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-NetBSD 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 __FBSDID("$FreeBSD$"); 34 35 #include "opt_kern_tls.h" 36 #include "opt_ratelimit.h" 37 38 #include <sys/param.h> 39 #include <sys/callout.h> 40 #include <sys/eventhandler.h> 41 #include <sys/mbuf.h> 42 #include <sys/systm.h> 43 #include <sys/malloc.h> 44 #include <sys/kernel.h> /* hz */ 45 #include <sys/socket.h> /* for net/if.h */ 46 #include <sys/sockio.h> 47 #include <sys/sysctl.h> 48 #include <machine/stdarg.h> 49 #include <sys/lock.h> 50 #include <sys/rwlock.h> 51 #include <sys/taskqueue.h> 52 53 #include <net/if.h> 54 #include <net/if_var.h> 55 #include <net/if_dl.h> 56 #include <net/ethernet.h> 57 #include <net/if_media.h> 58 #include <net/if_types.h> 59 60 #include <net/if_lagg.h> 61 #include <net/ieee8023ad_lacp.h> 62 63 /* 64 * actor system priority and port priority. 65 * XXX should be configurable. 66 */ 67 68 #define LACP_SYSTEM_PRIO 0x8000 69 #define LACP_PORT_PRIO 0x8000 70 71 const uint8_t ethermulticastaddr_slowprotocols[ETHER_ADDR_LEN] = 72 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x02 }; 73 74 static const struct tlv_template lacp_info_tlv_template[] = { 75 { LACP_TYPE_ACTORINFO, 76 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) }, 77 { LACP_TYPE_PARTNERINFO, 78 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) }, 79 { LACP_TYPE_COLLECTORINFO, 80 sizeof(struct tlvhdr) + sizeof(struct lacp_collectorinfo) }, 81 { 0, 0 }, 82 }; 83 84 static const struct tlv_template marker_info_tlv_template[] = { 85 { MARKER_TYPE_INFO, 86 sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) }, 87 { 0, 0 }, 88 }; 89 90 static const struct tlv_template marker_response_tlv_template[] = { 91 { MARKER_TYPE_RESPONSE, 92 sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) }, 93 { 0, 0 }, 94 }; 95 96 typedef void (*lacp_timer_func_t)(struct lacp_port *); 97 98 static void lacp_fill_actorinfo(struct lacp_port *, struct lacp_peerinfo *); 99 static void lacp_fill_markerinfo(struct lacp_port *, 100 struct lacp_markerinfo *); 101 102 static uint64_t lacp_aggregator_bandwidth(struct lacp_aggregator *); 103 static void lacp_suppress_distributing(struct lacp_softc *, 104 struct lacp_aggregator *); 105 static void lacp_transit_expire(void *); 106 static void lacp_update_portmap(struct lacp_softc *); 107 static void lacp_select_active_aggregator(struct lacp_softc *); 108 static uint16_t lacp_compose_key(struct lacp_port *); 109 static int tlv_check(const void *, size_t, const struct tlvhdr *, 110 const struct tlv_template *, boolean_t); 111 static void lacp_tick(void *); 112 113 static void lacp_fill_aggregator_id(struct lacp_aggregator *, 114 const struct lacp_port *); 115 static void lacp_fill_aggregator_id_peer(struct lacp_peerinfo *, 116 const struct lacp_peerinfo *); 117 static int lacp_aggregator_is_compatible(const struct lacp_aggregator *, 118 const struct lacp_port *); 119 static int lacp_peerinfo_is_compatible(const struct lacp_peerinfo *, 120 const struct lacp_peerinfo *); 121 122 static struct lacp_aggregator *lacp_aggregator_get(struct lacp_softc *, 123 struct lacp_port *); 124 static void lacp_aggregator_addref(struct lacp_softc *, 125 struct lacp_aggregator *); 126 static void lacp_aggregator_delref(struct lacp_softc *, 127 struct lacp_aggregator *); 128 129 /* receive machine */ 130 131 static int lacp_pdu_input(struct lacp_port *, struct mbuf *); 132 static int lacp_marker_input(struct lacp_port *, struct mbuf *); 133 static void lacp_sm_rx(struct lacp_port *, const struct lacpdu *); 134 static void lacp_sm_rx_timer(struct lacp_port *); 135 static void lacp_sm_rx_set_expired(struct lacp_port *); 136 static void lacp_sm_rx_update_ntt(struct lacp_port *, 137 const struct lacpdu *); 138 static void lacp_sm_rx_record_pdu(struct lacp_port *, 139 const struct lacpdu *); 140 static void lacp_sm_rx_update_selected(struct lacp_port *, 141 const struct lacpdu *); 142 static void lacp_sm_rx_record_default(struct lacp_port *); 143 static void lacp_sm_rx_update_default_selected(struct lacp_port *); 144 static void lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *, 145 const struct lacp_peerinfo *); 146 147 /* mux machine */ 148 149 static void lacp_sm_mux(struct lacp_port *); 150 static void lacp_set_mux(struct lacp_port *, enum lacp_mux_state); 151 static void lacp_sm_mux_timer(struct lacp_port *); 152 153 /* periodic transmit machine */ 154 155 static void lacp_sm_ptx_update_timeout(struct lacp_port *, uint8_t); 156 static void lacp_sm_ptx_tx_schedule(struct lacp_port *); 157 static void lacp_sm_ptx_timer(struct lacp_port *); 158 159 /* transmit machine */ 160 161 static void lacp_sm_tx(struct lacp_port *); 162 static void lacp_sm_assert_ntt(struct lacp_port *); 163 164 static void lacp_run_timers(struct lacp_port *); 165 static int lacp_compare_peerinfo(const struct lacp_peerinfo *, 166 const struct lacp_peerinfo *); 167 static int lacp_compare_systemid(const struct lacp_systemid *, 168 const struct lacp_systemid *); 169 static void lacp_port_enable(struct lacp_port *); 170 static void lacp_port_disable(struct lacp_port *); 171 static void lacp_select(struct lacp_port *); 172 static void lacp_unselect(struct lacp_port *); 173 static void lacp_disable_collecting(struct lacp_port *); 174 static void lacp_enable_collecting(struct lacp_port *); 175 static void lacp_disable_distributing(struct lacp_port *); 176 static void lacp_enable_distributing(struct lacp_port *); 177 static int lacp_xmit_lacpdu(struct lacp_port *); 178 static int lacp_xmit_marker(struct lacp_port *); 179 180 /* Debugging */ 181 182 static void lacp_dump_lacpdu(const struct lacpdu *); 183 static const char *lacp_format_partner(const struct lacp_peerinfo *, char *, 184 size_t); 185 static const char *lacp_format_lagid(const struct lacp_peerinfo *, 186 const struct lacp_peerinfo *, char *, size_t); 187 static const char *lacp_format_lagid_aggregator(const struct lacp_aggregator *, 188 char *, size_t); 189 static const char *lacp_format_state(uint8_t, char *, size_t); 190 static const char *lacp_format_mac(const uint8_t *, char *, size_t); 191 static const char *lacp_format_systemid(const struct lacp_systemid *, char *, 192 size_t); 193 static const char *lacp_format_portid(const struct lacp_portid *, char *, 194 size_t); 195 static void lacp_dprintf(const struct lacp_port *, const char *, ...) 196 __attribute__((__format__(__printf__, 2, 3))); 197 198 VNET_DEFINE_STATIC(int, lacp_debug); 199 #define V_lacp_debug VNET(lacp_debug) 200 SYSCTL_NODE(_net_link_lagg, OID_AUTO, lacp, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 201 "ieee802.3ad"); 202 SYSCTL_INT(_net_link_lagg_lacp, OID_AUTO, debug, CTLFLAG_RWTUN | CTLFLAG_VNET, 203 &VNET_NAME(lacp_debug), 0, "Enable LACP debug logging (1=debug, 2=trace)"); 204 205 VNET_DEFINE_STATIC(int, lacp_default_strict_mode) = 1; 206 SYSCTL_INT(_net_link_lagg_lacp, OID_AUTO, default_strict_mode, 207 CTLFLAG_RWTUN | CTLFLAG_VNET, &VNET_NAME(lacp_default_strict_mode), 0, 208 "LACP strict protocol compliance default"); 209 210 #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 */ 218 219 static 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 }; 225 226 static 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 }; 231 232 static 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 }; 237 238 struct mbuf * 239 lacp_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 */ 267 static int 268 lacp_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); 331 332 bad: 333 m_freem(m); 334 return (EINVAL); 335 } 336 337 static void 338 lacp_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 } 350 351 static void 352 lacp_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 } 361 362 static int 363 lacp_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 } 415 416 static int 417 lacp_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 } 456 457 void 458 lacp_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 } 505 506 static void 507 lacp_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 } 527 528 int 529 lacp_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 } 575 576 void 577 lacp_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 } 601 602 void 603 lacp_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 } 640 641 void 642 lacp_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 } 666 667 static void 668 lacp_disable_collecting(struct lacp_port *lp) 669 { 670 LACP_DPRINTF((lp, "collecting disabled\n")); 671 lp->lp_state &= ~LACP_STATE_COLLECTING; 672 } 673 674 static void 675 lacp_enable_collecting(struct lacp_port *lp) 676 { 677 LACP_DPRINTF((lp, "collecting enabled\n")); 678 lp->lp_state |= LACP_STATE_COLLECTING; 679 } 680 681 static void 682 lacp_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 } 719 720 static void 721 lacp_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 } 756 757 static void 758 lacp_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 } 770 771 void 772 lacp_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 } 795 796 void 797 lacp_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 } 812 813 void 814 lacp_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 } 822 823 void 824 lacp_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 } 833 834 struct lagg_port * 835 lacp_select_tx_port_by_hash(struct lagg_softc *sc, uint32_t hash, uint8_t numa_domain) 836 { 837 struct lacp_softc *lsc = LACP_SOFTC(sc); 838 struct lacp_portmap *pm; 839 struct lacp_port *lp; 840 struct lacp_port **map; 841 int count; 842 843 if (__predict_false(lsc->lsc_suppress_distributing)) { 844 LACP_DPRINTF((NULL, "%s: waiting transit\n", __func__)); 845 return (NULL); 846 } 847 848 pm = &lsc->lsc_pmap[lsc->lsc_activemap]; 849 if (pm->pm_count == 0) { 850 LACP_DPRINTF((NULL, "%s: no active aggregator\n", __func__)); 851 return (NULL); 852 } 853 854 #ifdef NUMA 855 if ((sc->sc_opts & LAGG_OPT_USE_NUMA) && 856 pm->pm_num_dom > 1 && numa_domain < MAXMEMDOM) { 857 count = pm->pm_numa[numa_domain].count; 858 if (count > 0) { 859 map = pm->pm_numa[numa_domain].map; 860 } else { 861 /* No ports on this domain; use global hash. */ 862 map = pm->pm_map; 863 count = pm->pm_count; 864 } 865 } else 866 #endif 867 { 868 map = pm->pm_map; 869 count = pm->pm_count; 870 } 871 872 hash %= count; 873 lp = map[hash]; 874 875 KASSERT((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0, 876 ("aggregated port is not distributing")); 877 878 return (lp->lp_lagg); 879 } 880 881 struct lagg_port * 882 lacp_select_tx_port(struct lagg_softc *sc, struct mbuf *m) 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)); 896 } 897 898 /* 899 * lacp_suppress_distributing: drop transmit packets for a while 900 * to preserve packet ordering. 901 */ 902 903 static void 904 lacp_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 lacp_xmit_marker(lp); 920 } 921 922 /* set a timeout for the marker frames */ 923 callout_reset(&lsc->lsc_transit_callout, 924 LACP_TRANSIT_DELAY * hz / 1000, lacp_transit_expire, lsc); 925 } 926 927 static int 928 lacp_compare_peerinfo(const struct lacp_peerinfo *a, 929 const struct lacp_peerinfo *b) 930 { 931 return (memcmp(a, b, offsetof(struct lacp_peerinfo, lip_state))); 932 } 933 934 static int 935 lacp_compare_systemid(const struct lacp_systemid *a, 936 const struct lacp_systemid *b) 937 { 938 return (memcmp(a, b, sizeof(*a))); 939 } 940 941 #if 0 /* unused */ 942 static int 943 lacp_compare_portid(const struct lacp_portid *a, 944 const struct lacp_portid *b) 945 { 946 return (memcmp(a, b, sizeof(*a))); 947 } 948 #endif 949 950 static uint64_t 951 lacp_aggregator_bandwidth(struct lacp_aggregator *la) 952 { 953 struct lacp_port *lp; 954 uint64_t speed; 955 956 lp = TAILQ_FIRST(&la->la_ports); 957 if (lp == NULL) { 958 return (0); 959 } 960 961 speed = ifmedia_baudrate(lp->lp_media); 962 speed *= la->la_nports; 963 if (speed == 0) { 964 LACP_DPRINTF((lp, "speed 0? media=0x%x nports=%d\n", 965 lp->lp_media, la->la_nports)); 966 } 967 968 return (speed); 969 } 970 971 /* 972 * lacp_select_active_aggregator: select an aggregator to be used to transmit 973 * packets from lagg(4) interface. 974 */ 975 976 static void 977 lacp_select_active_aggregator(struct lacp_softc *lsc) 978 { 979 struct lacp_aggregator *la; 980 struct lacp_aggregator *best_la = NULL; 981 uint64_t best_speed = 0; 982 char buf[LACP_LAGIDSTR_MAX+1]; 983 984 LACP_TRACE(NULL); 985 986 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 987 uint64_t speed; 988 989 if (la->la_nports == 0) { 990 continue; 991 } 992 993 speed = lacp_aggregator_bandwidth(la); 994 LACP_DPRINTF((NULL, "%s, speed=%jd, nports=%d\n", 995 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 996 speed, la->la_nports)); 997 998 /* 999 * This aggregator is chosen if the partner has a better 1000 * system priority or, the total aggregated speed is higher 1001 * or, it is already the chosen aggregator 1002 */ 1003 if ((best_la != NULL && LACP_SYS_PRI(la->la_partner) < 1004 LACP_SYS_PRI(best_la->la_partner)) || 1005 speed > best_speed || 1006 (speed == best_speed && 1007 la == lsc->lsc_active_aggregator)) { 1008 best_la = la; 1009 best_speed = speed; 1010 } 1011 } 1012 1013 KASSERT(best_la == NULL || best_la->la_nports > 0, 1014 ("invalid aggregator refcnt")); 1015 KASSERT(best_la == NULL || !TAILQ_EMPTY(&best_la->la_ports), 1016 ("invalid aggregator list")); 1017 1018 if (lsc->lsc_active_aggregator != best_la) { 1019 LACP_DPRINTF((NULL, "active aggregator changed\n")); 1020 LACP_DPRINTF((NULL, "old %s\n", 1021 lacp_format_lagid_aggregator(lsc->lsc_active_aggregator, 1022 buf, sizeof(buf)))); 1023 } else { 1024 LACP_DPRINTF((NULL, "active aggregator not changed\n")); 1025 } 1026 LACP_DPRINTF((NULL, "new %s\n", 1027 lacp_format_lagid_aggregator(best_la, buf, sizeof(buf)))); 1028 1029 if (lsc->lsc_active_aggregator != best_la) { 1030 lsc->lsc_active_aggregator = best_la; 1031 lacp_update_portmap(lsc); 1032 if (best_la) { 1033 lacp_suppress_distributing(lsc, best_la); 1034 } 1035 } 1036 } 1037 1038 /* 1039 * Updated the inactive portmap array with the new list of ports and 1040 * make it live. 1041 */ 1042 static void 1043 lacp_update_portmap(struct lacp_softc *lsc) 1044 { 1045 struct lagg_softc *sc = lsc->lsc_softc; 1046 struct lacp_aggregator *la; 1047 struct lacp_portmap *p; 1048 struct lacp_port *lp; 1049 uint64_t speed; 1050 u_int newmap; 1051 int i; 1052 #ifdef NUMA 1053 int count; 1054 uint8_t domain; 1055 #endif 1056 1057 newmap = lsc->lsc_activemap == 0 ? 1 : 0; 1058 p = &lsc->lsc_pmap[newmap]; 1059 la = lsc->lsc_active_aggregator; 1060 speed = 0; 1061 bzero(p, sizeof(struct lacp_portmap)); 1062 1063 if (la != NULL && la->la_nports > 0) { 1064 p->pm_count = la->la_nports; 1065 i = 0; 1066 TAILQ_FOREACH(lp, &la->la_ports, lp_dist_q) { 1067 p->pm_map[i++] = lp; 1068 #ifdef NUMA 1069 domain = lp->lp_ifp->if_numa_domain; 1070 if (domain >= MAXMEMDOM) 1071 continue; 1072 count = p->pm_numa[domain].count; 1073 p->pm_numa[domain].map[count] = lp; 1074 p->pm_numa[domain].count++; 1075 #endif 1076 } 1077 KASSERT(i == p->pm_count, ("Invalid port count")); 1078 1079 #ifdef NUMA 1080 for (i = 0; i < MAXMEMDOM; i++) { 1081 if (p->pm_numa[i].count != 0) 1082 p->pm_num_dom++; 1083 } 1084 #endif 1085 speed = lacp_aggregator_bandwidth(la); 1086 } 1087 sc->sc_ifp->if_baudrate = speed; 1088 1089 /* switch the active portmap over */ 1090 atomic_store_rel_int(&lsc->lsc_activemap, newmap); 1091 LACP_DPRINTF((NULL, "Set table %d with %d ports\n", 1092 lsc->lsc_activemap, 1093 lsc->lsc_pmap[lsc->lsc_activemap].pm_count)); 1094 } 1095 1096 static uint16_t 1097 lacp_compose_key(struct lacp_port *lp) 1098 { 1099 struct lagg_port *lgp = lp->lp_lagg; 1100 struct lagg_softc *sc = lgp->lp_softc; 1101 u_int media = lp->lp_media; 1102 uint16_t key; 1103 1104 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) { 1105 1106 /* 1107 * non-aggregatable links should have unique keys. 1108 * 1109 * XXX this isn't really unique as if_index is 16 bit. 1110 */ 1111 1112 /* bit 0..14: (some bits of) if_index of this port */ 1113 key = lp->lp_ifp->if_index; 1114 /* bit 15: 1 */ 1115 key |= 0x8000; 1116 } else { 1117 u_int subtype = IFM_SUBTYPE(media); 1118 1119 KASSERT(IFM_TYPE(media) == IFM_ETHER, ("invalid media type")); 1120 KASSERT((media & IFM_FDX) != 0, ("aggregating HDX interface")); 1121 1122 /* bit 0..4: IFM_SUBTYPE modulo speed */ 1123 switch (subtype) { 1124 case IFM_10_T: 1125 case IFM_10_2: 1126 case IFM_10_5: 1127 case IFM_10_STP: 1128 case IFM_10_FL: 1129 key = IFM_10_T; 1130 break; 1131 case IFM_100_TX: 1132 case IFM_100_FX: 1133 case IFM_100_T4: 1134 case IFM_100_VG: 1135 case IFM_100_T2: 1136 case IFM_100_T: 1137 case IFM_100_SGMII: 1138 key = IFM_100_TX; 1139 break; 1140 case IFM_1000_SX: 1141 case IFM_1000_LX: 1142 case IFM_1000_CX: 1143 case IFM_1000_T: 1144 case IFM_1000_KX: 1145 case IFM_1000_SGMII: 1146 case IFM_1000_CX_SGMII: 1147 key = IFM_1000_SX; 1148 break; 1149 case IFM_10G_LR: 1150 case IFM_10G_SR: 1151 case IFM_10G_CX4: 1152 case IFM_10G_TWINAX: 1153 case IFM_10G_TWINAX_LONG: 1154 case IFM_10G_LRM: 1155 case IFM_10G_T: 1156 case IFM_10G_KX4: 1157 case IFM_10G_KR: 1158 case IFM_10G_CR1: 1159 case IFM_10G_ER: 1160 case IFM_10G_SFI: 1161 case IFM_10G_AOC: 1162 key = IFM_10G_LR; 1163 break; 1164 case IFM_20G_KR2: 1165 key = IFM_20G_KR2; 1166 break; 1167 case IFM_2500_KX: 1168 case IFM_2500_T: 1169 case IFM_2500_X: 1170 key = IFM_2500_KX; 1171 break; 1172 case IFM_5000_T: 1173 case IFM_5000_KR: 1174 case IFM_5000_KR_S: 1175 case IFM_5000_KR1: 1176 key = IFM_5000_T; 1177 break; 1178 case IFM_50G_PCIE: 1179 case IFM_50G_CR2: 1180 case IFM_50G_KR2: 1181 case IFM_50G_KR4: 1182 case IFM_50G_SR2: 1183 case IFM_50G_LR2: 1184 case IFM_50G_LAUI2_AC: 1185 case IFM_50G_LAUI2: 1186 case IFM_50G_AUI2_AC: 1187 case IFM_50G_AUI2: 1188 case IFM_50G_CP: 1189 case IFM_50G_SR: 1190 case IFM_50G_LR: 1191 case IFM_50G_FR: 1192 case IFM_50G_KR_PAM4: 1193 case IFM_50G_AUI1_AC: 1194 case IFM_50G_AUI1: 1195 key = IFM_50G_PCIE; 1196 break; 1197 case IFM_56G_R4: 1198 key = IFM_56G_R4; 1199 break; 1200 case IFM_25G_PCIE: 1201 case IFM_25G_CR: 1202 case IFM_25G_KR: 1203 case IFM_25G_SR: 1204 case IFM_25G_LR: 1205 case IFM_25G_ACC: 1206 case IFM_25G_AOC: 1207 case IFM_25G_T: 1208 case IFM_25G_CR_S: 1209 case IFM_25G_CR1: 1210 case IFM_25G_KR_S: 1211 case IFM_25G_AUI: 1212 case IFM_25G_KR1: 1213 key = IFM_25G_PCIE; 1214 break; 1215 case IFM_40G_CR4: 1216 case IFM_40G_SR4: 1217 case IFM_40G_LR4: 1218 case IFM_40G_XLPPI: 1219 case IFM_40G_KR4: 1220 case IFM_40G_XLAUI: 1221 case IFM_40G_XLAUI_AC: 1222 case IFM_40G_ER4: 1223 key = IFM_40G_CR4; 1224 break; 1225 case IFM_100G_CR4: 1226 case IFM_100G_SR4: 1227 case IFM_100G_KR4: 1228 case IFM_100G_LR4: 1229 case IFM_100G_CAUI4_AC: 1230 case IFM_100G_CAUI4: 1231 case IFM_100G_AUI4_AC: 1232 case IFM_100G_AUI4: 1233 case IFM_100G_CR_PAM4: 1234 case IFM_100G_KR_PAM4: 1235 case IFM_100G_CP2: 1236 case IFM_100G_SR2: 1237 case IFM_100G_DR: 1238 case IFM_100G_KR2_PAM4: 1239 case IFM_100G_CAUI2_AC: 1240 case IFM_100G_CAUI2: 1241 case IFM_100G_AUI2_AC: 1242 case IFM_100G_AUI2: 1243 key = IFM_100G_CR4; 1244 break; 1245 case IFM_200G_CR4_PAM4: 1246 case IFM_200G_SR4: 1247 case IFM_200G_FR4: 1248 case IFM_200G_LR4: 1249 case IFM_200G_DR4: 1250 case IFM_200G_KR4_PAM4: 1251 case IFM_200G_AUI4_AC: 1252 case IFM_200G_AUI4: 1253 case IFM_200G_AUI8_AC: 1254 case IFM_200G_AUI8: 1255 key = IFM_200G_CR4_PAM4; 1256 break; 1257 case IFM_400G_FR8: 1258 case IFM_400G_LR8: 1259 case IFM_400G_DR4: 1260 case IFM_400G_AUI8_AC: 1261 case IFM_400G_AUI8: 1262 key = IFM_400G_FR8; 1263 break; 1264 default: 1265 key = subtype; 1266 break; 1267 } 1268 /* bit 5..14: (some bits of) if_index of lagg device */ 1269 key |= 0x7fe0 & ((sc->sc_ifp->if_index) << 5); 1270 /* bit 15: 0 */ 1271 } 1272 return (htons(key)); 1273 } 1274 1275 static void 1276 lacp_aggregator_addref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1277 { 1278 char buf[LACP_LAGIDSTR_MAX+1]; 1279 1280 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1281 __func__, 1282 lacp_format_lagid(&la->la_actor, &la->la_partner, 1283 buf, sizeof(buf)), 1284 la->la_refcnt, la->la_refcnt + 1)); 1285 1286 KASSERT(la->la_refcnt > 0, ("refcount <= 0")); 1287 la->la_refcnt++; 1288 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcount")); 1289 } 1290 1291 static void 1292 lacp_aggregator_delref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1293 { 1294 char buf[LACP_LAGIDSTR_MAX+1]; 1295 1296 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1297 __func__, 1298 lacp_format_lagid(&la->la_actor, &la->la_partner, 1299 buf, sizeof(buf)), 1300 la->la_refcnt, la->la_refcnt - 1)); 1301 1302 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcnt")); 1303 la->la_refcnt--; 1304 if (la->la_refcnt > 0) { 1305 return; 1306 } 1307 1308 KASSERT(la->la_refcnt == 0, ("refcount not zero")); 1309 KASSERT(lsc->lsc_active_aggregator != la, ("aggregator active")); 1310 1311 TAILQ_REMOVE(&lsc->lsc_aggregators, la, la_q); 1312 1313 free(la, M_DEVBUF); 1314 } 1315 1316 /* 1317 * lacp_aggregator_get: allocate an aggregator. 1318 */ 1319 1320 static struct lacp_aggregator * 1321 lacp_aggregator_get(struct lacp_softc *lsc, struct lacp_port *lp) 1322 { 1323 struct lacp_aggregator *la; 1324 1325 la = malloc(sizeof(*la), M_DEVBUF, M_NOWAIT); 1326 if (la) { 1327 la->la_refcnt = 1; 1328 la->la_nports = 0; 1329 TAILQ_INIT(&la->la_ports); 1330 la->la_pending = 0; 1331 TAILQ_INSERT_TAIL(&lsc->lsc_aggregators, la, la_q); 1332 } 1333 1334 return (la); 1335 } 1336 1337 /* 1338 * lacp_fill_aggregator_id: setup a newly allocated aggregator from a port. 1339 */ 1340 1341 static void 1342 lacp_fill_aggregator_id(struct lacp_aggregator *la, const struct lacp_port *lp) 1343 { 1344 lacp_fill_aggregator_id_peer(&la->la_partner, &lp->lp_partner); 1345 lacp_fill_aggregator_id_peer(&la->la_actor, &lp->lp_actor); 1346 1347 la->la_actor.lip_state = lp->lp_state & LACP_STATE_AGGREGATION; 1348 } 1349 1350 static void 1351 lacp_fill_aggregator_id_peer(struct lacp_peerinfo *lpi_aggr, 1352 const struct lacp_peerinfo *lpi_port) 1353 { 1354 memset(lpi_aggr, 0, sizeof(*lpi_aggr)); 1355 lpi_aggr->lip_systemid = lpi_port->lip_systemid; 1356 lpi_aggr->lip_key = lpi_port->lip_key; 1357 } 1358 1359 /* 1360 * lacp_aggregator_is_compatible: check if a port can join to an aggregator. 1361 */ 1362 1363 static int 1364 lacp_aggregator_is_compatible(const struct lacp_aggregator *la, 1365 const struct lacp_port *lp) 1366 { 1367 if (!(lp->lp_state & LACP_STATE_AGGREGATION) || 1368 !(lp->lp_partner.lip_state & LACP_STATE_AGGREGATION)) { 1369 return (0); 1370 } 1371 1372 if (!(la->la_actor.lip_state & LACP_STATE_AGGREGATION)) { 1373 return (0); 1374 } 1375 1376 if (!lacp_peerinfo_is_compatible(&la->la_partner, &lp->lp_partner)) { 1377 return (0); 1378 } 1379 1380 if (!lacp_peerinfo_is_compatible(&la->la_actor, &lp->lp_actor)) { 1381 return (0); 1382 } 1383 1384 return (1); 1385 } 1386 1387 static int 1388 lacp_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))) { 1393 return (0); 1394 } 1395 1396 if (memcmp(&a->lip_key, &b->lip_key, sizeof(a->lip_key))) { 1397 return (0); 1398 } 1399 1400 return (1); 1401 } 1402 1403 static void 1404 lacp_port_enable(struct lacp_port *lp) 1405 { 1406 lp->lp_state |= LACP_STATE_AGGREGATION; 1407 } 1408 1409 static void 1410 lacp_port_disable(struct lacp_port *lp) 1411 { 1412 lacp_set_mux(lp, LACP_MUX_DETACHED); 1413 1414 lp->lp_state &= ~LACP_STATE_AGGREGATION; 1415 lp->lp_selected = LACP_UNSELECTED; 1416 lacp_sm_rx_record_default(lp); 1417 lp->lp_partner.lip_state &= ~LACP_STATE_AGGREGATION; 1418 lp->lp_state &= ~LACP_STATE_EXPIRED; 1419 } 1420 1421 /* 1422 * lacp_select: select an aggregator. create one if necessary. 1423 */ 1424 static void 1425 lacp_select(struct lacp_port *lp) 1426 { 1427 struct lacp_softc *lsc = lp->lp_lsc; 1428 struct lacp_aggregator *la; 1429 char buf[LACP_LAGIDSTR_MAX+1]; 1430 1431 if (lp->lp_aggregator) { 1432 return; 1433 } 1434 1435 /* If we haven't heard from our peer, skip this step. */ 1436 if (lp->lp_state & LACP_STATE_DEFAULTED) 1437 return; 1438 1439 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1440 ("timer_wait_while still active")); 1441 1442 LACP_DPRINTF((lp, "port lagid=%s\n", 1443 lacp_format_lagid(&lp->lp_actor, &lp->lp_partner, 1444 buf, sizeof(buf)))); 1445 1446 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 1447 if (lacp_aggregator_is_compatible(la, lp)) { 1448 break; 1449 } 1450 } 1451 1452 if (la == NULL) { 1453 la = lacp_aggregator_get(lsc, lp); 1454 if (la == NULL) { 1455 LACP_DPRINTF((lp, "aggregator creation failed\n")); 1456 1457 /* 1458 * will retry on the next tick. 1459 */ 1460 1461 return; 1462 } 1463 lacp_fill_aggregator_id(la, lp); 1464 LACP_DPRINTF((lp, "aggregator created\n")); 1465 } else { 1466 LACP_DPRINTF((lp, "compatible aggregator found\n")); 1467 if (la->la_refcnt == LACP_MAX_PORTS) 1468 return; 1469 lacp_aggregator_addref(lsc, la); 1470 } 1471 1472 LACP_DPRINTF((lp, "aggregator lagid=%s\n", 1473 lacp_format_lagid(&la->la_actor, &la->la_partner, 1474 buf, sizeof(buf)))); 1475 1476 lp->lp_aggregator = la; 1477 lp->lp_selected = LACP_SELECTED; 1478 } 1479 1480 /* 1481 * lacp_unselect: finish unselect/detach process. 1482 */ 1483 1484 static void 1485 lacp_unselect(struct lacp_port *lp) 1486 { 1487 struct lacp_softc *lsc = lp->lp_lsc; 1488 struct lacp_aggregator *la = lp->lp_aggregator; 1489 1490 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1491 ("timer_wait_while still active")); 1492 1493 if (la == NULL) { 1494 return; 1495 } 1496 1497 lp->lp_aggregator = NULL; 1498 lacp_aggregator_delref(lsc, la); 1499 } 1500 1501 /* mux machine */ 1502 1503 static void 1504 lacp_sm_mux(struct lacp_port *lp) 1505 { 1506 struct lagg_port *lgp = lp->lp_lagg; 1507 struct lagg_softc *sc = lgp->lp_softc; 1508 enum lacp_mux_state new_state; 1509 boolean_t p_sync = 1510 (lp->lp_partner.lip_state & LACP_STATE_SYNC) != 0; 1511 boolean_t p_collecting = 1512 (lp->lp_partner.lip_state & LACP_STATE_COLLECTING) != 0; 1513 enum lacp_selected selected = lp->lp_selected; 1514 struct lacp_aggregator *la; 1515 1516 if (V_lacp_debug > 1) 1517 lacp_dprintf(lp, "%s: state= 0x%x, selected= 0x%x, " 1518 "p_sync= 0x%x, p_collecting= 0x%x\n", __func__, 1519 lp->lp_mux_state, selected, p_sync, p_collecting); 1520 1521 re_eval: 1522 la = lp->lp_aggregator; 1523 KASSERT(lp->lp_mux_state == LACP_MUX_DETACHED || la != NULL, 1524 ("MUX not detached")); 1525 new_state = lp->lp_mux_state; 1526 switch (lp->lp_mux_state) { 1527 case LACP_MUX_DETACHED: 1528 if (selected != LACP_UNSELECTED) { 1529 new_state = LACP_MUX_WAITING; 1530 } 1531 break; 1532 case LACP_MUX_WAITING: 1533 KASSERT(la->la_pending > 0 || 1534 !LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1535 ("timer_wait_while still active")); 1536 if (selected == LACP_SELECTED && la->la_pending == 0) { 1537 new_state = LACP_MUX_ATTACHED; 1538 } else if (selected == LACP_UNSELECTED) { 1539 new_state = LACP_MUX_DETACHED; 1540 } 1541 break; 1542 case LACP_MUX_ATTACHED: 1543 if (selected == LACP_SELECTED && p_sync) { 1544 new_state = LACP_MUX_COLLECTING; 1545 } else if (selected != LACP_SELECTED) { 1546 new_state = LACP_MUX_DETACHED; 1547 } 1548 break; 1549 case LACP_MUX_COLLECTING: 1550 if (selected == LACP_SELECTED && p_sync && p_collecting) { 1551 new_state = LACP_MUX_DISTRIBUTING; 1552 } else if (selected != LACP_SELECTED || !p_sync) { 1553 new_state = LACP_MUX_ATTACHED; 1554 } 1555 break; 1556 case LACP_MUX_DISTRIBUTING: 1557 if (selected != LACP_SELECTED || !p_sync || !p_collecting) { 1558 new_state = LACP_MUX_COLLECTING; 1559 lacp_dprintf(lp, "Interface stopped DISTRIBUTING, possible flapping\n"); 1560 sc->sc_flapping++; 1561 } 1562 break; 1563 default: 1564 panic("%s: unknown state", __func__); 1565 } 1566 1567 if (lp->lp_mux_state == new_state) { 1568 return; 1569 } 1570 1571 lacp_set_mux(lp, new_state); 1572 goto re_eval; 1573 } 1574 1575 static void 1576 lacp_set_mux(struct lacp_port *lp, enum lacp_mux_state new_state) 1577 { 1578 struct lacp_aggregator *la = lp->lp_aggregator; 1579 1580 if (lp->lp_mux_state == new_state) { 1581 return; 1582 } 1583 1584 switch (new_state) { 1585 case LACP_MUX_DETACHED: 1586 lp->lp_state &= ~LACP_STATE_SYNC; 1587 lacp_disable_distributing(lp); 1588 lacp_disable_collecting(lp); 1589 lacp_sm_assert_ntt(lp); 1590 /* cancel timer */ 1591 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE)) { 1592 KASSERT(la->la_pending > 0, 1593 ("timer_wait_while not active")); 1594 la->la_pending--; 1595 } 1596 LACP_TIMER_DISARM(lp, LACP_TIMER_WAIT_WHILE); 1597 lacp_unselect(lp); 1598 break; 1599 case LACP_MUX_WAITING: 1600 LACP_TIMER_ARM(lp, LACP_TIMER_WAIT_WHILE, 1601 LACP_AGGREGATE_WAIT_TIME); 1602 la->la_pending++; 1603 break; 1604 case LACP_MUX_ATTACHED: 1605 lp->lp_state |= LACP_STATE_SYNC; 1606 lacp_disable_collecting(lp); 1607 lacp_sm_assert_ntt(lp); 1608 break; 1609 case LACP_MUX_COLLECTING: 1610 lacp_enable_collecting(lp); 1611 lacp_disable_distributing(lp); 1612 lacp_sm_assert_ntt(lp); 1613 break; 1614 case LACP_MUX_DISTRIBUTING: 1615 lacp_enable_distributing(lp); 1616 break; 1617 default: 1618 panic("%s: unknown state", __func__); 1619 } 1620 1621 LACP_DPRINTF((lp, "mux_state %d -> %d\n", lp->lp_mux_state, new_state)); 1622 1623 lp->lp_mux_state = new_state; 1624 } 1625 1626 static void 1627 lacp_sm_mux_timer(struct lacp_port *lp) 1628 { 1629 struct lacp_aggregator *la = lp->lp_aggregator; 1630 char buf[LACP_LAGIDSTR_MAX+1]; 1631 1632 KASSERT(la->la_pending > 0, ("no pending event")); 1633 1634 LACP_DPRINTF((lp, "%s: aggregator %s, pending %d -> %d\n", __func__, 1635 lacp_format_lagid(&la->la_actor, &la->la_partner, 1636 buf, sizeof(buf)), 1637 la->la_pending, la->la_pending - 1)); 1638 1639 la->la_pending--; 1640 } 1641 1642 /* periodic transmit machine */ 1643 1644 static void 1645 lacp_sm_ptx_update_timeout(struct lacp_port *lp, uint8_t oldpstate) 1646 { 1647 if (LACP_STATE_EQ(oldpstate, lp->lp_partner.lip_state, 1648 LACP_STATE_TIMEOUT)) { 1649 return; 1650 } 1651 1652 LACP_DPRINTF((lp, "partner timeout changed\n")); 1653 1654 /* 1655 * FAST_PERIODIC -> SLOW_PERIODIC 1656 * or 1657 * SLOW_PERIODIC (-> PERIODIC_TX) -> FAST_PERIODIC 1658 * 1659 * let lacp_sm_ptx_tx_schedule to update timeout. 1660 */ 1661 1662 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1663 1664 /* 1665 * if timeout has been shortened, assert NTT. 1666 */ 1667 1668 if ((lp->lp_partner.lip_state & LACP_STATE_TIMEOUT)) { 1669 lacp_sm_assert_ntt(lp); 1670 } 1671 } 1672 1673 static void 1674 lacp_sm_ptx_tx_schedule(struct lacp_port *lp) 1675 { 1676 int timeout; 1677 1678 if (!(lp->lp_state & LACP_STATE_ACTIVITY) && 1679 !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) { 1680 1681 /* 1682 * NO_PERIODIC 1683 */ 1684 1685 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1686 return; 1687 } 1688 1689 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_PERIODIC)) { 1690 return; 1691 } 1692 1693 timeout = (lp->lp_partner.lip_state & LACP_STATE_TIMEOUT) ? 1694 LACP_FAST_PERIODIC_TIME : LACP_SLOW_PERIODIC_TIME; 1695 1696 LACP_TIMER_ARM(lp, LACP_TIMER_PERIODIC, timeout); 1697 } 1698 1699 static void 1700 lacp_sm_ptx_timer(struct lacp_port *lp) 1701 { 1702 lacp_sm_assert_ntt(lp); 1703 } 1704 1705 static void 1706 lacp_sm_rx(struct lacp_port *lp, const struct lacpdu *du) 1707 { 1708 int timeout; 1709 1710 /* 1711 * check LACP_DISABLED first 1712 */ 1713 1714 if (!(lp->lp_state & LACP_STATE_AGGREGATION)) { 1715 return; 1716 } 1717 1718 /* 1719 * check loopback condition. 1720 */ 1721 1722 if (!lacp_compare_systemid(&du->ldu_actor.lip_systemid, 1723 &lp->lp_actor.lip_systemid)) { 1724 return; 1725 } 1726 1727 /* 1728 * EXPIRED, DEFAULTED, CURRENT -> CURRENT 1729 */ 1730 1731 lacp_sm_rx_update_selected(lp, du); 1732 lacp_sm_rx_update_ntt(lp, du); 1733 lacp_sm_rx_record_pdu(lp, du); 1734 1735 timeout = (lp->lp_state & LACP_STATE_TIMEOUT) ? 1736 LACP_SHORT_TIMEOUT_TIME : LACP_LONG_TIMEOUT_TIME; 1737 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, timeout); 1738 1739 lp->lp_state &= ~LACP_STATE_EXPIRED; 1740 1741 /* 1742 * kick transmit machine without waiting the next tick. 1743 */ 1744 1745 lacp_sm_tx(lp); 1746 } 1747 1748 static void 1749 lacp_sm_rx_set_expired(struct lacp_port *lp) 1750 { 1751 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1752 lp->lp_partner.lip_state |= LACP_STATE_TIMEOUT; 1753 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, LACP_SHORT_TIMEOUT_TIME); 1754 lp->lp_state |= LACP_STATE_EXPIRED; 1755 } 1756 1757 static void 1758 lacp_sm_rx_timer(struct lacp_port *lp) 1759 { 1760 if ((lp->lp_state & LACP_STATE_EXPIRED) == 0) { 1761 /* CURRENT -> EXPIRED */ 1762 LACP_DPRINTF((lp, "%s: CURRENT -> EXPIRED\n", __func__)); 1763 lacp_sm_rx_set_expired(lp); 1764 } else { 1765 /* EXPIRED -> DEFAULTED */ 1766 LACP_DPRINTF((lp, "%s: EXPIRED -> DEFAULTED\n", __func__)); 1767 lacp_sm_rx_update_default_selected(lp); 1768 lacp_sm_rx_record_default(lp); 1769 lp->lp_state &= ~LACP_STATE_EXPIRED; 1770 } 1771 } 1772 1773 static void 1774 lacp_sm_rx_record_pdu(struct lacp_port *lp, const struct lacpdu *du) 1775 { 1776 boolean_t active; 1777 uint8_t oldpstate; 1778 char buf[LACP_STATESTR_MAX+1]; 1779 1780 LACP_TRACE(lp); 1781 1782 oldpstate = lp->lp_partner.lip_state; 1783 1784 active = (du->ldu_actor.lip_state & LACP_STATE_ACTIVITY) 1785 || ((lp->lp_state & LACP_STATE_ACTIVITY) && 1786 (du->ldu_partner.lip_state & LACP_STATE_ACTIVITY)); 1787 1788 lp->lp_partner = du->ldu_actor; 1789 if (active && 1790 ((LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1791 LACP_STATE_AGGREGATION) && 1792 !lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner)) 1793 || (du->ldu_partner.lip_state & LACP_STATE_AGGREGATION) == 0)) { 1794 /* 1795 * XXX Maintain legacy behavior of leaving the 1796 * LACP_STATE_SYNC bit unchanged from the partner's 1797 * advertisement if lsc_strict_mode is false. 1798 * TODO: We should re-examine the concept of the "strict mode" 1799 * to ensure it makes sense to maintain a non-strict mode. 1800 */ 1801 if (lp->lp_lsc->lsc_strict_mode) 1802 lp->lp_partner.lip_state |= LACP_STATE_SYNC; 1803 } else { 1804 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1805 } 1806 1807 lp->lp_state &= ~LACP_STATE_DEFAULTED; 1808 1809 if (oldpstate != lp->lp_partner.lip_state) { 1810 LACP_DPRINTF((lp, "old pstate %s\n", 1811 lacp_format_state(oldpstate, buf, sizeof(buf)))); 1812 LACP_DPRINTF((lp, "new pstate %s\n", 1813 lacp_format_state(lp->lp_partner.lip_state, buf, 1814 sizeof(buf)))); 1815 } 1816 1817 lacp_sm_ptx_update_timeout(lp, oldpstate); 1818 } 1819 1820 static void 1821 lacp_sm_rx_update_ntt(struct lacp_port *lp, const struct lacpdu *du) 1822 { 1823 1824 LACP_TRACE(lp); 1825 1826 if (lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner) || 1827 !LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1828 LACP_STATE_ACTIVITY | LACP_STATE_SYNC | LACP_STATE_AGGREGATION)) { 1829 LACP_DPRINTF((lp, "%s: assert ntt\n", __func__)); 1830 lacp_sm_assert_ntt(lp); 1831 } 1832 } 1833 1834 static void 1835 lacp_sm_rx_record_default(struct lacp_port *lp) 1836 { 1837 uint8_t oldpstate; 1838 1839 LACP_TRACE(lp); 1840 1841 oldpstate = lp->lp_partner.lip_state; 1842 if (lp->lp_lsc->lsc_strict_mode) 1843 lp->lp_partner = lacp_partner_admin_strict; 1844 else 1845 lp->lp_partner = lacp_partner_admin_optimistic; 1846 lp->lp_state |= LACP_STATE_DEFAULTED; 1847 lacp_sm_ptx_update_timeout(lp, oldpstate); 1848 } 1849 1850 static void 1851 lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *lp, 1852 const struct lacp_peerinfo *info) 1853 { 1854 1855 LACP_TRACE(lp); 1856 1857 if (lacp_compare_peerinfo(&lp->lp_partner, info) || 1858 !LACP_STATE_EQ(lp->lp_partner.lip_state, info->lip_state, 1859 LACP_STATE_AGGREGATION)) { 1860 lp->lp_selected = LACP_UNSELECTED; 1861 /* mux machine will clean up lp->lp_aggregator */ 1862 } 1863 } 1864 1865 static void 1866 lacp_sm_rx_update_selected(struct lacp_port *lp, const struct lacpdu *du) 1867 { 1868 1869 LACP_TRACE(lp); 1870 1871 lacp_sm_rx_update_selected_from_peerinfo(lp, &du->ldu_actor); 1872 } 1873 1874 static void 1875 lacp_sm_rx_update_default_selected(struct lacp_port *lp) 1876 { 1877 1878 LACP_TRACE(lp); 1879 1880 if (lp->lp_lsc->lsc_strict_mode) 1881 lacp_sm_rx_update_selected_from_peerinfo(lp, 1882 &lacp_partner_admin_strict); 1883 else 1884 lacp_sm_rx_update_selected_from_peerinfo(lp, 1885 &lacp_partner_admin_optimistic); 1886 } 1887 1888 /* transmit machine */ 1889 1890 static void 1891 lacp_sm_tx(struct lacp_port *lp) 1892 { 1893 int error = 0; 1894 1895 if (!(lp->lp_state & LACP_STATE_AGGREGATION) 1896 #if 1 1897 || (!(lp->lp_state & LACP_STATE_ACTIVITY) 1898 && !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) 1899 #endif 1900 ) { 1901 lp->lp_flags &= ~LACP_PORT_NTT; 1902 } 1903 1904 if (!(lp->lp_flags & LACP_PORT_NTT)) { 1905 return; 1906 } 1907 1908 /* Rate limit to 3 PDUs per LACP_FAST_PERIODIC_TIME */ 1909 if (ppsratecheck(&lp->lp_last_lacpdu, &lp->lp_lacpdu_sent, 1910 (3 / LACP_FAST_PERIODIC_TIME)) == 0) { 1911 LACP_DPRINTF((lp, "rate limited pdu\n")); 1912 return; 1913 } 1914 1915 if (((1 << lp->lp_ifp->if_dunit) & lp->lp_lsc->lsc_debug.lsc_tx_test) == 0) { 1916 error = lacp_xmit_lacpdu(lp); 1917 } else { 1918 LACP_TPRINTF((lp, "Dropping TX PDU\n")); 1919 } 1920 1921 if (error == 0) { 1922 lp->lp_flags &= ~LACP_PORT_NTT; 1923 } else { 1924 LACP_DPRINTF((lp, "lacpdu transmit failure, error %d\n", 1925 error)); 1926 } 1927 } 1928 1929 static void 1930 lacp_sm_assert_ntt(struct lacp_port *lp) 1931 { 1932 1933 lp->lp_flags |= LACP_PORT_NTT; 1934 } 1935 1936 static void 1937 lacp_run_timers(struct lacp_port *lp) 1938 { 1939 int i; 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 if (--lp->lp_timer[i] <= 0) { 1947 if (lacp_timer_funcs[i]) { 1948 (*lacp_timer_funcs[i])(lp); 1949 } 1950 } 1951 } 1952 } 1953 1954 int 1955 lacp_marker_input(struct lacp_port *lp, struct mbuf *m) 1956 { 1957 struct lacp_softc *lsc = lp->lp_lsc; 1958 struct lagg_port *lgp = lp->lp_lagg; 1959 struct lacp_port *lp2; 1960 struct markerdu *mdu; 1961 int error = 0; 1962 int pending = 0; 1963 1964 if (m->m_pkthdr.len != sizeof(*mdu)) { 1965 goto bad; 1966 } 1967 1968 if ((m->m_flags & M_MCAST) == 0) { 1969 goto bad; 1970 } 1971 1972 if (m->m_len < sizeof(*mdu)) { 1973 m = m_pullup(m, sizeof(*mdu)); 1974 if (m == NULL) { 1975 return (ENOMEM); 1976 } 1977 } 1978 1979 mdu = mtod(m, struct markerdu *); 1980 1981 if (memcmp(&mdu->mdu_eh.ether_dhost, 1982 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 1983 goto bad; 1984 } 1985 1986 if (mdu->mdu_sph.sph_version != 1) { 1987 goto bad; 1988 } 1989 1990 switch (mdu->mdu_tlv.tlv_type) { 1991 case MARKER_TYPE_INFO: 1992 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 1993 marker_info_tlv_template, TRUE)) { 1994 goto bad; 1995 } 1996 mdu->mdu_tlv.tlv_type = MARKER_TYPE_RESPONSE; 1997 memcpy(&mdu->mdu_eh.ether_dhost, 1998 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN); 1999 memcpy(&mdu->mdu_eh.ether_shost, 2000 lgp->lp_lladdr, ETHER_ADDR_LEN); 2001 error = lagg_enqueue(lp->lp_ifp, m); 2002 break; 2003 2004 case MARKER_TYPE_RESPONSE: 2005 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 2006 marker_response_tlv_template, TRUE)) { 2007 goto bad; 2008 } 2009 LACP_DPRINTF((lp, "marker response, port=%u, sys=%6D, id=%u\n", 2010 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, 2011 ":", ntohl(mdu->mdu_info.mi_rq_xid))); 2012 2013 /* Verify that it is the last marker we sent out */ 2014 if (memcmp(&mdu->mdu_info, &lp->lp_marker, 2015 sizeof(struct lacp_markerinfo))) 2016 goto bad; 2017 2018 LACP_LOCK(lsc); 2019 lp->lp_flags &= ~LACP_PORT_MARK; 2020 2021 if (lsc->lsc_suppress_distributing) { 2022 /* Check if any ports are waiting for a response */ 2023 LIST_FOREACH(lp2, &lsc->lsc_ports, lp_next) { 2024 if (lp2->lp_flags & LACP_PORT_MARK) { 2025 pending = 1; 2026 break; 2027 } 2028 } 2029 2030 if (pending == 0) { 2031 /* All interface queues are clear */ 2032 LACP_DPRINTF((NULL, "queue flush complete\n")); 2033 lsc->lsc_suppress_distributing = FALSE; 2034 } 2035 } 2036 LACP_UNLOCK(lsc); 2037 m_freem(m); 2038 break; 2039 2040 default: 2041 goto bad; 2042 } 2043 2044 return (error); 2045 2046 bad: 2047 LACP_DPRINTF((lp, "bad marker frame\n")); 2048 m_freem(m); 2049 return (EINVAL); 2050 } 2051 2052 static int 2053 tlv_check(const void *p, size_t size, const struct tlvhdr *tlv, 2054 const struct tlv_template *tmpl, boolean_t check_type) 2055 { 2056 while (/* CONSTCOND */ 1) { 2057 if ((const char *)tlv - (const char *)p + sizeof(*tlv) > size) { 2058 return (EINVAL); 2059 } 2060 if ((check_type && tlv->tlv_type != tmpl->tmpl_type) || 2061 tlv->tlv_length != tmpl->tmpl_length) { 2062 return (EINVAL); 2063 } 2064 if (tmpl->tmpl_type == 0) { 2065 break; 2066 } 2067 tlv = (const struct tlvhdr *) 2068 ((const char *)tlv + tlv->tlv_length); 2069 tmpl++; 2070 } 2071 2072 return (0); 2073 } 2074 2075 /* Debugging */ 2076 const char * 2077 lacp_format_mac(const uint8_t *mac, char *buf, size_t buflen) 2078 { 2079 snprintf(buf, buflen, "%02X-%02X-%02X-%02X-%02X-%02X", 2080 (int)mac[0], 2081 (int)mac[1], 2082 (int)mac[2], 2083 (int)mac[3], 2084 (int)mac[4], 2085 (int)mac[5]); 2086 2087 return (buf); 2088 } 2089 2090 const char * 2091 lacp_format_systemid(const struct lacp_systemid *sysid, 2092 char *buf, size_t buflen) 2093 { 2094 char macbuf[LACP_MACSTR_MAX+1]; 2095 2096 snprintf(buf, buflen, "%04X,%s", 2097 ntohs(sysid->lsi_prio), 2098 lacp_format_mac(sysid->lsi_mac, macbuf, sizeof(macbuf))); 2099 2100 return (buf); 2101 } 2102 2103 const char * 2104 lacp_format_portid(const struct lacp_portid *portid, char *buf, size_t buflen) 2105 { 2106 snprintf(buf, buflen, "%04X,%04X", 2107 ntohs(portid->lpi_prio), 2108 ntohs(portid->lpi_portno)); 2109 2110 return (buf); 2111 } 2112 2113 const char * 2114 lacp_format_partner(const struct lacp_peerinfo *peer, char *buf, size_t buflen) 2115 { 2116 char sysid[LACP_SYSTEMIDSTR_MAX+1]; 2117 char portid[LACP_PORTIDSTR_MAX+1]; 2118 2119 snprintf(buf, buflen, "(%s,%04X,%s)", 2120 lacp_format_systemid(&peer->lip_systemid, sysid, sizeof(sysid)), 2121 ntohs(peer->lip_key), 2122 lacp_format_portid(&peer->lip_portid, portid, sizeof(portid))); 2123 2124 return (buf); 2125 } 2126 2127 const char * 2128 lacp_format_lagid(const struct lacp_peerinfo *a, 2129 const struct lacp_peerinfo *b, char *buf, size_t buflen) 2130 { 2131 char astr[LACP_PARTNERSTR_MAX+1]; 2132 char bstr[LACP_PARTNERSTR_MAX+1]; 2133 2134 #if 0 2135 /* 2136 * there's a convention to display small numbered peer 2137 * in the left. 2138 */ 2139 2140 if (lacp_compare_peerinfo(a, b) > 0) { 2141 const struct lacp_peerinfo *t; 2142 2143 t = a; 2144 a = b; 2145 b = t; 2146 } 2147 #endif 2148 2149 snprintf(buf, buflen, "[%s,%s]", 2150 lacp_format_partner(a, astr, sizeof(astr)), 2151 lacp_format_partner(b, bstr, sizeof(bstr))); 2152 2153 return (buf); 2154 } 2155 2156 const char * 2157 lacp_format_lagid_aggregator(const struct lacp_aggregator *la, 2158 char *buf, size_t buflen) 2159 { 2160 if (la == NULL) { 2161 return ("(none)"); 2162 } 2163 2164 return (lacp_format_lagid(&la->la_actor, &la->la_partner, buf, buflen)); 2165 } 2166 2167 const char * 2168 lacp_format_state(uint8_t state, char *buf, size_t buflen) 2169 { 2170 snprintf(buf, buflen, "%b", state, LACP_STATE_BITS); 2171 return (buf); 2172 } 2173 2174 static void 2175 lacp_dump_lacpdu(const struct lacpdu *du) 2176 { 2177 char buf[LACP_PARTNERSTR_MAX+1]; 2178 char buf2[LACP_STATESTR_MAX+1]; 2179 2180 printf("actor=%s\n", 2181 lacp_format_partner(&du->ldu_actor, buf, sizeof(buf))); 2182 printf("actor.state=%s\n", 2183 lacp_format_state(du->ldu_actor.lip_state, buf2, sizeof(buf2))); 2184 printf("partner=%s\n", 2185 lacp_format_partner(&du->ldu_partner, buf, sizeof(buf))); 2186 printf("partner.state=%s\n", 2187 lacp_format_state(du->ldu_partner.lip_state, buf2, sizeof(buf2))); 2188 2189 printf("maxdelay=%d\n", ntohs(du->ldu_collector.lci_maxdelay)); 2190 } 2191 2192 static void 2193 lacp_dprintf(const struct lacp_port *lp, const char *fmt, ...) 2194 { 2195 va_list va; 2196 2197 if (lp) { 2198 printf("%s: ", lp->lp_ifp->if_xname); 2199 } 2200 2201 va_start(va, fmt); 2202 vprintf(fmt, va); 2203 va_end(va); 2204 } 2205