1/* $NetBSD: ieee8023ad_lacp.c,v 1.3 2005/12/11 12:24:54 christos Exp $ */ 2 3/*- 4 * SPDX-License-Identifier: BSD-2-Clause 5 * 6 * Copyright (c)2005 YAMAMOTO Takashi, 7 * Copyright (c)2008 Andrew Thompson <thompsa@FreeBSD.org> 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33#include "opt_kern_tls.h" 34#include "opt_ratelimit.h" 35 36#include <sys/param.h> 37#include <sys/callout.h> 38#include <sys/eventhandler.h> 39#include <sys/mbuf.h> 40#include <sys/systm.h> 41#include <sys/malloc.h> 42#include <sys/kernel.h> /* hz */ 43#include <sys/socket.h> /* for net/if.h */ 44#include <sys/sockio.h> 45#include <sys/sysctl.h> 46#include <machine/stdarg.h> 47#include <sys/lock.h> 48#include <sys/rwlock.h> 49#include <sys/taskqueue.h> 50#include <sys/time.h> 51 52#include <net/if.h> 53#include <net/if_var.h> 54#include <net/if_private.h> 55#include <net/if_dl.h> 56#include <net/ethernet.h> 57#include <net/infiniband.h> 58#include <net/if_media.h> 59#include <net/if_types.h> 60 61#include <net/if_lagg.h> 62#include <net/ieee8023ad_lacp.h> 63 64/* 65 * actor system priority and port priority. 66 * XXX should be configurable. 67 */ 68 69#define LACP_SYSTEM_PRIO 0x8000 70#define LACP_PORT_PRIO 0x8000 71 72const uint8_t ethermulticastaddr_slowprotocols[ETHER_ADDR_LEN] = 73 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x02 }; 74 75static const struct tlv_template lacp_info_tlv_template[] = { 76 { LACP_TYPE_ACTORINFO, 77 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) }, 78 { LACP_TYPE_PARTNERINFO, 79 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) }, 80 { LACP_TYPE_COLLECTORINFO, 81 sizeof(struct tlvhdr) + sizeof(struct lacp_collectorinfo) }, 82 { 0, 0 }, 83}; 84 85static const struct tlv_template marker_info_tlv_template[] = { 86 { MARKER_TYPE_INFO, 87 sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) }, 88 { 0, 0 }, 89}; 90 91static const struct tlv_template marker_response_tlv_template[] = { 92 { MARKER_TYPE_RESPONSE, 93 sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) }, 94 { 0, 0 }, 95}; 96 97typedef void (*lacp_timer_func_t)(struct lacp_port *); 98 99static void lacp_fill_actorinfo(struct lacp_port *, struct lacp_peerinfo *); 100static void lacp_fill_markerinfo(struct lacp_port *, 101 struct lacp_markerinfo *); 102 103static uint64_t lacp_aggregator_bandwidth(struct lacp_aggregator *); 104static void lacp_suppress_distributing(struct lacp_softc *, 105 struct lacp_aggregator *); 106static void lacp_transit_expire(void *); 107static void lacp_update_portmap(struct lacp_softc *); 108static void lacp_select_active_aggregator(struct lacp_softc *); 109static uint16_t lacp_compose_key(struct lacp_port *); 110static int tlv_check(const void *, size_t, const struct tlvhdr *, 111 const struct tlv_template *, boolean_t); 112static void lacp_tick(void *); 113 114static void lacp_fill_aggregator_id(struct lacp_aggregator *, 115 const struct lacp_port *); 116static void lacp_fill_aggregator_id_peer(struct lacp_peerinfo *, 117 const struct lacp_peerinfo *); 118static bool lacp_aggregator_is_compatible(const struct lacp_aggregator *, 119 const struct lacp_port *); 120static bool lacp_peerinfo_is_compatible(const struct lacp_peerinfo *, 121 const struct lacp_peerinfo *); 122 123static struct lacp_aggregator *lacp_aggregator_get(struct lacp_softc *, 124 struct lacp_port *); 125static void lacp_aggregator_addref(struct lacp_softc *, 126 struct lacp_aggregator *); 127static void lacp_aggregator_delref(struct lacp_softc *, 128 struct lacp_aggregator *); 129 130/* receive machine */ 131 132static int lacp_pdu_input(struct lacp_port *, struct mbuf *); 133static int lacp_marker_input(struct lacp_port *, struct mbuf *); 134static void lacp_sm_rx(struct lacp_port *, const struct lacpdu *); 135static void lacp_sm_rx_timer(struct lacp_port *); 136static void lacp_sm_rx_set_expired(struct lacp_port *); 137static void lacp_sm_rx_update_ntt(struct lacp_port *, 138 const struct lacpdu *); 139static void lacp_sm_rx_record_pdu(struct lacp_port *, 140 const struct lacpdu *); 141static void lacp_sm_rx_update_selected(struct lacp_port *, 142 const struct lacpdu *); 143static void lacp_sm_rx_record_default(struct lacp_port *); 144static void lacp_sm_rx_update_default_selected(struct lacp_port *); 145static void lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *, 146 const struct lacp_peerinfo *); 147 148/* mux machine */ 149 150static void lacp_sm_mux(struct lacp_port *); 151static void lacp_set_mux(struct lacp_port *, enum lacp_mux_state); 152static void lacp_sm_mux_timer(struct lacp_port *); 153 154/* periodic transmit machine */ 155 156static void lacp_sm_ptx_update_timeout(struct lacp_port *, uint8_t); 157static void lacp_sm_ptx_tx_schedule(struct lacp_port *); 158static void lacp_sm_ptx_timer(struct lacp_port *); 159 160/* transmit machine */ 161 162static void lacp_sm_tx(struct lacp_port *); 163static void lacp_sm_assert_ntt(struct lacp_port *); 164 165static void lacp_run_timers(struct lacp_port *); 166static int lacp_compare_peerinfo(const struct lacp_peerinfo *, 167 const struct lacp_peerinfo *); 168static int lacp_compare_systemid(const struct lacp_systemid *, 169 const struct lacp_systemid *); 170static void lacp_port_enable(struct lacp_port *); 171static void lacp_port_disable(struct lacp_port *); 172static void lacp_select(struct lacp_port *); 173static void lacp_unselect(struct lacp_port *); 174static void lacp_disable_collecting(struct lacp_port *); 175static void lacp_enable_collecting(struct lacp_port *); 176static void lacp_disable_distributing(struct lacp_port *); 177static void lacp_enable_distributing(struct lacp_port *); 178static int lacp_xmit_lacpdu(struct lacp_port *); 179static int lacp_xmit_marker(struct lacp_port *); 180 181/* Debugging */ 182 183static void lacp_dump_lacpdu(const struct lacpdu *); 184static const char *lacp_format_partner(const struct lacp_peerinfo *, char *, 185 size_t); 186static const char *lacp_format_lagid(const struct lacp_peerinfo *, 187 const struct lacp_peerinfo *, char *, size_t); 188static const char *lacp_format_lagid_aggregator(const struct lacp_aggregator *, 189 char *, size_t); 190static const char *lacp_format_state(uint8_t, char *, size_t); 191static const char *lacp_format_mac(const uint8_t *, char *, size_t); 192static const char *lacp_format_systemid(const struct lacp_systemid *, char *, 193 size_t); 194static const char *lacp_format_portid(const struct lacp_portid *, char *, 195 size_t); 196static void lacp_dprintf(const struct lacp_port *, const char *, ...) 197 __attribute__((__format__(__printf__, 2, 3))); 198 199VNET_DEFINE_STATIC(int, lacp_debug); 200#define V_lacp_debug VNET(lacp_debug) 201SYSCTL_NODE(_net_link_lagg, OID_AUTO, lacp, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 202 "ieee802.3ad"); 203SYSCTL_INT(_net_link_lagg_lacp, OID_AUTO, debug, CTLFLAG_RWTUN | CTLFLAG_VNET, 204 &VNET_NAME(lacp_debug), 0, "Enable LACP debug logging (1=debug, 2=trace)"); 205 206VNET_DEFINE_STATIC(int, lacp_default_strict_mode) = 1; 207SYSCTL_INT(_net_link_lagg_lacp, OID_AUTO, default_strict_mode, 208 CTLFLAG_RWTUN | CTLFLAG_VNET, &VNET_NAME(lacp_default_strict_mode), 0, 209 "LACP strict protocol compliance default"); 210#define LACP_DPRINTF(a) if (V_lacp_debug & 0x01) { lacp_dprintf a ; } 211#define LACP_TRACE(a) if (V_lacp_debug & 0x02) { lacp_dprintf(a,"%s\n",__func__); } 212#define LACP_TPRINTF(a) if (V_lacp_debug & 0x04) { lacp_dprintf a ; } 213 214/* 215 * partner administration variables. 216 * XXX should be configurable. 217 */ 218 219static const struct lacp_peerinfo lacp_partner_admin_optimistic = { 220 .lip_systemid = { .lsi_prio = 0xffff }, 221 .lip_portid = { .lpi_prio = 0xffff }, 222 .lip_state = LACP_STATE_SYNC | LACP_STATE_AGGREGATION | 223 LACP_STATE_COLLECTING | LACP_STATE_DISTRIBUTING, 224}; 225 226static const struct lacp_peerinfo lacp_partner_admin_strict = { 227 .lip_systemid = { .lsi_prio = 0xffff }, 228 .lip_portid = { .lpi_prio = 0xffff }, 229 .lip_state = 0, 230}; 231 232static const lacp_timer_func_t lacp_timer_funcs[LACP_NTIMER] = { 233 [LACP_TIMER_CURRENT_WHILE] = lacp_sm_rx_timer, 234 [LACP_TIMER_PERIODIC] = lacp_sm_ptx_timer, 235 [LACP_TIMER_WAIT_WHILE] = lacp_sm_mux_timer, 236}; 237 238struct mbuf * 239lacp_input(struct lagg_port *lgp, struct mbuf *m) 240{ 241 struct lacp_port *lp = LACP_PORT(lgp); 242 uint8_t subtype; 243 244 if (m->m_pkthdr.len < sizeof(struct ether_header) + sizeof(subtype)) { 245 m_freem(m); 246 return (NULL); 247 } 248 249 m_copydata(m, sizeof(struct ether_header), sizeof(subtype), &subtype); 250 switch (subtype) { 251 case SLOWPROTOCOLS_SUBTYPE_LACP: 252 lacp_pdu_input(lp, m); 253 return (NULL); 254 255 case SLOWPROTOCOLS_SUBTYPE_MARKER: 256 lacp_marker_input(lp, m); 257 return (NULL); 258 } 259 260 /* Not a subtype we are interested in */ 261 return (m); 262} 263 264/* 265 * lacp_pdu_input: process lacpdu 266 */ 267static int 268lacp_pdu_input(struct lacp_port *lp, struct mbuf *m) 269{ 270 struct lacp_softc *lsc = lp->lp_lsc; 271 struct lacpdu *du; 272 int error = 0; 273 274 if (m->m_pkthdr.len != sizeof(*du)) { 275 goto bad; 276 } 277 278 if ((m->m_flags & M_MCAST) == 0) { 279 goto bad; 280 } 281 282 if (m->m_len < sizeof(*du)) { 283 m = m_pullup(m, sizeof(*du)); 284 if (m == NULL) { 285 return (ENOMEM); 286 } 287 } 288 289 du = mtod(m, struct lacpdu *); 290 291 if (memcmp(&du->ldu_eh.ether_dhost, 292 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 293 goto bad; 294 } 295 296 /* 297 * ignore the version for compatibility with 298 * the future protocol revisions. 299 */ 300#if 0 301 if (du->ldu_sph.sph_version != 1) { 302 goto bad; 303 } 304#endif 305 306 /* 307 * ignore tlv types for compatibility with 308 * the future protocol revisions. 309 */ 310 if (tlv_check(du, sizeof(*du), &du->ldu_tlv_actor, 311 lacp_info_tlv_template, FALSE)) { 312 goto bad; 313 } 314 315 if (V_lacp_debug > 0) { 316 lacp_dprintf(lp, "lacpdu receive\n"); 317 lacp_dump_lacpdu(du); 318 } 319 320 if ((1 << lp->lp_ifp->if_dunit) & lp->lp_lsc->lsc_debug.lsc_rx_test) { 321 LACP_TPRINTF((lp, "Dropping RX PDU\n")); 322 goto bad; 323 } 324 325 LACP_LOCK(lsc); 326 lacp_sm_rx(lp, du); 327 LACP_UNLOCK(lsc); 328 329 m_freem(m); 330 return (error); 331 332bad: 333 m_freem(m); 334 return (EINVAL); 335} 336 337static void 338lacp_fill_actorinfo(struct lacp_port *lp, struct lacp_peerinfo *info) 339{ 340 struct lagg_port *lgp = lp->lp_lagg; 341 struct lagg_softc *sc = lgp->lp_softc; 342 343 info->lip_systemid.lsi_prio = htons(LACP_SYSTEM_PRIO); 344 memcpy(&info->lip_systemid.lsi_mac, 345 IF_LLADDR(sc->sc_ifp), ETHER_ADDR_LEN); 346 info->lip_portid.lpi_prio = htons(LACP_PORT_PRIO); 347 info->lip_portid.lpi_portno = htons(lp->lp_ifp->if_index); 348 info->lip_state = lp->lp_state; 349} 350 351static void 352lacp_fill_markerinfo(struct lacp_port *lp, struct lacp_markerinfo *info) 353{ 354 struct ifnet *ifp = lp->lp_ifp; 355 356 /* Fill in the port index and system id (encoded as the MAC) */ 357 info->mi_rq_port = htons(ifp->if_index); 358 memcpy(&info->mi_rq_system, lp->lp_systemid.lsi_mac, ETHER_ADDR_LEN); 359 info->mi_rq_xid = htonl(0); 360} 361 362static int 363lacp_xmit_lacpdu(struct lacp_port *lp) 364{ 365 struct lagg_port *lgp = lp->lp_lagg; 366 struct mbuf *m; 367 struct lacpdu *du; 368 int error; 369 370 LACP_LOCK_ASSERT(lp->lp_lsc); 371 372 m = m_gethdr(M_NOWAIT, MT_DATA); 373 if (m == NULL) { 374 return (ENOMEM); 375 } 376 m->m_len = m->m_pkthdr.len = sizeof(*du); 377 378 du = mtod(m, struct lacpdu *); 379 memset(du, 0, sizeof(*du)); 380 381 memcpy(&du->ldu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 382 ETHER_ADDR_LEN); 383 memcpy(&du->ldu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN); 384 du->ldu_eh.ether_type = htons(ETHERTYPE_SLOW); 385 386 du->ldu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_LACP; 387 du->ldu_sph.sph_version = 1; 388 389 TLV_SET(&du->ldu_tlv_actor, LACP_TYPE_ACTORINFO, sizeof(du->ldu_actor)); 390 du->ldu_actor = lp->lp_actor; 391 392 TLV_SET(&du->ldu_tlv_partner, LACP_TYPE_PARTNERINFO, 393 sizeof(du->ldu_partner)); 394 du->ldu_partner = lp->lp_partner; 395 396 TLV_SET(&du->ldu_tlv_collector, LACP_TYPE_COLLECTORINFO, 397 sizeof(du->ldu_collector)); 398 du->ldu_collector.lci_maxdelay = 0; 399 400 if (V_lacp_debug > 0) { 401 lacp_dprintf(lp, "lacpdu transmit\n"); 402 lacp_dump_lacpdu(du); 403 } 404 405 m->m_flags |= M_MCAST; 406 407 /* 408 * XXX should use higher priority queue. 409 * otherwise network congestion can break aggregation. 410 */ 411 412 error = lagg_enqueue(lp->lp_ifp, m); 413 return (error); 414} 415 416static int 417lacp_xmit_marker(struct lacp_port *lp) 418{ 419 struct lagg_port *lgp = lp->lp_lagg; 420 struct mbuf *m; 421 struct markerdu *mdu; 422 int error; 423 424 LACP_LOCK_ASSERT(lp->lp_lsc); 425 426 m = m_gethdr(M_NOWAIT, MT_DATA); 427 if (m == NULL) { 428 return (ENOMEM); 429 } 430 m->m_len = m->m_pkthdr.len = sizeof(*mdu); 431 432 mdu = mtod(m, struct markerdu *); 433 memset(mdu, 0, sizeof(*mdu)); 434 435 memcpy(&mdu->mdu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 436 ETHER_ADDR_LEN); 437 memcpy(&mdu->mdu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN); 438 mdu->mdu_eh.ether_type = htons(ETHERTYPE_SLOW); 439 440 mdu->mdu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_MARKER; 441 mdu->mdu_sph.sph_version = 1; 442 443 /* Bump the transaction id and copy over the marker info */ 444 lp->lp_marker.mi_rq_xid = htonl(ntohl(lp->lp_marker.mi_rq_xid) + 1); 445 TLV_SET(&mdu->mdu_tlv, MARKER_TYPE_INFO, sizeof(mdu->mdu_info)); 446 mdu->mdu_info = lp->lp_marker; 447 448 LACP_DPRINTF((lp, "marker transmit, port=%u, sys=%6D, id=%u\n", 449 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, ":", 450 ntohl(mdu->mdu_info.mi_rq_xid))); 451 452 m->m_flags |= M_MCAST; 453 error = lagg_enqueue(lp->lp_ifp, m); 454 return (error); 455} 456 457void 458lacp_linkstate(struct lagg_port *lgp) 459{ 460 struct lacp_port *lp = LACP_PORT(lgp); 461 struct lacp_softc *lsc = lp->lp_lsc; 462 struct ifnet *ifp = lgp->lp_ifp; 463 struct ifmediareq ifmr; 464 int error = 0; 465 u_int media; 466 uint8_t old_state; 467 uint16_t old_key; 468 469 bzero((char *)&ifmr, sizeof(ifmr)); 470 error = (*ifp->if_ioctl)(ifp, SIOCGIFXMEDIA, (caddr_t)&ifmr); 471 if (error != 0) { 472 bzero((char *)&ifmr, sizeof(ifmr)); 473 error = (*ifp->if_ioctl)(ifp, SIOCGIFMEDIA, (caddr_t)&ifmr); 474 } 475 if (error != 0) 476 return; 477 478 LACP_LOCK(lsc); 479 media = ifmr.ifm_active; 480 LACP_DPRINTF((lp, "media changed 0x%x -> 0x%x, ether = %d, fdx = %d, " 481 "link = %d\n", lp->lp_media, media, IFM_TYPE(media) == IFM_ETHER, 482 (media & IFM_FDX) != 0, ifp->if_link_state == LINK_STATE_UP)); 483 old_state = lp->lp_state; 484 old_key = lp->lp_key; 485 486 lp->lp_media = media; 487 /* 488 * If the port is not an active full duplex Ethernet link then it can 489 * not be aggregated. 490 */ 491 if (IFM_TYPE(media) != IFM_ETHER || (media & IFM_FDX) == 0 || 492 ifp->if_link_state != LINK_STATE_UP) { 493 lacp_port_disable(lp); 494 } else { 495 lacp_port_enable(lp); 496 } 497 lp->lp_key = lacp_compose_key(lp); 498 499 if (old_state != lp->lp_state || old_key != lp->lp_key) { 500 LACP_DPRINTF((lp, "-> UNSELECTED\n")); 501 lp->lp_selected = LACP_UNSELECTED; 502 } 503 LACP_UNLOCK(lsc); 504} 505 506static void 507lacp_tick(void *arg) 508{ 509 struct lacp_softc *lsc = arg; 510 struct lacp_port *lp; 511 512 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { 513 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) 514 continue; 515 516 CURVNET_SET(lp->lp_ifp->if_vnet); 517 lacp_run_timers(lp); 518 519 lacp_select(lp); 520 lacp_sm_mux(lp); 521 lacp_sm_tx(lp); 522 lacp_sm_ptx_tx_schedule(lp); 523 CURVNET_RESTORE(); 524 } 525 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc); 526} 527 528int 529lacp_port_create(struct lagg_port *lgp) 530{ 531 struct lagg_softc *sc = lgp->lp_softc; 532 struct lacp_softc *lsc = LACP_SOFTC(sc); 533 struct lacp_port *lp; 534 struct ifnet *ifp = lgp->lp_ifp; 535 struct sockaddr_dl sdl; 536 struct ifmultiaddr *rifma = NULL; 537 int error; 538 539 link_init_sdl(ifp, (struct sockaddr *)&sdl, IFT_ETHER); 540 sdl.sdl_alen = ETHER_ADDR_LEN; 541 542 bcopy(ðermulticastaddr_slowprotocols, 543 LLADDR(&sdl), ETHER_ADDR_LEN); 544 error = if_addmulti(ifp, (struct sockaddr *)&sdl, &rifma); 545 if (error) { 546 printf("%s: ADDMULTI failed on %s\n", __func__, 547 lgp->lp_ifp->if_xname); 548 return (error); 549 } 550 551 lp = malloc(sizeof(struct lacp_port), 552 M_DEVBUF, M_NOWAIT|M_ZERO); 553 if (lp == NULL) 554 return (ENOMEM); 555 556 LACP_LOCK(lsc); 557 lgp->lp_psc = lp; 558 lp->lp_ifp = ifp; 559 lp->lp_lagg = lgp; 560 lp->lp_lsc = lsc; 561 lp->lp_ifma = rifma; 562 563 LIST_INSERT_HEAD(&lsc->lsc_ports, lp, lp_next); 564 565 lacp_fill_actorinfo(lp, &lp->lp_actor); 566 lacp_fill_markerinfo(lp, &lp->lp_marker); 567 lp->lp_state = LACP_STATE_ACTIVITY; 568 lp->lp_aggregator = NULL; 569 lacp_sm_rx_set_expired(lp); 570 LACP_UNLOCK(lsc); 571 lacp_linkstate(lgp); 572 573 return (0); 574} 575 576void 577lacp_port_destroy(struct lagg_port *lgp) 578{ 579 struct lacp_port *lp = LACP_PORT(lgp); 580 struct lacp_softc *lsc = lp->lp_lsc; 581 int i; 582 583 LACP_LOCK(lsc); 584 for (i = 0; i < LACP_NTIMER; i++) { 585 LACP_TIMER_DISARM(lp, i); 586 } 587 588 lacp_disable_collecting(lp); 589 lacp_disable_distributing(lp); 590 lacp_unselect(lp); 591 592 LIST_REMOVE(lp, lp_next); 593 LACP_UNLOCK(lsc); 594 595 /* The address may have already been removed by if_purgemaddrs() */ 596 if (!lgp->lp_detaching) 597 if_delmulti_ifma(lp->lp_ifma); 598 599 free(lp, M_DEVBUF); 600} 601 602void 603lacp_req(struct lagg_softc *sc, void *data) 604{ 605 struct lacp_opreq *req = (struct lacp_opreq *)data; 606 struct lacp_softc *lsc = LACP_SOFTC(sc); 607 struct lacp_aggregator *la; 608 609 bzero(req, sizeof(struct lacp_opreq)); 610 611 /* 612 * If the LACP softc is NULL, return with the opreq structure full of 613 * zeros. It is normal for the softc to be NULL while the lagg is 614 * being destroyed. 615 */ 616 if (NULL == lsc) 617 return; 618 619 la = lsc->lsc_active_aggregator; 620 LACP_LOCK(lsc); 621 if (la != NULL) { 622 req->actor_prio = ntohs(la->la_actor.lip_systemid.lsi_prio); 623 memcpy(&req->actor_mac, &la->la_actor.lip_systemid.lsi_mac, 624 ETHER_ADDR_LEN); 625 req->actor_key = ntohs(la->la_actor.lip_key); 626 req->actor_portprio = ntohs(la->la_actor.lip_portid.lpi_prio); 627 req->actor_portno = ntohs(la->la_actor.lip_portid.lpi_portno); 628 req->actor_state = la->la_actor.lip_state; 629 630 req->partner_prio = ntohs(la->la_partner.lip_systemid.lsi_prio); 631 memcpy(&req->partner_mac, &la->la_partner.lip_systemid.lsi_mac, 632 ETHER_ADDR_LEN); 633 req->partner_key = ntohs(la->la_partner.lip_key); 634 req->partner_portprio = ntohs(la->la_partner.lip_portid.lpi_prio); 635 req->partner_portno = ntohs(la->la_partner.lip_portid.lpi_portno); 636 req->partner_state = la->la_partner.lip_state; 637 } 638 LACP_UNLOCK(lsc); 639} 640 641void 642lacp_portreq(struct lagg_port *lgp, void *data) 643{ 644 struct lacp_opreq *req = (struct lacp_opreq *)data; 645 struct lacp_port *lp = LACP_PORT(lgp); 646 struct lacp_softc *lsc = lp->lp_lsc; 647 648 LACP_LOCK(lsc); 649 req->actor_prio = ntohs(lp->lp_actor.lip_systemid.lsi_prio); 650 memcpy(&req->actor_mac, &lp->lp_actor.lip_systemid.lsi_mac, 651 ETHER_ADDR_LEN); 652 req->actor_key = ntohs(lp->lp_actor.lip_key); 653 req->actor_portprio = ntohs(lp->lp_actor.lip_portid.lpi_prio); 654 req->actor_portno = ntohs(lp->lp_actor.lip_portid.lpi_portno); 655 req->actor_state = lp->lp_actor.lip_state; 656 657 req->partner_prio = ntohs(lp->lp_partner.lip_systemid.lsi_prio); 658 memcpy(&req->partner_mac, &lp->lp_partner.lip_systemid.lsi_mac, 659 ETHER_ADDR_LEN); 660 req->partner_key = ntohs(lp->lp_partner.lip_key); 661 req->partner_portprio = ntohs(lp->lp_partner.lip_portid.lpi_prio); 662 req->partner_portno = ntohs(lp->lp_partner.lip_portid.lpi_portno); 663 req->partner_state = lp->lp_partner.lip_state; 664 LACP_UNLOCK(lsc); 665} 666 667static void 668lacp_disable_collecting(struct lacp_port *lp) 669{ 670 LACP_DPRINTF((lp, "collecting disabled\n")); 671 lp->lp_state &= ~LACP_STATE_COLLECTING; 672} 673 674static void 675lacp_enable_collecting(struct lacp_port *lp) 676{ 677 LACP_DPRINTF((lp, "collecting enabled\n")); 678 lp->lp_state |= LACP_STATE_COLLECTING; 679} 680 681static void 682lacp_disable_distributing(struct lacp_port *lp) 683{ 684 struct lacp_aggregator *la = lp->lp_aggregator; 685 struct lacp_softc *lsc = lp->lp_lsc; 686 struct lagg_softc *sc = lsc->lsc_softc; 687 char buf[LACP_LAGIDSTR_MAX+1]; 688 689 LACP_LOCK_ASSERT(lsc); 690 691 if (la == NULL || (lp->lp_state & LACP_STATE_DISTRIBUTING) == 0) { 692 return; 693 } 694 695 KASSERT(!TAILQ_EMPTY(&la->la_ports), ("no aggregator ports")); 696 KASSERT(la->la_nports > 0, ("nports invalid (%d)", la->la_nports)); 697 KASSERT(la->la_refcnt >= la->la_nports, ("aggregator refcnt invalid")); 698 699 LACP_DPRINTF((lp, "disable distributing on aggregator %s, " 700 "nports %d -> %d\n", 701 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 702 la->la_nports, la->la_nports - 1)); 703 704 TAILQ_REMOVE(&la->la_ports, lp, lp_dist_q); 705 la->la_nports--; 706 sc->sc_active = la->la_nports; 707 708 if (lsc->lsc_active_aggregator == la) { 709 lacp_suppress_distributing(lsc, la); 710 lacp_select_active_aggregator(lsc); 711 /* regenerate the port map, the active aggregator has changed */ 712 lacp_update_portmap(lsc); 713 } 714 715 lp->lp_state &= ~LACP_STATE_DISTRIBUTING; 716 if_link_state_change(sc->sc_ifp, 717 sc->sc_active ? LINK_STATE_UP : LINK_STATE_DOWN); 718} 719 720static void 721lacp_enable_distributing(struct lacp_port *lp) 722{ 723 struct lacp_aggregator *la = lp->lp_aggregator; 724 struct lacp_softc *lsc = lp->lp_lsc; 725 struct lagg_softc *sc = lsc->lsc_softc; 726 char buf[LACP_LAGIDSTR_MAX+1]; 727 728 LACP_LOCK_ASSERT(lsc); 729 730 if ((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0) { 731 return; 732 } 733 734 LACP_DPRINTF((lp, "enable distributing on aggregator %s, " 735 "nports %d -> %d\n", 736 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 737 la->la_nports, la->la_nports + 1)); 738 739 KASSERT(la->la_refcnt > la->la_nports, ("aggregator refcnt invalid")); 740 TAILQ_INSERT_HEAD(&la->la_ports, lp, lp_dist_q); 741 la->la_nports++; 742 sc->sc_active = la->la_nports; 743 744 lp->lp_state |= LACP_STATE_DISTRIBUTING; 745 746 if (lsc->lsc_active_aggregator == la) { 747 lacp_suppress_distributing(lsc, la); 748 lacp_update_portmap(lsc); 749 } else 750 /* try to become the active aggregator */ 751 lacp_select_active_aggregator(lsc); 752 753 if_link_state_change(sc->sc_ifp, 754 sc->sc_active ? LINK_STATE_UP : LINK_STATE_DOWN); 755} 756 757static void 758lacp_transit_expire(void *vp) 759{ 760 struct lacp_softc *lsc = vp; 761 762 LACP_LOCK_ASSERT(lsc); 763 764 CURVNET_SET(lsc->lsc_softc->sc_ifp->if_vnet); 765 LACP_TRACE(NULL); 766 CURVNET_RESTORE(); 767 768 lsc->lsc_suppress_distributing = FALSE; 769} 770 771void 772lacp_attach(struct lagg_softc *sc) 773{ 774 struct lacp_softc *lsc; 775 776 lsc = malloc(sizeof(struct lacp_softc), M_DEVBUF, M_WAITOK | M_ZERO); 777 778 sc->sc_psc = lsc; 779 lsc->lsc_softc = sc; 780 781 lsc->lsc_hashkey = m_ether_tcpip_hash_init(); 782 lsc->lsc_active_aggregator = NULL; 783 lsc->lsc_strict_mode = VNET(lacp_default_strict_mode); 784 LACP_LOCK_INIT(lsc); 785 TAILQ_INIT(&lsc->lsc_aggregators); 786 LIST_INIT(&lsc->lsc_ports); 787 788 callout_init_mtx(&lsc->lsc_transit_callout, &lsc->lsc_mtx, 0); 789 callout_init_mtx(&lsc->lsc_callout, &lsc->lsc_mtx, 0); 790 791 /* if the lagg is already up then do the same */ 792 if (sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING) 793 lacp_init(sc); 794} 795 796void 797lacp_detach(void *psc) 798{ 799 struct lacp_softc *lsc = (struct lacp_softc *)psc; 800 801 KASSERT(TAILQ_EMPTY(&lsc->lsc_aggregators), 802 ("aggregators still active")); 803 KASSERT(lsc->lsc_active_aggregator == NULL, 804 ("aggregator still attached")); 805 806 callout_drain(&lsc->lsc_transit_callout); 807 callout_drain(&lsc->lsc_callout); 808 809 LACP_LOCK_DESTROY(lsc); 810 free(lsc, M_DEVBUF); 811} 812 813void 814lacp_init(struct lagg_softc *sc) 815{ 816 struct lacp_softc *lsc = LACP_SOFTC(sc); 817 818 LACP_LOCK(lsc); 819 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc); 820 LACP_UNLOCK(lsc); 821} 822 823void 824lacp_stop(struct lagg_softc *sc) 825{ 826 struct lacp_softc *lsc = LACP_SOFTC(sc); 827 828 LACP_LOCK(lsc); 829 callout_stop(&lsc->lsc_transit_callout); 830 callout_stop(&lsc->lsc_callout); 831 LACP_UNLOCK(lsc); 832} 833 834struct lagg_port * 835lacp_select_tx_port_by_hash(struct lagg_softc *sc, uint32_t hash, 836 uint8_t numa_domain, int *err) 837{ 838 struct lacp_softc *lsc = LACP_SOFTC(sc); 839 struct lacp_portmap *pm; 840 struct lacp_port *lp; 841 struct lacp_port **map; 842 int count; 843 844 if (__predict_false(lsc->lsc_suppress_distributing)) { 845 LACP_DPRINTF((NULL, "%s: waiting transit\n", __func__)); 846 *err = ENOBUFS; 847 return (NULL); 848 } 849 850 pm = &lsc->lsc_pmap[lsc->lsc_activemap]; 851 if (pm->pm_count == 0) { 852 LACP_DPRINTF((NULL, "%s: no active aggregator\n", __func__)); 853 *err = ENETDOWN; 854 return (NULL); 855 } 856 857#ifdef NUMA 858 if ((sc->sc_opts & LAGG_OPT_USE_NUMA) && 859 pm->pm_num_dom > 1 && numa_domain < MAXMEMDOM) { 860 count = pm->pm_numa[numa_domain].count; 861 if (count > 0) { 862 map = pm->pm_numa[numa_domain].map; 863 } else { 864 /* No ports on this domain; use global hash. */ 865 map = pm->pm_map; 866 count = pm->pm_count; 867 } 868 } else 869#endif 870 { 871 map = pm->pm_map; 872 count = pm->pm_count; 873 } 874 875 hash %= count; 876 lp = map[hash]; 877 878 return (lp->lp_lagg); 879} 880 881struct lagg_port * 882lacp_select_tx_port(struct lagg_softc *sc, struct mbuf *m, int *err) 883{ 884 struct lacp_softc *lsc = LACP_SOFTC(sc); 885 uint32_t hash; 886 uint8_t numa_domain; 887 888 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) && 889 M_HASHTYPE_GET(m) != M_HASHTYPE_NONE) 890 hash = m->m_pkthdr.flowid >> sc->flowid_shift; 891 else 892 hash = m_ether_tcpip_hash(sc->sc_flags, m, lsc->lsc_hashkey); 893 894 numa_domain = m->m_pkthdr.numa_domain; 895 return (lacp_select_tx_port_by_hash(sc, hash, numa_domain, err)); 896} 897 898/* 899 * lacp_suppress_distributing: drop transmit packets for a while 900 * to preserve packet ordering. 901 */ 902 903static void 904lacp_suppress_distributing(struct lacp_softc *lsc, struct lacp_aggregator *la) 905{ 906 struct lacp_port *lp; 907 908 if (lsc->lsc_active_aggregator != la) { 909 return; 910 } 911 912 LACP_TRACE(NULL); 913 914 lsc->lsc_suppress_distributing = TRUE; 915 916 /* send a marker frame down each port to verify the queues are empty */ 917 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { 918 lp->lp_flags |= LACP_PORT_MARK; 919 if (lacp_xmit_marker(lp) != 0) 920 lp->lp_flags &= ~LACP_PORT_MARK; 921 } 922 923 /* set a timeout for the marker frames */ 924 callout_reset(&lsc->lsc_transit_callout, 925 LACP_TRANSIT_DELAY * hz / 1000, lacp_transit_expire, lsc); 926} 927 928static int 929lacp_compare_peerinfo(const struct lacp_peerinfo *a, 930 const struct lacp_peerinfo *b) 931{ 932 return (memcmp(a, b, offsetof(struct lacp_peerinfo, lip_state))); 933} 934 935static int 936lacp_compare_systemid(const struct lacp_systemid *a, 937 const struct lacp_systemid *b) 938{ 939 return (memcmp(a, b, sizeof(*a))); 940} 941 942#if 0 /* unused */ 943static int 944lacp_compare_portid(const struct lacp_portid *a, 945 const struct lacp_portid *b) 946{ 947 return (memcmp(a, b, sizeof(*a))); 948} 949#endif 950 951static uint64_t 952lacp_aggregator_bandwidth(struct lacp_aggregator *la) 953{ 954 struct lacp_port *lp; 955 uint64_t speed; 956 957 lp = TAILQ_FIRST(&la->la_ports); 958 if (lp == NULL) { 959 return (0); 960 } 961 962 speed = ifmedia_baudrate(lp->lp_media); 963 speed *= la->la_nports; 964 if (speed == 0) { 965 LACP_DPRINTF((lp, "speed 0? media=0x%x nports=%d\n", 966 lp->lp_media, la->la_nports)); 967 } 968 969 return (speed); 970} 971 972/* 973 * lacp_select_active_aggregator: select an aggregator to be used to transmit 974 * packets from lagg(4) interface. 975 */ 976 977static void 978lacp_select_active_aggregator(struct lacp_softc *lsc) 979{ 980 struct lacp_aggregator *la; 981 struct lacp_aggregator *best_la = NULL; 982 uint64_t best_speed = 0; 983 char buf[LACP_LAGIDSTR_MAX+1]; 984 985 LACP_TRACE(NULL); 986 987 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 988 uint64_t speed; 989 990 if (la->la_nports == 0) { 991 continue; 992 } 993 994 speed = lacp_aggregator_bandwidth(la); 995 LACP_DPRINTF((NULL, "%s, speed=%jd, nports=%d\n", 996 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 997 speed, la->la_nports)); 998 999 /* 1000 * This aggregator is chosen if the partner has a better 1001 * system priority or, the total aggregated speed is higher 1002 * or, it is already the chosen aggregator 1003 */ 1004 if ((best_la != NULL && LACP_SYS_PRI(la->la_partner) < 1005 LACP_SYS_PRI(best_la->la_partner)) || 1006 speed > best_speed || 1007 (speed == best_speed && 1008 la == lsc->lsc_active_aggregator)) { 1009 best_la = la; 1010 best_speed = speed; 1011 } 1012 } 1013 1014 KASSERT(best_la == NULL || best_la->la_nports > 0, 1015 ("invalid aggregator refcnt")); 1016 KASSERT(best_la == NULL || !TAILQ_EMPTY(&best_la->la_ports), 1017 ("invalid aggregator list")); 1018 1019 if (lsc->lsc_active_aggregator != best_la) { 1020 LACP_DPRINTF((NULL, "active aggregator changed\n")); 1021 LACP_DPRINTF((NULL, "old %s\n", 1022 lacp_format_lagid_aggregator(lsc->lsc_active_aggregator, 1023 buf, sizeof(buf)))); 1024 } else { 1025 LACP_DPRINTF((NULL, "active aggregator not changed\n")); 1026 } 1027 LACP_DPRINTF((NULL, "new %s\n", 1028 lacp_format_lagid_aggregator(best_la, buf, sizeof(buf)))); 1029 1030 if (lsc->lsc_active_aggregator != best_la) { 1031 lsc->lsc_active_aggregator = best_la; 1032 lacp_update_portmap(lsc); 1033 if (best_la) { 1034 lacp_suppress_distributing(lsc, best_la); 1035 } 1036 } 1037} 1038 1039/* 1040 * Updated the inactive portmap array with the new list of ports and 1041 * make it live. 1042 */ 1043static void 1044lacp_update_portmap(struct lacp_softc *lsc) 1045{ 1046 struct lagg_softc *sc = lsc->lsc_softc; 1047 struct lacp_aggregator *la; 1048 struct lacp_portmap *p; 1049 struct lacp_port *lp; 1050 uint64_t speed; 1051 u_int newmap; 1052 int i; 1053#ifdef NUMA 1054 int count; 1055 uint8_t domain; 1056#endif 1057 1058 newmap = lsc->lsc_activemap == 0 ? 1 : 0; 1059 p = &lsc->lsc_pmap[newmap]; 1060 la = lsc->lsc_active_aggregator; 1061 speed = 0; 1062 bzero(p, sizeof(struct lacp_portmap)); 1063 1064 if (la != NULL && la->la_nports > 0) { 1065 p->pm_count = la->la_nports; 1066 i = 0; 1067 TAILQ_FOREACH(lp, &la->la_ports, lp_dist_q) { 1068 p->pm_map[i++] = lp; 1069#ifdef NUMA 1070 domain = lp->lp_ifp->if_numa_domain; 1071 if (domain >= MAXMEMDOM) 1072 continue; 1073 count = p->pm_numa[domain].count; 1074 p->pm_numa[domain].map[count] = lp; 1075 p->pm_numa[domain].count++; 1076#endif 1077 } 1078 KASSERT(i == p->pm_count, ("Invalid port count")); 1079 1080#ifdef NUMA 1081 for (i = 0; i < MAXMEMDOM; i++) { 1082 if (p->pm_numa[i].count != 0) 1083 p->pm_num_dom++; 1084 } 1085#endif 1086 speed = lacp_aggregator_bandwidth(la); 1087 } 1088 sc->sc_ifp->if_baudrate = speed; 1089 EVENTHANDLER_INVOKE(ifnet_event, sc->sc_ifp, 1090 IFNET_EVENT_UPDATE_BAUDRATE); 1091 1092 /* switch the active portmap over */ 1093 atomic_store_rel_int(&lsc->lsc_activemap, newmap); 1094 LACP_DPRINTF((NULL, "Set table %d with %d ports\n", 1095 lsc->lsc_activemap, 1096 lsc->lsc_pmap[lsc->lsc_activemap].pm_count)); 1097} 1098 1099static uint16_t 1100lacp_compose_key(struct lacp_port *lp) 1101{ 1102 struct lagg_port *lgp = lp->lp_lagg; 1103 struct lagg_softc *sc = lgp->lp_softc; 1104 u_int media = lp->lp_media; 1105 uint16_t key; 1106 1107 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) { 1108 /* 1109 * non-aggregatable links should have unique keys. 1110 * 1111 * XXX this isn't really unique as if_index is 16 bit. 1112 */ 1113 1114 /* bit 0..14: (some bits of) if_index of this port */ 1115 key = lp->lp_ifp->if_index; 1116 /* bit 15: 1 */ 1117 key |= 0x8000; 1118 } else { 1119 u_int subtype = IFM_SUBTYPE(media); 1120 1121 KASSERT(IFM_TYPE(media) == IFM_ETHER, ("invalid media type")); 1122 KASSERT((media & IFM_FDX) != 0, ("aggregating HDX interface")); 1123 1124 /* bit 0..4: IFM_SUBTYPE modulo speed */ 1125 switch (subtype) { 1126 case IFM_10_T: 1127 case IFM_10_2: 1128 case IFM_10_5: 1129 case IFM_10_STP: 1130 case IFM_10_FL: 1131 key = IFM_10_T; 1132 break; 1133 case IFM_100_TX: 1134 case IFM_100_FX: 1135 case IFM_100_T4: 1136 case IFM_100_VG: 1137 case IFM_100_T2: 1138 case IFM_100_T: 1139 case IFM_100_SGMII: 1140 key = IFM_100_TX; 1141 break; 1142 case IFM_1000_SX: 1143 case IFM_1000_LX: 1144 case IFM_1000_CX: 1145 case IFM_1000_T: 1146 case IFM_1000_KX: 1147 case IFM_1000_SGMII: 1148 case IFM_1000_CX_SGMII: 1149 key = IFM_1000_SX; 1150 break; 1151 case IFM_10G_LR: 1152 case IFM_10G_SR: 1153 case IFM_10G_CX4: 1154 case IFM_10G_TWINAX: 1155 case IFM_10G_TWINAX_LONG: 1156 case IFM_10G_LRM: 1157 case IFM_10G_T: 1158 case IFM_10G_KX4: 1159 case IFM_10G_KR: 1160 case IFM_10G_CR1: 1161 case IFM_10G_ER: 1162 case IFM_10G_SFI: 1163 case IFM_10G_AOC: 1164 key = IFM_10G_LR; 1165 break; 1166 case IFM_20G_KR2: 1167 key = IFM_20G_KR2; 1168 break; 1169 case IFM_2500_KX: 1170 case IFM_2500_T: 1171 case IFM_2500_X: 1172 key = IFM_2500_KX; 1173 break; 1174 case IFM_5000_T: 1175 case IFM_5000_KR: 1176 case IFM_5000_KR_S: 1177 case IFM_5000_KR1: 1178 key = IFM_5000_T; 1179 break; 1180 case IFM_50G_PCIE: 1181 case IFM_50G_CR2: 1182 case IFM_50G_KR2: 1183 case IFM_50G_KR4: 1184 case IFM_50G_SR2: 1185 case IFM_50G_LR2: 1186 case IFM_50G_LAUI2_AC: 1187 case IFM_50G_LAUI2: 1188 case IFM_50G_AUI2_AC: 1189 case IFM_50G_AUI2: 1190 case IFM_50G_CP: 1191 case IFM_50G_SR: 1192 case IFM_50G_LR: 1193 case IFM_50G_FR: 1194 case IFM_50G_KR_PAM4: 1195 case IFM_50G_AUI1_AC: 1196 case IFM_50G_AUI1: 1197 key = IFM_50G_PCIE; 1198 break; 1199 case IFM_56G_R4: 1200 key = IFM_56G_R4; 1201 break; 1202 case IFM_25G_PCIE: 1203 case IFM_25G_CR: 1204 case IFM_25G_KR: 1205 case IFM_25G_SR: 1206 case IFM_25G_LR: 1207 case IFM_25G_ACC: 1208 case IFM_25G_AOC: 1209 case IFM_25G_T: 1210 case IFM_25G_CR_S: 1211 case IFM_25G_CR1: 1212 case IFM_25G_KR_S: 1213 case IFM_25G_AUI: 1214 case IFM_25G_KR1: 1215 key = IFM_25G_PCIE; 1216 break; 1217 case IFM_40G_CR4: 1218 case IFM_40G_SR4: 1219 case IFM_40G_LR4: 1220 case IFM_40G_LM4: 1221 case IFM_40G_XLPPI: 1222 case IFM_40G_KR4: 1223 case IFM_40G_XLAUI: 1224 case IFM_40G_XLAUI_AC: 1225 case IFM_40G_ER4: 1226 key = IFM_40G_CR4; 1227 break; 1228 case IFM_100G_CR4: 1229 case IFM_100G_SR4: 1230 case IFM_100G_KR4: 1231 case IFM_100G_LR4: 1232 case IFM_100G_CAUI4_AC: 1233 case IFM_100G_CAUI4: 1234 case IFM_100G_AUI4_AC: 1235 case IFM_100G_AUI4: 1236 case IFM_100G_CR_PAM4: 1237 case IFM_100G_KR_PAM4: 1238 case IFM_100G_CP2: 1239 case IFM_100G_SR2: 1240 case IFM_100G_DR: 1241 case IFM_100G_KR2_PAM4: 1242 case IFM_100G_CAUI2_AC: 1243 case IFM_100G_CAUI2: 1244 case IFM_100G_AUI2_AC: 1245 case IFM_100G_AUI2: 1246 key = IFM_100G_CR4; 1247 break; 1248 case IFM_200G_CR4_PAM4: 1249 case IFM_200G_SR4: 1250 case IFM_200G_FR4: 1251 case IFM_200G_LR4: 1252 case IFM_200G_DR4: 1253 case IFM_200G_KR4_PAM4: 1254 case IFM_200G_AUI4_AC: 1255 case IFM_200G_AUI4: 1256 case IFM_200G_AUI8_AC: 1257 case IFM_200G_AUI8: 1258 key = IFM_200G_CR4_PAM4; 1259 break; 1260 case IFM_400G_FR8: 1261 case IFM_400G_LR8: 1262 case IFM_400G_DR4: 1263 case IFM_400G_AUI8_AC: 1264 case IFM_400G_AUI8: 1265 key = IFM_400G_FR8; 1266 break; 1267 default: 1268 key = subtype; 1269 break; 1270 } 1271 /* bit 5..14: (some bits of) if_index of lagg device */ 1272 key |= 0x7fe0 & ((sc->sc_ifp->if_index) << 5); 1273 /* bit 15: 0 */ 1274 } 1275 return (htons(key)); 1276} 1277 1278static void 1279lacp_aggregator_addref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1280{ 1281 char buf[LACP_LAGIDSTR_MAX+1]; 1282 1283 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1284 __func__, 1285 lacp_format_lagid(&la->la_actor, &la->la_partner, 1286 buf, sizeof(buf)), 1287 la->la_refcnt, la->la_refcnt + 1)); 1288 1289 KASSERT(la->la_refcnt > 0, ("refcount <= 0")); 1290 la->la_refcnt++; 1291 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcount")); 1292} 1293 1294static void 1295lacp_aggregator_delref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1296{ 1297 char buf[LACP_LAGIDSTR_MAX+1]; 1298 1299 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1300 __func__, 1301 lacp_format_lagid(&la->la_actor, &la->la_partner, 1302 buf, sizeof(buf)), 1303 la->la_refcnt, la->la_refcnt - 1)); 1304 1305 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcnt")); 1306 la->la_refcnt--; 1307 if (la->la_refcnt > 0) { 1308 return; 1309 } 1310 1311 KASSERT(la->la_refcnt == 0, ("refcount not zero")); 1312 KASSERT(lsc->lsc_active_aggregator != la, ("aggregator active")); 1313 1314 TAILQ_REMOVE(&lsc->lsc_aggregators, la, la_q); 1315 1316 free(la, M_DEVBUF); 1317} 1318 1319/* 1320 * lacp_aggregator_get: allocate an aggregator. 1321 */ 1322 1323static struct lacp_aggregator * 1324lacp_aggregator_get(struct lacp_softc *lsc, struct lacp_port *lp) 1325{ 1326 struct lacp_aggregator *la; 1327 1328 la = malloc(sizeof(*la), M_DEVBUF, M_NOWAIT); 1329 if (la) { 1330 la->la_refcnt = 1; 1331 la->la_nports = 0; 1332 TAILQ_INIT(&la->la_ports); 1333 la->la_pending = 0; 1334 TAILQ_INSERT_TAIL(&lsc->lsc_aggregators, la, la_q); 1335 } 1336 1337 return (la); 1338} 1339 1340/* 1341 * lacp_fill_aggregator_id: setup a newly allocated aggregator from a port. 1342 */ 1343 1344static void 1345lacp_fill_aggregator_id(struct lacp_aggregator *la, const struct lacp_port *lp) 1346{ 1347 lacp_fill_aggregator_id_peer(&la->la_partner, &lp->lp_partner); 1348 lacp_fill_aggregator_id_peer(&la->la_actor, &lp->lp_actor); 1349 1350 la->la_actor.lip_state = lp->lp_state & LACP_STATE_AGGREGATION; 1351} 1352 1353static void 1354lacp_fill_aggregator_id_peer(struct lacp_peerinfo *lpi_aggr, 1355 const struct lacp_peerinfo *lpi_port) 1356{ 1357 memset(lpi_aggr, 0, sizeof(*lpi_aggr)); 1358 lpi_aggr->lip_systemid = lpi_port->lip_systemid; 1359 lpi_aggr->lip_key = lpi_port->lip_key; 1360} 1361 1362/* 1363 * lacp_aggregator_is_compatible: check if a port can join to an aggregator. 1364 */ 1365 1366static bool 1367lacp_aggregator_is_compatible(const struct lacp_aggregator *la, 1368 const struct lacp_port *lp) 1369{ 1370 if (!(lp->lp_state & LACP_STATE_AGGREGATION) || 1371 !(lp->lp_partner.lip_state & LACP_STATE_AGGREGATION)) { 1372 return (false); 1373 } 1374 1375 if (!(la->la_actor.lip_state & LACP_STATE_AGGREGATION)) 1376 return (false); 1377 1378 if (!lacp_peerinfo_is_compatible(&la->la_partner, &lp->lp_partner)) 1379 return (false); 1380 1381 if (!lacp_peerinfo_is_compatible(&la->la_actor, &lp->lp_actor)) 1382 return (false); 1383 1384 return (true); 1385} 1386 1387static bool 1388lacp_peerinfo_is_compatible(const struct lacp_peerinfo *a, 1389 const struct lacp_peerinfo *b) 1390{ 1391 if (memcmp(&a->lip_systemid, &b->lip_systemid, 1392 sizeof(a->lip_systemid)) != 0) { 1393 return (false); 1394 } 1395 1396 if (memcmp(&a->lip_key, &b->lip_key, sizeof(a->lip_key)) != 0) 1397 return (false); 1398 1399 return (true); 1400} 1401 1402static void 1403lacp_port_enable(struct lacp_port *lp) 1404{ 1405 lp->lp_state |= LACP_STATE_AGGREGATION; 1406} 1407 1408static void 1409lacp_port_disable(struct lacp_port *lp) 1410{ 1411 lacp_set_mux(lp, LACP_MUX_DETACHED); 1412 1413 lp->lp_state &= ~LACP_STATE_AGGREGATION; 1414 lp->lp_selected = LACP_UNSELECTED; 1415 lacp_sm_rx_record_default(lp); 1416 lp->lp_partner.lip_state &= ~LACP_STATE_AGGREGATION; 1417 lp->lp_state &= ~LACP_STATE_EXPIRED; 1418} 1419 1420/* 1421 * lacp_select: select an aggregator. create one if necessary. 1422 */ 1423static void 1424lacp_select(struct lacp_port *lp) 1425{ 1426 struct lacp_softc *lsc = lp->lp_lsc; 1427 struct lacp_aggregator *la; 1428 char buf[LACP_LAGIDSTR_MAX+1]; 1429 1430 if (lp->lp_aggregator) { 1431 return; 1432 } 1433 1434 /* If we haven't heard from our peer, skip this step. */ 1435 if (lp->lp_state & LACP_STATE_DEFAULTED) 1436 return; 1437 1438 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1439 ("timer_wait_while still active")); 1440 1441 LACP_DPRINTF((lp, "port lagid=%s\n", 1442 lacp_format_lagid(&lp->lp_actor, &lp->lp_partner, 1443 buf, sizeof(buf)))); 1444 1445 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 1446 if (lacp_aggregator_is_compatible(la, lp)) { 1447 break; 1448 } 1449 } 1450 1451 if (la == NULL) { 1452 la = lacp_aggregator_get(lsc, lp); 1453 if (la == NULL) { 1454 LACP_DPRINTF((lp, "aggregator creation failed\n")); 1455 1456 /* 1457 * will retry on the next tick. 1458 */ 1459 1460 return; 1461 } 1462 lacp_fill_aggregator_id(la, lp); 1463 LACP_DPRINTF((lp, "aggregator created\n")); 1464 } else { 1465 LACP_DPRINTF((lp, "compatible aggregator found\n")); 1466 if (la->la_refcnt == LACP_MAX_PORTS) 1467 return; 1468 lacp_aggregator_addref(lsc, la); 1469 } 1470 1471 LACP_DPRINTF((lp, "aggregator lagid=%s\n", 1472 lacp_format_lagid(&la->la_actor, &la->la_partner, 1473 buf, sizeof(buf)))); 1474 1475 lp->lp_aggregator = la; 1476 lp->lp_selected = LACP_SELECTED; 1477} 1478 1479/* 1480 * lacp_unselect: finish unselect/detach process. 1481 */ 1482 1483static void 1484lacp_unselect(struct lacp_port *lp) 1485{ 1486 struct lacp_softc *lsc = lp->lp_lsc; 1487 struct lacp_aggregator *la = lp->lp_aggregator; 1488 1489 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1490 ("timer_wait_while still active")); 1491 1492 if (la == NULL) { 1493 return; 1494 } 1495 1496 lp->lp_aggregator = NULL; 1497 lacp_aggregator_delref(lsc, la); 1498} 1499 1500/* mux machine */ 1501 1502static void 1503lacp_sm_mux(struct lacp_port *lp) 1504{ 1505 struct lagg_port *lgp = lp->lp_lagg; 1506 struct lagg_softc *sc = lgp->lp_softc; 1507 enum lacp_mux_state new_state; 1508 boolean_t p_sync = 1509 (lp->lp_partner.lip_state & LACP_STATE_SYNC) != 0; 1510 boolean_t p_collecting = 1511 (lp->lp_partner.lip_state & LACP_STATE_COLLECTING) != 0; 1512 enum lacp_selected selected = lp->lp_selected; 1513 struct lacp_aggregator *la; 1514 1515 if (V_lacp_debug > 1) 1516 lacp_dprintf(lp, "%s: state= 0x%x, selected= 0x%x, " 1517 "p_sync= 0x%x, p_collecting= 0x%x\n", __func__, 1518 lp->lp_mux_state, selected, p_sync, p_collecting); 1519 1520re_eval: 1521 la = lp->lp_aggregator; 1522 KASSERT(lp->lp_mux_state == LACP_MUX_DETACHED || la != NULL, 1523 ("MUX not detached")); 1524 new_state = lp->lp_mux_state; 1525 switch (lp->lp_mux_state) { 1526 case LACP_MUX_DETACHED: 1527 if (selected != LACP_UNSELECTED) { 1528 new_state = LACP_MUX_WAITING; 1529 } 1530 break; 1531 case LACP_MUX_WAITING: 1532 KASSERT(la->la_pending > 0 || 1533 !LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1534 ("timer_wait_while still active")); 1535 if (selected == LACP_SELECTED && la->la_pending == 0) { 1536 new_state = LACP_MUX_ATTACHED; 1537 } else if (selected == LACP_UNSELECTED) { 1538 new_state = LACP_MUX_DETACHED; 1539 } 1540 break; 1541 case LACP_MUX_ATTACHED: 1542 if (selected == LACP_SELECTED && p_sync) { 1543 new_state = LACP_MUX_COLLECTING; 1544 } else if (selected != LACP_SELECTED) { 1545 new_state = LACP_MUX_DETACHED; 1546 } 1547 break; 1548 case LACP_MUX_COLLECTING: 1549 if (selected == LACP_SELECTED && p_sync && p_collecting) { 1550 new_state = LACP_MUX_DISTRIBUTING; 1551 } else if (selected != LACP_SELECTED || !p_sync) { 1552 new_state = LACP_MUX_ATTACHED; 1553 } 1554 break; 1555 case LACP_MUX_DISTRIBUTING: 1556 if (selected != LACP_SELECTED || !p_sync || !p_collecting) { 1557 new_state = LACP_MUX_COLLECTING; 1558 lacp_dprintf(lp, "Interface stopped DISTRIBUTING, possible flapping\n"); 1559 sc->sc_flapping++; 1560 } 1561 break; 1562 default: 1563 panic("%s: unknown state", __func__); 1564 } 1565 1566 if (lp->lp_mux_state == new_state) { 1567 return; 1568 } 1569 1570 lacp_set_mux(lp, new_state); 1571 goto re_eval; 1572} 1573 1574static void 1575lacp_set_mux(struct lacp_port *lp, enum lacp_mux_state new_state) 1576{ 1577 struct lacp_aggregator *la = lp->lp_aggregator; 1578 1579 if (lp->lp_mux_state == new_state) { 1580 return; 1581 } 1582 1583 switch (new_state) { 1584 case LACP_MUX_DETACHED: 1585 lp->lp_state &= ~LACP_STATE_SYNC; 1586 lacp_disable_distributing(lp); 1587 lacp_disable_collecting(lp); 1588 lacp_sm_assert_ntt(lp); 1589 /* cancel timer */ 1590 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE)) { 1591 KASSERT(la->la_pending > 0, 1592 ("timer_wait_while not active")); 1593 la->la_pending--; 1594 } 1595 LACP_TIMER_DISARM(lp, LACP_TIMER_WAIT_WHILE); 1596 lacp_unselect(lp); 1597 break; 1598 case LACP_MUX_WAITING: 1599 LACP_TIMER_ARM(lp, LACP_TIMER_WAIT_WHILE, 1600 LACP_AGGREGATE_WAIT_TIME); 1601 la->la_pending++; 1602 break; 1603 case LACP_MUX_ATTACHED: 1604 lp->lp_state |= LACP_STATE_SYNC; 1605 lacp_disable_collecting(lp); 1606 lacp_sm_assert_ntt(lp); 1607 break; 1608 case LACP_MUX_COLLECTING: 1609 lacp_enable_collecting(lp); 1610 lacp_disable_distributing(lp); 1611 lacp_sm_assert_ntt(lp); 1612 break; 1613 case LACP_MUX_DISTRIBUTING: 1614 lacp_enable_distributing(lp); 1615 break; 1616 default: 1617 panic("%s: unknown state", __func__); 1618 } 1619 1620 LACP_DPRINTF((lp, "mux_state %d -> %d\n", lp->lp_mux_state, new_state)); 1621 1622 lp->lp_mux_state = new_state; 1623} 1624 1625static void 1626lacp_sm_mux_timer(struct lacp_port *lp) 1627{ 1628 struct lacp_aggregator *la = lp->lp_aggregator; 1629 char buf[LACP_LAGIDSTR_MAX+1]; 1630 1631 KASSERT(la->la_pending > 0, ("no pending event")); 1632 1633 LACP_DPRINTF((lp, "%s: aggregator %s, pending %d -> %d\n", __func__, 1634 lacp_format_lagid(&la->la_actor, &la->la_partner, 1635 buf, sizeof(buf)), 1636 la->la_pending, la->la_pending - 1)); 1637 1638 la->la_pending--; 1639} 1640 1641/* periodic transmit machine */ 1642 1643static void 1644lacp_sm_ptx_update_timeout(struct lacp_port *lp, uint8_t oldpstate) 1645{ 1646 if (LACP_STATE_EQ(oldpstate, lp->lp_partner.lip_state, 1647 LACP_STATE_TIMEOUT)) { 1648 return; 1649 } 1650 1651 LACP_DPRINTF((lp, "partner timeout changed\n")); 1652 1653 /* 1654 * FAST_PERIODIC -> SLOW_PERIODIC 1655 * or 1656 * SLOW_PERIODIC (-> PERIODIC_TX) -> FAST_PERIODIC 1657 * 1658 * let lacp_sm_ptx_tx_schedule to update timeout. 1659 */ 1660 1661 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1662 1663 /* 1664 * if timeout has been shortened, assert NTT. 1665 */ 1666 1667 if ((lp->lp_partner.lip_state & LACP_STATE_TIMEOUT)) { 1668 lacp_sm_assert_ntt(lp); 1669 } 1670} 1671 1672static void 1673lacp_sm_ptx_tx_schedule(struct lacp_port *lp) 1674{ 1675 int timeout; 1676 1677 if (!(lp->lp_state & LACP_STATE_ACTIVITY) && 1678 !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) { 1679 /* 1680 * NO_PERIODIC 1681 */ 1682 1683 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1684 return; 1685 } 1686 1687 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_PERIODIC)) { 1688 return; 1689 } 1690 1691 timeout = (lp->lp_partner.lip_state & LACP_STATE_TIMEOUT) ? 1692 LACP_FAST_PERIODIC_TIME : LACP_SLOW_PERIODIC_TIME; 1693 1694 LACP_TIMER_ARM(lp, LACP_TIMER_PERIODIC, timeout); 1695} 1696 1697static void 1698lacp_sm_ptx_timer(struct lacp_port *lp) 1699{ 1700 lacp_sm_assert_ntt(lp); 1701} 1702 1703static void 1704lacp_sm_rx(struct lacp_port *lp, const struct lacpdu *du) 1705{ 1706 int timeout; 1707 1708 /* 1709 * check LACP_DISABLED first 1710 */ 1711 1712 if (!(lp->lp_state & LACP_STATE_AGGREGATION)) { 1713 return; 1714 } 1715 1716 /* 1717 * check loopback condition. 1718 */ 1719 1720 if (!lacp_compare_systemid(&du->ldu_actor.lip_systemid, 1721 &lp->lp_actor.lip_systemid)) { 1722 return; 1723 } 1724 1725 /* 1726 * EXPIRED, DEFAULTED, CURRENT -> CURRENT 1727 */ 1728 1729 microuptime(&lp->lp_last_lacpdu_rx); 1730 lacp_sm_rx_update_selected(lp, du); 1731 lacp_sm_rx_update_ntt(lp, du); 1732 lacp_sm_rx_record_pdu(lp, du); 1733 1734 timeout = (lp->lp_state & LACP_STATE_TIMEOUT) ? 1735 LACP_SHORT_TIMEOUT_TIME : LACP_LONG_TIMEOUT_TIME; 1736 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, timeout); 1737 1738 lp->lp_state &= ~LACP_STATE_EXPIRED; 1739 1740 /* 1741 * kick transmit machine without waiting the next tick. 1742 */ 1743 1744 lacp_sm_tx(lp); 1745} 1746 1747static void 1748lacp_sm_rx_set_expired(struct lacp_port *lp) 1749{ 1750 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1751 lp->lp_partner.lip_state |= LACP_STATE_TIMEOUT; 1752 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, LACP_SHORT_TIMEOUT_TIME); 1753 lp->lp_state |= LACP_STATE_EXPIRED; 1754} 1755 1756static void 1757lacp_sm_rx_timer(struct lacp_port *lp) 1758{ 1759 if ((lp->lp_state & LACP_STATE_EXPIRED) == 0) { 1760 /* CURRENT -> EXPIRED */ 1761 LACP_DPRINTF((lp, "%s: CURRENT -> EXPIRED\n", __func__)); 1762 lacp_sm_rx_set_expired(lp); 1763 } else { 1764 /* EXPIRED -> DEFAULTED */ 1765 LACP_DPRINTF((lp, "%s: EXPIRED -> DEFAULTED\n", __func__)); 1766 lacp_sm_rx_update_default_selected(lp); 1767 lacp_sm_rx_record_default(lp); 1768 lp->lp_state &= ~LACP_STATE_EXPIRED; 1769 } 1770} 1771 1772static void 1773lacp_sm_rx_record_pdu(struct lacp_port *lp, const struct lacpdu *du) 1774{ 1775 boolean_t active; 1776 uint8_t oldpstate; 1777 char buf[LACP_STATESTR_MAX+1]; 1778 1779 LACP_TRACE(lp); 1780 1781 oldpstate = lp->lp_partner.lip_state; 1782 1783 active = (du->ldu_actor.lip_state & LACP_STATE_ACTIVITY) 1784 || ((lp->lp_state & LACP_STATE_ACTIVITY) && 1785 (du->ldu_partner.lip_state & LACP_STATE_ACTIVITY)); 1786 1787 lp->lp_partner = du->ldu_actor; 1788 if (active && 1789 ((LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1790 LACP_STATE_AGGREGATION) && 1791 !lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner)) 1792 || (du->ldu_partner.lip_state & LACP_STATE_AGGREGATION) == 0)) { 1793 /* 1794 * XXX Maintain legacy behavior of leaving the 1795 * LACP_STATE_SYNC bit unchanged from the partner's 1796 * advertisement if lsc_strict_mode is false. 1797 * TODO: We should re-examine the concept of the "strict mode" 1798 * to ensure it makes sense to maintain a non-strict mode. 1799 */ 1800 if (lp->lp_lsc->lsc_strict_mode) 1801 lp->lp_partner.lip_state |= LACP_STATE_SYNC; 1802 } else { 1803 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1804 } 1805 1806 lp->lp_state &= ~LACP_STATE_DEFAULTED; 1807 1808 if (oldpstate != lp->lp_partner.lip_state) { 1809 LACP_DPRINTF((lp, "old pstate %s\n", 1810 lacp_format_state(oldpstate, buf, sizeof(buf)))); 1811 LACP_DPRINTF((lp, "new pstate %s\n", 1812 lacp_format_state(lp->lp_partner.lip_state, buf, 1813 sizeof(buf)))); 1814 } 1815 1816 lacp_sm_ptx_update_timeout(lp, oldpstate); 1817} 1818 1819static void 1820lacp_sm_rx_update_ntt(struct lacp_port *lp, const struct lacpdu *du) 1821{ 1822 1823 LACP_TRACE(lp); 1824 1825 if (lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner) || 1826 !LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1827 LACP_STATE_ACTIVITY | LACP_STATE_SYNC | LACP_STATE_AGGREGATION)) { 1828 LACP_DPRINTF((lp, "%s: assert ntt\n", __func__)); 1829 lacp_sm_assert_ntt(lp); 1830 } 1831} 1832 1833static void 1834lacp_sm_rx_record_default(struct lacp_port *lp) 1835{ 1836 uint8_t oldpstate; 1837 1838 LACP_TRACE(lp); 1839 1840 oldpstate = lp->lp_partner.lip_state; 1841 if (lp->lp_lsc->lsc_strict_mode) 1842 lp->lp_partner = lacp_partner_admin_strict; 1843 else 1844 lp->lp_partner = lacp_partner_admin_optimistic; 1845 lp->lp_state |= LACP_STATE_DEFAULTED; 1846 lacp_sm_ptx_update_timeout(lp, oldpstate); 1847} 1848 1849static void 1850lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *lp, 1851 const struct lacp_peerinfo *info) 1852{ 1853 1854 LACP_TRACE(lp); 1855 1856 if (lacp_compare_peerinfo(&lp->lp_partner, info) || 1857 !LACP_STATE_EQ(lp->lp_partner.lip_state, info->lip_state, 1858 LACP_STATE_AGGREGATION)) { 1859 lp->lp_selected = LACP_UNSELECTED; 1860 /* mux machine will clean up lp->lp_aggregator */ 1861 } 1862} 1863 1864static void 1865lacp_sm_rx_update_selected(struct lacp_port *lp, const struct lacpdu *du) 1866{ 1867 1868 LACP_TRACE(lp); 1869 1870 lacp_sm_rx_update_selected_from_peerinfo(lp, &du->ldu_actor); 1871} 1872 1873static void 1874lacp_sm_rx_update_default_selected(struct lacp_port *lp) 1875{ 1876 1877 LACP_TRACE(lp); 1878 1879 if (lp->lp_lsc->lsc_strict_mode) 1880 lacp_sm_rx_update_selected_from_peerinfo(lp, 1881 &lacp_partner_admin_strict); 1882 else 1883 lacp_sm_rx_update_selected_from_peerinfo(lp, 1884 &lacp_partner_admin_optimistic); 1885} 1886 1887/* transmit machine */ 1888 1889static void 1890lacp_sm_tx(struct lacp_port *lp) 1891{ 1892 int error = 0; 1893 1894 if (!(lp->lp_state & LACP_STATE_AGGREGATION) 1895#if 1 1896 || (!(lp->lp_state & LACP_STATE_ACTIVITY) 1897 && !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) 1898#endif 1899 ) { 1900 lp->lp_flags &= ~LACP_PORT_NTT; 1901 } 1902 1903 if (!(lp->lp_flags & LACP_PORT_NTT)) { 1904 return; 1905 } 1906 1907 /* Rate limit to 3 PDUs per LACP_FAST_PERIODIC_TIME */ 1908 if (ppsratecheck(&lp->lp_last_lacpdu, &lp->lp_lacpdu_sent, 1909 (3 / LACP_FAST_PERIODIC_TIME)) == 0) { 1910 LACP_DPRINTF((lp, "rate limited pdu\n")); 1911 return; 1912 } 1913 1914 if (((1 << lp->lp_ifp->if_dunit) & lp->lp_lsc->lsc_debug.lsc_tx_test) == 0) { 1915 error = lacp_xmit_lacpdu(lp); 1916 } else { 1917 LACP_TPRINTF((lp, "Dropping TX PDU\n")); 1918 } 1919 1920 if (error == 0) { 1921 lp->lp_flags &= ~LACP_PORT_NTT; 1922 } else { 1923 LACP_DPRINTF((lp, "lacpdu transmit failure, error %d\n", 1924 error)); 1925 } 1926} 1927 1928static void 1929lacp_sm_assert_ntt(struct lacp_port *lp) 1930{ 1931 1932 lp->lp_flags |= LACP_PORT_NTT; 1933} 1934 1935static void 1936lacp_run_timers(struct lacp_port *lp) 1937{ 1938 int i; 1939 struct timeval time_diff; 1940 1941 for (i = 0; i < LACP_NTIMER; i++) { 1942 KASSERT(lp->lp_timer[i] >= 0, 1943 ("invalid timer value %d", lp->lp_timer[i])); 1944 if (lp->lp_timer[i] == 0) { 1945 continue; 1946 } else { 1947 if (i == LACP_TIMER_CURRENT_WHILE) { 1948 microuptime(&time_diff); 1949 timevalsub(&time_diff, &lp->lp_last_lacpdu_rx); 1950 if (time_diff.tv_sec) { 1951 /* At least one sec has elapsed since last LACP packet. */ 1952 --lp->lp_timer[i]; 1953 } 1954 } else { 1955 --lp->lp_timer[i]; 1956 } 1957 1958 if ((lp->lp_timer[i] <= 0) && (lacp_timer_funcs[i])) { 1959 (*lacp_timer_funcs[i])(lp); 1960 } 1961 } 1962 } 1963} 1964 1965int 1966lacp_marker_input(struct lacp_port *lp, struct mbuf *m) 1967{ 1968 struct lacp_softc *lsc = lp->lp_lsc; 1969 struct lagg_port *lgp = lp->lp_lagg; 1970 struct lacp_port *lp2; 1971 struct markerdu *mdu; 1972 int error = 0; 1973 int pending = 0; 1974 1975 if (m->m_pkthdr.len != sizeof(*mdu)) { 1976 goto bad; 1977 } 1978 1979 if ((m->m_flags & M_MCAST) == 0) { 1980 goto bad; 1981 } 1982 1983 if (m->m_len < sizeof(*mdu)) { 1984 m = m_pullup(m, sizeof(*mdu)); 1985 if (m == NULL) { 1986 return (ENOMEM); 1987 } 1988 } 1989 1990 mdu = mtod(m, struct markerdu *); 1991 1992 if (memcmp(&mdu->mdu_eh.ether_dhost, 1993 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 1994 goto bad; 1995 } 1996 1997 if (mdu->mdu_sph.sph_version != 1) { 1998 goto bad; 1999 } 2000 2001 switch (mdu->mdu_tlv.tlv_type) { 2002 case MARKER_TYPE_INFO: 2003 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 2004 marker_info_tlv_template, TRUE)) { 2005 goto bad; 2006 } 2007 mdu->mdu_tlv.tlv_type = MARKER_TYPE_RESPONSE; 2008 memcpy(&mdu->mdu_eh.ether_dhost, 2009 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN); 2010 memcpy(&mdu->mdu_eh.ether_shost, 2011 lgp->lp_lladdr, ETHER_ADDR_LEN); 2012 error = lagg_enqueue(lp->lp_ifp, m); 2013 break; 2014 2015 case MARKER_TYPE_RESPONSE: 2016 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 2017 marker_response_tlv_template, TRUE)) { 2018 goto bad; 2019 } 2020 LACP_DPRINTF((lp, "marker response, port=%u, sys=%6D, id=%u\n", 2021 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, 2022 ":", ntohl(mdu->mdu_info.mi_rq_xid))); 2023 2024 /* Verify that it is the last marker we sent out */ 2025 if (memcmp(&mdu->mdu_info, &lp->lp_marker, 2026 sizeof(struct lacp_markerinfo))) 2027 goto bad; 2028 2029 LACP_LOCK(lsc); 2030 lp->lp_flags &= ~LACP_PORT_MARK; 2031 2032 if (lsc->lsc_suppress_distributing) { 2033 /* Check if any ports are waiting for a response */ 2034 LIST_FOREACH(lp2, &lsc->lsc_ports, lp_next) { 2035 if (lp2->lp_flags & LACP_PORT_MARK) { 2036 pending = 1; 2037 break; 2038 } 2039 } 2040 2041 if (pending == 0) { 2042 /* All interface queues are clear */ 2043 LACP_DPRINTF((NULL, "queue flush complete\n")); 2044 lsc->lsc_suppress_distributing = FALSE; 2045 } 2046 } 2047 LACP_UNLOCK(lsc); 2048 m_freem(m); 2049 break; 2050 2051 default: 2052 goto bad; 2053 } 2054 2055 return (error); 2056 2057bad: 2058 LACP_DPRINTF((lp, "bad marker frame\n")); 2059 m_freem(m); 2060 return (EINVAL); 2061} 2062 2063static int 2064tlv_check(const void *p, size_t size, const struct tlvhdr *tlv, 2065 const struct tlv_template *tmpl, boolean_t check_type) 2066{ 2067 while (/* CONSTCOND */ 1) { 2068 if ((const char *)tlv - (const char *)p + sizeof(*tlv) > size) { 2069 return (EINVAL); 2070 } 2071 if ((check_type && tlv->tlv_type != tmpl->tmpl_type) || 2072 tlv->tlv_length != tmpl->tmpl_length) { 2073 return (EINVAL); 2074 } 2075 if (tmpl->tmpl_type == 0) { 2076 break; 2077 } 2078 tlv = (const struct tlvhdr *) 2079 ((const char *)tlv + tlv->tlv_length); 2080 tmpl++; 2081 } 2082 2083 return (0); 2084} 2085 2086/* Debugging */ 2087const char * 2088lacp_format_mac(const uint8_t *mac, char *buf, size_t buflen) 2089{ 2090 snprintf(buf, buflen, "%02X-%02X-%02X-%02X-%02X-%02X", 2091 (int)mac[0], 2092 (int)mac[1], 2093 (int)mac[2], 2094 (int)mac[3], 2095 (int)mac[4], 2096 (int)mac[5]); 2097 2098 return (buf); 2099} 2100 2101const char * 2102lacp_format_systemid(const struct lacp_systemid *sysid, 2103 char *buf, size_t buflen) 2104{ 2105 char macbuf[LACP_MACSTR_MAX+1]; 2106 2107 snprintf(buf, buflen, "%04X,%s", 2108 ntohs(sysid->lsi_prio), 2109 lacp_format_mac(sysid->lsi_mac, macbuf, sizeof(macbuf))); 2110 2111 return (buf); 2112} 2113 2114const char * 2115lacp_format_portid(const struct lacp_portid *portid, char *buf, size_t buflen) 2116{ 2117 snprintf(buf, buflen, "%04X,%04X", 2118 ntohs(portid->lpi_prio), 2119 ntohs(portid->lpi_portno)); 2120 2121 return (buf); 2122} 2123 2124const char * 2125lacp_format_partner(const struct lacp_peerinfo *peer, char *buf, size_t buflen) 2126{ 2127 char sysid[LACP_SYSTEMIDSTR_MAX+1]; 2128 char portid[LACP_PORTIDSTR_MAX+1]; 2129 2130 snprintf(buf, buflen, "(%s,%04X,%s)", 2131 lacp_format_systemid(&peer->lip_systemid, sysid, sizeof(sysid)), 2132 ntohs(peer->lip_key), 2133 lacp_format_portid(&peer->lip_portid, portid, sizeof(portid))); 2134 2135 return (buf); 2136} 2137 2138const char * 2139lacp_format_lagid(const struct lacp_peerinfo *a, 2140 const struct lacp_peerinfo *b, char *buf, size_t buflen) 2141{ 2142 char astr[LACP_PARTNERSTR_MAX+1]; 2143 char bstr[LACP_PARTNERSTR_MAX+1]; 2144 2145#if 0 2146 /* 2147 * there's a convention to display small numbered peer 2148 * in the left. 2149 */ 2150 2151 if (lacp_compare_peerinfo(a, b) > 0) { 2152 const struct lacp_peerinfo *t; 2153 2154 t = a; 2155 a = b; 2156 b = t; 2157 } 2158#endif 2159 2160 snprintf(buf, buflen, "[%s,%s]", 2161 lacp_format_partner(a, astr, sizeof(astr)), 2162 lacp_format_partner(b, bstr, sizeof(bstr))); 2163 2164 return (buf); 2165} 2166 2167const char * 2168lacp_format_lagid_aggregator(const struct lacp_aggregator *la, 2169 char *buf, size_t buflen) 2170{ 2171 if (la == NULL) { 2172 return ("(none)"); 2173 } 2174 2175 return (lacp_format_lagid(&la->la_actor, &la->la_partner, buf, buflen)); 2176} 2177 2178const char * 2179lacp_format_state(uint8_t state, char *buf, size_t buflen) 2180{ 2181 snprintf(buf, buflen, "%b", state, LACP_STATE_BITS); 2182 return (buf); 2183} 2184 2185static void 2186lacp_dump_lacpdu(const struct lacpdu *du) 2187{ 2188 char buf[LACP_PARTNERSTR_MAX+1]; 2189 char buf2[LACP_STATESTR_MAX+1]; 2190 2191 printf("actor=%s\n", 2192 lacp_format_partner(&du->ldu_actor, buf, sizeof(buf))); 2193 printf("actor.state=%s\n", 2194 lacp_format_state(du->ldu_actor.lip_state, buf2, sizeof(buf2))); 2195 printf("partner=%s\n", 2196 lacp_format_partner(&du->ldu_partner, buf, sizeof(buf))); 2197 printf("partner.state=%s\n", 2198 lacp_format_state(du->ldu_partner.lip_state, buf2, sizeof(buf2))); 2199 2200 printf("maxdelay=%d\n", ntohs(du->ldu_collector.lci_maxdelay)); 2201} 2202 2203static void 2204lacp_dprintf(const struct lacp_port *lp, const char *fmt, ...) 2205{ 2206 va_list va; 2207 2208 if (lp) { 2209 printf("%s: ", lp->lp_ifp->if_xname); 2210 } 2211 2212 va_start(va, fmt); 2213 vprintf(fmt, va); 2214 va_end(va); 2215} 2216