSERT(i == p->pm_count, ("Invalid port count")); 1019 speed = lacp_aggregator_bandwidth(la); 1020 } 1021 sc->sc_ifp->if_baudrate = speed; 1022 1023 /* switch the active portmap over */ 1024 atomic_store_rel_int(&lsc->lsc_activemap, newmap); 1025 LACP_DPRINTF((NULL, "Set table %d with %d ports\n", 1026 lsc->lsc_activemap, 1027 lsc->lsc_pmap[lsc->lsc_activemap].pm_count)); 1028} 1029 1030static uint16_t 1031lacp_compose_key(struct lacp_port *lp) 1032{ 1033 struct lagg_port *lgp = lp->lp_lagg; 1034 struct lagg_softc *sc = lgp->lp_softc; 1035 u_int media = lp->lp_media; 1036 uint16_t key; 1037 1038 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) { 1039 1040 /* 1041 * non-aggregatable links should have unique keys. 1042 * 1043 * XXX this isn't really unique as if_index is 16 bit. 1044 */ 1045 1046 /* bit 0..14: (some bits of) if_index of this port */ 1047 key = lp->lp_ifp->if_index; 1048 /* bit 15: 1 */ 1049 key |= 0x8000; 1050 } else { 1051 u_int subtype = IFM_SUBTYPE(media); 1052 1053 KASSERT(IFM_TYPE(media) == IFM_ETHER, ("invalid media type")); 1054 KASSERT((media & IFM_FDX) != 0, ("aggregating HDX interface")); 1055 1056 /* bit 0..4: IFM_SUBTYPE modulo speed */ 1057 switch (subtype) { 1058 case IFM_10_T: 1059 case IFM_10_2: 1060 case IFM_10_5: 1061 case IFM_10_STP: 1062 case IFM_10_FL: 1063 key = IFM_10_T; 1064 break; 1065 case IFM_100_TX: 1066 case IFM_100_FX: 1067 case IFM_100_T4: 1068 case IFM_100_VG: 1069 case IFM_100_T2: 1070 case IFM_100_T: 1071 key = IFM_100_TX; 1072 break; 1073 case IFM_1000_SX: 1074 case IFM_1000_LX: 1075 case IFM_1000_CX: 1076 case IFM_1000_T: 1077 case IFM_1000_KX: 1078 case IFM_1000_SGMII: 1079 case IFM_1000_CX_SGMII: 1080 key = IFM_1000_SX; 1081 break; 1082 case IFM_10G_LR: 1083 case IFM_10G_SR: 1084 case IFM_10G_CX4: 1085 case IFM_10G_TWINAX: 1086 case IFM_10G_TWINAX_LONG: 1087 case IFM_10G_LRM: 1088 case IFM_10G_T: 1089 case IFM_10G_KX4: 1090 case IFM_10G_KR: 1091 case IFM_10G_CR1: 1092 case IFM_10G_ER: 1093 case IFM_10G_SFI: 1094 key = IFM_10G_LR; 1095 break; 1096 case IFM_20G_KR2: 1097 key = IFM_20G_KR2; 1098 break; 1099 case IFM_2500_KX: 1100 case IFM_2500_T: 1101 key = IFM_2500_KX; 1102 break; 1103 case IFM_5000_T: 1104 key = IFM_5000_T; 1105 break; 1106 case IFM_50G_PCIE: 1107 case IFM_50G_CR2: 1108 case IFM_50G_KR2: 1109 key = IFM_50G_PCIE; 1110 break; 1111 case IFM_56G_R4: 1112 key = IFM_56G_R4; 1113 break; 1114 case IFM_25G_PCIE: 1115 case IFM_25G_CR: 1116 case IFM_25G_KR: 1117 case IFM_25G_SR: 1118 key = IFM_25G_PCIE; 1119 break; 1120 case IFM_40G_CR4: 1121 case IFM_40G_SR4: 1122 case IFM_40G_LR4: 1123 case IFM_40G_XLPPI: 1124 case IFM_40G_KR4: 1125 key = IFM_40G_CR4; 1126 break; 1127 case IFM_100G_CR4: 1128 case IFM_100G_SR4: 1129 case IFM_100G_KR4: 1130 case IFM_100G_LR4: 1131 key = IFM_100G_CR4; 1132 break; 1133 default: 1134 key = subtype; 1135 break; 1136 } 1137 /* bit 5..14: (some bits of) if_index of lagg device */ 1138 key |= 0x7fe0 & ((sc->sc_ifp->if_index) << 5); 1139 /* bit 15: 0 */ 1140 } 1141 return (htons(key)); 1142} 1143 1144static void 1145lacp_aggregator_addref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1146{ 1147 char buf[LACP_LAGIDSTR_MAX+1]; 1148 1149 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1150 __func__, 1151 lacp_format_lagid(&la->la_actor, &la->la_partner, 1152 buf, sizeof(buf)), 1153 la->la_refcnt, la->la_refcnt + 1)); 1154 1155 KASSERT(la->la_refcnt > 0, ("refcount <= 0")); 1156 la->la_refcnt++; 1157 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcount")); 1158} 1159 1160static void 1161lacp_aggregator_delref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1162{ 1163 char buf[LACP_LAGIDSTR_MAX+1]; 1164 1165 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1166 __func__, 1167 lacp_format_lagid(&la->la_actor, &la->la_partner, 1168 buf, sizeof(buf)), 1169 la->la_refcnt, la->la_refcnt - 1)); 1170 1171 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcnt")); 1172 la->la_refcnt--; 1173 if (la->la_refcnt > 0) { 1174 return; 1175 } 1176 1177 KASSERT(la->la_refcnt == 0, ("refcount not zero")); 1178 KASSERT(lsc->lsc_active_aggregator != la, ("aggregator active")); 1179 1180 TAILQ_REMOVE(&lsc->lsc_aggregators, la, la_q); 1181 1182 free(la, M_DEVBUF); 1183} 1184 1185/* 1186 * lacp_aggregator_get: allocate an aggregator. 1187 */ 1188 1189static struct lacp_aggregator * 1190lacp_aggregator_get(struct lacp_softc *lsc, struct lacp_port *lp) 1191{ 1192 struct lacp_aggregator *la; 1193 1194 la = malloc(sizeof(*la), M_DEVBUF, M_NOWAIT); 1195 if (la) { 1196 la->la_refcnt = 1; 1197 la->la_nports = 0; 1198 TAILQ_INIT(&la->la_ports); 1199 la->la_pending = 0; 1200 TAILQ_INSERT_TAIL(&lsc->lsc_aggregators, la, la_q); 1201 } 1202 1203 return (la); 1204} 1205 1206/* 1207 * lacp_fill_aggregator_id: setup a newly allocated aggregator from a port. 1208 */ 1209 1210static void 1211lacp_fill_aggregator_id(struct lacp_aggregator *la, const struct lacp_port *lp) 1212{ 1213 lacp_fill_aggregator_id_peer(&la->la_partner, &lp->lp_partner); 1214 lacp_fill_aggregator_id_peer(&la->la_actor, &lp->lp_actor); 1215 1216 la->la_actor.lip_state = lp->lp_state & LACP_STATE_AGGREGATION; 1217} 1218 1219static void 1220lacp_fill_aggregator_id_peer(struct lacp_peerinfo *lpi_aggr, 1221 const struct lacp_peerinfo *lpi_port) 1222{ 1223 memset(lpi_aggr, 0, sizeof(*lpi_aggr)); 1224 lpi_aggr->lip_systemid = lpi_port->lip_systemid; 1225 lpi_aggr->lip_key = lpi_port->lip_key; 1226} 1227 1228/* 1229 * lacp_aggregator_is_compatible: check if a port can join to an aggregator. 1230 */ 1231 1232static int 1233lacp_aggregator_is_compatible(const struct lacp_aggregator *la, 1234 const struct lacp_port *lp) 1235{ 1236 if (!(lp->lp_state & LACP_STATE_AGGREGATION) || 1237 !(lp->lp_partner.lip_state & LACP_STATE_AGGREGATION)) { 1238 return (0); 1239 } 1240 1241 if (!(la->la_actor.lip_state & LACP_STATE_AGGREGATION)) { 1242 return (0); 1243 } 1244 1245 if (!lacp_peerinfo_is_compatible(&la->la_partner, &lp->lp_partner)) { 1246 return (0); 1247 } 1248 1249 if (!lacp_peerinfo_is_compatible(&la->la_actor, &lp->lp_actor)) { 1250 return (0); 1251 } 1252 1253 return (1); 1254} 1255 1256static int 1257lacp_peerinfo_is_compatible(const struct lacp_peerinfo *a, 1258 const struct lacp_peerinfo *b) 1259{ 1260 if (memcmp(&a->lip_systemid, &b->lip_systemid, 1261 sizeof(a->lip_systemid))) { 1262 return (0); 1263 } 1264 1265 if (memcmp(&a->lip_key, &b->lip_key, sizeof(a->lip_key))) { 1266 return (0); 1267 } 1268 1269 return (1); 1270} 1271 1272static void 1273lacp_port_enable(struct lacp_port *lp) 1274{ 1275 lp->lp_state |= LACP_STATE_AGGREGATION; 1276} 1277 1278static void 1279lacp_port_disable(struct lacp_port *lp) 1280{ 1281 lacp_set_mux(lp, LACP_MUX_DETACHED); 1282 1283 lp->lp_state &= ~LACP_STATE_AGGREGATION; 1284 lp->lp_selected = LACP_UNSELECTED; 1285 lacp_sm_rx_record_default(lp); 1286 lp->lp_partner.lip_state &= ~LACP_STATE_AGGREGATION; 1287 lp->lp_state &= ~LACP_STATE_EXPIRED; 1288} 1289 1290/* 1291 * lacp_select: select an aggregator. create one if necessary. 1292 */ 1293static void 1294lacp_select(struct lacp_port *lp) 1295{ 1296 struct lacp_softc *lsc = lp->lp_lsc; 1297 struct lacp_aggregator *la; 1298 char buf[LACP_LAGIDSTR_MAX+1]; 1299 1300 if (lp->lp_aggregator) { 1301 return; 1302 } 1303 1304 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1305 ("timer_wait_while still active")); 1306 1307 LACP_DPRINTF((lp, "port lagid=%s\n", 1308 lacp_format_lagid(&lp->lp_actor, &lp->lp_partner, 1309 buf, sizeof(buf)))); 1310 1311 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 1312 if (lacp_aggregator_is_compatible(la, lp)) { 1313 break; 1314 } 1315 } 1316 1317 if (la == NULL) { 1318 la = lacp_aggregator_get(lsc, lp); 1319 if (la == NULL) { 1320 LACP_DPRINTF((lp, "aggregator creation failed\n")); 1321 1322 /* 1323 * will retry on the next tick. 1324 */ 1325 1326 return; 1327 } 1328 lacp_fill_aggregator_id(la, lp); 1329 LACP_DPRINTF((lp, "aggregator created\n")); 1330 } else { 1331 LACP_DPRINTF((lp, "compatible aggregator found\n")); 1332 if (la->la_refcnt == LACP_MAX_PORTS) 1333 return; 1334 lacp_aggregator_addref(lsc, la); 1335 } 1336 1337 LACP_DPRINTF((lp, "aggregator lagid=%s\n", 1338 lacp_format_lagid(&la->la_actor, &la->la_partner, 1339 buf, sizeof(buf)))); 1340 1341 lp->lp_aggregator = la; 1342 lp->lp_selected = LACP_SELECTED; 1343} 1344 1345/* 1346 * lacp_unselect: finish unselect/detach process. 1347 */ 1348 1349static void 1350lacp_unselect(struct lacp_port *lp) 1351{ 1352 struct lacp_softc *lsc = lp->lp_lsc; 1353 struct lacp_aggregator *la = lp->lp_aggregator; 1354 1355 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1356 ("timer_wait_while still active")); 1357 1358 if (la == NULL) { 1359 return; 1360 } 1361 1362 lp->lp_aggregator = NULL; 1363 lacp_aggregator_delref(lsc, la); 1364} 1365 1366/* mux machine */ 1367 1368static void 1369lacp_sm_mux(struct lacp_port *lp) 1370{ 1371 struct lagg_port *lgp = lp->lp_lagg; 1372 struct lagg_softc *sc = lgp->lp_softc; 1373 enum lacp_mux_state new_state; 1374 boolean_t p_sync = 1375 (lp->lp_partner.lip_state & LACP_STATE_SYNC) != 0; 1376 boolean_t p_collecting = 1377 (lp->lp_partner.lip_state & LACP_STATE_COLLECTING) != 0; 1378 enum lacp_selected selected = lp->lp_selected; 1379 struct lacp_aggregator *la; 1380 1381 if (V_lacp_debug > 1) 1382 lacp_dprintf(lp, "%s: state= 0x%x, selected= 0x%x, " 1383 "p_sync= 0x%x, p_collecting= 0x%x\n", __func__, 1384 lp->lp_mux_state, selected, p_sync, p_collecting); 1385 1386re_eval: 1387 la = lp->lp_aggregator; 1388 KASSERT(lp->lp_mux_state == LACP_MUX_DETACHED || la != NULL, 1389 ("MUX not detached")); 1390 new_state = lp->lp_mux_state; 1391 switch (lp->lp_mux_state) { 1392 case LACP_MUX_DETACHED: 1393 if (selected != LACP_UNSELECTED) { 1394 new_state = LACP_MUX_WAITING; 1395 } 1396 break; 1397 case LACP_MUX_WAITING: 1398 KASSERT(la->la_pending > 0 || 1399 !LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1400 ("timer_wait_while still active")); 1401 if (selected == LACP_SELECTED && la->la_pending == 0) { 1402 new_state = LACP_MUX_ATTACHED; 1403 } else if (selected == LACP_UNSELECTED) { 1404 new_state = LACP_MUX_DETACHED; 1405 } 1406 break; 1407 case LACP_MUX_ATTACHED: 1408 if (selected == LACP_SELECTED && p_sync) { 1409 new_state = LACP_MUX_COLLECTING; 1410 } else if (selected != LACP_SELECTED) { 1411 new_state = LACP_MUX_DETACHED; 1412 } 1413 break; 1414 case LACP_MUX_COLLECTING: 1415 if (selected == LACP_SELECTED && p_sync && p_collecting) { 1416 new_state = LACP_MUX_DISTRIBUTING; 1417 } else if (selected != LACP_SELECTED || !p_sync) { 1418 new_state = LACP_MUX_ATTACHED; 1419 } 1420 break; 1421 case LACP_MUX_DISTRIBUTING: 1422 if (selected != LACP_SELECTED || !p_sync || !p_collecting) { 1423 new_state = LACP_MUX_COLLECTING; 1424 lacp_dprintf(lp, "Interface stopped DISTRIBUTING, possible flapping\n"); 1425 sc->sc_flapping++; 1426 } 1427 break; 1428 default: 1429 panic("%s: unknown state", __func__); 1430 } 1431 1432 if (lp->lp_mux_state == new_state) { 1433 return; 1434 } 1435 1436 lacp_set_mux(lp, new_state); 1437 goto re_eval; 1438} 1439 1440static void 1441lacp_set_mux(struct lacp_port *lp, enum lacp_mux_state new_state) 1442{ 1443 struct lacp_aggregator *la = lp->lp_aggregator; 1444 1445 if (lp->lp_mux_state == new_state) { 1446 return; 1447 } 1448 1449 switch (new_state) { 1450 case LACP_MUX_DETACHED: 1451 lp->lp_state &= ~LACP_STATE_SYNC; 1452 lacp_disable_distributing(lp); 1453 lacp_disable_collecting(lp); 1454 lacp_sm_assert_ntt(lp); 1455 /* cancel timer */ 1456 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE)) { 1457 KASSERT(la->la_pending > 0, 1458 ("timer_wait_while not active")); 1459 la->la_pending--; 1460 } 1461 LACP_TIMER_DISARM(lp, LACP_TIMER_WAIT_WHILE); 1462 lacp_unselect(lp); 1463 break; 1464 case LACP_MUX_WAITING: 1465 LACP_TIMER_ARM(lp, LACP_TIMER_WAIT_WHILE, 1466 LACP_AGGREGATE_WAIT_TIME); 1467 la->la_pending++; 1468 break; 1469 case LACP_MUX_ATTACHED: 1470 lp->lp_state |= LACP_STATE_SYNC; 1471 lacp_disable_collecting(lp); 1472 lacp_sm_assert_ntt(lp); 1473 break; 1474 case LACP_MUX_COLLECTING: 1475 lacp_enable_collecting(lp); 1476 lacp_disable_distributing(lp); 1477 lacp_sm_assert_ntt(lp); 1478 break; 1479 case LACP_MUX_DISTRIBUTING: 1480 lacp_enable_distributing(lp); 1481 break; 1482 default: 1483 panic("%s: unknown state", __func__); 1484 } 1485 1486 LACP_DPRINTF((lp, "mux_state %d -> %d\n", lp->lp_mux_state, new_state)); 1487 1488 lp->lp_mux_state = new_state; 1489} 1490 1491static void 1492lacp_sm_mux_timer(struct lacp_port *lp) 1493{ 1494 struct lacp_aggregator *la = lp->lp_aggregator; 1495 char buf[LACP_LAGIDSTR_MAX+1]; 1496 1497 KASSERT(la->la_pending > 0, ("no pending event")); 1498 1499 LACP_DPRINTF((lp, "%s: aggregator %s, pending %d -> %d\n", __func__, 1500 lacp_format_lagid(&la->la_actor, &la->la_partner, 1501 buf, sizeof(buf)), 1502 la->la_pending, la->la_pending - 1)); 1503 1504 la->la_pending--; 1505} 1506 1507/* periodic transmit machine */ 1508 1509static void 1510lacp_sm_ptx_update_timeout(struct lacp_port *lp, uint8_t oldpstate) 1511{ 1512 if (LACP_STATE_EQ(oldpstate, lp->lp_partner.lip_state, 1513 LACP_STATE_TIMEOUT)) { 1514 return; 1515 } 1516 1517 LACP_DPRINTF((lp, "partner timeout changed\n")); 1518 1519 /* 1520 * FAST_PERIODIC -> SLOW_PERIODIC 1521 * or 1522 * SLOW_PERIODIC (-> PERIODIC_TX) -> FAST_PERIODIC 1523 * 1524 * let lacp_sm_ptx_tx_schedule to update timeout. 1525 */ 1526 1527 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1528 1529 /* 1530 * if timeout has been shortened, assert NTT. 1531 */ 1532 1533 if ((lp->lp_partner.lip_state & LACP_STATE_TIMEOUT)) { 1534 lacp_sm_assert_ntt(lp); 1535 } 1536} 1537 1538static void 1539lacp_sm_ptx_tx_schedule(struct lacp_port *lp) 1540{ 1541 int timeout; 1542 1543 if (!(lp->lp_state & LACP_STATE_ACTIVITY) && 1544 !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) { 1545 1546 /* 1547 * NO_PERIODIC 1548 */ 1549 1550 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1551 return; 1552 } 1553 1554 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_PERIODIC)) { 1555 return; 1556 } 1557 1558 timeout = (lp->lp_partner.lip_state & LACP_STATE_TIMEOUT) ? 1559 LACP_FAST_PERIODIC_TIME : LACP_SLOW_PERIODIC_TIME; 1560 1561 LACP_TIMER_ARM(lp, LACP_TIMER_PERIODIC, timeout); 1562} 1563 1564static void 1565lacp_sm_ptx_timer(struct lacp_port *lp) 1566{ 1567 lacp_sm_assert_ntt(lp); 1568} 1569 1570static void 1571lacp_sm_rx(struct lacp_port *lp, const struct lacpdu *du) 1572{ 1573 int timeout; 1574 1575 /* 1576 * check LACP_DISABLED first 1577 */ 1578 1579 if (!(lp->lp_state & LACP_STATE_AGGREGATION)) { 1580 return; 1581 } 1582 1583 /* 1584 * check loopback condition. 1585 */ 1586 1587 if (!lacp_compare_systemid(&du->ldu_actor.lip_systemid, 1588 &lp->lp_actor.lip_systemid)) { 1589 return; 1590 } 1591 1592 /* 1593 * EXPIRED, DEFAULTED, CURRENT -> CURRENT 1594 */ 1595 1596 lacp_sm_rx_update_selected(lp, du); 1597 lacp_sm_rx_update_ntt(lp, du); 1598 lacp_sm_rx_record_pdu(lp, du); 1599 1600 timeout = (lp->lp_state & LACP_STATE_TIMEOUT) ? 1601 LACP_SHORT_TIMEOUT_TIME : LACP_LONG_TIMEOUT_TIME; 1602 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, timeout); 1603 1604 lp->lp_state &= ~LACP_STATE_EXPIRED; 1605 1606 /* 1607 * kick transmit machine without waiting the next tick. 1608 */ 1609 1610 lacp_sm_tx(lp); 1611} 1612 1613static void 1614lacp_sm_rx_set_expired(struct lacp_port *lp) 1615{ 1616 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1617 lp->lp_partner.lip_state |= LACP_STATE_TIMEOUT; 1618 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, LACP_SHORT_TIMEOUT_TIME); 1619 lp->lp_state |= LACP_STATE_EXPIRED; 1620} 1621 1622static void 1623lacp_sm_rx_timer(struct lacp_port *lp) 1624{ 1625 if ((lp->lp_state & LACP_STATE_EXPIRED) == 0) { 1626 /* CURRENT -> EXPIRED */ 1627 LACP_DPRINTF((lp, "%s: CURRENT -> EXPIRED\n", __func__)); 1628 lacp_sm_rx_set_expired(lp); 1629 } else { 1630 /* EXPIRED -> DEFAULTED */ 1631 LACP_DPRINTF((lp, "%s: EXPIRED -> DEFAULTED\n", __func__)); 1632 lacp_sm_rx_update_default_selected(lp); 1633 lacp_sm_rx_record_default(lp); 1634 lp->lp_state &= ~LACP_STATE_EXPIRED; 1635 } 1636} 1637 1638static void 1639lacp_sm_rx_record_pdu(struct lacp_port *lp, const struct lacpdu *du) 1640{ 1641 boolean_t active; 1642 uint8_t oldpstate; 1643 char buf[LACP_STATESTR_MAX+1]; 1644 1645 LACP_TRACE(lp); 1646 1647 oldpstate = lp->lp_partner.lip_state; 1648 1649 active = (du->ldu_actor.lip_state & LACP_STATE_ACTIVITY) 1650 || ((lp->lp_state & LACP_STATE_ACTIVITY) && 1651 (du->ldu_partner.lip_state & LACP_STATE_ACTIVITY)); 1652 1653 lp->lp_partner = du->ldu_actor; 1654 if (active && 1655 ((LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1656 LACP_STATE_AGGREGATION) && 1657 !lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner)) 1658 || (du->ldu_partner.lip_state & LACP_STATE_AGGREGATION) == 0)) { 1659 /* XXX nothing? */ 1660 } else { 1661 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1662 } 1663 1664 lp->lp_state &= ~LACP_STATE_DEFAULTED; 1665 1666 if (oldpstate != lp->lp_partner.lip_state) { 1667 LACP_DPRINTF((lp, "old pstate %s\n", 1668 lacp_format_state(oldpstate, buf, sizeof(buf)))); 1669 LACP_DPRINTF((lp, "new pstate %s\n", 1670 lacp_format_state(lp->lp_partner.lip_state, buf, 1671 sizeof(buf)))); 1672 } 1673 1674 /* XXX Hack, still need to implement 5.4.9 para 2,3,4 */ 1675 if (lp->lp_lsc->lsc_strict_mode) 1676 lp->lp_partner.lip_state |= LACP_STATE_SYNC; 1677 1678 lacp_sm_ptx_update_timeout(lp, oldpstate); 1679} 1680 1681static void 1682lacp_sm_rx_update_ntt(struct lacp_port *lp, const struct lacpdu *du) 1683{ 1684 1685 LACP_TRACE(lp); 1686 1687 if (lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner) || 1688 !LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1689 LACP_STATE_ACTIVITY | LACP_STATE_SYNC | LACP_STATE_AGGREGATION)) { 1690 LACP_DPRINTF((lp, "%s: assert ntt\n", __func__)); 1691 lacp_sm_assert_ntt(lp); 1692 } 1693} 1694 1695static void 1696lacp_sm_rx_record_default(struct lacp_port *lp) 1697{ 1698 uint8_t oldpstate; 1699 1700 LACP_TRACE(lp); 1701 1702 oldpstate = lp->lp_partner.lip_state; 1703 if (lp->lp_lsc->lsc_strict_mode) 1704 lp->lp_partner = lacp_partner_admin_strict; 1705 else 1706 lp->lp_partner = lacp_partner_admin_optimistic;; 1707 lp->lp_state |= LACP_STATE_DEFAULTED; 1708 lacp_sm_ptx_update_timeout(lp, oldpstate); 1709} 1710 1711static void 1712lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *lp, 1713 const struct lacp_peerinfo *info) 1714{ 1715 1716 LACP_TRACE(lp); 1717 1718 if (lacp_compare_peerinfo(&lp->lp_partner, info) || 1719 !LACP_STATE_EQ(lp->lp_partner.lip_state, info->lip_state, 1720 LACP_STATE_AGGREGATION)) { 1721 lp->lp_selected = LACP_UNSELECTED; 1722 /* mux machine will clean up lp->lp_aggregator */ 1723 } 1724} 1725 1726static void 1727lacp_sm_rx_update_selected(struct lacp_port *lp, const struct lacpdu *du) 1728{ 1729 1730 LACP_TRACE(lp); 1731 1732 lacp_sm_rx_update_selected_from_peerinfo(lp, &du->ldu_actor); 1733} 1734 1735static void 1736lacp_sm_rx_update_default_selected(struct lacp_port *lp) 1737{ 1738 1739 LACP_TRACE(lp); 1740 1741 if (lp->lp_lsc->lsc_strict_mode) 1742 lacp_sm_rx_update_selected_from_peerinfo(lp, 1743 &lacp_partner_admin_strict); 1744 else 1745 lacp_sm_rx_update_selected_from_peerinfo(lp, 1746 &lacp_partner_admin_optimistic); 1747} 1748 1749/* transmit machine */ 1750 1751static void 1752lacp_sm_tx(struct lacp_port *lp) 1753{ 1754 int error = 0; 1755 1756 if (!(lp->lp_state & LACP_STATE_AGGREGATION) 1757#if 1 1758 || (!(lp->lp_state & LACP_STATE_ACTIVITY) 1759 && !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) 1760#endif 1761 ) { 1762 lp->lp_flags &= ~LACP_PORT_NTT; 1763 } 1764 1765 if (!(lp->lp_flags & LACP_PORT_NTT)) { 1766 return; 1767 } 1768 1769 /* Rate limit to 3 PDUs per LACP_FAST_PERIODIC_TIME */ 1770 if (ppsratecheck(&lp->lp_last_lacpdu, &lp->lp_lacpdu_sent, 1771 (3 / LACP_FAST_PERIODIC_TIME)) == 0) { 1772 LACP_DPRINTF((lp, "rate limited pdu\n")); 1773 return; 1774 } 1775 1776 if (((1 << lp->lp_ifp->if_dunit) & lp->lp_lsc->lsc_debug.lsc_tx_test) == 0) { 1777 error = lacp_xmit_lacpdu(lp); 1778 } else { 1779 LACP_TPRINTF((lp, "Dropping TX PDU\n")); 1780 } 1781 1782 if (error == 0) { 1783 lp->lp_flags &= ~LACP_PORT_NTT; 1784 } else { 1785 LACP_DPRINTF((lp, "lacpdu transmit failure, error %d\n", 1786 error)); 1787 } 1788} 1789 1790static void 1791lacp_sm_assert_ntt(struct lacp_port *lp) 1792{ 1793 1794 lp->lp_flags |= LACP_PORT_NTT; 1795} 1796 1797static void 1798lacp_run_timers(struct lacp_port *lp) 1799{ 1800 int i; 1801 1802 for (i = 0; i < LACP_NTIMER; i++) { 1803 KASSERT(lp->lp_timer[i] >= 0, 1804 ("invalid timer value %d", lp->lp_timer[i])); 1805 if (lp->lp_timer[i] == 0) { 1806 continue; 1807 } else if (--lp->lp_timer[i] <= 0) { 1808 if (lacp_timer_funcs[i]) { 1809 (*lacp_timer_funcs[i])(lp); 1810 } 1811 } 1812 } 1813} 1814 1815int 1816lacp_marker_input(struct lacp_port *lp, struct mbuf *m) 1817{ 1818 struct lacp_softc *lsc = lp->lp_lsc; 1819 struct lagg_port *lgp = lp->lp_lagg; 1820 struct lacp_port *lp2; 1821 struct markerdu *mdu; 1822 int error = 0; 1823 int pending = 0; 1824 1825 if (m->m_pkthdr.len != sizeof(*mdu)) { 1826 goto bad; 1827 } 1828 1829 if ((m->m_flags & M_MCAST) == 0) { 1830 goto bad; 1831 } 1832 1833 if (m->m_len < sizeof(*mdu)) { 1834 m = m_pullup(m, sizeof(*mdu)); 1835 if (m == NULL) { 1836 return (ENOMEM); 1837 } 1838 } 1839 1840 mdu = mtod(m, struct markerdu *); 1841 1842 if (memcmp(&mdu->mdu_eh.ether_dhost, 1843 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 1844 goto bad; 1845 } 1846 1847 if (mdu->mdu_sph.sph_version != 1) { 1848 goto bad; 1849 } 1850 1851 switch (mdu->mdu_tlv.tlv_type) { 1852 case MARKER_TYPE_INFO: 1853 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 1854 marker_info_tlv_template, TRUE)) { 1855 goto bad; 1856 } 1857 mdu->mdu_tlv.tlv_type = MARKER_TYPE_RESPONSE; 1858 memcpy(&mdu->mdu_eh.ether_dhost, 1859 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN); 1860 memcpy(&mdu->mdu_eh.ether_shost, 1861 lgp->lp_lladdr, ETHER_ADDR_LEN); 1862 error = lagg_enqueue(lp->lp_ifp, m); 1863 break; 1864 1865 case MARKER_TYPE_RESPONSE: 1866 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 1867 marker_response_tlv_template, TRUE)) { 1868 goto bad; 1869 } 1870 LACP_DPRINTF((lp, "marker response, port=%u, sys=%6D, id=%u\n", 1871 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, 1872 ":", ntohl(mdu->mdu_info.mi_rq_xid))); 1873 1874 /* Verify that it is the last marker we sent out */ 1875 if (memcmp(&mdu->mdu_info, &lp->lp_marker, 1876 sizeof(struct lacp_markerinfo))) 1877 goto bad; 1878 1879 LACP_LOCK(lsc); 1880 lp->lp_flags &= ~LACP_PORT_MARK; 1881 1882 if (lsc->lsc_suppress_distributing) { 1883 /* Check if any ports are waiting for a response */ 1884 LIST_FOREACH(lp2, &lsc->lsc_ports, lp_next) { 1885 if (lp2->lp_flags & LACP_PORT_MARK) { 1886 pending = 1; 1887 break; 1888 } 1889 } 1890 1891 if (pending == 0) { 1892 /* All interface queues are clear */ 1893 LACP_DPRINTF((NULL, "queue flush complete\n")); 1894 lsc->lsc_suppress_distributing = FALSE; 1895 } 1896 } 1897 LACP_UNLOCK(lsc); 1898 m_freem(m); 1899 break; 1900 1901 default: 1902 goto bad; 1903 } 1904 1905 return (error); 1906 1907bad: 1908 LACP_DPRINTF((lp, "bad marker frame\n")); 1909 m_freem(m); 1910 return (EINVAL); 1911} 1912 1913static int 1914tlv_check(const void *p, size_t size, const struct tlvhdr *tlv, 1915 const struct tlv_template *tmpl, boolean_t check_type) 1916{ 1917 while (/* CONSTCOND */ 1) { 1918 if ((const char *)tlv - (const char *)p + sizeof(*tlv) > size) { 1919 return (EINVAL); 1920 } 1921 if ((check_type && tlv->tlv_type != tmpl->tmpl_type) || 1922 tlv->tlv_length != tmpl->tmpl_length) { 1923 return (EINVAL); 1924 } 1925 if (tmpl->tmpl_type == 0) { 1926 break; 1927 } 1928 tlv = (const struct tlvhdr *) 1929 ((const char *)tlv + tlv->tlv_length); 1930 tmpl++; 1931 } 1932 1933 return (0); 1934} 1935 1936/* Debugging */ 1937const char * 1938lacp_format_mac(const uint8_t *mac, char *buf, size_t buflen) 1939{ 1940 snprintf(buf, buflen, "%02X-%02X-%02X-%02X-%02X-%02X", 1941 (int)mac[0], 1942 (int)mac[1], 1943 (int)mac[2], 1944 (int)mac[3], 1945 (int)mac[4], 1946 (int)mac[5]); 1947 1948 return (buf); 1949} 1950 1951const char * 1952lacp_format_systemid(const struct lacp_systemid *sysid, 1953 char *buf, size_t buflen) 1954{ 1955 char macbuf[LACP_MACSTR_MAX+1]; 1956 1957 snprintf(buf, buflen, "%04X,%s", 1958 ntohs(sysid->lsi_prio), 1959 lacp_format_mac(sysid->lsi_mac, macbuf, sizeof(macbuf))); 1960 1961 return (buf); 1962} 1963 1964const char * 1965lacp_format_portid(const struct lacp_portid *portid, char *buf, size_t buflen) 1966{ 1967 snprintf(buf, buflen, "%04X,%04X", 1968 ntohs(portid->lpi_prio), 1969 ntohs(portid->lpi_portno)); 1970 1971 return (buf); 1972} 1973 1974const char * 1975lacp_format_partner(const struct lacp_peerinfo *peer, char *buf, size_t buflen) 1976{ 1977 char sysid[LACP_SYSTEMIDSTR_MAX+1]; 1978 char portid[LACP_PORTIDSTR_MAX+1]; 1979 1980 snprintf(buf, buflen, "(%s,%04X,%s)", 1981 lacp_format_systemid(&peer->lip_systemid, sysid, sizeof(sysid)), 1982 ntohs(peer->lip_key), 1983 lacp_format_portid(&peer->lip_portid, portid, sizeof(portid))); 1984 1985 return (buf); 1986} 1987 1988const char * 1989lacp_format_lagid(const struct lacp_peerinfo *a, 1990 const struct lacp_peerinfo *b, char *buf, size_t buflen) 1991{ 1992 char astr[LACP_PARTNERSTR_MAX+1]; 1993 char bstr[LACP_PARTNERSTR_MAX+1]; 1994 1995#if 0 1996 /* 1997 * there's a convention to display small numbered peer 1998 * in the left. 1999 */ 2000 2001 if (lacp_compare_peerinfo(a, b) > 0) { 2002 const struct lacp_peerinfo *t; 2003 2004 t = a; 2005 a = b; 2006 b = t; 2007 } 2008#endif 2009 2010 snprintf(buf, buflen, "[%s,%s]", 2011 lacp_format_partner(a, astr, sizeof(astr)), 2012 lacp_format_partner(b, bstr, sizeof(bstr))); 2013 2014 return (buf); 2015} 2016 2017const char * 2018lacp_format_lagid_aggregator(const struct lacp_aggregator *la, 2019 char *buf, size_t buflen) 2020{ 2021 if (la == NULL) { 2022 return ("(none)"); 2023 } 2024 2025 return (lacp_format_lagid(&la->la_actor, &la->la_partner, buf, buflen)); 2026} 2027 2028const char * 2029lacp_format_state(uint8_t state, char *buf, size_t buflen) 2030{ 2031 snprintf(buf, buflen, "%b", state, LACP_STATE_BITS); 2032 return (buf); 2033} 2034 2035static void 2036lacp_dump_lacpdu(const struct lacpdu *du) 2037{ 2038 char buf[LACP_PARTNERSTR_MAX+1]; 2039 char buf2[LACP_STATESTR_MAX+1]; 2040 2041 printf("actor=%s\n", 2042 lacp_format_partner(&du->ldu_actor, buf, sizeof(buf))); 2043 printf("actor.state=%s\n", 2044 lacp_format_state(du->ldu_actor.lip_state, buf2, sizeof(buf2))); 2045 printf("partner=%s\n", 2046 lacp_format_partner(&du->ldu_partner, buf, sizeof(buf))); 2047 printf("partner.state=%s\n", 2048 lacp_format_state(du->ldu_partner.lip_state, buf2, sizeof(buf2))); 2049 2050 printf("maxdelay=%d\n", ntohs(du->ldu_collector.lci_maxdelay)); 2051} 2052 2053static void 2054lacp_dprintf(const struct lacp_port *lp, const char *fmt, ...) 2055{ 2056 va_list va; 2057 2058 if (lp) { 2059 printf("%s: ", lp->lp_ifp->if_xname); 2060 } 2061 2062 va_start(va, fmt); 2063 vprintf(fmt, va); 2064 va_end(va); 2065} 2066