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 #include <sys/time.h> 53 54 #include <net/if.h> 55 #include <net/if_var.h> 56 #include <net/if_dl.h> 57 #include <net/ethernet.h> 58 #include <net/infiniband.h> 59 #include <net/if_media.h> 60 #include <net/if_types.h> 61 62 #include <net/if_lagg.h> 63 #include <net/ieee8023ad_lacp.h> 64 65 /* 66 * actor system priority and port priority. 67 * XXX should be configurable. 68 */ 69 70 #define LACP_SYSTEM_PRIO 0x8000 71 #define LACP_PORT_PRIO 0x8000 72 73 const uint8_t ethermulticastaddr_slowprotocols[ETHER_ADDR_LEN] = 74 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x02 }; 75 76 static const struct tlv_template lacp_info_tlv_template[] = { 77 { LACP_TYPE_ACTORINFO, 78 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) }, 79 { LACP_TYPE_PARTNERINFO, 80 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) }, 81 { LACP_TYPE_COLLECTORINFO, 82 sizeof(struct tlvhdr) + sizeof(struct lacp_collectorinfo) }, 83 { 0, 0 }, 84 }; 85 86 static const struct tlv_template marker_info_tlv_template[] = { 87 { MARKER_TYPE_INFO, 88 sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) }, 89 { 0, 0 }, 90 }; 91 92 static const struct tlv_template marker_response_tlv_template[] = { 93 { MARKER_TYPE_RESPONSE, 94 sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) }, 95 { 0, 0 }, 96 }; 97 98 typedef void (*lacp_timer_func_t)(struct lacp_port *); 99 100 static void lacp_fill_actorinfo(struct lacp_port *, struct lacp_peerinfo *); 101 static void lacp_fill_markerinfo(struct lacp_port *, 102 struct lacp_markerinfo *); 103 104 static uint64_t lacp_aggregator_bandwidth(struct lacp_aggregator *); 105 static void lacp_suppress_distributing(struct lacp_softc *, 106 struct lacp_aggregator *); 107 static void lacp_transit_expire(void *); 108 static void lacp_update_portmap(struct lacp_softc *); 109 static void lacp_select_active_aggregator(struct lacp_softc *); 110 static uint16_t lacp_compose_key(struct lacp_port *); 111 static int tlv_check(const void *, size_t, const struct tlvhdr *, 112 const struct tlv_template *, boolean_t); 113 static void lacp_tick(void *); 114 115 static void lacp_fill_aggregator_id(struct lacp_aggregator *, 116 const struct lacp_port *); 117 static void lacp_fill_aggregator_id_peer(struct lacp_peerinfo *, 118 const struct lacp_peerinfo *); 119 static int lacp_aggregator_is_compatible(const struct lacp_aggregator *, 120 const struct lacp_port *); 121 static int lacp_peerinfo_is_compatible(const struct lacp_peerinfo *, 122 const struct lacp_peerinfo *); 123 124 static struct lacp_aggregator *lacp_aggregator_get(struct lacp_softc *, 125 struct lacp_port *); 126 static void lacp_aggregator_addref(struct lacp_softc *, 127 struct lacp_aggregator *); 128 static void lacp_aggregator_delref(struct lacp_softc *, 129 struct lacp_aggregator *); 130 131 /* receive machine */ 132 133 static int lacp_pdu_input(struct lacp_port *, struct mbuf *); 134 static int lacp_marker_input(struct lacp_port *, struct mbuf *); 135 static void lacp_sm_rx(struct lacp_port *, const struct lacpdu *); 136 static void lacp_sm_rx_timer(struct lacp_port *); 137 static void lacp_sm_rx_set_expired(struct lacp_port *); 138 static void lacp_sm_rx_update_ntt(struct lacp_port *, 139 const struct lacpdu *); 140 static void lacp_sm_rx_record_pdu(struct lacp_port *, 141 const struct lacpdu *); 142 static void lacp_sm_rx_update_selected(struct lacp_port *, 143 const struct lacpdu *); 144 static void lacp_sm_rx_record_default(struct lacp_port *); 145 static void lacp_sm_rx_update_default_selected(struct lacp_port *); 146 static void lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *, 147 const struct lacp_peerinfo *); 148 149 /* mux machine */ 150 151 static void lacp_sm_mux(struct lacp_port *); 152 static void lacp_set_mux(struct lacp_port *, enum lacp_mux_state); 153 static void lacp_sm_mux_timer(struct lacp_port *); 154 155 /* periodic transmit machine */ 156 157 static void lacp_sm_ptx_update_timeout(struct lacp_port *, uint8_t); 158 static void lacp_sm_ptx_tx_schedule(struct lacp_port *); 159 static void lacp_sm_ptx_timer(struct lacp_port *); 160 161 /* transmit machine */ 162 163 static void lacp_sm_tx(struct lacp_port *); 164 static void lacp_sm_assert_ntt(struct lacp_port *); 165 166 static void lacp_run_timers(struct lacp_port *); 167 static int lacp_compare_peerinfo(const struct lacp_peerinfo *, 168 const struct lacp_peerinfo *); 169 static int lacp_compare_systemid(const struct lacp_systemid *, 170 const struct lacp_systemid *); 171 static void lacp_port_enable(struct lacp_port *); 172 static void lacp_port_disable(struct lacp_port *); 173 static void lacp_select(struct lacp_port *); 174 static void lacp_unselect(struct lacp_port *); 175 static void lacp_disable_collecting(struct lacp_port *); 176 static void lacp_enable_collecting(struct lacp_port *); 177 static void lacp_disable_distributing(struct lacp_port *); 178 static void lacp_enable_distributing(struct lacp_port *); 179 static int lacp_xmit_lacpdu(struct lacp_port *); 180 static int lacp_xmit_marker(struct lacp_port *); 181 182 /* Debugging */ 183 184 static void lacp_dump_lacpdu(const struct lacpdu *); 185 static const char *lacp_format_partner(const struct lacp_peerinfo *, char *, 186 size_t); 187 static const char *lacp_format_lagid(const struct lacp_peerinfo *, 188 const struct lacp_peerinfo *, char *, size_t); 189 static const char *lacp_format_lagid_aggregator(const struct lacp_aggregator *, 190 char *, size_t); 191 static const char *lacp_format_state(uint8_t, char *, size_t); 192 static const char *lacp_format_mac(const uint8_t *, char *, size_t); 193 static const char *lacp_format_systemid(const struct lacp_systemid *, char *, 194 size_t); 195 static const char *lacp_format_portid(const struct lacp_portid *, char *, 196 size_t); 197 static void lacp_dprintf(const struct lacp_port *, const char *, ...) 198 __attribute__((__format__(__printf__, 2, 3))); 199 200 VNET_DEFINE_STATIC(int, lacp_debug); 201 #define V_lacp_debug VNET(lacp_debug) 202 SYSCTL_NODE(_net_link_lagg, OID_AUTO, lacp, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 203 "ieee802.3ad"); 204 SYSCTL_INT(_net_link_lagg_lacp, OID_AUTO, debug, CTLFLAG_RWTUN | CTLFLAG_VNET, 205 &VNET_NAME(lacp_debug), 0, "Enable LACP debug logging (1=debug, 2=trace)"); 206 207 VNET_DEFINE_STATIC(int, lacp_default_strict_mode) = 1; 208 SYSCTL_INT(_net_link_lagg_lacp, OID_AUTO, default_strict_mode, 209 CTLFLAG_RWTUN | CTLFLAG_VNET, &VNET_NAME(lacp_default_strict_mode), 0, 210 "LACP strict protocol compliance default"); 211 #define LACP_DPRINTF(a) if (V_lacp_debug & 0x01) { lacp_dprintf a ; } 212 #define LACP_TRACE(a) if (V_lacp_debug & 0x02) { lacp_dprintf(a,"%s\n",__func__); } 213 #define LACP_TPRINTF(a) if (V_lacp_debug & 0x04) { lacp_dprintf a ; } 214 215 /* 216 * partner administration variables. 217 * XXX should be configurable. 218 */ 219 220 static const struct lacp_peerinfo lacp_partner_admin_optimistic = { 221 .lip_systemid = { .lsi_prio = 0xffff }, 222 .lip_portid = { .lpi_prio = 0xffff }, 223 .lip_state = LACP_STATE_SYNC | LACP_STATE_AGGREGATION | 224 LACP_STATE_COLLECTING | LACP_STATE_DISTRIBUTING, 225 }; 226 227 static const struct lacp_peerinfo lacp_partner_admin_strict = { 228 .lip_systemid = { .lsi_prio = 0xffff }, 229 .lip_portid = { .lpi_prio = 0xffff }, 230 .lip_state = 0, 231 }; 232 233 static const lacp_timer_func_t lacp_timer_funcs[LACP_NTIMER] = { 234 [LACP_TIMER_CURRENT_WHILE] = lacp_sm_rx_timer, 235 [LACP_TIMER_PERIODIC] = lacp_sm_ptx_timer, 236 [LACP_TIMER_WAIT_WHILE] = lacp_sm_mux_timer, 237 }; 238 239 struct mbuf * 240 lacp_input(struct lagg_port *lgp, struct mbuf *m) 241 { 242 struct lacp_port *lp = LACP_PORT(lgp); 243 uint8_t subtype; 244 245 if (m->m_pkthdr.len < sizeof(struct ether_header) + sizeof(subtype)) { 246 m_freem(m); 247 return (NULL); 248 } 249 250 m_copydata(m, sizeof(struct ether_header), sizeof(subtype), &subtype); 251 switch (subtype) { 252 case SLOWPROTOCOLS_SUBTYPE_LACP: 253 lacp_pdu_input(lp, m); 254 return (NULL); 255 256 case SLOWPROTOCOLS_SUBTYPE_MARKER: 257 lacp_marker_input(lp, m); 258 return (NULL); 259 } 260 261 /* Not a subtype we are interested in */ 262 return (m); 263 } 264 265 /* 266 * lacp_pdu_input: process lacpdu 267 */ 268 static int 269 lacp_pdu_input(struct lacp_port *lp, struct mbuf *m) 270 { 271 struct lacp_softc *lsc = lp->lp_lsc; 272 struct lacpdu *du; 273 int error = 0; 274 275 if (m->m_pkthdr.len != sizeof(*du)) { 276 goto bad; 277 } 278 279 if ((m->m_flags & M_MCAST) == 0) { 280 goto bad; 281 } 282 283 if (m->m_len < sizeof(*du)) { 284 m = m_pullup(m, sizeof(*du)); 285 if (m == NULL) { 286 return (ENOMEM); 287 } 288 } 289 290 du = mtod(m, struct lacpdu *); 291 292 if (memcmp(&du->ldu_eh.ether_dhost, 293 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 294 goto bad; 295 } 296 297 /* 298 * ignore the version for compatibility with 299 * the future protocol revisions. 300 */ 301 #if 0 302 if (du->ldu_sph.sph_version != 1) { 303 goto bad; 304 } 305 #endif 306 307 /* 308 * ignore tlv types for compatibility with 309 * the future protocol revisions. 310 */ 311 if (tlv_check(du, sizeof(*du), &du->ldu_tlv_actor, 312 lacp_info_tlv_template, FALSE)) { 313 goto bad; 314 } 315 316 if (V_lacp_debug > 0) { 317 lacp_dprintf(lp, "lacpdu receive\n"); 318 lacp_dump_lacpdu(du); 319 } 320 321 if ((1 << lp->lp_ifp->if_dunit) & lp->lp_lsc->lsc_debug.lsc_rx_test) { 322 LACP_TPRINTF((lp, "Dropping RX PDU\n")); 323 goto bad; 324 } 325 326 LACP_LOCK(lsc); 327 lacp_sm_rx(lp, du); 328 LACP_UNLOCK(lsc); 329 330 m_freem(m); 331 return (error); 332 333 bad: 334 m_freem(m); 335 return (EINVAL); 336 } 337 338 static void 339 lacp_fill_actorinfo(struct lacp_port *lp, struct lacp_peerinfo *info) 340 { 341 struct lagg_port *lgp = lp->lp_lagg; 342 struct lagg_softc *sc = lgp->lp_softc; 343 344 info->lip_systemid.lsi_prio = htons(LACP_SYSTEM_PRIO); 345 memcpy(&info->lip_systemid.lsi_mac, 346 IF_LLADDR(sc->sc_ifp), ETHER_ADDR_LEN); 347 info->lip_portid.lpi_prio = htons(LACP_PORT_PRIO); 348 info->lip_portid.lpi_portno = htons(lp->lp_ifp->if_index); 349 info->lip_state = lp->lp_state; 350 } 351 352 static void 353 lacp_fill_markerinfo(struct lacp_port *lp, struct lacp_markerinfo *info) 354 { 355 struct ifnet *ifp = lp->lp_ifp; 356 357 /* Fill in the port index and system id (encoded as the MAC) */ 358 info->mi_rq_port = htons(ifp->if_index); 359 memcpy(&info->mi_rq_system, lp->lp_systemid.lsi_mac, ETHER_ADDR_LEN); 360 info->mi_rq_xid = htonl(0); 361 } 362 363 static int 364 lacp_xmit_lacpdu(struct lacp_port *lp) 365 { 366 struct lagg_port *lgp = lp->lp_lagg; 367 struct mbuf *m; 368 struct lacpdu *du; 369 int error; 370 371 LACP_LOCK_ASSERT(lp->lp_lsc); 372 373 m = m_gethdr(M_NOWAIT, MT_DATA); 374 if (m == NULL) { 375 return (ENOMEM); 376 } 377 m->m_len = m->m_pkthdr.len = sizeof(*du); 378 379 du = mtod(m, struct lacpdu *); 380 memset(du, 0, sizeof(*du)); 381 382 memcpy(&du->ldu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 383 ETHER_ADDR_LEN); 384 memcpy(&du->ldu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN); 385 du->ldu_eh.ether_type = htons(ETHERTYPE_SLOW); 386 387 du->ldu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_LACP; 388 du->ldu_sph.sph_version = 1; 389 390 TLV_SET(&du->ldu_tlv_actor, LACP_TYPE_ACTORINFO, sizeof(du->ldu_actor)); 391 du->ldu_actor = lp->lp_actor; 392 393 TLV_SET(&du->ldu_tlv_partner, LACP_TYPE_PARTNERINFO, 394 sizeof(du->ldu_partner)); 395 du->ldu_partner = lp->lp_partner; 396 397 TLV_SET(&du->ldu_tlv_collector, LACP_TYPE_COLLECTORINFO, 398 sizeof(du->ldu_collector)); 399 du->ldu_collector.lci_maxdelay = 0; 400 401 if (V_lacp_debug > 0) { 402 lacp_dprintf(lp, "lacpdu transmit\n"); 403 lacp_dump_lacpdu(du); 404 } 405 406 m->m_flags |= M_MCAST; 407 408 /* 409 * XXX should use higher priority queue. 410 * otherwise network congestion can break aggregation. 411 */ 412 413 error = lagg_enqueue(lp->lp_ifp, m); 414 return (error); 415 } 416 417 static int 418 lacp_xmit_marker(struct lacp_port *lp) 419 { 420 struct lagg_port *lgp = lp->lp_lagg; 421 struct mbuf *m; 422 struct markerdu *mdu; 423 int error; 424 425 LACP_LOCK_ASSERT(lp->lp_lsc); 426 427 m = m_gethdr(M_NOWAIT, MT_DATA); 428 if (m == NULL) { 429 return (ENOMEM); 430 } 431 m->m_len = m->m_pkthdr.len = sizeof(*mdu); 432 433 mdu = mtod(m, struct markerdu *); 434 memset(mdu, 0, sizeof(*mdu)); 435 436 memcpy(&mdu->mdu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 437 ETHER_ADDR_LEN); 438 memcpy(&mdu->mdu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN); 439 mdu->mdu_eh.ether_type = htons(ETHERTYPE_SLOW); 440 441 mdu->mdu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_MARKER; 442 mdu->mdu_sph.sph_version = 1; 443 444 /* Bump the transaction id and copy over the marker info */ 445 lp->lp_marker.mi_rq_xid = htonl(ntohl(lp->lp_marker.mi_rq_xid) + 1); 446 TLV_SET(&mdu->mdu_tlv, MARKER_TYPE_INFO, sizeof(mdu->mdu_info)); 447 mdu->mdu_info = lp->lp_marker; 448 449 LACP_DPRINTF((lp, "marker transmit, port=%u, sys=%6D, id=%u\n", 450 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, ":", 451 ntohl(mdu->mdu_info.mi_rq_xid))); 452 453 m->m_flags |= M_MCAST; 454 error = lagg_enqueue(lp->lp_ifp, m); 455 return (error); 456 } 457 458 void 459 lacp_linkstate(struct lagg_port *lgp) 460 { 461 struct lacp_port *lp = LACP_PORT(lgp); 462 struct lacp_softc *lsc = lp->lp_lsc; 463 struct ifnet *ifp = lgp->lp_ifp; 464 struct ifmediareq ifmr; 465 int error = 0; 466 u_int media; 467 uint8_t old_state; 468 uint16_t old_key; 469 470 bzero((char *)&ifmr, sizeof(ifmr)); 471 error = (*ifp->if_ioctl)(ifp, SIOCGIFXMEDIA, (caddr_t)&ifmr); 472 if (error != 0) { 473 bzero((char *)&ifmr, sizeof(ifmr)); 474 error = (*ifp->if_ioctl)(ifp, SIOCGIFMEDIA, (caddr_t)&ifmr); 475 } 476 if (error != 0) 477 return; 478 479 LACP_LOCK(lsc); 480 media = ifmr.ifm_active; 481 LACP_DPRINTF((lp, "media changed 0x%x -> 0x%x, ether = %d, fdx = %d, " 482 "link = %d\n", lp->lp_media, media, IFM_TYPE(media) == IFM_ETHER, 483 (media & IFM_FDX) != 0, ifp->if_link_state == LINK_STATE_UP)); 484 old_state = lp->lp_state; 485 old_key = lp->lp_key; 486 487 lp->lp_media = media; 488 /* 489 * If the port is not an active full duplex Ethernet link then it can 490 * not be aggregated. 491 */ 492 if (IFM_TYPE(media) != IFM_ETHER || (media & IFM_FDX) == 0 || 493 ifp->if_link_state != LINK_STATE_UP) { 494 lacp_port_disable(lp); 495 } else { 496 lacp_port_enable(lp); 497 } 498 lp->lp_key = lacp_compose_key(lp); 499 500 if (old_state != lp->lp_state || old_key != lp->lp_key) { 501 LACP_DPRINTF((lp, "-> UNSELECTED\n")); 502 lp->lp_selected = LACP_UNSELECTED; 503 } 504 LACP_UNLOCK(lsc); 505 } 506 507 static void 508 lacp_tick(void *arg) 509 { 510 struct lacp_softc *lsc = arg; 511 struct lacp_port *lp; 512 513 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { 514 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) 515 continue; 516 517 CURVNET_SET(lp->lp_ifp->if_vnet); 518 lacp_run_timers(lp); 519 520 lacp_select(lp); 521 lacp_sm_mux(lp); 522 lacp_sm_tx(lp); 523 lacp_sm_ptx_tx_schedule(lp); 524 CURVNET_RESTORE(); 525 } 526 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc); 527 } 528 529 int 530 lacp_port_create(struct lagg_port *lgp) 531 { 532 struct lagg_softc *sc = lgp->lp_softc; 533 struct lacp_softc *lsc = LACP_SOFTC(sc); 534 struct lacp_port *lp; 535 struct ifnet *ifp = lgp->lp_ifp; 536 struct sockaddr_dl sdl; 537 struct ifmultiaddr *rifma = NULL; 538 int error; 539 540 link_init_sdl(ifp, (struct sockaddr *)&sdl, IFT_ETHER); 541 sdl.sdl_alen = ETHER_ADDR_LEN; 542 543 bcopy(ðermulticastaddr_slowprotocols, 544 LLADDR(&sdl), ETHER_ADDR_LEN); 545 error = if_addmulti(ifp, (struct sockaddr *)&sdl, &rifma); 546 if (error) { 547 printf("%s: ADDMULTI failed on %s\n", __func__, 548 lgp->lp_ifp->if_xname); 549 return (error); 550 } 551 552 lp = malloc(sizeof(struct lacp_port), 553 M_DEVBUF, M_NOWAIT|M_ZERO); 554 if (lp == NULL) 555 return (ENOMEM); 556 557 LACP_LOCK(lsc); 558 lgp->lp_psc = lp; 559 lp->lp_ifp = ifp; 560 lp->lp_lagg = lgp; 561 lp->lp_lsc = lsc; 562 lp->lp_ifma = rifma; 563 564 LIST_INSERT_HEAD(&lsc->lsc_ports, lp, lp_next); 565 566 lacp_fill_actorinfo(lp, &lp->lp_actor); 567 lacp_fill_markerinfo(lp, &lp->lp_marker); 568 lp->lp_state = LACP_STATE_ACTIVITY; 569 lp->lp_aggregator = NULL; 570 lacp_sm_rx_set_expired(lp); 571 LACP_UNLOCK(lsc); 572 lacp_linkstate(lgp); 573 574 return (0); 575 } 576 577 void 578 lacp_port_destroy(struct lagg_port *lgp) 579 { 580 struct lacp_port *lp = LACP_PORT(lgp); 581 struct lacp_softc *lsc = lp->lp_lsc; 582 int i; 583 584 LACP_LOCK(lsc); 585 for (i = 0; i < LACP_NTIMER; i++) { 586 LACP_TIMER_DISARM(lp, i); 587 } 588 589 lacp_disable_collecting(lp); 590 lacp_disable_distributing(lp); 591 lacp_unselect(lp); 592 593 LIST_REMOVE(lp, lp_next); 594 LACP_UNLOCK(lsc); 595 596 /* The address may have already been removed by if_purgemaddrs() */ 597 if (!lgp->lp_detaching) 598 if_delmulti_ifma(lp->lp_ifma); 599 600 free(lp, M_DEVBUF); 601 } 602 603 void 604 lacp_req(struct lagg_softc *sc, void *data) 605 { 606 struct lacp_opreq *req = (struct lacp_opreq *)data; 607 struct lacp_softc *lsc = LACP_SOFTC(sc); 608 struct lacp_aggregator *la; 609 610 bzero(req, sizeof(struct lacp_opreq)); 611 612 /* 613 * If the LACP softc is NULL, return with the opreq structure full of 614 * zeros. It is normal for the softc to be NULL while the lagg is 615 * being destroyed. 616 */ 617 if (NULL == lsc) 618 return; 619 620 la = lsc->lsc_active_aggregator; 621 LACP_LOCK(lsc); 622 if (la != NULL) { 623 req->actor_prio = ntohs(la->la_actor.lip_systemid.lsi_prio); 624 memcpy(&req->actor_mac, &la->la_actor.lip_systemid.lsi_mac, 625 ETHER_ADDR_LEN); 626 req->actor_key = ntohs(la->la_actor.lip_key); 627 req->actor_portprio = ntohs(la->la_actor.lip_portid.lpi_prio); 628 req->actor_portno = ntohs(la->la_actor.lip_portid.lpi_portno); 629 req->actor_state = la->la_actor.lip_state; 630 631 req->partner_prio = ntohs(la->la_partner.lip_systemid.lsi_prio); 632 memcpy(&req->partner_mac, &la->la_partner.lip_systemid.lsi_mac, 633 ETHER_ADDR_LEN); 634 req->partner_key = ntohs(la->la_partner.lip_key); 635 req->partner_portprio = ntohs(la->la_partner.lip_portid.lpi_prio); 636 req->partner_portno = ntohs(la->la_partner.lip_portid.lpi_portno); 637 req->partner_state = la->la_partner.lip_state; 638 } 639 LACP_UNLOCK(lsc); 640 } 641 642 void 643 lacp_portreq(struct lagg_port *lgp, void *data) 644 { 645 struct lacp_opreq *req = (struct lacp_opreq *)data; 646 struct lacp_port *lp = LACP_PORT(lgp); 647 struct lacp_softc *lsc = lp->lp_lsc; 648 649 LACP_LOCK(lsc); 650 req->actor_prio = ntohs(lp->lp_actor.lip_systemid.lsi_prio); 651 memcpy(&req->actor_mac, &lp->lp_actor.lip_systemid.lsi_mac, 652 ETHER_ADDR_LEN); 653 req->actor_key = ntohs(lp->lp_actor.lip_key); 654 req->actor_portprio = ntohs(lp->lp_actor.lip_portid.lpi_prio); 655 req->actor_portno = ntohs(lp->lp_actor.lip_portid.lpi_portno); 656 req->actor_state = lp->lp_actor.lip_state; 657 658 req->partner_prio = ntohs(lp->lp_partner.lip_systemid.lsi_prio); 659 memcpy(&req->partner_mac, &lp->lp_partner.lip_systemid.lsi_mac, 660 ETHER_ADDR_LEN); 661 req->partner_key = ntohs(lp->lp_partner.lip_key); 662 req->partner_portprio = ntohs(lp->lp_partner.lip_portid.lpi_prio); 663 req->partner_portno = ntohs(lp->lp_partner.lip_portid.lpi_portno); 664 req->partner_state = lp->lp_partner.lip_state; 665 LACP_UNLOCK(lsc); 666 } 667 668 static void 669 lacp_disable_collecting(struct lacp_port *lp) 670 { 671 LACP_DPRINTF((lp, "collecting disabled\n")); 672 lp->lp_state &= ~LACP_STATE_COLLECTING; 673 } 674 675 static void 676 lacp_enable_collecting(struct lacp_port *lp) 677 { 678 LACP_DPRINTF((lp, "collecting enabled\n")); 679 lp->lp_state |= LACP_STATE_COLLECTING; 680 } 681 682 static void 683 lacp_disable_distributing(struct lacp_port *lp) 684 { 685 struct lacp_aggregator *la = lp->lp_aggregator; 686 struct lacp_softc *lsc = lp->lp_lsc; 687 struct lagg_softc *sc = lsc->lsc_softc; 688 char buf[LACP_LAGIDSTR_MAX+1]; 689 690 LACP_LOCK_ASSERT(lsc); 691 692 if (la == NULL || (lp->lp_state & LACP_STATE_DISTRIBUTING) == 0) { 693 return; 694 } 695 696 KASSERT(!TAILQ_EMPTY(&la->la_ports), ("no aggregator ports")); 697 KASSERT(la->la_nports > 0, ("nports invalid (%d)", la->la_nports)); 698 KASSERT(la->la_refcnt >= la->la_nports, ("aggregator refcnt invalid")); 699 700 LACP_DPRINTF((lp, "disable distributing on aggregator %s, " 701 "nports %d -> %d\n", 702 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 703 la->la_nports, la->la_nports - 1)); 704 705 TAILQ_REMOVE(&la->la_ports, lp, lp_dist_q); 706 la->la_nports--; 707 sc->sc_active = la->la_nports; 708 709 if (lsc->lsc_active_aggregator == la) { 710 lacp_suppress_distributing(lsc, la); 711 lacp_select_active_aggregator(lsc); 712 /* regenerate the port map, the active aggregator has changed */ 713 lacp_update_portmap(lsc); 714 } 715 716 lp->lp_state &= ~LACP_STATE_DISTRIBUTING; 717 if_link_state_change(sc->sc_ifp, 718 sc->sc_active ? LINK_STATE_UP : LINK_STATE_DOWN); 719 } 720 721 static void 722 lacp_enable_distributing(struct lacp_port *lp) 723 { 724 struct lacp_aggregator *la = lp->lp_aggregator; 725 struct lacp_softc *lsc = lp->lp_lsc; 726 struct lagg_softc *sc = lsc->lsc_softc; 727 char buf[LACP_LAGIDSTR_MAX+1]; 728 729 LACP_LOCK_ASSERT(lsc); 730 731 if ((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0) { 732 return; 733 } 734 735 LACP_DPRINTF((lp, "enable distributing on aggregator %s, " 736 "nports %d -> %d\n", 737 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 738 la->la_nports, la->la_nports + 1)); 739 740 KASSERT(la->la_refcnt > la->la_nports, ("aggregator refcnt invalid")); 741 TAILQ_INSERT_HEAD(&la->la_ports, lp, lp_dist_q); 742 la->la_nports++; 743 sc->sc_active = la->la_nports; 744 745 lp->lp_state |= LACP_STATE_DISTRIBUTING; 746 747 if (lsc->lsc_active_aggregator == la) { 748 lacp_suppress_distributing(lsc, la); 749 lacp_update_portmap(lsc); 750 } else 751 /* try to become the active aggregator */ 752 lacp_select_active_aggregator(lsc); 753 754 if_link_state_change(sc->sc_ifp, 755 sc->sc_active ? LINK_STATE_UP : LINK_STATE_DOWN); 756 } 757 758 static void 759 lacp_transit_expire(void *vp) 760 { 761 struct lacp_softc *lsc = vp; 762 763 LACP_LOCK_ASSERT(lsc); 764 765 CURVNET_SET(lsc->lsc_softc->sc_ifp->if_vnet); 766 LACP_TRACE(NULL); 767 CURVNET_RESTORE(); 768 769 lsc->lsc_suppress_distributing = FALSE; 770 } 771 772 void 773 lacp_attach(struct lagg_softc *sc) 774 { 775 struct lacp_softc *lsc; 776 777 lsc = malloc(sizeof(struct lacp_softc), M_DEVBUF, M_WAITOK | M_ZERO); 778 779 sc->sc_psc = lsc; 780 lsc->lsc_softc = sc; 781 782 lsc->lsc_hashkey = m_ether_tcpip_hash_init(); 783 lsc->lsc_active_aggregator = NULL; 784 lsc->lsc_strict_mode = VNET(lacp_default_strict_mode); 785 LACP_LOCK_INIT(lsc); 786 TAILQ_INIT(&lsc->lsc_aggregators); 787 LIST_INIT(&lsc->lsc_ports); 788 789 callout_init_mtx(&lsc->lsc_transit_callout, &lsc->lsc_mtx, 0); 790 callout_init_mtx(&lsc->lsc_callout, &lsc->lsc_mtx, 0); 791 792 /* if the lagg is already up then do the same */ 793 if (sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING) 794 lacp_init(sc); 795 } 796 797 void 798 lacp_detach(void *psc) 799 { 800 struct lacp_softc *lsc = (struct lacp_softc *)psc; 801 802 KASSERT(TAILQ_EMPTY(&lsc->lsc_aggregators), 803 ("aggregators still active")); 804 KASSERT(lsc->lsc_active_aggregator == NULL, 805 ("aggregator still attached")); 806 807 callout_drain(&lsc->lsc_transit_callout); 808 callout_drain(&lsc->lsc_callout); 809 810 LACP_LOCK_DESTROY(lsc); 811 free(lsc, M_DEVBUF); 812 } 813 814 void 815 lacp_init(struct lagg_softc *sc) 816 { 817 struct lacp_softc *lsc = LACP_SOFTC(sc); 818 819 LACP_LOCK(lsc); 820 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc); 821 LACP_UNLOCK(lsc); 822 } 823 824 void 825 lacp_stop(struct lagg_softc *sc) 826 { 827 struct lacp_softc *lsc = LACP_SOFTC(sc); 828 829 LACP_LOCK(lsc); 830 callout_stop(&lsc->lsc_transit_callout); 831 callout_stop(&lsc->lsc_callout); 832 LACP_UNLOCK(lsc); 833 } 834 835 struct lagg_port * 836 lacp_select_tx_port_by_hash(struct lagg_softc *sc, uint32_t hash, 837 uint8_t numa_domain, int *err) 838 { 839 struct lacp_softc *lsc = LACP_SOFTC(sc); 840 struct lacp_portmap *pm; 841 struct lacp_port *lp; 842 struct lacp_port **map; 843 int count; 844 845 if (__predict_false(lsc->lsc_suppress_distributing)) { 846 LACP_DPRINTF((NULL, "%s: waiting transit\n", __func__)); 847 *err = ENOBUFS; 848 return (NULL); 849 } 850 851 pm = &lsc->lsc_pmap[lsc->lsc_activemap]; 852 if (pm->pm_count == 0) { 853 LACP_DPRINTF((NULL, "%s: no active aggregator\n", __func__)); 854 *err = ENETDOWN; 855 return (NULL); 856 } 857 858 #ifdef NUMA 859 if ((sc->sc_opts & LAGG_OPT_USE_NUMA) && 860 pm->pm_num_dom > 1 && numa_domain < MAXMEMDOM) { 861 count = pm->pm_numa[numa_domain].count; 862 if (count > 0) { 863 map = pm->pm_numa[numa_domain].map; 864 } else { 865 /* No ports on this domain; use global hash. */ 866 map = pm->pm_map; 867 count = pm->pm_count; 868 } 869 } else 870 #endif 871 { 872 map = pm->pm_map; 873 count = pm->pm_count; 874 } 875 876 hash %= count; 877 lp = map[hash]; 878 879 return (lp->lp_lagg); 880 } 881 882 struct lagg_port * 883 lacp_select_tx_port(struct lagg_softc *sc, struct mbuf *m, int *err) 884 { 885 struct lacp_softc *lsc = LACP_SOFTC(sc); 886 uint32_t hash; 887 uint8_t numa_domain; 888 889 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) && 890 M_HASHTYPE_GET(m) != M_HASHTYPE_NONE) 891 hash = m->m_pkthdr.flowid >> sc->flowid_shift; 892 else 893 hash = m_ether_tcpip_hash(sc->sc_flags, m, lsc->lsc_hashkey); 894 895 numa_domain = m->m_pkthdr.numa_domain; 896 return (lacp_select_tx_port_by_hash(sc, hash, numa_domain, err)); 897 } 898 899 /* 900 * lacp_suppress_distributing: drop transmit packets for a while 901 * to preserve packet ordering. 902 */ 903 904 static void 905 lacp_suppress_distributing(struct lacp_softc *lsc, struct lacp_aggregator *la) 906 { 907 struct lacp_port *lp; 908 909 if (lsc->lsc_active_aggregator != la) { 910 return; 911 } 912 913 LACP_TRACE(NULL); 914 915 lsc->lsc_suppress_distributing = TRUE; 916 917 /* send a marker frame down each port to verify the queues are empty */ 918 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { 919 lp->lp_flags |= LACP_PORT_MARK; 920 if (lacp_xmit_marker(lp) != 0) 921 lp->lp_flags &= ~LACP_PORT_MARK; 922 } 923 924 /* set a timeout for the marker frames */ 925 callout_reset(&lsc->lsc_transit_callout, 926 LACP_TRANSIT_DELAY * hz / 1000, lacp_transit_expire, lsc); 927 } 928 929 static int 930 lacp_compare_peerinfo(const struct lacp_peerinfo *a, 931 const struct lacp_peerinfo *b) 932 { 933 return (memcmp(a, b, offsetof(struct lacp_peerinfo, lip_state))); 934 } 935 936 static int 937 lacp_compare_systemid(const struct lacp_systemid *a, 938 const struct lacp_systemid *b) 939 { 940 return (memcmp(a, b, sizeof(*a))); 941 } 942 943 #if 0 /* unused */ 944 static int 945 lacp_compare_portid(const struct lacp_portid *a, 946 const struct lacp_portid *b) 947 { 948 return (memcmp(a, b, sizeof(*a))); 949 } 950 #endif 951 952 static uint64_t 953 lacp_aggregator_bandwidth(struct lacp_aggregator *la) 954 { 955 struct lacp_port *lp; 956 uint64_t speed; 957 958 lp = TAILQ_FIRST(&la->la_ports); 959 if (lp == NULL) { 960 return (0); 961 } 962 963 speed = ifmedia_baudrate(lp->lp_media); 964 speed *= la->la_nports; 965 if (speed == 0) { 966 LACP_DPRINTF((lp, "speed 0? media=0x%x nports=%d\n", 967 lp->lp_media, la->la_nports)); 968 } 969 970 return (speed); 971 } 972 973 /* 974 * lacp_select_active_aggregator: select an aggregator to be used to transmit 975 * packets from lagg(4) interface. 976 */ 977 978 static void 979 lacp_select_active_aggregator(struct lacp_softc *lsc) 980 { 981 struct lacp_aggregator *la; 982 struct lacp_aggregator *best_la = NULL; 983 uint64_t best_speed = 0; 984 char buf[LACP_LAGIDSTR_MAX+1]; 985 986 LACP_TRACE(NULL); 987 988 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 989 uint64_t speed; 990 991 if (la->la_nports == 0) { 992 continue; 993 } 994 995 speed = lacp_aggregator_bandwidth(la); 996 LACP_DPRINTF((NULL, "%s, speed=%jd, nports=%d\n", 997 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 998 speed, la->la_nports)); 999 1000 /* 1001 * This aggregator is chosen if the partner has a better 1002 * system priority or, the total aggregated speed is higher 1003 * or, it is already the chosen aggregator 1004 */ 1005 if ((best_la != NULL && LACP_SYS_PRI(la->la_partner) < 1006 LACP_SYS_PRI(best_la->la_partner)) || 1007 speed > best_speed || 1008 (speed == best_speed && 1009 la == lsc->lsc_active_aggregator)) { 1010 best_la = la; 1011 best_speed = speed; 1012 } 1013 } 1014 1015 KASSERT(best_la == NULL || best_la->la_nports > 0, 1016 ("invalid aggregator refcnt")); 1017 KASSERT(best_la == NULL || !TAILQ_EMPTY(&best_la->la_ports), 1018 ("invalid aggregator list")); 1019 1020 if (lsc->lsc_active_aggregator != best_la) { 1021 LACP_DPRINTF((NULL, "active aggregator changed\n")); 1022 LACP_DPRINTF((NULL, "old %s\n", 1023 lacp_format_lagid_aggregator(lsc->lsc_active_aggregator, 1024 buf, sizeof(buf)))); 1025 } else { 1026 LACP_DPRINTF((NULL, "active aggregator not changed\n")); 1027 } 1028 LACP_DPRINTF((NULL, "new %s\n", 1029 lacp_format_lagid_aggregator(best_la, buf, sizeof(buf)))); 1030 1031 if (lsc->lsc_active_aggregator != best_la) { 1032 lsc->lsc_active_aggregator = best_la; 1033 lacp_update_portmap(lsc); 1034 if (best_la) { 1035 lacp_suppress_distributing(lsc, best_la); 1036 } 1037 } 1038 } 1039 1040 /* 1041 * Updated the inactive portmap array with the new list of ports and 1042 * make it live. 1043 */ 1044 static void 1045 lacp_update_portmap(struct lacp_softc *lsc) 1046 { 1047 struct lagg_softc *sc = lsc->lsc_softc; 1048 struct lacp_aggregator *la; 1049 struct lacp_portmap *p; 1050 struct lacp_port *lp; 1051 uint64_t speed; 1052 u_int newmap; 1053 int i; 1054 #ifdef NUMA 1055 int count; 1056 uint8_t domain; 1057 #endif 1058 1059 newmap = lsc->lsc_activemap == 0 ? 1 : 0; 1060 p = &lsc->lsc_pmap[newmap]; 1061 la = lsc->lsc_active_aggregator; 1062 speed = 0; 1063 bzero(p, sizeof(struct lacp_portmap)); 1064 1065 if (la != NULL && la->la_nports > 0) { 1066 p->pm_count = la->la_nports; 1067 i = 0; 1068 TAILQ_FOREACH(lp, &la->la_ports, lp_dist_q) { 1069 p->pm_map[i++] = lp; 1070 #ifdef NUMA 1071 domain = lp->lp_ifp->if_numa_domain; 1072 if (domain >= MAXMEMDOM) 1073 continue; 1074 count = p->pm_numa[domain].count; 1075 p->pm_numa[domain].map[count] = lp; 1076 p->pm_numa[domain].count++; 1077 #endif 1078 } 1079 KASSERT(i == p->pm_count, ("Invalid port count")); 1080 1081 #ifdef NUMA 1082 for (i = 0; i < MAXMEMDOM; i++) { 1083 if (p->pm_numa[i].count != 0) 1084 p->pm_num_dom++; 1085 } 1086 #endif 1087 speed = lacp_aggregator_bandwidth(la); 1088 } 1089 sc->sc_ifp->if_baudrate = speed; 1090 EVENTHANDLER_INVOKE(ifnet_event, sc->sc_ifp, 1091 IFNET_EVENT_UPDATE_BAUDRATE); 1092 1093 /* switch the active portmap over */ 1094 atomic_store_rel_int(&lsc->lsc_activemap, newmap); 1095 LACP_DPRINTF((NULL, "Set table %d with %d ports\n", 1096 lsc->lsc_activemap, 1097 lsc->lsc_pmap[lsc->lsc_activemap].pm_count)); 1098 } 1099 1100 static uint16_t 1101 lacp_compose_key(struct lacp_port *lp) 1102 { 1103 struct lagg_port *lgp = lp->lp_lagg; 1104 struct lagg_softc *sc = lgp->lp_softc; 1105 u_int media = lp->lp_media; 1106 uint16_t key; 1107 1108 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) { 1109 /* 1110 * non-aggregatable links should have unique keys. 1111 * 1112 * XXX this isn't really unique as if_index is 16 bit. 1113 */ 1114 1115 /* bit 0..14: (some bits of) if_index of this port */ 1116 key = lp->lp_ifp->if_index; 1117 /* bit 15: 1 */ 1118 key |= 0x8000; 1119 } else { 1120 u_int subtype = IFM_SUBTYPE(media); 1121 1122 KASSERT(IFM_TYPE(media) == IFM_ETHER, ("invalid media type")); 1123 KASSERT((media & IFM_FDX) != 0, ("aggregating HDX interface")); 1124 1125 /* bit 0..4: IFM_SUBTYPE modulo speed */ 1126 switch (subtype) { 1127 case IFM_10_T: 1128 case IFM_10_2: 1129 case IFM_10_5: 1130 case IFM_10_STP: 1131 case IFM_10_FL: 1132 key = IFM_10_T; 1133 break; 1134 case IFM_100_TX: 1135 case IFM_100_FX: 1136 case IFM_100_T4: 1137 case IFM_100_VG: 1138 case IFM_100_T2: 1139 case IFM_100_T: 1140 case IFM_100_SGMII: 1141 key = IFM_100_TX; 1142 break; 1143 case IFM_1000_SX: 1144 case IFM_1000_LX: 1145 case IFM_1000_CX: 1146 case IFM_1000_T: 1147 case IFM_1000_KX: 1148 case IFM_1000_SGMII: 1149 case IFM_1000_CX_SGMII: 1150 key = IFM_1000_SX; 1151 break; 1152 case IFM_10G_LR: 1153 case IFM_10G_SR: 1154 case IFM_10G_CX4: 1155 case IFM_10G_TWINAX: 1156 case IFM_10G_TWINAX_LONG: 1157 case IFM_10G_LRM: 1158 case IFM_10G_T: 1159 case IFM_10G_KX4: 1160 case IFM_10G_KR: 1161 case IFM_10G_CR1: 1162 case IFM_10G_ER: 1163 case IFM_10G_SFI: 1164 case IFM_10G_AOC: 1165 key = IFM_10G_LR; 1166 break; 1167 case IFM_20G_KR2: 1168 key = IFM_20G_KR2; 1169 break; 1170 case IFM_2500_KX: 1171 case IFM_2500_T: 1172 case IFM_2500_X: 1173 key = IFM_2500_KX; 1174 break; 1175 case IFM_5000_T: 1176 case IFM_5000_KR: 1177 case IFM_5000_KR_S: 1178 case IFM_5000_KR1: 1179 key = IFM_5000_T; 1180 break; 1181 case IFM_50G_PCIE: 1182 case IFM_50G_CR2: 1183 case IFM_50G_KR2: 1184 case IFM_50G_KR4: 1185 case IFM_50G_SR2: 1186 case IFM_50G_LR2: 1187 case IFM_50G_LAUI2_AC: 1188 case IFM_50G_LAUI2: 1189 case IFM_50G_AUI2_AC: 1190 case IFM_50G_AUI2: 1191 case IFM_50G_CP: 1192 case IFM_50G_SR: 1193 case IFM_50G_LR: 1194 case IFM_50G_FR: 1195 case IFM_50G_KR_PAM4: 1196 case IFM_50G_AUI1_AC: 1197 case IFM_50G_AUI1: 1198 key = IFM_50G_PCIE; 1199 break; 1200 case IFM_56G_R4: 1201 key = IFM_56G_R4; 1202 break; 1203 case IFM_25G_PCIE: 1204 case IFM_25G_CR: 1205 case IFM_25G_KR: 1206 case IFM_25G_SR: 1207 case IFM_25G_LR: 1208 case IFM_25G_ACC: 1209 case IFM_25G_AOC: 1210 case IFM_25G_T: 1211 case IFM_25G_CR_S: 1212 case IFM_25G_CR1: 1213 case IFM_25G_KR_S: 1214 case IFM_25G_AUI: 1215 case IFM_25G_KR1: 1216 key = IFM_25G_PCIE; 1217 break; 1218 case IFM_40G_CR4: 1219 case IFM_40G_SR4: 1220 case IFM_40G_LR4: 1221 case IFM_40G_LM4: 1222 case IFM_40G_XLPPI: 1223 case IFM_40G_KR4: 1224 case IFM_40G_XLAUI: 1225 case IFM_40G_XLAUI_AC: 1226 case IFM_40G_ER4: 1227 key = IFM_40G_CR4; 1228 break; 1229 case IFM_100G_CR4: 1230 case IFM_100G_SR4: 1231 case IFM_100G_KR4: 1232 case IFM_100G_LR4: 1233 case IFM_100G_CAUI4_AC: 1234 case IFM_100G_CAUI4: 1235 case IFM_100G_AUI4_AC: 1236 case IFM_100G_AUI4: 1237 case IFM_100G_CR_PAM4: 1238 case IFM_100G_KR_PAM4: 1239 case IFM_100G_CP2: 1240 case IFM_100G_SR2: 1241 case IFM_100G_DR: 1242 case IFM_100G_KR2_PAM4: 1243 case IFM_100G_CAUI2_AC: 1244 case IFM_100G_CAUI2: 1245 case IFM_100G_AUI2_AC: 1246 case IFM_100G_AUI2: 1247 key = IFM_100G_CR4; 1248 break; 1249 case IFM_200G_CR4_PAM4: 1250 case IFM_200G_SR4: 1251 case IFM_200G_FR4: 1252 case IFM_200G_LR4: 1253 case IFM_200G_DR4: 1254 case IFM_200G_KR4_PAM4: 1255 case IFM_200G_AUI4_AC: 1256 case IFM_200G_AUI4: 1257 case IFM_200G_AUI8_AC: 1258 case IFM_200G_AUI8: 1259 key = IFM_200G_CR4_PAM4; 1260 break; 1261 case IFM_400G_FR8: 1262 case IFM_400G_LR8: 1263 case IFM_400G_DR4: 1264 case IFM_400G_AUI8_AC: 1265 case IFM_400G_AUI8: 1266 key = IFM_400G_FR8; 1267 break; 1268 default: 1269 key = subtype; 1270 break; 1271 } 1272 /* bit 5..14: (some bits of) if_index of lagg device */ 1273 key |= 0x7fe0 & ((sc->sc_ifp->if_index) << 5); 1274 /* bit 15: 0 */ 1275 } 1276 return (htons(key)); 1277 } 1278 1279 static void 1280 lacp_aggregator_addref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1281 { 1282 char buf[LACP_LAGIDSTR_MAX+1]; 1283 1284 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1285 __func__, 1286 lacp_format_lagid(&la->la_actor, &la->la_partner, 1287 buf, sizeof(buf)), 1288 la->la_refcnt, la->la_refcnt + 1)); 1289 1290 KASSERT(la->la_refcnt > 0, ("refcount <= 0")); 1291 la->la_refcnt++; 1292 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcount")); 1293 } 1294 1295 static void 1296 lacp_aggregator_delref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1297 { 1298 char buf[LACP_LAGIDSTR_MAX+1]; 1299 1300 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1301 __func__, 1302 lacp_format_lagid(&la->la_actor, &la->la_partner, 1303 buf, sizeof(buf)), 1304 la->la_refcnt, la->la_refcnt - 1)); 1305 1306 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcnt")); 1307 la->la_refcnt--; 1308 if (la->la_refcnt > 0) { 1309 return; 1310 } 1311 1312 KASSERT(la->la_refcnt == 0, ("refcount not zero")); 1313 KASSERT(lsc->lsc_active_aggregator != la, ("aggregator active")); 1314 1315 TAILQ_REMOVE(&lsc->lsc_aggregators, la, la_q); 1316 1317 free(la, M_DEVBUF); 1318 } 1319 1320 /* 1321 * lacp_aggregator_get: allocate an aggregator. 1322 */ 1323 1324 static struct lacp_aggregator * 1325 lacp_aggregator_get(struct lacp_softc *lsc, struct lacp_port *lp) 1326 { 1327 struct lacp_aggregator *la; 1328 1329 la = malloc(sizeof(*la), M_DEVBUF, M_NOWAIT); 1330 if (la) { 1331 la->la_refcnt = 1; 1332 la->la_nports = 0; 1333 TAILQ_INIT(&la->la_ports); 1334 la->la_pending = 0; 1335 TAILQ_INSERT_TAIL(&lsc->lsc_aggregators, la, la_q); 1336 } 1337 1338 return (la); 1339 } 1340 1341 /* 1342 * lacp_fill_aggregator_id: setup a newly allocated aggregator from a port. 1343 */ 1344 1345 static void 1346 lacp_fill_aggregator_id(struct lacp_aggregator *la, const struct lacp_port *lp) 1347 { 1348 lacp_fill_aggregator_id_peer(&la->la_partner, &lp->lp_partner); 1349 lacp_fill_aggregator_id_peer(&la->la_actor, &lp->lp_actor); 1350 1351 la->la_actor.lip_state = lp->lp_state & LACP_STATE_AGGREGATION; 1352 } 1353 1354 static void 1355 lacp_fill_aggregator_id_peer(struct lacp_peerinfo *lpi_aggr, 1356 const struct lacp_peerinfo *lpi_port) 1357 { 1358 memset(lpi_aggr, 0, sizeof(*lpi_aggr)); 1359 lpi_aggr->lip_systemid = lpi_port->lip_systemid; 1360 lpi_aggr->lip_key = lpi_port->lip_key; 1361 } 1362 1363 /* 1364 * lacp_aggregator_is_compatible: check if a port can join to an aggregator. 1365 */ 1366 1367 static int 1368 lacp_aggregator_is_compatible(const struct lacp_aggregator *la, 1369 const struct lacp_port *lp) 1370 { 1371 if (!(lp->lp_state & LACP_STATE_AGGREGATION) || 1372 !(lp->lp_partner.lip_state & LACP_STATE_AGGREGATION)) { 1373 return (0); 1374 } 1375 1376 if (!(la->la_actor.lip_state & LACP_STATE_AGGREGATION)) { 1377 return (0); 1378 } 1379 1380 if (!lacp_peerinfo_is_compatible(&la->la_partner, &lp->lp_partner)) { 1381 return (0); 1382 } 1383 1384 if (!lacp_peerinfo_is_compatible(&la->la_actor, &lp->lp_actor)) { 1385 return (0); 1386 } 1387 1388 return (1); 1389 } 1390 1391 static int 1392 lacp_peerinfo_is_compatible(const struct lacp_peerinfo *a, 1393 const struct lacp_peerinfo *b) 1394 { 1395 if (memcmp(&a->lip_systemid, &b->lip_systemid, 1396 sizeof(a->lip_systemid))) { 1397 return (0); 1398 } 1399 1400 if (memcmp(&a->lip_key, &b->lip_key, sizeof(a->lip_key))) { 1401 return (0); 1402 } 1403 1404 return (1); 1405 } 1406 1407 static void 1408 lacp_port_enable(struct lacp_port *lp) 1409 { 1410 lp->lp_state |= LACP_STATE_AGGREGATION; 1411 } 1412 1413 static void 1414 lacp_port_disable(struct lacp_port *lp) 1415 { 1416 lacp_set_mux(lp, LACP_MUX_DETACHED); 1417 1418 lp->lp_state &= ~LACP_STATE_AGGREGATION; 1419 lp->lp_selected = LACP_UNSELECTED; 1420 lacp_sm_rx_record_default(lp); 1421 lp->lp_partner.lip_state &= ~LACP_STATE_AGGREGATION; 1422 lp->lp_state &= ~LACP_STATE_EXPIRED; 1423 } 1424 1425 /* 1426 * lacp_select: select an aggregator. create one if necessary. 1427 */ 1428 static void 1429 lacp_select(struct lacp_port *lp) 1430 { 1431 struct lacp_softc *lsc = lp->lp_lsc; 1432 struct lacp_aggregator *la; 1433 char buf[LACP_LAGIDSTR_MAX+1]; 1434 1435 if (lp->lp_aggregator) { 1436 return; 1437 } 1438 1439 /* If we haven't heard from our peer, skip this step. */ 1440 if (lp->lp_state & LACP_STATE_DEFAULTED) 1441 return; 1442 1443 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1444 ("timer_wait_while still active")); 1445 1446 LACP_DPRINTF((lp, "port lagid=%s\n", 1447 lacp_format_lagid(&lp->lp_actor, &lp->lp_partner, 1448 buf, sizeof(buf)))); 1449 1450 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 1451 if (lacp_aggregator_is_compatible(la, lp)) { 1452 break; 1453 } 1454 } 1455 1456 if (la == NULL) { 1457 la = lacp_aggregator_get(lsc, lp); 1458 if (la == NULL) { 1459 LACP_DPRINTF((lp, "aggregator creation failed\n")); 1460 1461 /* 1462 * will retry on the next tick. 1463 */ 1464 1465 return; 1466 } 1467 lacp_fill_aggregator_id(la, lp); 1468 LACP_DPRINTF((lp, "aggregator created\n")); 1469 } else { 1470 LACP_DPRINTF((lp, "compatible aggregator found\n")); 1471 if (la->la_refcnt == LACP_MAX_PORTS) 1472 return; 1473 lacp_aggregator_addref(lsc, la); 1474 } 1475 1476 LACP_DPRINTF((lp, "aggregator lagid=%s\n", 1477 lacp_format_lagid(&la->la_actor, &la->la_partner, 1478 buf, sizeof(buf)))); 1479 1480 lp->lp_aggregator = la; 1481 lp->lp_selected = LACP_SELECTED; 1482 } 1483 1484 /* 1485 * lacp_unselect: finish unselect/detach process. 1486 */ 1487 1488 static void 1489 lacp_unselect(struct lacp_port *lp) 1490 { 1491 struct lacp_softc *lsc = lp->lp_lsc; 1492 struct lacp_aggregator *la = lp->lp_aggregator; 1493 1494 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1495 ("timer_wait_while still active")); 1496 1497 if (la == NULL) { 1498 return; 1499 } 1500 1501 lp->lp_aggregator = NULL; 1502 lacp_aggregator_delref(lsc, la); 1503 } 1504 1505 /* mux machine */ 1506 1507 static void 1508 lacp_sm_mux(struct lacp_port *lp) 1509 { 1510 struct lagg_port *lgp = lp->lp_lagg; 1511 struct lagg_softc *sc = lgp->lp_softc; 1512 enum lacp_mux_state new_state; 1513 boolean_t p_sync = 1514 (lp->lp_partner.lip_state & LACP_STATE_SYNC) != 0; 1515 boolean_t p_collecting = 1516 (lp->lp_partner.lip_state & LACP_STATE_COLLECTING) != 0; 1517 enum lacp_selected selected = lp->lp_selected; 1518 struct lacp_aggregator *la; 1519 1520 if (V_lacp_debug > 1) 1521 lacp_dprintf(lp, "%s: state= 0x%x, selected= 0x%x, " 1522 "p_sync= 0x%x, p_collecting= 0x%x\n", __func__, 1523 lp->lp_mux_state, selected, p_sync, p_collecting); 1524 1525 re_eval: 1526 la = lp->lp_aggregator; 1527 KASSERT(lp->lp_mux_state == LACP_MUX_DETACHED || la != NULL, 1528 ("MUX not detached")); 1529 new_state = lp->lp_mux_state; 1530 switch (lp->lp_mux_state) { 1531 case LACP_MUX_DETACHED: 1532 if (selected != LACP_UNSELECTED) { 1533 new_state = LACP_MUX_WAITING; 1534 } 1535 break; 1536 case LACP_MUX_WAITING: 1537 KASSERT(la->la_pending > 0 || 1538 !LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1539 ("timer_wait_while still active")); 1540 if (selected == LACP_SELECTED && la->la_pending == 0) { 1541 new_state = LACP_MUX_ATTACHED; 1542 } else if (selected == LACP_UNSELECTED) { 1543 new_state = LACP_MUX_DETACHED; 1544 } 1545 break; 1546 case LACP_MUX_ATTACHED: 1547 if (selected == LACP_SELECTED && p_sync) { 1548 new_state = LACP_MUX_COLLECTING; 1549 } else if (selected != LACP_SELECTED) { 1550 new_state = LACP_MUX_DETACHED; 1551 } 1552 break; 1553 case LACP_MUX_COLLECTING: 1554 if (selected == LACP_SELECTED && p_sync && p_collecting) { 1555 new_state = LACP_MUX_DISTRIBUTING; 1556 } else if (selected != LACP_SELECTED || !p_sync) { 1557 new_state = LACP_MUX_ATTACHED; 1558 } 1559 break; 1560 case LACP_MUX_DISTRIBUTING: 1561 if (selected != LACP_SELECTED || !p_sync || !p_collecting) { 1562 new_state = LACP_MUX_COLLECTING; 1563 lacp_dprintf(lp, "Interface stopped DISTRIBUTING, possible flapping\n"); 1564 sc->sc_flapping++; 1565 } 1566 break; 1567 default: 1568 panic("%s: unknown state", __func__); 1569 } 1570 1571 if (lp->lp_mux_state == new_state) { 1572 return; 1573 } 1574 1575 lacp_set_mux(lp, new_state); 1576 goto re_eval; 1577 } 1578 1579 static void 1580 lacp_set_mux(struct lacp_port *lp, enum lacp_mux_state new_state) 1581 { 1582 struct lacp_aggregator *la = lp->lp_aggregator; 1583 1584 if (lp->lp_mux_state == new_state) { 1585 return; 1586 } 1587 1588 switch (new_state) { 1589 case LACP_MUX_DETACHED: 1590 lp->lp_state &= ~LACP_STATE_SYNC; 1591 lacp_disable_distributing(lp); 1592 lacp_disable_collecting(lp); 1593 lacp_sm_assert_ntt(lp); 1594 /* cancel timer */ 1595 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE)) { 1596 KASSERT(la->la_pending > 0, 1597 ("timer_wait_while not active")); 1598 la->la_pending--; 1599 } 1600 LACP_TIMER_DISARM(lp, LACP_TIMER_WAIT_WHILE); 1601 lacp_unselect(lp); 1602 break; 1603 case LACP_MUX_WAITING: 1604 LACP_TIMER_ARM(lp, LACP_TIMER_WAIT_WHILE, 1605 LACP_AGGREGATE_WAIT_TIME); 1606 la->la_pending++; 1607 break; 1608 case LACP_MUX_ATTACHED: 1609 lp->lp_state |= LACP_STATE_SYNC; 1610 lacp_disable_collecting(lp); 1611 lacp_sm_assert_ntt(lp); 1612 break; 1613 case LACP_MUX_COLLECTING: 1614 lacp_enable_collecting(lp); 1615 lacp_disable_distributing(lp); 1616 lacp_sm_assert_ntt(lp); 1617 break; 1618 case LACP_MUX_DISTRIBUTING: 1619 lacp_enable_distributing(lp); 1620 break; 1621 default: 1622 panic("%s: unknown state", __func__); 1623 } 1624 1625 LACP_DPRINTF((lp, "mux_state %d -> %d\n", lp->lp_mux_state, new_state)); 1626 1627 lp->lp_mux_state = new_state; 1628 } 1629 1630 static void 1631 lacp_sm_mux_timer(struct lacp_port *lp) 1632 { 1633 struct lacp_aggregator *la = lp->lp_aggregator; 1634 char buf[LACP_LAGIDSTR_MAX+1]; 1635 1636 KASSERT(la->la_pending > 0, ("no pending event")); 1637 1638 LACP_DPRINTF((lp, "%s: aggregator %s, pending %d -> %d\n", __func__, 1639 lacp_format_lagid(&la->la_actor, &la->la_partner, 1640 buf, sizeof(buf)), 1641 la->la_pending, la->la_pending - 1)); 1642 1643 la->la_pending--; 1644 } 1645 1646 /* periodic transmit machine */ 1647 1648 static void 1649 lacp_sm_ptx_update_timeout(struct lacp_port *lp, uint8_t oldpstate) 1650 { 1651 if (LACP_STATE_EQ(oldpstate, lp->lp_partner.lip_state, 1652 LACP_STATE_TIMEOUT)) { 1653 return; 1654 } 1655 1656 LACP_DPRINTF((lp, "partner timeout changed\n")); 1657 1658 /* 1659 * FAST_PERIODIC -> SLOW_PERIODIC 1660 * or 1661 * SLOW_PERIODIC (-> PERIODIC_TX) -> FAST_PERIODIC 1662 * 1663 * let lacp_sm_ptx_tx_schedule to update timeout. 1664 */ 1665 1666 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1667 1668 /* 1669 * if timeout has been shortened, assert NTT. 1670 */ 1671 1672 if ((lp->lp_partner.lip_state & LACP_STATE_TIMEOUT)) { 1673 lacp_sm_assert_ntt(lp); 1674 } 1675 } 1676 1677 static void 1678 lacp_sm_ptx_tx_schedule(struct lacp_port *lp) 1679 { 1680 int timeout; 1681 1682 if (!(lp->lp_state & LACP_STATE_ACTIVITY) && 1683 !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) { 1684 /* 1685 * NO_PERIODIC 1686 */ 1687 1688 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1689 return; 1690 } 1691 1692 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_PERIODIC)) { 1693 return; 1694 } 1695 1696 timeout = (lp->lp_partner.lip_state & LACP_STATE_TIMEOUT) ? 1697 LACP_FAST_PERIODIC_TIME : LACP_SLOW_PERIODIC_TIME; 1698 1699 LACP_TIMER_ARM(lp, LACP_TIMER_PERIODIC, timeout); 1700 } 1701 1702 static void 1703 lacp_sm_ptx_timer(struct lacp_port *lp) 1704 { 1705 lacp_sm_assert_ntt(lp); 1706 } 1707 1708 static void 1709 lacp_sm_rx(struct lacp_port *lp, const struct lacpdu *du) 1710 { 1711 int timeout; 1712 1713 /* 1714 * check LACP_DISABLED first 1715 */ 1716 1717 if (!(lp->lp_state & LACP_STATE_AGGREGATION)) { 1718 return; 1719 } 1720 1721 /* 1722 * check loopback condition. 1723 */ 1724 1725 if (!lacp_compare_systemid(&du->ldu_actor.lip_systemid, 1726 &lp->lp_actor.lip_systemid)) { 1727 return; 1728 } 1729 1730 /* 1731 * EXPIRED, DEFAULTED, CURRENT -> CURRENT 1732 */ 1733 1734 microuptime(&lp->lp_last_lacpdu_rx); 1735 lacp_sm_rx_update_selected(lp, du); 1736 lacp_sm_rx_update_ntt(lp, du); 1737 lacp_sm_rx_record_pdu(lp, du); 1738 1739 timeout = (lp->lp_state & LACP_STATE_TIMEOUT) ? 1740 LACP_SHORT_TIMEOUT_TIME : LACP_LONG_TIMEOUT_TIME; 1741 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, timeout); 1742 1743 lp->lp_state &= ~LACP_STATE_EXPIRED; 1744 1745 /* 1746 * kick transmit machine without waiting the next tick. 1747 */ 1748 1749 lacp_sm_tx(lp); 1750 } 1751 1752 static void 1753 lacp_sm_rx_set_expired(struct lacp_port *lp) 1754 { 1755 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1756 lp->lp_partner.lip_state |= LACP_STATE_TIMEOUT; 1757 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, LACP_SHORT_TIMEOUT_TIME); 1758 lp->lp_state |= LACP_STATE_EXPIRED; 1759 } 1760 1761 static void 1762 lacp_sm_rx_timer(struct lacp_port *lp) 1763 { 1764 if ((lp->lp_state & LACP_STATE_EXPIRED) == 0) { 1765 /* CURRENT -> EXPIRED */ 1766 LACP_DPRINTF((lp, "%s: CURRENT -> EXPIRED\n", __func__)); 1767 lacp_sm_rx_set_expired(lp); 1768 } else { 1769 /* EXPIRED -> DEFAULTED */ 1770 LACP_DPRINTF((lp, "%s: EXPIRED -> DEFAULTED\n", __func__)); 1771 lacp_sm_rx_update_default_selected(lp); 1772 lacp_sm_rx_record_default(lp); 1773 lp->lp_state &= ~LACP_STATE_EXPIRED; 1774 } 1775 } 1776 1777 static void 1778 lacp_sm_rx_record_pdu(struct lacp_port *lp, const struct lacpdu *du) 1779 { 1780 boolean_t active; 1781 uint8_t oldpstate; 1782 char buf[LACP_STATESTR_MAX+1]; 1783 1784 LACP_TRACE(lp); 1785 1786 oldpstate = lp->lp_partner.lip_state; 1787 1788 active = (du->ldu_actor.lip_state & LACP_STATE_ACTIVITY) 1789 || ((lp->lp_state & LACP_STATE_ACTIVITY) && 1790 (du->ldu_partner.lip_state & LACP_STATE_ACTIVITY)); 1791 1792 lp->lp_partner = du->ldu_actor; 1793 if (active && 1794 ((LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1795 LACP_STATE_AGGREGATION) && 1796 !lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner)) 1797 || (du->ldu_partner.lip_state & LACP_STATE_AGGREGATION) == 0)) { 1798 /* 1799 * XXX Maintain legacy behavior of leaving the 1800 * LACP_STATE_SYNC bit unchanged from the partner's 1801 * advertisement if lsc_strict_mode is false. 1802 * TODO: We should re-examine the concept of the "strict mode" 1803 * to ensure it makes sense to maintain a non-strict mode. 1804 */ 1805 if (lp->lp_lsc->lsc_strict_mode) 1806 lp->lp_partner.lip_state |= LACP_STATE_SYNC; 1807 } else { 1808 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1809 } 1810 1811 lp->lp_state &= ~LACP_STATE_DEFAULTED; 1812 1813 if (oldpstate != lp->lp_partner.lip_state) { 1814 LACP_DPRINTF((lp, "old pstate %s\n", 1815 lacp_format_state(oldpstate, buf, sizeof(buf)))); 1816 LACP_DPRINTF((lp, "new pstate %s\n", 1817 lacp_format_state(lp->lp_partner.lip_state, buf, 1818 sizeof(buf)))); 1819 } 1820 1821 lacp_sm_ptx_update_timeout(lp, oldpstate); 1822 } 1823 1824 static void 1825 lacp_sm_rx_update_ntt(struct lacp_port *lp, const struct lacpdu *du) 1826 { 1827 1828 LACP_TRACE(lp); 1829 1830 if (lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner) || 1831 !LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1832 LACP_STATE_ACTIVITY | LACP_STATE_SYNC | LACP_STATE_AGGREGATION)) { 1833 LACP_DPRINTF((lp, "%s: assert ntt\n", __func__)); 1834 lacp_sm_assert_ntt(lp); 1835 } 1836 } 1837 1838 static void 1839 lacp_sm_rx_record_default(struct lacp_port *lp) 1840 { 1841 uint8_t oldpstate; 1842 1843 LACP_TRACE(lp); 1844 1845 oldpstate = lp->lp_partner.lip_state; 1846 if (lp->lp_lsc->lsc_strict_mode) 1847 lp->lp_partner = lacp_partner_admin_strict; 1848 else 1849 lp->lp_partner = lacp_partner_admin_optimistic; 1850 lp->lp_state |= LACP_STATE_DEFAULTED; 1851 lacp_sm_ptx_update_timeout(lp, oldpstate); 1852 } 1853 1854 static void 1855 lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *lp, 1856 const struct lacp_peerinfo *info) 1857 { 1858 1859 LACP_TRACE(lp); 1860 1861 if (lacp_compare_peerinfo(&lp->lp_partner, info) || 1862 !LACP_STATE_EQ(lp->lp_partner.lip_state, info->lip_state, 1863 LACP_STATE_AGGREGATION)) { 1864 lp->lp_selected = LACP_UNSELECTED; 1865 /* mux machine will clean up lp->lp_aggregator */ 1866 } 1867 } 1868 1869 static void 1870 lacp_sm_rx_update_selected(struct lacp_port *lp, const struct lacpdu *du) 1871 { 1872 1873 LACP_TRACE(lp); 1874 1875 lacp_sm_rx_update_selected_from_peerinfo(lp, &du->ldu_actor); 1876 } 1877 1878 static void 1879 lacp_sm_rx_update_default_selected(struct lacp_port *lp) 1880 { 1881 1882 LACP_TRACE(lp); 1883 1884 if (lp->lp_lsc->lsc_strict_mode) 1885 lacp_sm_rx_update_selected_from_peerinfo(lp, 1886 &lacp_partner_admin_strict); 1887 else 1888 lacp_sm_rx_update_selected_from_peerinfo(lp, 1889 &lacp_partner_admin_optimistic); 1890 } 1891 1892 /* transmit machine */ 1893 1894 static void 1895 lacp_sm_tx(struct lacp_port *lp) 1896 { 1897 int error = 0; 1898 1899 if (!(lp->lp_state & LACP_STATE_AGGREGATION) 1900 #if 1 1901 || (!(lp->lp_state & LACP_STATE_ACTIVITY) 1902 && !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) 1903 #endif 1904 ) { 1905 lp->lp_flags &= ~LACP_PORT_NTT; 1906 } 1907 1908 if (!(lp->lp_flags & LACP_PORT_NTT)) { 1909 return; 1910 } 1911 1912 /* Rate limit to 3 PDUs per LACP_FAST_PERIODIC_TIME */ 1913 if (ppsratecheck(&lp->lp_last_lacpdu, &lp->lp_lacpdu_sent, 1914 (3 / LACP_FAST_PERIODIC_TIME)) == 0) { 1915 LACP_DPRINTF((lp, "rate limited pdu\n")); 1916 return; 1917 } 1918 1919 if (((1 << lp->lp_ifp->if_dunit) & lp->lp_lsc->lsc_debug.lsc_tx_test) == 0) { 1920 error = lacp_xmit_lacpdu(lp); 1921 } else { 1922 LACP_TPRINTF((lp, "Dropping TX PDU\n")); 1923 } 1924 1925 if (error == 0) { 1926 lp->lp_flags &= ~LACP_PORT_NTT; 1927 } else { 1928 LACP_DPRINTF((lp, "lacpdu transmit failure, error %d\n", 1929 error)); 1930 } 1931 } 1932 1933 static void 1934 lacp_sm_assert_ntt(struct lacp_port *lp) 1935 { 1936 1937 lp->lp_flags |= LACP_PORT_NTT; 1938 } 1939 1940 static void 1941 lacp_run_timers(struct lacp_port *lp) 1942 { 1943 int i; 1944 struct timeval time_diff; 1945 1946 for (i = 0; i < LACP_NTIMER; i++) { 1947 KASSERT(lp->lp_timer[i] >= 0, 1948 ("invalid timer value %d", lp->lp_timer[i])); 1949 if (lp->lp_timer[i] == 0) { 1950 continue; 1951 } else { 1952 if (i == LACP_TIMER_CURRENT_WHILE) { 1953 microuptime(&time_diff); 1954 timevalsub(&time_diff, &lp->lp_last_lacpdu_rx); 1955 if (time_diff.tv_sec) { 1956 /* At least one sec has elapsed since last LACP packet. */ 1957 --lp->lp_timer[i]; 1958 } 1959 } else { 1960 --lp->lp_timer[i]; 1961 } 1962 1963 if ((lp->lp_timer[i] <= 0) && (lacp_timer_funcs[i])) { 1964 (*lacp_timer_funcs[i])(lp); 1965 } 1966 } 1967 } 1968 } 1969 1970 int 1971 lacp_marker_input(struct lacp_port *lp, struct mbuf *m) 1972 { 1973 struct lacp_softc *lsc = lp->lp_lsc; 1974 struct lagg_port *lgp = lp->lp_lagg; 1975 struct lacp_port *lp2; 1976 struct markerdu *mdu; 1977 int error = 0; 1978 int pending = 0; 1979 1980 if (m->m_pkthdr.len != sizeof(*mdu)) { 1981 goto bad; 1982 } 1983 1984 if ((m->m_flags & M_MCAST) == 0) { 1985 goto bad; 1986 } 1987 1988 if (m->m_len < sizeof(*mdu)) { 1989 m = m_pullup(m, sizeof(*mdu)); 1990 if (m == NULL) { 1991 return (ENOMEM); 1992 } 1993 } 1994 1995 mdu = mtod(m, struct markerdu *); 1996 1997 if (memcmp(&mdu->mdu_eh.ether_dhost, 1998 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 1999 goto bad; 2000 } 2001 2002 if (mdu->mdu_sph.sph_version != 1) { 2003 goto bad; 2004 } 2005 2006 switch (mdu->mdu_tlv.tlv_type) { 2007 case MARKER_TYPE_INFO: 2008 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 2009 marker_info_tlv_template, TRUE)) { 2010 goto bad; 2011 } 2012 mdu->mdu_tlv.tlv_type = MARKER_TYPE_RESPONSE; 2013 memcpy(&mdu->mdu_eh.ether_dhost, 2014 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN); 2015 memcpy(&mdu->mdu_eh.ether_shost, 2016 lgp->lp_lladdr, ETHER_ADDR_LEN); 2017 error = lagg_enqueue(lp->lp_ifp, m); 2018 break; 2019 2020 case MARKER_TYPE_RESPONSE: 2021 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 2022 marker_response_tlv_template, TRUE)) { 2023 goto bad; 2024 } 2025 LACP_DPRINTF((lp, "marker response, port=%u, sys=%6D, id=%u\n", 2026 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, 2027 ":", ntohl(mdu->mdu_info.mi_rq_xid))); 2028 2029 /* Verify that it is the last marker we sent out */ 2030 if (memcmp(&mdu->mdu_info, &lp->lp_marker, 2031 sizeof(struct lacp_markerinfo))) 2032 goto bad; 2033 2034 LACP_LOCK(lsc); 2035 lp->lp_flags &= ~LACP_PORT_MARK; 2036 2037 if (lsc->lsc_suppress_distributing) { 2038 /* Check if any ports are waiting for a response */ 2039 LIST_FOREACH(lp2, &lsc->lsc_ports, lp_next) { 2040 if (lp2->lp_flags & LACP_PORT_MARK) { 2041 pending = 1; 2042 break; 2043 } 2044 } 2045 2046 if (pending == 0) { 2047 /* All interface queues are clear */ 2048 LACP_DPRINTF((NULL, "queue flush complete\n")); 2049 lsc->lsc_suppress_distributing = FALSE; 2050 } 2051 } 2052 LACP_UNLOCK(lsc); 2053 m_freem(m); 2054 break; 2055 2056 default: 2057 goto bad; 2058 } 2059 2060 return (error); 2061 2062 bad: 2063 LACP_DPRINTF((lp, "bad marker frame\n")); 2064 m_freem(m); 2065 return (EINVAL); 2066 } 2067 2068 static int 2069 tlv_check(const void *p, size_t size, const struct tlvhdr *tlv, 2070 const struct tlv_template *tmpl, boolean_t check_type) 2071 { 2072 while (/* CONSTCOND */ 1) { 2073 if ((const char *)tlv - (const char *)p + sizeof(*tlv) > size) { 2074 return (EINVAL); 2075 } 2076 if ((check_type && tlv->tlv_type != tmpl->tmpl_type) || 2077 tlv->tlv_length != tmpl->tmpl_length) { 2078 return (EINVAL); 2079 } 2080 if (tmpl->tmpl_type == 0) { 2081 break; 2082 } 2083 tlv = (const struct tlvhdr *) 2084 ((const char *)tlv + tlv->tlv_length); 2085 tmpl++; 2086 } 2087 2088 return (0); 2089 } 2090 2091 /* Debugging */ 2092 const char * 2093 lacp_format_mac(const uint8_t *mac, char *buf, size_t buflen) 2094 { 2095 snprintf(buf, buflen, "%02X-%02X-%02X-%02X-%02X-%02X", 2096 (int)mac[0], 2097 (int)mac[1], 2098 (int)mac[2], 2099 (int)mac[3], 2100 (int)mac[4], 2101 (int)mac[5]); 2102 2103 return (buf); 2104 } 2105 2106 const char * 2107 lacp_format_systemid(const struct lacp_systemid *sysid, 2108 char *buf, size_t buflen) 2109 { 2110 char macbuf[LACP_MACSTR_MAX+1]; 2111 2112 snprintf(buf, buflen, "%04X,%s", 2113 ntohs(sysid->lsi_prio), 2114 lacp_format_mac(sysid->lsi_mac, macbuf, sizeof(macbuf))); 2115 2116 return (buf); 2117 } 2118 2119 const char * 2120 lacp_format_portid(const struct lacp_portid *portid, char *buf, size_t buflen) 2121 { 2122 snprintf(buf, buflen, "%04X,%04X", 2123 ntohs(portid->lpi_prio), 2124 ntohs(portid->lpi_portno)); 2125 2126 return (buf); 2127 } 2128 2129 const char * 2130 lacp_format_partner(const struct lacp_peerinfo *peer, char *buf, size_t buflen) 2131 { 2132 char sysid[LACP_SYSTEMIDSTR_MAX+1]; 2133 char portid[LACP_PORTIDSTR_MAX+1]; 2134 2135 snprintf(buf, buflen, "(%s,%04X,%s)", 2136 lacp_format_systemid(&peer->lip_systemid, sysid, sizeof(sysid)), 2137 ntohs(peer->lip_key), 2138 lacp_format_portid(&peer->lip_portid, portid, sizeof(portid))); 2139 2140 return (buf); 2141 } 2142 2143 const char * 2144 lacp_format_lagid(const struct lacp_peerinfo *a, 2145 const struct lacp_peerinfo *b, char *buf, size_t buflen) 2146 { 2147 char astr[LACP_PARTNERSTR_MAX+1]; 2148 char bstr[LACP_PARTNERSTR_MAX+1]; 2149 2150 #if 0 2151 /* 2152 * there's a convention to display small numbered peer 2153 * in the left. 2154 */ 2155 2156 if (lacp_compare_peerinfo(a, b) > 0) { 2157 const struct lacp_peerinfo *t; 2158 2159 t = a; 2160 a = b; 2161 b = t; 2162 } 2163 #endif 2164 2165 snprintf(buf, buflen, "[%s,%s]", 2166 lacp_format_partner(a, astr, sizeof(astr)), 2167 lacp_format_partner(b, bstr, sizeof(bstr))); 2168 2169 return (buf); 2170 } 2171 2172 const char * 2173 lacp_format_lagid_aggregator(const struct lacp_aggregator *la, 2174 char *buf, size_t buflen) 2175 { 2176 if (la == NULL) { 2177 return ("(none)"); 2178 } 2179 2180 return (lacp_format_lagid(&la->la_actor, &la->la_partner, buf, buflen)); 2181 } 2182 2183 const char * 2184 lacp_format_state(uint8_t state, char *buf, size_t buflen) 2185 { 2186 snprintf(buf, buflen, "%b", state, LACP_STATE_BITS); 2187 return (buf); 2188 } 2189 2190 static void 2191 lacp_dump_lacpdu(const struct lacpdu *du) 2192 { 2193 char buf[LACP_PARTNERSTR_MAX+1]; 2194 char buf2[LACP_STATESTR_MAX+1]; 2195 2196 printf("actor=%s\n", 2197 lacp_format_partner(&du->ldu_actor, buf, sizeof(buf))); 2198 printf("actor.state=%s\n", 2199 lacp_format_state(du->ldu_actor.lip_state, buf2, sizeof(buf2))); 2200 printf("partner=%s\n", 2201 lacp_format_partner(&du->ldu_partner, buf, sizeof(buf))); 2202 printf("partner.state=%s\n", 2203 lacp_format_state(du->ldu_partner.lip_state, buf2, sizeof(buf2))); 2204 2205 printf("maxdelay=%d\n", ntohs(du->ldu_collector.lci_maxdelay)); 2206 } 2207 2208 static void 2209 lacp_dprintf(const struct lacp_port *lp, const char *fmt, ...) 2210 { 2211 va_list va; 2212 2213 if (lp) { 2214 printf("%s: ", lp->lp_ifp->if_xname); 2215 } 2216 2217 va_start(va, fmt); 2218 vprintf(fmt, va); 2219 va_end(va); 2220 } 2221