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_ratelimit.h" 36 37 #include <sys/param.h> 38 #include <sys/callout.h> 39 #include <sys/eventhandler.h> 40 #include <sys/mbuf.h> 41 #include <sys/systm.h> 42 #include <sys/malloc.h> 43 #include <sys/kernel.h> /* hz */ 44 #include <sys/socket.h> /* for net/if.h */ 45 #include <sys/sockio.h> 46 #include <sys/sysctl.h> 47 #include <machine/stdarg.h> 48 #include <sys/lock.h> 49 #include <sys/rwlock.h> 50 #include <sys/taskqueue.h> 51 52 #include <net/if.h> 53 #include <net/if_var.h> 54 #include <net/if_dl.h> 55 #include <net/ethernet.h> 56 #include <net/if_media.h> 57 #include <net/if_types.h> 58 59 #include <net/if_lagg.h> 60 #include <net/ieee8023ad_lacp.h> 61 62 /* 63 * actor system priority and port priority. 64 * XXX should be configurable. 65 */ 66 67 #define LACP_SYSTEM_PRIO 0x8000 68 #define LACP_PORT_PRIO 0x8000 69 70 const uint8_t ethermulticastaddr_slowprotocols[ETHER_ADDR_LEN] = 71 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x02 }; 72 73 static const struct tlv_template lacp_info_tlv_template[] = { 74 { LACP_TYPE_ACTORINFO, 75 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) }, 76 { LACP_TYPE_PARTNERINFO, 77 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) }, 78 { LACP_TYPE_COLLECTORINFO, 79 sizeof(struct tlvhdr) + sizeof(struct lacp_collectorinfo) }, 80 { 0, 0 }, 81 }; 82 83 static const struct tlv_template marker_info_tlv_template[] = { 84 { MARKER_TYPE_INFO, 85 sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) }, 86 { 0, 0 }, 87 }; 88 89 static const struct tlv_template marker_response_tlv_template[] = { 90 { MARKER_TYPE_RESPONSE, 91 sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) }, 92 { 0, 0 }, 93 }; 94 95 typedef void (*lacp_timer_func_t)(struct lacp_port *); 96 97 static void lacp_fill_actorinfo(struct lacp_port *, struct lacp_peerinfo *); 98 static void lacp_fill_markerinfo(struct lacp_port *, 99 struct lacp_markerinfo *); 100 101 static uint64_t lacp_aggregator_bandwidth(struct lacp_aggregator *); 102 static void lacp_suppress_distributing(struct lacp_softc *, 103 struct lacp_aggregator *); 104 static void lacp_transit_expire(void *); 105 static void lacp_update_portmap(struct lacp_softc *); 106 static void lacp_select_active_aggregator(struct lacp_softc *); 107 static uint16_t lacp_compose_key(struct lacp_port *); 108 static int tlv_check(const void *, size_t, const struct tlvhdr *, 109 const struct tlv_template *, boolean_t); 110 static void lacp_tick(void *); 111 112 static void lacp_fill_aggregator_id(struct lacp_aggregator *, 113 const struct lacp_port *); 114 static void lacp_fill_aggregator_id_peer(struct lacp_peerinfo *, 115 const struct lacp_peerinfo *); 116 static int lacp_aggregator_is_compatible(const struct lacp_aggregator *, 117 const struct lacp_port *); 118 static int lacp_peerinfo_is_compatible(const struct lacp_peerinfo *, 119 const struct lacp_peerinfo *); 120 121 static struct lacp_aggregator *lacp_aggregator_get(struct lacp_softc *, 122 struct lacp_port *); 123 static void lacp_aggregator_addref(struct lacp_softc *, 124 struct lacp_aggregator *); 125 static void lacp_aggregator_delref(struct lacp_softc *, 126 struct lacp_aggregator *); 127 128 /* receive machine */ 129 130 static int lacp_pdu_input(struct lacp_port *, struct mbuf *); 131 static int lacp_marker_input(struct lacp_port *, struct mbuf *); 132 static void lacp_sm_rx(struct lacp_port *, const struct lacpdu *); 133 static void lacp_sm_rx_timer(struct lacp_port *); 134 static void lacp_sm_rx_set_expired(struct lacp_port *); 135 static void lacp_sm_rx_update_ntt(struct lacp_port *, 136 const struct lacpdu *); 137 static void lacp_sm_rx_record_pdu(struct lacp_port *, 138 const struct lacpdu *); 139 static void lacp_sm_rx_update_selected(struct lacp_port *, 140 const struct lacpdu *); 141 static void lacp_sm_rx_record_default(struct lacp_port *); 142 static void lacp_sm_rx_update_default_selected(struct lacp_port *); 143 static void lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *, 144 const struct lacp_peerinfo *); 145 146 /* mux machine */ 147 148 static void lacp_sm_mux(struct lacp_port *); 149 static void lacp_set_mux(struct lacp_port *, enum lacp_mux_state); 150 static void lacp_sm_mux_timer(struct lacp_port *); 151 152 /* periodic transmit machine */ 153 154 static void lacp_sm_ptx_update_timeout(struct lacp_port *, uint8_t); 155 static void lacp_sm_ptx_tx_schedule(struct lacp_port *); 156 static void lacp_sm_ptx_timer(struct lacp_port *); 157 158 /* transmit machine */ 159 160 static void lacp_sm_tx(struct lacp_port *); 161 static void lacp_sm_assert_ntt(struct lacp_port *); 162 163 static void lacp_run_timers(struct lacp_port *); 164 static int lacp_compare_peerinfo(const struct lacp_peerinfo *, 165 const struct lacp_peerinfo *); 166 static int lacp_compare_systemid(const struct lacp_systemid *, 167 const struct lacp_systemid *); 168 static void lacp_port_enable(struct lacp_port *); 169 static void lacp_port_disable(struct lacp_port *); 170 static void lacp_select(struct lacp_port *); 171 static void lacp_unselect(struct lacp_port *); 172 static void lacp_disable_collecting(struct lacp_port *); 173 static void lacp_enable_collecting(struct lacp_port *); 174 static void lacp_disable_distributing(struct lacp_port *); 175 static void lacp_enable_distributing(struct lacp_port *); 176 static int lacp_xmit_lacpdu(struct lacp_port *); 177 static int lacp_xmit_marker(struct lacp_port *); 178 179 /* Debugging */ 180 181 static void lacp_dump_lacpdu(const struct lacpdu *); 182 static const char *lacp_format_partner(const struct lacp_peerinfo *, char *, 183 size_t); 184 static const char *lacp_format_lagid(const struct lacp_peerinfo *, 185 const struct lacp_peerinfo *, char *, size_t); 186 static const char *lacp_format_lagid_aggregator(const struct lacp_aggregator *, 187 char *, size_t); 188 static const char *lacp_format_state(uint8_t, char *, size_t); 189 static const char *lacp_format_mac(const uint8_t *, char *, size_t); 190 static const char *lacp_format_systemid(const struct lacp_systemid *, char *, 191 size_t); 192 static const char *lacp_format_portid(const struct lacp_portid *, char *, 193 size_t); 194 static void lacp_dprintf(const struct lacp_port *, const char *, ...) 195 __attribute__((__format__(__printf__, 2, 3))); 196 197 VNET_DEFINE_STATIC(int, lacp_debug); 198 #define V_lacp_debug VNET(lacp_debug) 199 SYSCTL_NODE(_net_link_lagg, OID_AUTO, lacp, CTLFLAG_RD, 0, "ieee802.3ad"); 200 SYSCTL_INT(_net_link_lagg_lacp, OID_AUTO, debug, CTLFLAG_RWTUN | CTLFLAG_VNET, 201 &VNET_NAME(lacp_debug), 0, "Enable LACP debug logging (1=debug, 2=trace)"); 202 203 VNET_DEFINE_STATIC(int, lacp_default_strict_mode) = 1; 204 SYSCTL_INT(_net_link_lagg_lacp, OID_AUTO, default_strict_mode, 205 CTLFLAG_RWTUN | CTLFLAG_VNET, &VNET_NAME(lacp_default_strict_mode), 0, 206 "LACP strict protocol compliance default"); 207 208 #define LACP_DPRINTF(a) if (V_lacp_debug & 0x01) { lacp_dprintf a ; } 209 #define LACP_TRACE(a) if (V_lacp_debug & 0x02) { lacp_dprintf(a,"%s\n",__func__); } 210 #define LACP_TPRINTF(a) if (V_lacp_debug & 0x04) { lacp_dprintf a ; } 211 212 /* 213 * partner administration variables. 214 * XXX should be configurable. 215 */ 216 217 static const struct lacp_peerinfo lacp_partner_admin_optimistic = { 218 .lip_systemid = { .lsi_prio = 0xffff }, 219 .lip_portid = { .lpi_prio = 0xffff }, 220 .lip_state = LACP_STATE_SYNC | LACP_STATE_AGGREGATION | 221 LACP_STATE_COLLECTING | LACP_STATE_DISTRIBUTING, 222 }; 223 224 static const struct lacp_peerinfo lacp_partner_admin_strict = { 225 .lip_systemid = { .lsi_prio = 0xffff }, 226 .lip_portid = { .lpi_prio = 0xffff }, 227 .lip_state = 0, 228 }; 229 230 static const lacp_timer_func_t lacp_timer_funcs[LACP_NTIMER] = { 231 [LACP_TIMER_CURRENT_WHILE] = lacp_sm_rx_timer, 232 [LACP_TIMER_PERIODIC] = lacp_sm_ptx_timer, 233 [LACP_TIMER_WAIT_WHILE] = lacp_sm_mux_timer, 234 }; 235 236 struct mbuf * 237 lacp_input(struct lagg_port *lgp, struct mbuf *m) 238 { 239 struct lacp_port *lp = LACP_PORT(lgp); 240 uint8_t subtype; 241 242 if (m->m_pkthdr.len < sizeof(struct ether_header) + sizeof(subtype)) { 243 m_freem(m); 244 return (NULL); 245 } 246 247 m_copydata(m, sizeof(struct ether_header), sizeof(subtype), &subtype); 248 switch (subtype) { 249 case SLOWPROTOCOLS_SUBTYPE_LACP: 250 lacp_pdu_input(lp, m); 251 return (NULL); 252 253 case SLOWPROTOCOLS_SUBTYPE_MARKER: 254 lacp_marker_input(lp, m); 255 return (NULL); 256 } 257 258 /* Not a subtype we are interested in */ 259 return (m); 260 } 261 262 /* 263 * lacp_pdu_input: process lacpdu 264 */ 265 static int 266 lacp_pdu_input(struct lacp_port *lp, struct mbuf *m) 267 { 268 struct lacp_softc *lsc = lp->lp_lsc; 269 struct lacpdu *du; 270 int error = 0; 271 272 if (m->m_pkthdr.len != sizeof(*du)) { 273 goto bad; 274 } 275 276 if ((m->m_flags & M_MCAST) == 0) { 277 goto bad; 278 } 279 280 if (m->m_len < sizeof(*du)) { 281 m = m_pullup(m, sizeof(*du)); 282 if (m == NULL) { 283 return (ENOMEM); 284 } 285 } 286 287 du = mtod(m, struct lacpdu *); 288 289 if (memcmp(&du->ldu_eh.ether_dhost, 290 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 291 goto bad; 292 } 293 294 /* 295 * ignore the version for compatibility with 296 * the future protocol revisions. 297 */ 298 #if 0 299 if (du->ldu_sph.sph_version != 1) { 300 goto bad; 301 } 302 #endif 303 304 /* 305 * ignore tlv types for compatibility with 306 * the future protocol revisions. 307 */ 308 if (tlv_check(du, sizeof(*du), &du->ldu_tlv_actor, 309 lacp_info_tlv_template, FALSE)) { 310 goto bad; 311 } 312 313 if (V_lacp_debug > 0) { 314 lacp_dprintf(lp, "lacpdu receive\n"); 315 lacp_dump_lacpdu(du); 316 } 317 318 if ((1 << lp->lp_ifp->if_dunit) & lp->lp_lsc->lsc_debug.lsc_rx_test) { 319 LACP_TPRINTF((lp, "Dropping RX PDU\n")); 320 goto bad; 321 } 322 323 LACP_LOCK(lsc); 324 lacp_sm_rx(lp, du); 325 LACP_UNLOCK(lsc); 326 327 m_freem(m); 328 return (error); 329 330 bad: 331 m_freem(m); 332 return (EINVAL); 333 } 334 335 static void 336 lacp_fill_actorinfo(struct lacp_port *lp, struct lacp_peerinfo *info) 337 { 338 struct lagg_port *lgp = lp->lp_lagg; 339 struct lagg_softc *sc = lgp->lp_softc; 340 341 info->lip_systemid.lsi_prio = htons(LACP_SYSTEM_PRIO); 342 memcpy(&info->lip_systemid.lsi_mac, 343 IF_LLADDR(sc->sc_ifp), ETHER_ADDR_LEN); 344 info->lip_portid.lpi_prio = htons(LACP_PORT_PRIO); 345 info->lip_portid.lpi_portno = htons(lp->lp_ifp->if_index); 346 info->lip_state = lp->lp_state; 347 } 348 349 static void 350 lacp_fill_markerinfo(struct lacp_port *lp, struct lacp_markerinfo *info) 351 { 352 struct ifnet *ifp = lp->lp_ifp; 353 354 /* Fill in the port index and system id (encoded as the MAC) */ 355 info->mi_rq_port = htons(ifp->if_index); 356 memcpy(&info->mi_rq_system, lp->lp_systemid.lsi_mac, ETHER_ADDR_LEN); 357 info->mi_rq_xid = htonl(0); 358 } 359 360 static int 361 lacp_xmit_lacpdu(struct lacp_port *lp) 362 { 363 struct lagg_port *lgp = lp->lp_lagg; 364 struct mbuf *m; 365 struct lacpdu *du; 366 int error; 367 368 LACP_LOCK_ASSERT(lp->lp_lsc); 369 370 m = m_gethdr(M_NOWAIT, MT_DATA); 371 if (m == NULL) { 372 return (ENOMEM); 373 } 374 m->m_len = m->m_pkthdr.len = sizeof(*du); 375 376 du = mtod(m, struct lacpdu *); 377 memset(du, 0, sizeof(*du)); 378 379 memcpy(&du->ldu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 380 ETHER_ADDR_LEN); 381 memcpy(&du->ldu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN); 382 du->ldu_eh.ether_type = htons(ETHERTYPE_SLOW); 383 384 du->ldu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_LACP; 385 du->ldu_sph.sph_version = 1; 386 387 TLV_SET(&du->ldu_tlv_actor, LACP_TYPE_ACTORINFO, sizeof(du->ldu_actor)); 388 du->ldu_actor = lp->lp_actor; 389 390 TLV_SET(&du->ldu_tlv_partner, LACP_TYPE_PARTNERINFO, 391 sizeof(du->ldu_partner)); 392 du->ldu_partner = lp->lp_partner; 393 394 TLV_SET(&du->ldu_tlv_collector, LACP_TYPE_COLLECTORINFO, 395 sizeof(du->ldu_collector)); 396 du->ldu_collector.lci_maxdelay = 0; 397 398 if (V_lacp_debug > 0) { 399 lacp_dprintf(lp, "lacpdu transmit\n"); 400 lacp_dump_lacpdu(du); 401 } 402 403 m->m_flags |= M_MCAST; 404 405 /* 406 * XXX should use higher priority queue. 407 * otherwise network congestion can break aggregation. 408 */ 409 410 error = lagg_enqueue(lp->lp_ifp, m); 411 return (error); 412 } 413 414 static int 415 lacp_xmit_marker(struct lacp_port *lp) 416 { 417 struct lagg_port *lgp = lp->lp_lagg; 418 struct mbuf *m; 419 struct markerdu *mdu; 420 int error; 421 422 LACP_LOCK_ASSERT(lp->lp_lsc); 423 424 m = m_gethdr(M_NOWAIT, MT_DATA); 425 if (m == NULL) { 426 return (ENOMEM); 427 } 428 m->m_len = m->m_pkthdr.len = sizeof(*mdu); 429 430 mdu = mtod(m, struct markerdu *); 431 memset(mdu, 0, sizeof(*mdu)); 432 433 memcpy(&mdu->mdu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 434 ETHER_ADDR_LEN); 435 memcpy(&mdu->mdu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN); 436 mdu->mdu_eh.ether_type = htons(ETHERTYPE_SLOW); 437 438 mdu->mdu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_MARKER; 439 mdu->mdu_sph.sph_version = 1; 440 441 /* Bump the transaction id and copy over the marker info */ 442 lp->lp_marker.mi_rq_xid = htonl(ntohl(lp->lp_marker.mi_rq_xid) + 1); 443 TLV_SET(&mdu->mdu_tlv, MARKER_TYPE_INFO, sizeof(mdu->mdu_info)); 444 mdu->mdu_info = lp->lp_marker; 445 446 LACP_DPRINTF((lp, "marker transmit, port=%u, sys=%6D, id=%u\n", 447 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, ":", 448 ntohl(mdu->mdu_info.mi_rq_xid))); 449 450 m->m_flags |= M_MCAST; 451 error = lagg_enqueue(lp->lp_ifp, m); 452 return (error); 453 } 454 455 void 456 lacp_linkstate(struct lagg_port *lgp) 457 { 458 struct lacp_port *lp = LACP_PORT(lgp); 459 struct lacp_softc *lsc = lp->lp_lsc; 460 struct ifnet *ifp = lgp->lp_ifp; 461 struct ifmediareq ifmr; 462 int error = 0; 463 u_int media; 464 uint8_t old_state; 465 uint16_t old_key; 466 467 bzero((char *)&ifmr, sizeof(ifmr)); 468 error = (*ifp->if_ioctl)(ifp, SIOCGIFXMEDIA, (caddr_t)&ifmr); 469 if (error != 0) { 470 bzero((char *)&ifmr, sizeof(ifmr)); 471 error = (*ifp->if_ioctl)(ifp, SIOCGIFMEDIA, (caddr_t)&ifmr); 472 } 473 if (error != 0) 474 return; 475 476 LACP_LOCK(lsc); 477 media = ifmr.ifm_active; 478 LACP_DPRINTF((lp, "media changed 0x%x -> 0x%x, ether = %d, fdx = %d, " 479 "link = %d\n", lp->lp_media, media, IFM_TYPE(media) == IFM_ETHER, 480 (media & IFM_FDX) != 0, ifp->if_link_state == LINK_STATE_UP)); 481 old_state = lp->lp_state; 482 old_key = lp->lp_key; 483 484 lp->lp_media = media; 485 /* 486 * If the port is not an active full duplex Ethernet link then it can 487 * not be aggregated. 488 */ 489 if (IFM_TYPE(media) != IFM_ETHER || (media & IFM_FDX) == 0 || 490 ifp->if_link_state != LINK_STATE_UP) { 491 lacp_port_disable(lp); 492 } else { 493 lacp_port_enable(lp); 494 } 495 lp->lp_key = lacp_compose_key(lp); 496 497 if (old_state != lp->lp_state || old_key != lp->lp_key) { 498 LACP_DPRINTF((lp, "-> UNSELECTED\n")); 499 lp->lp_selected = LACP_UNSELECTED; 500 } 501 LACP_UNLOCK(lsc); 502 } 503 504 static void 505 lacp_tick(void *arg) 506 { 507 struct lacp_softc *lsc = arg; 508 struct lacp_port *lp; 509 510 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { 511 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) 512 continue; 513 514 CURVNET_SET(lp->lp_ifp->if_vnet); 515 lacp_run_timers(lp); 516 517 lacp_select(lp); 518 lacp_sm_mux(lp); 519 lacp_sm_tx(lp); 520 lacp_sm_ptx_tx_schedule(lp); 521 CURVNET_RESTORE(); 522 } 523 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc); 524 } 525 526 int 527 lacp_port_create(struct lagg_port *lgp) 528 { 529 struct lagg_softc *sc = lgp->lp_softc; 530 struct lacp_softc *lsc = LACP_SOFTC(sc); 531 struct lacp_port *lp; 532 struct ifnet *ifp = lgp->lp_ifp; 533 struct sockaddr_dl sdl; 534 struct ifmultiaddr *rifma = NULL; 535 int error; 536 537 link_init_sdl(ifp, (struct sockaddr *)&sdl, IFT_ETHER); 538 sdl.sdl_alen = ETHER_ADDR_LEN; 539 540 bcopy(ðermulticastaddr_slowprotocols, 541 LLADDR(&sdl), ETHER_ADDR_LEN); 542 error = if_addmulti(ifp, (struct sockaddr *)&sdl, &rifma); 543 if (error) { 544 printf("%s: ADDMULTI failed on %s\n", __func__, 545 lgp->lp_ifp->if_xname); 546 return (error); 547 } 548 549 lp = malloc(sizeof(struct lacp_port), 550 M_DEVBUF, M_NOWAIT|M_ZERO); 551 if (lp == NULL) 552 return (ENOMEM); 553 554 LACP_LOCK(lsc); 555 lgp->lp_psc = lp; 556 lp->lp_ifp = ifp; 557 lp->lp_lagg = lgp; 558 lp->lp_lsc = lsc; 559 lp->lp_ifma = rifma; 560 561 LIST_INSERT_HEAD(&lsc->lsc_ports, lp, lp_next); 562 563 lacp_fill_actorinfo(lp, &lp->lp_actor); 564 lacp_fill_markerinfo(lp, &lp->lp_marker); 565 lp->lp_state = LACP_STATE_ACTIVITY; 566 lp->lp_aggregator = NULL; 567 lacp_sm_rx_set_expired(lp); 568 LACP_UNLOCK(lsc); 569 lacp_linkstate(lgp); 570 571 return (0); 572 } 573 574 void 575 lacp_port_destroy(struct lagg_port *lgp) 576 { 577 struct lacp_port *lp = LACP_PORT(lgp); 578 struct lacp_softc *lsc = lp->lp_lsc; 579 int i; 580 581 LACP_LOCK(lsc); 582 for (i = 0; i < LACP_NTIMER; i++) { 583 LACP_TIMER_DISARM(lp, i); 584 } 585 586 lacp_disable_collecting(lp); 587 lacp_disable_distributing(lp); 588 lacp_unselect(lp); 589 590 LIST_REMOVE(lp, lp_next); 591 LACP_UNLOCK(lsc); 592 593 /* The address may have already been removed by if_purgemaddrs() */ 594 if (!lgp->lp_detaching) 595 if_delmulti_ifma(lp->lp_ifma); 596 597 free(lp, M_DEVBUF); 598 } 599 600 void 601 lacp_req(struct lagg_softc *sc, void *data) 602 { 603 struct lacp_opreq *req = (struct lacp_opreq *)data; 604 struct lacp_softc *lsc = LACP_SOFTC(sc); 605 struct lacp_aggregator *la; 606 607 bzero(req, sizeof(struct lacp_opreq)); 608 609 /* 610 * If the LACP softc is NULL, return with the opreq structure full of 611 * zeros. It is normal for the softc to be NULL while the lagg is 612 * being destroyed. 613 */ 614 if (NULL == lsc) 615 return; 616 617 la = lsc->lsc_active_aggregator; 618 LACP_LOCK(lsc); 619 if (la != NULL) { 620 req->actor_prio = ntohs(la->la_actor.lip_systemid.lsi_prio); 621 memcpy(&req->actor_mac, &la->la_actor.lip_systemid.lsi_mac, 622 ETHER_ADDR_LEN); 623 req->actor_key = ntohs(la->la_actor.lip_key); 624 req->actor_portprio = ntohs(la->la_actor.lip_portid.lpi_prio); 625 req->actor_portno = ntohs(la->la_actor.lip_portid.lpi_portno); 626 req->actor_state = la->la_actor.lip_state; 627 628 req->partner_prio = ntohs(la->la_partner.lip_systemid.lsi_prio); 629 memcpy(&req->partner_mac, &la->la_partner.lip_systemid.lsi_mac, 630 ETHER_ADDR_LEN); 631 req->partner_key = ntohs(la->la_partner.lip_key); 632 req->partner_portprio = ntohs(la->la_partner.lip_portid.lpi_prio); 633 req->partner_portno = ntohs(la->la_partner.lip_portid.lpi_portno); 634 req->partner_state = la->la_partner.lip_state; 635 } 636 LACP_UNLOCK(lsc); 637 } 638 639 void 640 lacp_portreq(struct lagg_port *lgp, void *data) 641 { 642 struct lacp_opreq *req = (struct lacp_opreq *)data; 643 struct lacp_port *lp = LACP_PORT(lgp); 644 struct lacp_softc *lsc = lp->lp_lsc; 645 646 LACP_LOCK(lsc); 647 req->actor_prio = ntohs(lp->lp_actor.lip_systemid.lsi_prio); 648 memcpy(&req->actor_mac, &lp->lp_actor.lip_systemid.lsi_mac, 649 ETHER_ADDR_LEN); 650 req->actor_key = ntohs(lp->lp_actor.lip_key); 651 req->actor_portprio = ntohs(lp->lp_actor.lip_portid.lpi_prio); 652 req->actor_portno = ntohs(lp->lp_actor.lip_portid.lpi_portno); 653 req->actor_state = lp->lp_actor.lip_state; 654 655 req->partner_prio = ntohs(lp->lp_partner.lip_systemid.lsi_prio); 656 memcpy(&req->partner_mac, &lp->lp_partner.lip_systemid.lsi_mac, 657 ETHER_ADDR_LEN); 658 req->partner_key = ntohs(lp->lp_partner.lip_key); 659 req->partner_portprio = ntohs(lp->lp_partner.lip_portid.lpi_prio); 660 req->partner_portno = ntohs(lp->lp_partner.lip_portid.lpi_portno); 661 req->partner_state = lp->lp_partner.lip_state; 662 LACP_UNLOCK(lsc); 663 } 664 665 static void 666 lacp_disable_collecting(struct lacp_port *lp) 667 { 668 LACP_DPRINTF((lp, "collecting disabled\n")); 669 lp->lp_state &= ~LACP_STATE_COLLECTING; 670 } 671 672 static void 673 lacp_enable_collecting(struct lacp_port *lp) 674 { 675 LACP_DPRINTF((lp, "collecting enabled\n")); 676 lp->lp_state |= LACP_STATE_COLLECTING; 677 } 678 679 static void 680 lacp_disable_distributing(struct lacp_port *lp) 681 { 682 struct lacp_aggregator *la = lp->lp_aggregator; 683 struct lacp_softc *lsc = lp->lp_lsc; 684 struct lagg_softc *sc = lsc->lsc_softc; 685 char buf[LACP_LAGIDSTR_MAX+1]; 686 687 LACP_LOCK_ASSERT(lsc); 688 689 if (la == NULL || (lp->lp_state & LACP_STATE_DISTRIBUTING) == 0) { 690 return; 691 } 692 693 KASSERT(!TAILQ_EMPTY(&la->la_ports), ("no aggregator ports")); 694 KASSERT(la->la_nports > 0, ("nports invalid (%d)", la->la_nports)); 695 KASSERT(la->la_refcnt >= la->la_nports, ("aggregator refcnt invalid")); 696 697 LACP_DPRINTF((lp, "disable distributing on aggregator %s, " 698 "nports %d -> %d\n", 699 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 700 la->la_nports, la->la_nports - 1)); 701 702 TAILQ_REMOVE(&la->la_ports, lp, lp_dist_q); 703 la->la_nports--; 704 sc->sc_active = la->la_nports; 705 706 if (lsc->lsc_active_aggregator == la) { 707 lacp_suppress_distributing(lsc, la); 708 lacp_select_active_aggregator(lsc); 709 /* regenerate the port map, the active aggregator has changed */ 710 lacp_update_portmap(lsc); 711 } 712 713 lp->lp_state &= ~LACP_STATE_DISTRIBUTING; 714 if_link_state_change(sc->sc_ifp, 715 sc->sc_active ? LINK_STATE_UP : LINK_STATE_DOWN); 716 } 717 718 static void 719 lacp_enable_distributing(struct lacp_port *lp) 720 { 721 struct lacp_aggregator *la = lp->lp_aggregator; 722 struct lacp_softc *lsc = lp->lp_lsc; 723 struct lagg_softc *sc = lsc->lsc_softc; 724 char buf[LACP_LAGIDSTR_MAX+1]; 725 726 LACP_LOCK_ASSERT(lsc); 727 728 if ((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0) { 729 return; 730 } 731 732 LACP_DPRINTF((lp, "enable distributing on aggregator %s, " 733 "nports %d -> %d\n", 734 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 735 la->la_nports, la->la_nports + 1)); 736 737 KASSERT(la->la_refcnt > la->la_nports, ("aggregator refcnt invalid")); 738 TAILQ_INSERT_HEAD(&la->la_ports, lp, lp_dist_q); 739 la->la_nports++; 740 sc->sc_active = la->la_nports; 741 742 lp->lp_state |= LACP_STATE_DISTRIBUTING; 743 744 if (lsc->lsc_active_aggregator == la) { 745 lacp_suppress_distributing(lsc, la); 746 lacp_update_portmap(lsc); 747 } else 748 /* try to become the active aggregator */ 749 lacp_select_active_aggregator(lsc); 750 751 if_link_state_change(sc->sc_ifp, 752 sc->sc_active ? LINK_STATE_UP : LINK_STATE_DOWN); 753 } 754 755 static void 756 lacp_transit_expire(void *vp) 757 { 758 struct lacp_softc *lsc = vp; 759 760 LACP_LOCK_ASSERT(lsc); 761 762 CURVNET_SET(lsc->lsc_softc->sc_ifp->if_vnet); 763 LACP_TRACE(NULL); 764 CURVNET_RESTORE(); 765 766 lsc->lsc_suppress_distributing = FALSE; 767 } 768 769 void 770 lacp_attach(struct lagg_softc *sc) 771 { 772 struct lacp_softc *lsc; 773 774 lsc = malloc(sizeof(struct lacp_softc), M_DEVBUF, M_WAITOK | M_ZERO); 775 776 sc->sc_psc = lsc; 777 lsc->lsc_softc = sc; 778 779 lsc->lsc_hashkey = m_ether_tcpip_hash_init(); 780 lsc->lsc_active_aggregator = NULL; 781 lsc->lsc_strict_mode = VNET(lacp_default_strict_mode); 782 LACP_LOCK_INIT(lsc); 783 TAILQ_INIT(&lsc->lsc_aggregators); 784 LIST_INIT(&lsc->lsc_ports); 785 786 callout_init_mtx(&lsc->lsc_transit_callout, &lsc->lsc_mtx, 0); 787 callout_init_mtx(&lsc->lsc_callout, &lsc->lsc_mtx, 0); 788 789 /* if the lagg is already up then do the same */ 790 if (sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING) 791 lacp_init(sc); 792 } 793 794 void 795 lacp_detach(void *psc) 796 { 797 struct lacp_softc *lsc = (struct lacp_softc *)psc; 798 799 KASSERT(TAILQ_EMPTY(&lsc->lsc_aggregators), 800 ("aggregators still active")); 801 KASSERT(lsc->lsc_active_aggregator == NULL, 802 ("aggregator still attached")); 803 804 callout_drain(&lsc->lsc_transit_callout); 805 callout_drain(&lsc->lsc_callout); 806 807 LACP_LOCK_DESTROY(lsc); 808 free(lsc, M_DEVBUF); 809 } 810 811 void 812 lacp_init(struct lagg_softc *sc) 813 { 814 struct lacp_softc *lsc = LACP_SOFTC(sc); 815 816 LACP_LOCK(lsc); 817 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc); 818 LACP_UNLOCK(lsc); 819 } 820 821 void 822 lacp_stop(struct lagg_softc *sc) 823 { 824 struct lacp_softc *lsc = LACP_SOFTC(sc); 825 826 LACP_LOCK(lsc); 827 callout_stop(&lsc->lsc_transit_callout); 828 callout_stop(&lsc->lsc_callout); 829 LACP_UNLOCK(lsc); 830 } 831 832 struct lagg_port * 833 lacp_select_tx_port(struct lagg_softc *sc, struct mbuf *m) 834 { 835 struct lacp_softc *lsc = LACP_SOFTC(sc); 836 struct lacp_portmap *pm; 837 struct lacp_port *lp; 838 struct lacp_port **map; 839 uint32_t hash; 840 int count; 841 842 if (__predict_false(lsc->lsc_suppress_distributing)) { 843 LACP_DPRINTF((NULL, "%s: waiting transit\n", __func__)); 844 return (NULL); 845 } 846 847 pm = &lsc->lsc_pmap[lsc->lsc_activemap]; 848 if (pm->pm_count == 0) { 849 LACP_DPRINTF((NULL, "%s: no active aggregator\n", __func__)); 850 return (NULL); 851 } 852 853 #ifdef NUMA 854 if ((sc->sc_opts & LAGG_OPT_USE_NUMA) && 855 pm->pm_num_dom > 1 && m->m_pkthdr.numa_domain < MAXMEMDOM) { 856 count = pm->pm_numa[m->m_pkthdr.numa_domain].count; 857 if (count > 0) { 858 map = pm->pm_numa[m->m_pkthdr.numa_domain].map; 859 } else { 860 /* No ports on this domain; use global hash. */ 861 map = pm->pm_map; 862 count = pm->pm_count; 863 } 864 } else 865 #endif 866 { 867 map = pm->pm_map; 868 count = pm->pm_count; 869 } 870 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) && 871 M_HASHTYPE_GET(m) != M_HASHTYPE_NONE) 872 hash = m->m_pkthdr.flowid >> sc->flowid_shift; 873 else 874 hash = m_ether_tcpip_hash(sc->sc_flags, m, lsc->lsc_hashkey); 875 876 hash %= count; 877 lp = map[hash]; 878 879 KASSERT((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0, 880 ("aggregated port is not distributing")); 881 882 return (lp->lp_lagg); 883 } 884 885 #ifdef RATELIMIT 886 struct lagg_port * 887 lacp_select_tx_port_by_hash(struct lagg_softc *sc, uint32_t flowid) 888 { 889 struct lacp_softc *lsc = LACP_SOFTC(sc); 890 struct lacp_portmap *pm; 891 struct lacp_port *lp; 892 uint32_t hash; 893 894 if (__predict_false(lsc->lsc_suppress_distributing)) { 895 LACP_DPRINTF((NULL, "%s: waiting transit\n", __func__)); 896 return (NULL); 897 } 898 899 pm = &lsc->lsc_pmap[lsc->lsc_activemap]; 900 if (pm->pm_count == 0) { 901 LACP_DPRINTF((NULL, "%s: no active aggregator\n", __func__)); 902 return (NULL); 903 } 904 905 hash = flowid >> sc->flowid_shift; 906 hash %= pm->pm_count; 907 lp = pm->pm_map[hash]; 908 909 return (lp->lp_lagg); 910 } 911 #endif 912 913 /* 914 * lacp_suppress_distributing: drop transmit packets for a while 915 * to preserve packet ordering. 916 */ 917 918 static void 919 lacp_suppress_distributing(struct lacp_softc *lsc, struct lacp_aggregator *la) 920 { 921 struct lacp_port *lp; 922 923 if (lsc->lsc_active_aggregator != la) { 924 return; 925 } 926 927 LACP_TRACE(NULL); 928 929 lsc->lsc_suppress_distributing = TRUE; 930 931 /* send a marker frame down each port to verify the queues are empty */ 932 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { 933 lp->lp_flags |= LACP_PORT_MARK; 934 lacp_xmit_marker(lp); 935 } 936 937 /* set a timeout for the marker frames */ 938 callout_reset(&lsc->lsc_transit_callout, 939 LACP_TRANSIT_DELAY * hz / 1000, lacp_transit_expire, lsc); 940 } 941 942 static int 943 lacp_compare_peerinfo(const struct lacp_peerinfo *a, 944 const struct lacp_peerinfo *b) 945 { 946 return (memcmp(a, b, offsetof(struct lacp_peerinfo, lip_state))); 947 } 948 949 static int 950 lacp_compare_systemid(const struct lacp_systemid *a, 951 const struct lacp_systemid *b) 952 { 953 return (memcmp(a, b, sizeof(*a))); 954 } 955 956 #if 0 /* unused */ 957 static int 958 lacp_compare_portid(const struct lacp_portid *a, 959 const struct lacp_portid *b) 960 { 961 return (memcmp(a, b, sizeof(*a))); 962 } 963 #endif 964 965 static uint64_t 966 lacp_aggregator_bandwidth(struct lacp_aggregator *la) 967 { 968 struct lacp_port *lp; 969 uint64_t speed; 970 971 lp = TAILQ_FIRST(&la->la_ports); 972 if (lp == NULL) { 973 return (0); 974 } 975 976 speed = ifmedia_baudrate(lp->lp_media); 977 speed *= la->la_nports; 978 if (speed == 0) { 979 LACP_DPRINTF((lp, "speed 0? media=0x%x nports=%d\n", 980 lp->lp_media, la->la_nports)); 981 } 982 983 return (speed); 984 } 985 986 /* 987 * lacp_select_active_aggregator: select an aggregator to be used to transmit 988 * packets from lagg(4) interface. 989 */ 990 991 static void 992 lacp_select_active_aggregator(struct lacp_softc *lsc) 993 { 994 struct lacp_aggregator *la; 995 struct lacp_aggregator *best_la = NULL; 996 uint64_t best_speed = 0; 997 char buf[LACP_LAGIDSTR_MAX+1]; 998 999 LACP_TRACE(NULL); 1000 1001 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 1002 uint64_t speed; 1003 1004 if (la->la_nports == 0) { 1005 continue; 1006 } 1007 1008 speed = lacp_aggregator_bandwidth(la); 1009 LACP_DPRINTF((NULL, "%s, speed=%jd, nports=%d\n", 1010 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 1011 speed, la->la_nports)); 1012 1013 /* 1014 * This aggregator is chosen if the partner has a better 1015 * system priority or, the total aggregated speed is higher 1016 * or, it is already the chosen aggregator 1017 */ 1018 if ((best_la != NULL && LACP_SYS_PRI(la->la_partner) < 1019 LACP_SYS_PRI(best_la->la_partner)) || 1020 speed > best_speed || 1021 (speed == best_speed && 1022 la == lsc->lsc_active_aggregator)) { 1023 best_la = la; 1024 best_speed = speed; 1025 } 1026 } 1027 1028 KASSERT(best_la == NULL || best_la->la_nports > 0, 1029 ("invalid aggregator refcnt")); 1030 KASSERT(best_la == NULL || !TAILQ_EMPTY(&best_la->la_ports), 1031 ("invalid aggregator list")); 1032 1033 if (lsc->lsc_active_aggregator != best_la) { 1034 LACP_DPRINTF((NULL, "active aggregator changed\n")); 1035 LACP_DPRINTF((NULL, "old %s\n", 1036 lacp_format_lagid_aggregator(lsc->lsc_active_aggregator, 1037 buf, sizeof(buf)))); 1038 } else { 1039 LACP_DPRINTF((NULL, "active aggregator not changed\n")); 1040 } 1041 LACP_DPRINTF((NULL, "new %s\n", 1042 lacp_format_lagid_aggregator(best_la, buf, sizeof(buf)))); 1043 1044 if (lsc->lsc_active_aggregator != best_la) { 1045 lsc->lsc_active_aggregator = best_la; 1046 lacp_update_portmap(lsc); 1047 if (best_la) { 1048 lacp_suppress_distributing(lsc, best_la); 1049 } 1050 } 1051 } 1052 1053 /* 1054 * Updated the inactive portmap array with the new list of ports and 1055 * make it live. 1056 */ 1057 static void 1058 lacp_update_portmap(struct lacp_softc *lsc) 1059 { 1060 struct lagg_softc *sc = lsc->lsc_softc; 1061 struct lacp_aggregator *la; 1062 struct lacp_portmap *p; 1063 struct lacp_port *lp; 1064 uint64_t speed; 1065 u_int newmap; 1066 int i; 1067 #ifdef NUMA 1068 int count; 1069 uint8_t domain; 1070 #endif 1071 1072 newmap = lsc->lsc_activemap == 0 ? 1 : 0; 1073 p = &lsc->lsc_pmap[newmap]; 1074 la = lsc->lsc_active_aggregator; 1075 speed = 0; 1076 bzero(p, sizeof(struct lacp_portmap)); 1077 1078 if (la != NULL && la->la_nports > 0) { 1079 p->pm_count = la->la_nports; 1080 i = 0; 1081 TAILQ_FOREACH(lp, &la->la_ports, lp_dist_q) { 1082 p->pm_map[i++] = lp; 1083 #ifdef NUMA 1084 domain = lp->lp_ifp->if_numa_domain; 1085 if (domain >= MAXMEMDOM) 1086 continue; 1087 count = p->pm_numa[domain].count; 1088 p->pm_numa[domain].map[count] = lp; 1089 p->pm_numa[domain].count++; 1090 #endif 1091 } 1092 KASSERT(i == p->pm_count, ("Invalid port count")); 1093 1094 #ifdef NUMA 1095 for (i = 0; i < MAXMEMDOM; i++) { 1096 if (p->pm_numa[i].count != 0) 1097 p->pm_num_dom++; 1098 } 1099 #endif 1100 speed = lacp_aggregator_bandwidth(la); 1101 } 1102 sc->sc_ifp->if_baudrate = speed; 1103 1104 /* switch the active portmap over */ 1105 atomic_store_rel_int(&lsc->lsc_activemap, newmap); 1106 LACP_DPRINTF((NULL, "Set table %d with %d ports\n", 1107 lsc->lsc_activemap, 1108 lsc->lsc_pmap[lsc->lsc_activemap].pm_count)); 1109 } 1110 1111 static uint16_t 1112 lacp_compose_key(struct lacp_port *lp) 1113 { 1114 struct lagg_port *lgp = lp->lp_lagg; 1115 struct lagg_softc *sc = lgp->lp_softc; 1116 u_int media = lp->lp_media; 1117 uint16_t key; 1118 1119 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) { 1120 1121 /* 1122 * non-aggregatable links should have unique keys. 1123 * 1124 * XXX this isn't really unique as if_index is 16 bit. 1125 */ 1126 1127 /* bit 0..14: (some bits of) if_index of this port */ 1128 key = lp->lp_ifp->if_index; 1129 /* bit 15: 1 */ 1130 key |= 0x8000; 1131 } else { 1132 u_int subtype = IFM_SUBTYPE(media); 1133 1134 KASSERT(IFM_TYPE(media) == IFM_ETHER, ("invalid media type")); 1135 KASSERT((media & IFM_FDX) != 0, ("aggregating HDX interface")); 1136 1137 /* bit 0..4: IFM_SUBTYPE modulo speed */ 1138 switch (subtype) { 1139 case IFM_10_T: 1140 case IFM_10_2: 1141 case IFM_10_5: 1142 case IFM_10_STP: 1143 case IFM_10_FL: 1144 key = IFM_10_T; 1145 break; 1146 case IFM_100_TX: 1147 case IFM_100_FX: 1148 case IFM_100_T4: 1149 case IFM_100_VG: 1150 case IFM_100_T2: 1151 case IFM_100_T: 1152 case IFM_100_SGMII: 1153 key = IFM_100_TX; 1154 break; 1155 case IFM_1000_SX: 1156 case IFM_1000_LX: 1157 case IFM_1000_CX: 1158 case IFM_1000_T: 1159 case IFM_1000_KX: 1160 case IFM_1000_SGMII: 1161 case IFM_1000_CX_SGMII: 1162 key = IFM_1000_SX; 1163 break; 1164 case IFM_10G_LR: 1165 case IFM_10G_SR: 1166 case IFM_10G_CX4: 1167 case IFM_10G_TWINAX: 1168 case IFM_10G_TWINAX_LONG: 1169 case IFM_10G_LRM: 1170 case IFM_10G_T: 1171 case IFM_10G_KX4: 1172 case IFM_10G_KR: 1173 case IFM_10G_CR1: 1174 case IFM_10G_ER: 1175 case IFM_10G_SFI: 1176 case IFM_10G_AOC: 1177 key = IFM_10G_LR; 1178 break; 1179 case IFM_20G_KR2: 1180 key = IFM_20G_KR2; 1181 break; 1182 case IFM_2500_KX: 1183 case IFM_2500_T: 1184 case IFM_2500_X: 1185 key = IFM_2500_KX; 1186 break; 1187 case IFM_5000_T: 1188 case IFM_5000_KR: 1189 case IFM_5000_KR_S: 1190 case IFM_5000_KR1: 1191 key = IFM_5000_T; 1192 break; 1193 case IFM_50G_PCIE: 1194 case IFM_50G_CR2: 1195 case IFM_50G_KR2: 1196 case IFM_50G_SR2: 1197 case IFM_50G_LR2: 1198 case IFM_50G_LAUI2_AC: 1199 case IFM_50G_LAUI2: 1200 case IFM_50G_AUI2_AC: 1201 case IFM_50G_AUI2: 1202 case IFM_50G_CP: 1203 case IFM_50G_SR: 1204 case IFM_50G_LR: 1205 case IFM_50G_FR: 1206 case IFM_50G_KR_PAM4: 1207 case IFM_50G_AUI1_AC: 1208 case IFM_50G_AUI1: 1209 key = IFM_50G_PCIE; 1210 break; 1211 case IFM_56G_R4: 1212 key = IFM_56G_R4; 1213 break; 1214 case IFM_25G_PCIE: 1215 case IFM_25G_CR: 1216 case IFM_25G_KR: 1217 case IFM_25G_SR: 1218 case IFM_25G_LR: 1219 case IFM_25G_ACC: 1220 case IFM_25G_AOC: 1221 case IFM_25G_T: 1222 case IFM_25G_CR_S: 1223 case IFM_25G_CR1: 1224 case IFM_25G_KR_S: 1225 case IFM_25G_AUI: 1226 case IFM_25G_KR1: 1227 key = IFM_25G_PCIE; 1228 break; 1229 case IFM_40G_CR4: 1230 case IFM_40G_SR4: 1231 case IFM_40G_LR4: 1232 case IFM_40G_XLPPI: 1233 case IFM_40G_KR4: 1234 case IFM_40G_XLAUI: 1235 case IFM_40G_XLAUI_AC: 1236 case IFM_40G_ER4: 1237 key = IFM_40G_CR4; 1238 break; 1239 case IFM_100G_CR4: 1240 case IFM_100G_SR4: 1241 case IFM_100G_KR4: 1242 case IFM_100G_LR4: 1243 case IFM_100G_CAUI4_AC: 1244 case IFM_100G_CAUI4: 1245 case IFM_100G_AUI4_AC: 1246 case IFM_100G_AUI4: 1247 case IFM_100G_CR_PAM4: 1248 case IFM_100G_KR_PAM4: 1249 case IFM_100G_CP2: 1250 case IFM_100G_SR2: 1251 case IFM_100G_DR: 1252 case IFM_100G_KR2_PAM4: 1253 case IFM_100G_CAUI2_AC: 1254 case IFM_100G_CAUI2: 1255 case IFM_100G_AUI2_AC: 1256 case IFM_100G_AUI2: 1257 key = IFM_100G_CR4; 1258 break; 1259 case IFM_200G_CR4_PAM4: 1260 case IFM_200G_SR4: 1261 case IFM_200G_FR4: 1262 case IFM_200G_LR4: 1263 case IFM_200G_DR4: 1264 case IFM_200G_KR4_PAM4: 1265 case IFM_200G_AUI4_AC: 1266 case IFM_200G_AUI4: 1267 case IFM_200G_AUI8_AC: 1268 case IFM_200G_AUI8: 1269 key = IFM_200G_CR4_PAM4; 1270 break; 1271 case IFM_400G_FR8: 1272 case IFM_400G_LR8: 1273 case IFM_400G_DR4: 1274 case IFM_400G_AUI8_AC: 1275 case IFM_400G_AUI8: 1276 key = IFM_400G_FR8; 1277 break; 1278 default: 1279 key = subtype; 1280 break; 1281 } 1282 /* bit 5..14: (some bits of) if_index of lagg device */ 1283 key |= 0x7fe0 & ((sc->sc_ifp->if_index) << 5); 1284 /* bit 15: 0 */ 1285 } 1286 return (htons(key)); 1287 } 1288 1289 static void 1290 lacp_aggregator_addref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1291 { 1292 char buf[LACP_LAGIDSTR_MAX+1]; 1293 1294 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1295 __func__, 1296 lacp_format_lagid(&la->la_actor, &la->la_partner, 1297 buf, sizeof(buf)), 1298 la->la_refcnt, la->la_refcnt + 1)); 1299 1300 KASSERT(la->la_refcnt > 0, ("refcount <= 0")); 1301 la->la_refcnt++; 1302 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcount")); 1303 } 1304 1305 static void 1306 lacp_aggregator_delref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1307 { 1308 char buf[LACP_LAGIDSTR_MAX+1]; 1309 1310 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1311 __func__, 1312 lacp_format_lagid(&la->la_actor, &la->la_partner, 1313 buf, sizeof(buf)), 1314 la->la_refcnt, la->la_refcnt - 1)); 1315 1316 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcnt")); 1317 la->la_refcnt--; 1318 if (la->la_refcnt > 0) { 1319 return; 1320 } 1321 1322 KASSERT(la->la_refcnt == 0, ("refcount not zero")); 1323 KASSERT(lsc->lsc_active_aggregator != la, ("aggregator active")); 1324 1325 TAILQ_REMOVE(&lsc->lsc_aggregators, la, la_q); 1326 1327 free(la, M_DEVBUF); 1328 } 1329 1330 /* 1331 * lacp_aggregator_get: allocate an aggregator. 1332 */ 1333 1334 static struct lacp_aggregator * 1335 lacp_aggregator_get(struct lacp_softc *lsc, struct lacp_port *lp) 1336 { 1337 struct lacp_aggregator *la; 1338 1339 la = malloc(sizeof(*la), M_DEVBUF, M_NOWAIT); 1340 if (la) { 1341 la->la_refcnt = 1; 1342 la->la_nports = 0; 1343 TAILQ_INIT(&la->la_ports); 1344 la->la_pending = 0; 1345 TAILQ_INSERT_TAIL(&lsc->lsc_aggregators, la, la_q); 1346 } 1347 1348 return (la); 1349 } 1350 1351 /* 1352 * lacp_fill_aggregator_id: setup a newly allocated aggregator from a port. 1353 */ 1354 1355 static void 1356 lacp_fill_aggregator_id(struct lacp_aggregator *la, const struct lacp_port *lp) 1357 { 1358 lacp_fill_aggregator_id_peer(&la->la_partner, &lp->lp_partner); 1359 lacp_fill_aggregator_id_peer(&la->la_actor, &lp->lp_actor); 1360 1361 la->la_actor.lip_state = lp->lp_state & LACP_STATE_AGGREGATION; 1362 } 1363 1364 static void 1365 lacp_fill_aggregator_id_peer(struct lacp_peerinfo *lpi_aggr, 1366 const struct lacp_peerinfo *lpi_port) 1367 { 1368 memset(lpi_aggr, 0, sizeof(*lpi_aggr)); 1369 lpi_aggr->lip_systemid = lpi_port->lip_systemid; 1370 lpi_aggr->lip_key = lpi_port->lip_key; 1371 } 1372 1373 /* 1374 * lacp_aggregator_is_compatible: check if a port can join to an aggregator. 1375 */ 1376 1377 static int 1378 lacp_aggregator_is_compatible(const struct lacp_aggregator *la, 1379 const struct lacp_port *lp) 1380 { 1381 if (!(lp->lp_state & LACP_STATE_AGGREGATION) || 1382 !(lp->lp_partner.lip_state & LACP_STATE_AGGREGATION)) { 1383 return (0); 1384 } 1385 1386 if (!(la->la_actor.lip_state & LACP_STATE_AGGREGATION)) { 1387 return (0); 1388 } 1389 1390 if (!lacp_peerinfo_is_compatible(&la->la_partner, &lp->lp_partner)) { 1391 return (0); 1392 } 1393 1394 if (!lacp_peerinfo_is_compatible(&la->la_actor, &lp->lp_actor)) { 1395 return (0); 1396 } 1397 1398 return (1); 1399 } 1400 1401 static int 1402 lacp_peerinfo_is_compatible(const struct lacp_peerinfo *a, 1403 const struct lacp_peerinfo *b) 1404 { 1405 if (memcmp(&a->lip_systemid, &b->lip_systemid, 1406 sizeof(a->lip_systemid))) { 1407 return (0); 1408 } 1409 1410 if (memcmp(&a->lip_key, &b->lip_key, sizeof(a->lip_key))) { 1411 return (0); 1412 } 1413 1414 return (1); 1415 } 1416 1417 static void 1418 lacp_port_enable(struct lacp_port *lp) 1419 { 1420 lp->lp_state |= LACP_STATE_AGGREGATION; 1421 } 1422 1423 static void 1424 lacp_port_disable(struct lacp_port *lp) 1425 { 1426 lacp_set_mux(lp, LACP_MUX_DETACHED); 1427 1428 lp->lp_state &= ~LACP_STATE_AGGREGATION; 1429 lp->lp_selected = LACP_UNSELECTED; 1430 lacp_sm_rx_record_default(lp); 1431 lp->lp_partner.lip_state &= ~LACP_STATE_AGGREGATION; 1432 lp->lp_state &= ~LACP_STATE_EXPIRED; 1433 } 1434 1435 /* 1436 * lacp_select: select an aggregator. create one if necessary. 1437 */ 1438 static void 1439 lacp_select(struct lacp_port *lp) 1440 { 1441 struct lacp_softc *lsc = lp->lp_lsc; 1442 struct lacp_aggregator *la; 1443 char buf[LACP_LAGIDSTR_MAX+1]; 1444 1445 if (lp->lp_aggregator) { 1446 return; 1447 } 1448 1449 /* If we haven't heard from our peer, skip this step. */ 1450 if (lp->lp_state & LACP_STATE_DEFAULTED) 1451 return; 1452 1453 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1454 ("timer_wait_while still active")); 1455 1456 LACP_DPRINTF((lp, "port lagid=%s\n", 1457 lacp_format_lagid(&lp->lp_actor, &lp->lp_partner, 1458 buf, sizeof(buf)))); 1459 1460 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 1461 if (lacp_aggregator_is_compatible(la, lp)) { 1462 break; 1463 } 1464 } 1465 1466 if (la == NULL) { 1467 la = lacp_aggregator_get(lsc, lp); 1468 if (la == NULL) { 1469 LACP_DPRINTF((lp, "aggregator creation failed\n")); 1470 1471 /* 1472 * will retry on the next tick. 1473 */ 1474 1475 return; 1476 } 1477 lacp_fill_aggregator_id(la, lp); 1478 LACP_DPRINTF((lp, "aggregator created\n")); 1479 } else { 1480 LACP_DPRINTF((lp, "compatible aggregator found\n")); 1481 if (la->la_refcnt == LACP_MAX_PORTS) 1482 return; 1483 lacp_aggregator_addref(lsc, la); 1484 } 1485 1486 LACP_DPRINTF((lp, "aggregator lagid=%s\n", 1487 lacp_format_lagid(&la->la_actor, &la->la_partner, 1488 buf, sizeof(buf)))); 1489 1490 lp->lp_aggregator = la; 1491 lp->lp_selected = LACP_SELECTED; 1492 } 1493 1494 /* 1495 * lacp_unselect: finish unselect/detach process. 1496 */ 1497 1498 static void 1499 lacp_unselect(struct lacp_port *lp) 1500 { 1501 struct lacp_softc *lsc = lp->lp_lsc; 1502 struct lacp_aggregator *la = lp->lp_aggregator; 1503 1504 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1505 ("timer_wait_while still active")); 1506 1507 if (la == NULL) { 1508 return; 1509 } 1510 1511 lp->lp_aggregator = NULL; 1512 lacp_aggregator_delref(lsc, la); 1513 } 1514 1515 /* mux machine */ 1516 1517 static void 1518 lacp_sm_mux(struct lacp_port *lp) 1519 { 1520 struct lagg_port *lgp = lp->lp_lagg; 1521 struct lagg_softc *sc = lgp->lp_softc; 1522 enum lacp_mux_state new_state; 1523 boolean_t p_sync = 1524 (lp->lp_partner.lip_state & LACP_STATE_SYNC) != 0; 1525 boolean_t p_collecting = 1526 (lp->lp_partner.lip_state & LACP_STATE_COLLECTING) != 0; 1527 enum lacp_selected selected = lp->lp_selected; 1528 struct lacp_aggregator *la; 1529 1530 if (V_lacp_debug > 1) 1531 lacp_dprintf(lp, "%s: state= 0x%x, selected= 0x%x, " 1532 "p_sync= 0x%x, p_collecting= 0x%x\n", __func__, 1533 lp->lp_mux_state, selected, p_sync, p_collecting); 1534 1535 re_eval: 1536 la = lp->lp_aggregator; 1537 KASSERT(lp->lp_mux_state == LACP_MUX_DETACHED || la != NULL, 1538 ("MUX not detached")); 1539 new_state = lp->lp_mux_state; 1540 switch (lp->lp_mux_state) { 1541 case LACP_MUX_DETACHED: 1542 if (selected != LACP_UNSELECTED) { 1543 new_state = LACP_MUX_WAITING; 1544 } 1545 break; 1546 case LACP_MUX_WAITING: 1547 KASSERT(la->la_pending > 0 || 1548 !LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1549 ("timer_wait_while still active")); 1550 if (selected == LACP_SELECTED && la->la_pending == 0) { 1551 new_state = LACP_MUX_ATTACHED; 1552 } else if (selected == LACP_UNSELECTED) { 1553 new_state = LACP_MUX_DETACHED; 1554 } 1555 break; 1556 case LACP_MUX_ATTACHED: 1557 if (selected == LACP_SELECTED && p_sync) { 1558 new_state = LACP_MUX_COLLECTING; 1559 } else if (selected != LACP_SELECTED) { 1560 new_state = LACP_MUX_DETACHED; 1561 } 1562 break; 1563 case LACP_MUX_COLLECTING: 1564 if (selected == LACP_SELECTED && p_sync && p_collecting) { 1565 new_state = LACP_MUX_DISTRIBUTING; 1566 } else if (selected != LACP_SELECTED || !p_sync) { 1567 new_state = LACP_MUX_ATTACHED; 1568 } 1569 break; 1570 case LACP_MUX_DISTRIBUTING: 1571 if (selected != LACP_SELECTED || !p_sync || !p_collecting) { 1572 new_state = LACP_MUX_COLLECTING; 1573 lacp_dprintf(lp, "Interface stopped DISTRIBUTING, possible flapping\n"); 1574 sc->sc_flapping++; 1575 } 1576 break; 1577 default: 1578 panic("%s: unknown state", __func__); 1579 } 1580 1581 if (lp->lp_mux_state == new_state) { 1582 return; 1583 } 1584 1585 lacp_set_mux(lp, new_state); 1586 goto re_eval; 1587 } 1588 1589 static void 1590 lacp_set_mux(struct lacp_port *lp, enum lacp_mux_state new_state) 1591 { 1592 struct lacp_aggregator *la = lp->lp_aggregator; 1593 1594 if (lp->lp_mux_state == new_state) { 1595 return; 1596 } 1597 1598 switch (new_state) { 1599 case LACP_MUX_DETACHED: 1600 lp->lp_state &= ~LACP_STATE_SYNC; 1601 lacp_disable_distributing(lp); 1602 lacp_disable_collecting(lp); 1603 lacp_sm_assert_ntt(lp); 1604 /* cancel timer */ 1605 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE)) { 1606 KASSERT(la->la_pending > 0, 1607 ("timer_wait_while not active")); 1608 la->la_pending--; 1609 } 1610 LACP_TIMER_DISARM(lp, LACP_TIMER_WAIT_WHILE); 1611 lacp_unselect(lp); 1612 break; 1613 case LACP_MUX_WAITING: 1614 LACP_TIMER_ARM(lp, LACP_TIMER_WAIT_WHILE, 1615 LACP_AGGREGATE_WAIT_TIME); 1616 la->la_pending++; 1617 break; 1618 case LACP_MUX_ATTACHED: 1619 lp->lp_state |= LACP_STATE_SYNC; 1620 lacp_disable_collecting(lp); 1621 lacp_sm_assert_ntt(lp); 1622 break; 1623 case LACP_MUX_COLLECTING: 1624 lacp_enable_collecting(lp); 1625 lacp_disable_distributing(lp); 1626 lacp_sm_assert_ntt(lp); 1627 break; 1628 case LACP_MUX_DISTRIBUTING: 1629 lacp_enable_distributing(lp); 1630 break; 1631 default: 1632 panic("%s: unknown state", __func__); 1633 } 1634 1635 LACP_DPRINTF((lp, "mux_state %d -> %d\n", lp->lp_mux_state, new_state)); 1636 1637 lp->lp_mux_state = new_state; 1638 } 1639 1640 static void 1641 lacp_sm_mux_timer(struct lacp_port *lp) 1642 { 1643 struct lacp_aggregator *la = lp->lp_aggregator; 1644 char buf[LACP_LAGIDSTR_MAX+1]; 1645 1646 KASSERT(la->la_pending > 0, ("no pending event")); 1647 1648 LACP_DPRINTF((lp, "%s: aggregator %s, pending %d -> %d\n", __func__, 1649 lacp_format_lagid(&la->la_actor, &la->la_partner, 1650 buf, sizeof(buf)), 1651 la->la_pending, la->la_pending - 1)); 1652 1653 la->la_pending--; 1654 } 1655 1656 /* periodic transmit machine */ 1657 1658 static void 1659 lacp_sm_ptx_update_timeout(struct lacp_port *lp, uint8_t oldpstate) 1660 { 1661 if (LACP_STATE_EQ(oldpstate, lp->lp_partner.lip_state, 1662 LACP_STATE_TIMEOUT)) { 1663 return; 1664 } 1665 1666 LACP_DPRINTF((lp, "partner timeout changed\n")); 1667 1668 /* 1669 * FAST_PERIODIC -> SLOW_PERIODIC 1670 * or 1671 * SLOW_PERIODIC (-> PERIODIC_TX) -> FAST_PERIODIC 1672 * 1673 * let lacp_sm_ptx_tx_schedule to update timeout. 1674 */ 1675 1676 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1677 1678 /* 1679 * if timeout has been shortened, assert NTT. 1680 */ 1681 1682 if ((lp->lp_partner.lip_state & LACP_STATE_TIMEOUT)) { 1683 lacp_sm_assert_ntt(lp); 1684 } 1685 } 1686 1687 static void 1688 lacp_sm_ptx_tx_schedule(struct lacp_port *lp) 1689 { 1690 int timeout; 1691 1692 if (!(lp->lp_state & LACP_STATE_ACTIVITY) && 1693 !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) { 1694 1695 /* 1696 * NO_PERIODIC 1697 */ 1698 1699 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1700 return; 1701 } 1702 1703 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_PERIODIC)) { 1704 return; 1705 } 1706 1707 timeout = (lp->lp_partner.lip_state & LACP_STATE_TIMEOUT) ? 1708 LACP_FAST_PERIODIC_TIME : LACP_SLOW_PERIODIC_TIME; 1709 1710 LACP_TIMER_ARM(lp, LACP_TIMER_PERIODIC, timeout); 1711 } 1712 1713 static void 1714 lacp_sm_ptx_timer(struct lacp_port *lp) 1715 { 1716 lacp_sm_assert_ntt(lp); 1717 } 1718 1719 static void 1720 lacp_sm_rx(struct lacp_port *lp, const struct lacpdu *du) 1721 { 1722 int timeout; 1723 1724 /* 1725 * check LACP_DISABLED first 1726 */ 1727 1728 if (!(lp->lp_state & LACP_STATE_AGGREGATION)) { 1729 return; 1730 } 1731 1732 /* 1733 * check loopback condition. 1734 */ 1735 1736 if (!lacp_compare_systemid(&du->ldu_actor.lip_systemid, 1737 &lp->lp_actor.lip_systemid)) { 1738 return; 1739 } 1740 1741 /* 1742 * EXPIRED, DEFAULTED, CURRENT -> CURRENT 1743 */ 1744 1745 lacp_sm_rx_update_selected(lp, du); 1746 lacp_sm_rx_update_ntt(lp, du); 1747 lacp_sm_rx_record_pdu(lp, du); 1748 1749 timeout = (lp->lp_state & LACP_STATE_TIMEOUT) ? 1750 LACP_SHORT_TIMEOUT_TIME : LACP_LONG_TIMEOUT_TIME; 1751 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, timeout); 1752 1753 lp->lp_state &= ~LACP_STATE_EXPIRED; 1754 1755 /* 1756 * kick transmit machine without waiting the next tick. 1757 */ 1758 1759 lacp_sm_tx(lp); 1760 } 1761 1762 static void 1763 lacp_sm_rx_set_expired(struct lacp_port *lp) 1764 { 1765 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1766 lp->lp_partner.lip_state |= LACP_STATE_TIMEOUT; 1767 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, LACP_SHORT_TIMEOUT_TIME); 1768 lp->lp_state |= LACP_STATE_EXPIRED; 1769 } 1770 1771 static void 1772 lacp_sm_rx_timer(struct lacp_port *lp) 1773 { 1774 if ((lp->lp_state & LACP_STATE_EXPIRED) == 0) { 1775 /* CURRENT -> EXPIRED */ 1776 LACP_DPRINTF((lp, "%s: CURRENT -> EXPIRED\n", __func__)); 1777 lacp_sm_rx_set_expired(lp); 1778 } else { 1779 /* EXPIRED -> DEFAULTED */ 1780 LACP_DPRINTF((lp, "%s: EXPIRED -> DEFAULTED\n", __func__)); 1781 lacp_sm_rx_update_default_selected(lp); 1782 lacp_sm_rx_record_default(lp); 1783 lp->lp_state &= ~LACP_STATE_EXPIRED; 1784 } 1785 } 1786 1787 static void 1788 lacp_sm_rx_record_pdu(struct lacp_port *lp, const struct lacpdu *du) 1789 { 1790 boolean_t active; 1791 uint8_t oldpstate; 1792 char buf[LACP_STATESTR_MAX+1]; 1793 1794 LACP_TRACE(lp); 1795 1796 oldpstate = lp->lp_partner.lip_state; 1797 1798 active = (du->ldu_actor.lip_state & LACP_STATE_ACTIVITY) 1799 || ((lp->lp_state & LACP_STATE_ACTIVITY) && 1800 (du->ldu_partner.lip_state & LACP_STATE_ACTIVITY)); 1801 1802 lp->lp_partner = du->ldu_actor; 1803 if (active && 1804 ((LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1805 LACP_STATE_AGGREGATION) && 1806 !lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner)) 1807 || (du->ldu_partner.lip_state & LACP_STATE_AGGREGATION) == 0)) { 1808 /* 1809 * XXX Maintain legacy behavior of leaving the 1810 * LACP_STATE_SYNC bit unchanged from the partner's 1811 * advertisement if lsc_strict_mode is false. 1812 * TODO: We should re-examine the concept of the "strict mode" 1813 * to ensure it makes sense to maintain a non-strict mode. 1814 */ 1815 if (lp->lp_lsc->lsc_strict_mode) 1816 lp->lp_partner.lip_state |= LACP_STATE_SYNC; 1817 } else { 1818 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1819 } 1820 1821 lp->lp_state &= ~LACP_STATE_DEFAULTED; 1822 1823 if (oldpstate != lp->lp_partner.lip_state) { 1824 LACP_DPRINTF((lp, "old pstate %s\n", 1825 lacp_format_state(oldpstate, buf, sizeof(buf)))); 1826 LACP_DPRINTF((lp, "new pstate %s\n", 1827 lacp_format_state(lp->lp_partner.lip_state, buf, 1828 sizeof(buf)))); 1829 } 1830 1831 lacp_sm_ptx_update_timeout(lp, oldpstate); 1832 } 1833 1834 static void 1835 lacp_sm_rx_update_ntt(struct lacp_port *lp, const struct lacpdu *du) 1836 { 1837 1838 LACP_TRACE(lp); 1839 1840 if (lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner) || 1841 !LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1842 LACP_STATE_ACTIVITY | LACP_STATE_SYNC | LACP_STATE_AGGREGATION)) { 1843 LACP_DPRINTF((lp, "%s: assert ntt\n", __func__)); 1844 lacp_sm_assert_ntt(lp); 1845 } 1846 } 1847 1848 static void 1849 lacp_sm_rx_record_default(struct lacp_port *lp) 1850 { 1851 uint8_t oldpstate; 1852 1853 LACP_TRACE(lp); 1854 1855 oldpstate = lp->lp_partner.lip_state; 1856 if (lp->lp_lsc->lsc_strict_mode) 1857 lp->lp_partner = lacp_partner_admin_strict; 1858 else 1859 lp->lp_partner = lacp_partner_admin_optimistic; 1860 lp->lp_state |= LACP_STATE_DEFAULTED; 1861 lacp_sm_ptx_update_timeout(lp, oldpstate); 1862 } 1863 1864 static void 1865 lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *lp, 1866 const struct lacp_peerinfo *info) 1867 { 1868 1869 LACP_TRACE(lp); 1870 1871 if (lacp_compare_peerinfo(&lp->lp_partner, info) || 1872 !LACP_STATE_EQ(lp->lp_partner.lip_state, info->lip_state, 1873 LACP_STATE_AGGREGATION)) { 1874 lp->lp_selected = LACP_UNSELECTED; 1875 /* mux machine will clean up lp->lp_aggregator */ 1876 } 1877 } 1878 1879 static void 1880 lacp_sm_rx_update_selected(struct lacp_port *lp, const struct lacpdu *du) 1881 { 1882 1883 LACP_TRACE(lp); 1884 1885 lacp_sm_rx_update_selected_from_peerinfo(lp, &du->ldu_actor); 1886 } 1887 1888 static void 1889 lacp_sm_rx_update_default_selected(struct lacp_port *lp) 1890 { 1891 1892 LACP_TRACE(lp); 1893 1894 if (lp->lp_lsc->lsc_strict_mode) 1895 lacp_sm_rx_update_selected_from_peerinfo(lp, 1896 &lacp_partner_admin_strict); 1897 else 1898 lacp_sm_rx_update_selected_from_peerinfo(lp, 1899 &lacp_partner_admin_optimistic); 1900 } 1901 1902 /* transmit machine */ 1903 1904 static void 1905 lacp_sm_tx(struct lacp_port *lp) 1906 { 1907 int error = 0; 1908 1909 if (!(lp->lp_state & LACP_STATE_AGGREGATION) 1910 #if 1 1911 || (!(lp->lp_state & LACP_STATE_ACTIVITY) 1912 && !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) 1913 #endif 1914 ) { 1915 lp->lp_flags &= ~LACP_PORT_NTT; 1916 } 1917 1918 if (!(lp->lp_flags & LACP_PORT_NTT)) { 1919 return; 1920 } 1921 1922 /* Rate limit to 3 PDUs per LACP_FAST_PERIODIC_TIME */ 1923 if (ppsratecheck(&lp->lp_last_lacpdu, &lp->lp_lacpdu_sent, 1924 (3 / LACP_FAST_PERIODIC_TIME)) == 0) { 1925 LACP_DPRINTF((lp, "rate limited pdu\n")); 1926 return; 1927 } 1928 1929 if (((1 << lp->lp_ifp->if_dunit) & lp->lp_lsc->lsc_debug.lsc_tx_test) == 0) { 1930 error = lacp_xmit_lacpdu(lp); 1931 } else { 1932 LACP_TPRINTF((lp, "Dropping TX PDU\n")); 1933 } 1934 1935 if (error == 0) { 1936 lp->lp_flags &= ~LACP_PORT_NTT; 1937 } else { 1938 LACP_DPRINTF((lp, "lacpdu transmit failure, error %d\n", 1939 error)); 1940 } 1941 } 1942 1943 static void 1944 lacp_sm_assert_ntt(struct lacp_port *lp) 1945 { 1946 1947 lp->lp_flags |= LACP_PORT_NTT; 1948 } 1949 1950 static void 1951 lacp_run_timers(struct lacp_port *lp) 1952 { 1953 int i; 1954 1955 for (i = 0; i < LACP_NTIMER; i++) { 1956 KASSERT(lp->lp_timer[i] >= 0, 1957 ("invalid timer value %d", lp->lp_timer[i])); 1958 if (lp->lp_timer[i] == 0) { 1959 continue; 1960 } else if (--lp->lp_timer[i] <= 0) { 1961 if (lacp_timer_funcs[i]) { 1962 (*lacp_timer_funcs[i])(lp); 1963 } 1964 } 1965 } 1966 } 1967 1968 int 1969 lacp_marker_input(struct lacp_port *lp, struct mbuf *m) 1970 { 1971 struct lacp_softc *lsc = lp->lp_lsc; 1972 struct lagg_port *lgp = lp->lp_lagg; 1973 struct lacp_port *lp2; 1974 struct markerdu *mdu; 1975 int error = 0; 1976 int pending = 0; 1977 1978 if (m->m_pkthdr.len != sizeof(*mdu)) { 1979 goto bad; 1980 } 1981 1982 if ((m->m_flags & M_MCAST) == 0) { 1983 goto bad; 1984 } 1985 1986 if (m->m_len < sizeof(*mdu)) { 1987 m = m_pullup(m, sizeof(*mdu)); 1988 if (m == NULL) { 1989 return (ENOMEM); 1990 } 1991 } 1992 1993 mdu = mtod(m, struct markerdu *); 1994 1995 if (memcmp(&mdu->mdu_eh.ether_dhost, 1996 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 1997 goto bad; 1998 } 1999 2000 if (mdu->mdu_sph.sph_version != 1) { 2001 goto bad; 2002 } 2003 2004 switch (mdu->mdu_tlv.tlv_type) { 2005 case MARKER_TYPE_INFO: 2006 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 2007 marker_info_tlv_template, TRUE)) { 2008 goto bad; 2009 } 2010 mdu->mdu_tlv.tlv_type = MARKER_TYPE_RESPONSE; 2011 memcpy(&mdu->mdu_eh.ether_dhost, 2012 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN); 2013 memcpy(&mdu->mdu_eh.ether_shost, 2014 lgp->lp_lladdr, ETHER_ADDR_LEN); 2015 error = lagg_enqueue(lp->lp_ifp, m); 2016 break; 2017 2018 case MARKER_TYPE_RESPONSE: 2019 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 2020 marker_response_tlv_template, TRUE)) { 2021 goto bad; 2022 } 2023 LACP_DPRINTF((lp, "marker response, port=%u, sys=%6D, id=%u\n", 2024 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, 2025 ":", ntohl(mdu->mdu_info.mi_rq_xid))); 2026 2027 /* Verify that it is the last marker we sent out */ 2028 if (memcmp(&mdu->mdu_info, &lp->lp_marker, 2029 sizeof(struct lacp_markerinfo))) 2030 goto bad; 2031 2032 LACP_LOCK(lsc); 2033 lp->lp_flags &= ~LACP_PORT_MARK; 2034 2035 if (lsc->lsc_suppress_distributing) { 2036 /* Check if any ports are waiting for a response */ 2037 LIST_FOREACH(lp2, &lsc->lsc_ports, lp_next) { 2038 if (lp2->lp_flags & LACP_PORT_MARK) { 2039 pending = 1; 2040 break; 2041 } 2042 } 2043 2044 if (pending == 0) { 2045 /* All interface queues are clear */ 2046 LACP_DPRINTF((NULL, "queue flush complete\n")); 2047 lsc->lsc_suppress_distributing = FALSE; 2048 } 2049 } 2050 LACP_UNLOCK(lsc); 2051 m_freem(m); 2052 break; 2053 2054 default: 2055 goto bad; 2056 } 2057 2058 return (error); 2059 2060 bad: 2061 LACP_DPRINTF((lp, "bad marker frame\n")); 2062 m_freem(m); 2063 return (EINVAL); 2064 } 2065 2066 static int 2067 tlv_check(const void *p, size_t size, const struct tlvhdr *tlv, 2068 const struct tlv_template *tmpl, boolean_t check_type) 2069 { 2070 while (/* CONSTCOND */ 1) { 2071 if ((const char *)tlv - (const char *)p + sizeof(*tlv) > size) { 2072 return (EINVAL); 2073 } 2074 if ((check_type && tlv->tlv_type != tmpl->tmpl_type) || 2075 tlv->tlv_length != tmpl->tmpl_length) { 2076 return (EINVAL); 2077 } 2078 if (tmpl->tmpl_type == 0) { 2079 break; 2080 } 2081 tlv = (const struct tlvhdr *) 2082 ((const char *)tlv + tlv->tlv_length); 2083 tmpl++; 2084 } 2085 2086 return (0); 2087 } 2088 2089 /* Debugging */ 2090 const char * 2091 lacp_format_mac(const uint8_t *mac, char *buf, size_t buflen) 2092 { 2093 snprintf(buf, buflen, "%02X-%02X-%02X-%02X-%02X-%02X", 2094 (int)mac[0], 2095 (int)mac[1], 2096 (int)mac[2], 2097 (int)mac[3], 2098 (int)mac[4], 2099 (int)mac[5]); 2100 2101 return (buf); 2102 } 2103 2104 const char * 2105 lacp_format_systemid(const struct lacp_systemid *sysid, 2106 char *buf, size_t buflen) 2107 { 2108 char macbuf[LACP_MACSTR_MAX+1]; 2109 2110 snprintf(buf, buflen, "%04X,%s", 2111 ntohs(sysid->lsi_prio), 2112 lacp_format_mac(sysid->lsi_mac, macbuf, sizeof(macbuf))); 2113 2114 return (buf); 2115 } 2116 2117 const char * 2118 lacp_format_portid(const struct lacp_portid *portid, char *buf, size_t buflen) 2119 { 2120 snprintf(buf, buflen, "%04X,%04X", 2121 ntohs(portid->lpi_prio), 2122 ntohs(portid->lpi_portno)); 2123 2124 return (buf); 2125 } 2126 2127 const char * 2128 lacp_format_partner(const struct lacp_peerinfo *peer, char *buf, size_t buflen) 2129 { 2130 char sysid[LACP_SYSTEMIDSTR_MAX+1]; 2131 char portid[LACP_PORTIDSTR_MAX+1]; 2132 2133 snprintf(buf, buflen, "(%s,%04X,%s)", 2134 lacp_format_systemid(&peer->lip_systemid, sysid, sizeof(sysid)), 2135 ntohs(peer->lip_key), 2136 lacp_format_portid(&peer->lip_portid, portid, sizeof(portid))); 2137 2138 return (buf); 2139 } 2140 2141 const char * 2142 lacp_format_lagid(const struct lacp_peerinfo *a, 2143 const struct lacp_peerinfo *b, char *buf, size_t buflen) 2144 { 2145 char astr[LACP_PARTNERSTR_MAX+1]; 2146 char bstr[LACP_PARTNERSTR_MAX+1]; 2147 2148 #if 0 2149 /* 2150 * there's a convention to display small numbered peer 2151 * in the left. 2152 */ 2153 2154 if (lacp_compare_peerinfo(a, b) > 0) { 2155 const struct lacp_peerinfo *t; 2156 2157 t = a; 2158 a = b; 2159 b = t; 2160 } 2161 #endif 2162 2163 snprintf(buf, buflen, "[%s,%s]", 2164 lacp_format_partner(a, astr, sizeof(astr)), 2165 lacp_format_partner(b, bstr, sizeof(bstr))); 2166 2167 return (buf); 2168 } 2169 2170 const char * 2171 lacp_format_lagid_aggregator(const struct lacp_aggregator *la, 2172 char *buf, size_t buflen) 2173 { 2174 if (la == NULL) { 2175 return ("(none)"); 2176 } 2177 2178 return (lacp_format_lagid(&la->la_actor, &la->la_partner, buf, buflen)); 2179 } 2180 2181 const char * 2182 lacp_format_state(uint8_t state, char *buf, size_t buflen) 2183 { 2184 snprintf(buf, buflen, "%b", state, LACP_STATE_BITS); 2185 return (buf); 2186 } 2187 2188 static void 2189 lacp_dump_lacpdu(const struct lacpdu *du) 2190 { 2191 char buf[LACP_PARTNERSTR_MAX+1]; 2192 char buf2[LACP_STATESTR_MAX+1]; 2193 2194 printf("actor=%s\n", 2195 lacp_format_partner(&du->ldu_actor, buf, sizeof(buf))); 2196 printf("actor.state=%s\n", 2197 lacp_format_state(du->ldu_actor.lip_state, buf2, sizeof(buf2))); 2198 printf("partner=%s\n", 2199 lacp_format_partner(&du->ldu_partner, buf, sizeof(buf))); 2200 printf("partner.state=%s\n", 2201 lacp_format_state(du->ldu_partner.lip_state, buf2, sizeof(buf2))); 2202 2203 printf("maxdelay=%d\n", ntohs(du->ldu_collector.lci_maxdelay)); 2204 } 2205 2206 static void 2207 lacp_dprintf(const struct lacp_port *lp, const char *fmt, ...) 2208 { 2209 va_list va; 2210 2211 if (lp) { 2212 printf("%s: ", lp->lp_ifp->if_xname); 2213 } 2214 2215 va_start(va, fmt); 2216 vprintf(fmt, va); 2217 va_end(va); 2218 } 2219