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sys/net/ieee8023ad_lacp.c
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1 /* $NetBSD: ieee8023ad_lacp.c,v 1.3 2005/12/11 12:24:54 christos Exp $ */ 2 3 /*- 4 * Copyright (c)2005 YAMAMOTO Takashi, 5 * Copyright (c)2008 Andrew Thompson <thompsa@FreeBSD.org> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD: releng/10.2/sys/net/ieee8023ad_lacp.c 283758 2015-05-29 23:02:12Z erj $"); 32 33 #include <sys/param.h> 34 #include <sys/callout.h> 35 #include <sys/mbuf.h> 36 #include <sys/systm.h> 37 #include <sys/malloc.h> 38 #include <sys/kernel.h> /* hz */ 39 #include <sys/socket.h> /* for net/if.h */ 40 #include <sys/sockio.h> 41 #include <sys/sysctl.h> 42 #include <machine/stdarg.h> 43 #include <sys/lock.h> 44 #include <sys/rwlock.h> 45 46 #include <net/if.h> 47 #include <net/if_dl.h> 48 #include <net/ethernet.h> 49 #include <net/if_media.h> 50 #include <net/if_types.h> 51 52 #include <net/if_lagg.h> 53 #include <net/ieee8023ad_lacp.h> 54 55 /* 56 * actor system priority and port priority. 57 * XXX should be configurable. 58 */ 59 60 #define LACP_SYSTEM_PRIO 0x8000 61 #define LACP_PORT_PRIO 0x8000 62 63 const uint8_t ethermulticastaddr_slowprotocols[ETHER_ADDR_LEN] = 64 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x02 }; 65 66 static const struct tlv_template lacp_info_tlv_template[] = { 67 { LACP_TYPE_ACTORINFO, 68 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) }, 69 { LACP_TYPE_PARTNERINFO, 70 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) }, 71 { LACP_TYPE_COLLECTORINFO, 72 sizeof(struct tlvhdr) + sizeof(struct lacp_collectorinfo) }, 73 { 0, 0 }, 74 }; 75 76 static const struct tlv_template marker_info_tlv_template[] = { 77 { MARKER_TYPE_INFO, 78 sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) }, 79 { 0, 0 }, 80 }; 81 82 static const struct tlv_template marker_response_tlv_template[] = { 83 { MARKER_TYPE_RESPONSE, 84 sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) }, 85 { 0, 0 }, 86 }; 87 88 typedef void (*lacp_timer_func_t)(struct lacp_port *); 89 90 static void lacp_fill_actorinfo(struct lacp_port *, struct lacp_peerinfo *); 91 static void lacp_fill_markerinfo(struct lacp_port *, 92 struct lacp_markerinfo *); 93 94 static uint64_t lacp_aggregator_bandwidth(struct lacp_aggregator *); 95 static void lacp_suppress_distributing(struct lacp_softc *, 96 struct lacp_aggregator *); 97 static void lacp_transit_expire(void *); 98 static void lacp_update_portmap(struct lacp_softc *); 99 static void lacp_select_active_aggregator(struct lacp_softc *); 100 static uint16_t lacp_compose_key(struct lacp_port *); 101 static int tlv_check(const void *, size_t, const struct tlvhdr *, 102 const struct tlv_template *, boolean_t); 103 static void lacp_tick(void *); 104 105 static void lacp_fill_aggregator_id(struct lacp_aggregator *, 106 const struct lacp_port *); 107 static void lacp_fill_aggregator_id_peer(struct lacp_peerinfo *, 108 const struct lacp_peerinfo *); 109 static int lacp_aggregator_is_compatible(const struct lacp_aggregator *, 110 const struct lacp_port *); 111 static int lacp_peerinfo_is_compatible(const struct lacp_peerinfo *, 112 const struct lacp_peerinfo *); 113 114 static struct lacp_aggregator *lacp_aggregator_get(struct lacp_softc *, 115 struct lacp_port *); 116 static void lacp_aggregator_addref(struct lacp_softc *, 117 struct lacp_aggregator *); 118 static void lacp_aggregator_delref(struct lacp_softc *, 119 struct lacp_aggregator *); 120 121 /* receive machine */ 122 123 static int lacp_pdu_input(struct lacp_port *, struct mbuf *); 124 static int lacp_marker_input(struct lacp_port *, struct mbuf *); 125 static void lacp_sm_rx(struct lacp_port *, const struct lacpdu *); 126 static void lacp_sm_rx_timer(struct lacp_port *); 127 static void lacp_sm_rx_set_expired(struct lacp_port *); 128 static void lacp_sm_rx_update_ntt(struct lacp_port *, 129 const struct lacpdu *); 130 static void lacp_sm_rx_record_pdu(struct lacp_port *, 131 const struct lacpdu *); 132 static void lacp_sm_rx_update_selected(struct lacp_port *, 133 const struct lacpdu *); 134 static void lacp_sm_rx_record_default(struct lacp_port *); 135 static void lacp_sm_rx_update_default_selected(struct lacp_port *); 136 static void lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *, 137 const struct lacp_peerinfo *); 138 139 /* mux machine */ 140 141 static void lacp_sm_mux(struct lacp_port *); 142 static void lacp_set_mux(struct lacp_port *, enum lacp_mux_state); 143 static void lacp_sm_mux_timer(struct lacp_port *); 144 145 /* periodic transmit machine */ 146 147 static void lacp_sm_ptx_update_timeout(struct lacp_port *, uint8_t); 148 static void lacp_sm_ptx_tx_schedule(struct lacp_port *); 149 static void lacp_sm_ptx_timer(struct lacp_port *); 150 151 /* transmit machine */ 152 153 static void lacp_sm_tx(struct lacp_port *); 154 static void lacp_sm_assert_ntt(struct lacp_port *); 155 156 static void lacp_run_timers(struct lacp_port *); 157 static int lacp_compare_peerinfo(const struct lacp_peerinfo *, 158 const struct lacp_peerinfo *); 159 static int lacp_compare_systemid(const struct lacp_systemid *, 160 const struct lacp_systemid *); 161 static void lacp_port_enable(struct lacp_port *); 162 static void lacp_port_disable(struct lacp_port *); 163 static void lacp_select(struct lacp_port *); 164 static void lacp_unselect(struct lacp_port *); 165 static void lacp_disable_collecting(struct lacp_port *); 166 static void lacp_enable_collecting(struct lacp_port *); 167 static void lacp_disable_distributing(struct lacp_port *); 168 static void lacp_enable_distributing(struct lacp_port *); 169 static int lacp_xmit_lacpdu(struct lacp_port *); 170 static int lacp_xmit_marker(struct lacp_port *); 171 172 /* Debugging */ 173 174 static void lacp_dump_lacpdu(const struct lacpdu *); 175 static const char *lacp_format_partner(const struct lacp_peerinfo *, char *, 176 size_t); 177 static const char *lacp_format_lagid(const struct lacp_peerinfo *, 178 const struct lacp_peerinfo *, char *, size_t); 179 static const char *lacp_format_lagid_aggregator(const struct lacp_aggregator *, 180 char *, size_t); 181 static const char *lacp_format_state(uint8_t, char *, size_t); 182 static const char *lacp_format_mac(const uint8_t *, char *, size_t); 183 static const char *lacp_format_systemid(const struct lacp_systemid *, char *, 184 size_t); 185 static const char *lacp_format_portid(const struct lacp_portid *, char *, 186 size_t); 187 static void lacp_dprintf(const struct lacp_port *, const char *, ...) 188 __attribute__((__format__(__printf__, 2, 3))); 189 190 static int lacp_debug = 0; 191 SYSCTL_NODE(_net_link_lagg, OID_AUTO, lacp, CTLFLAG_RD, 0, "ieee802.3ad"); 192 SYSCTL_INT(_net_link_lagg_lacp, OID_AUTO, debug, CTLFLAG_RW | CTLFLAG_TUN, 193 &lacp_debug, 0, "Enable LACP debug logging (1=debug, 2=trace)"); 194 TUNABLE_INT("net.link.lagg.lacp.debug", &lacp_debug); 195 196 #define LACP_DPRINTF(a) if (lacp_debug & 0x01) { lacp_dprintf a ; } 197 #define LACP_TRACE(a) if (lacp_debug & 0x02) { lacp_dprintf(a,"%s\n",__func__); } 198 #define LACP_TPRINTF(a) if (lacp_debug & 0x04) { lacp_dprintf a ; } 199 200 /* 201 * partner administration variables. 202 * XXX should be configurable. 203 */ 204 205 static const struct lacp_peerinfo lacp_partner_admin_optimistic = { 206 .lip_systemid = { .lsi_prio = 0xffff }, 207 .lip_portid = { .lpi_prio = 0xffff }, 208 .lip_state = LACP_STATE_SYNC | LACP_STATE_AGGREGATION | 209 LACP_STATE_COLLECTING | LACP_STATE_DISTRIBUTING, 210 }; 211 212 static const struct lacp_peerinfo lacp_partner_admin_strict = { 213 .lip_systemid = { .lsi_prio = 0xffff }, 214 .lip_portid = { .lpi_prio = 0xffff }, 215 .lip_state = 0, 216 }; 217 218 static const lacp_timer_func_t lacp_timer_funcs[LACP_NTIMER] = { 219 [LACP_TIMER_CURRENT_WHILE] = lacp_sm_rx_timer, 220 [LACP_TIMER_PERIODIC] = lacp_sm_ptx_timer, 221 [LACP_TIMER_WAIT_WHILE] = lacp_sm_mux_timer, 222 }; 223 224 struct mbuf * 225 lacp_input(struct lagg_port *lgp, struct mbuf *m) 226 { 227 struct lacp_port *lp = LACP_PORT(lgp); 228 uint8_t subtype; 229 230 if (m->m_pkthdr.len < sizeof(struct ether_header) + sizeof(subtype)) { 231 m_freem(m); 232 return (NULL); 233 } 234 235 m_copydata(m, sizeof(struct ether_header), sizeof(subtype), &subtype); 236 switch (subtype) { 237 case SLOWPROTOCOLS_SUBTYPE_LACP: 238 lacp_pdu_input(lp, m); 239 return (NULL); 240 241 case SLOWPROTOCOLS_SUBTYPE_MARKER: 242 lacp_marker_input(lp, m); 243 return (NULL); 244 } 245 246 /* Not a subtype we are interested in */ 247 return (m); 248 } 249 250 /* 251 * lacp_pdu_input: process lacpdu 252 */ 253 static int 254 lacp_pdu_input(struct lacp_port *lp, struct mbuf *m) 255 { 256 struct lacp_softc *lsc = lp->lp_lsc; 257 struct lacpdu *du; 258 int error = 0; 259 260 if (m->m_pkthdr.len != sizeof(*du)) { 261 goto bad; 262 } 263 264 if ((m->m_flags & M_MCAST) == 0) { 265 goto bad; 266 } 267 268 if (m->m_len < sizeof(*du)) { 269 m = m_pullup(m, sizeof(*du)); 270 if (m == NULL) { 271 return (ENOMEM); 272 } 273 } 274 275 du = mtod(m, struct lacpdu *); 276 277 if (memcmp(&du->ldu_eh.ether_dhost, 278 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 279 goto bad; 280 } 281 282 /* 283 * ignore the version for compatibility with 284 * the future protocol revisions. 285 */ 286 #if 0 287 if (du->ldu_sph.sph_version != 1) { 288 goto bad; 289 } 290 #endif 291 292 /* 293 * ignore tlv types for compatibility with 294 * the future protocol revisions. 295 */ 296 if (tlv_check(du, sizeof(*du), &du->ldu_tlv_actor, 297 lacp_info_tlv_template, FALSE)) { 298 goto bad; 299 } 300 301 if (lacp_debug > 0) { 302 lacp_dprintf(lp, "lacpdu receive\n"); 303 lacp_dump_lacpdu(du); 304 } 305 306 if ((1 << lp->lp_ifp->if_dunit) & lp->lp_lsc->lsc_debug.lsc_rx_test) { 307 LACP_TPRINTF((lp, "Dropping RX PDU\n")); 308 goto bad; 309 } 310 311 LACP_LOCK(lsc); 312 lacp_sm_rx(lp, du); 313 LACP_UNLOCK(lsc); 314 315 m_freem(m); 316 return (error); 317 318 bad: 319 m_freem(m); 320 return (EINVAL); 321 } 322 323 static void 324 lacp_fill_actorinfo(struct lacp_port *lp, struct lacp_peerinfo *info) 325 { 326 struct lagg_port *lgp = lp->lp_lagg; 327 struct lagg_softc *sc = lgp->lp_softc; 328 329 info->lip_systemid.lsi_prio = htons(LACP_SYSTEM_PRIO); 330 memcpy(&info->lip_systemid.lsi_mac, 331 IF_LLADDR(sc->sc_ifp), ETHER_ADDR_LEN); 332 info->lip_portid.lpi_prio = htons(LACP_PORT_PRIO); 333 info->lip_portid.lpi_portno = htons(lp->lp_ifp->if_index); 334 info->lip_state = lp->lp_state; 335 } 336 337 static void 338 lacp_fill_markerinfo(struct lacp_port *lp, struct lacp_markerinfo *info) 339 { 340 struct ifnet *ifp = lp->lp_ifp; 341 342 /* Fill in the port index and system id (encoded as the MAC) */ 343 info->mi_rq_port = htons(ifp->if_index); 344 memcpy(&info->mi_rq_system, lp->lp_systemid.lsi_mac, ETHER_ADDR_LEN); 345 info->mi_rq_xid = htonl(0); 346 } 347 348 static int 349 lacp_xmit_lacpdu(struct lacp_port *lp) 350 { 351 struct lagg_port *lgp = lp->lp_lagg; 352 struct mbuf *m; 353 struct lacpdu *du; 354 int error; 355 356 LACP_LOCK_ASSERT(lp->lp_lsc); 357 358 m = m_gethdr(M_NOWAIT, MT_DATA); 359 if (m == NULL) { 360 return (ENOMEM); 361 } 362 m->m_len = m->m_pkthdr.len = sizeof(*du); 363 364 du = mtod(m, struct lacpdu *); 365 memset(du, 0, sizeof(*du)); 366 367 memcpy(&du->ldu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 368 ETHER_ADDR_LEN); 369 memcpy(&du->ldu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN); 370 du->ldu_eh.ether_type = htons(ETHERTYPE_SLOW); 371 372 du->ldu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_LACP; 373 du->ldu_sph.sph_version = 1; 374 375 TLV_SET(&du->ldu_tlv_actor, LACP_TYPE_ACTORINFO, sizeof(du->ldu_actor)); 376 du->ldu_actor = lp->lp_actor; 377 378 TLV_SET(&du->ldu_tlv_partner, LACP_TYPE_PARTNERINFO, 379 sizeof(du->ldu_partner)); 380 du->ldu_partner = lp->lp_partner; 381 382 TLV_SET(&du->ldu_tlv_collector, LACP_TYPE_COLLECTORINFO, 383 sizeof(du->ldu_collector)); 384 du->ldu_collector.lci_maxdelay = 0; 385 386 if (lacp_debug > 0) { 387 lacp_dprintf(lp, "lacpdu transmit\n"); 388 lacp_dump_lacpdu(du); 389 } 390 391 m->m_flags |= M_MCAST; 392 393 /* 394 * XXX should use higher priority queue. 395 * otherwise network congestion can break aggregation. 396 */ 397 398 error = lagg_enqueue(lp->lp_ifp, m); 399 return (error); 400 } 401 402 static int 403 lacp_xmit_marker(struct lacp_port *lp) 404 { 405 struct lagg_port *lgp = lp->lp_lagg; 406 struct mbuf *m; 407 struct markerdu *mdu; 408 int error; 409 410 LACP_LOCK_ASSERT(lp->lp_lsc); 411 412 m = m_gethdr(M_NOWAIT, MT_DATA); 413 if (m == NULL) { 414 return (ENOMEM); 415 } 416 m->m_len = m->m_pkthdr.len = sizeof(*mdu); 417 418 mdu = mtod(m, struct markerdu *); 419 memset(mdu, 0, sizeof(*mdu)); 420 421 memcpy(&mdu->mdu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 422 ETHER_ADDR_LEN); 423 memcpy(&mdu->mdu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN); 424 mdu->mdu_eh.ether_type = htons(ETHERTYPE_SLOW); 425 426 mdu->mdu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_MARKER; 427 mdu->mdu_sph.sph_version = 1; 428 429 /* Bump the transaction id and copy over the marker info */ 430 lp->lp_marker.mi_rq_xid = htonl(ntohl(lp->lp_marker.mi_rq_xid) + 1); 431 TLV_SET(&mdu->mdu_tlv, MARKER_TYPE_INFO, sizeof(mdu->mdu_info)); 432 mdu->mdu_info = lp->lp_marker; 433 434 LACP_DPRINTF((lp, "marker transmit, port=%u, sys=%6D, id=%u\n", 435 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, ":", 436 ntohl(mdu->mdu_info.mi_rq_xid))); 437 438 m->m_flags |= M_MCAST; 439 error = lagg_enqueue(lp->lp_ifp, m); 440 return (error); 441 } 442 443 void 444 lacp_linkstate(struct lagg_port *lgp) 445 { 446 struct lacp_port *lp = LACP_PORT(lgp); 447 struct lacp_softc *lsc = lp->lp_lsc; 448 struct ifnet *ifp = lgp->lp_ifp; 449 struct ifmediareq ifmr; 450 int error = 0; 451 u_int media; 452 uint8_t old_state; 453 uint16_t old_key; 454 455 bzero((char *)&ifmr, sizeof(ifmr)); 456 error = (*ifp->if_ioctl)(ifp, SIOCGIFMEDIA, (caddr_t)&ifmr); 457 if (error != 0) 458 return; 459 460 LACP_LOCK(lsc); 461 media = ifmr.ifm_active; 462 LACP_DPRINTF((lp, "media changed 0x%x -> 0x%x, ether = %d, fdx = %d, " 463 "link = %d\n", lp->lp_media, media, IFM_TYPE(media) == IFM_ETHER, 464 (media & IFM_FDX) != 0, ifp->if_link_state == LINK_STATE_UP)); 465 old_state = lp->lp_state; 466 old_key = lp->lp_key; 467 468 lp->lp_media = media; 469 /* 470 * If the port is not an active full duplex Ethernet link then it can 471 * not be aggregated. 472 */ 473 if (IFM_TYPE(media) != IFM_ETHER || (media & IFM_FDX) == 0 || 474 ifp->if_link_state != LINK_STATE_UP) { 475 lacp_port_disable(lp); 476 } else { 477 lacp_port_enable(lp); 478 } 479 lp->lp_key = lacp_compose_key(lp); 480 481 if (old_state != lp->lp_state || old_key != lp->lp_key) { 482 LACP_DPRINTF((lp, "-> UNSELECTED\n")); 483 lp->lp_selected = LACP_UNSELECTED; 484 } 485 LACP_UNLOCK(lsc); 486 } 487 488 static void 489 lacp_tick(void *arg) 490 { 491 struct lacp_softc *lsc = arg; 492 struct lacp_port *lp; 493 494 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { 495 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) 496 continue; 497 498 lacp_run_timers(lp); 499 500 lacp_select(lp); 501 lacp_sm_mux(lp); 502 lacp_sm_tx(lp); 503 lacp_sm_ptx_tx_schedule(lp); 504 } 505 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc); 506 } 507 508 int 509 lacp_port_create(struct lagg_port *lgp) 510 { 511 struct lagg_softc *sc = lgp->lp_softc; 512 struct lacp_softc *lsc = LACP_SOFTC(sc); 513 struct lacp_port *lp; 514 struct ifnet *ifp = lgp->lp_ifp; 515 struct sockaddr_dl sdl; 516 struct ifmultiaddr *rifma = NULL; 517 int error; 518 519 boolean_t active = TRUE; /* XXX should be configurable */ 520 boolean_t fast = FALSE; /* XXX should be configurable */ 521 522 bzero((char *)&sdl, sizeof(sdl)); 523 sdl.sdl_len = sizeof(sdl); 524 sdl.sdl_family = AF_LINK; 525 sdl.sdl_index = ifp->if_index; 526 sdl.sdl_type = IFT_ETHER; 527 sdl.sdl_alen = ETHER_ADDR_LEN; 528 529 bcopy(ðermulticastaddr_slowprotocols, 530 LLADDR(&sdl), ETHER_ADDR_LEN); 531 error = if_addmulti(ifp, (struct sockaddr *)&sdl, &rifma); 532 if (error) { 533 printf("%s: ADDMULTI failed on %s\n", __func__, lgp->lp_ifname); 534 return (error); 535 } 536 537 lp = malloc(sizeof(struct lacp_port), 538 M_DEVBUF, M_NOWAIT|M_ZERO); 539 if (lp == NULL) 540 return (ENOMEM); 541 542 LACP_LOCK(lsc); 543 lgp->lp_psc = (caddr_t)lp; 544 lp->lp_ifp = ifp; 545 lp->lp_lagg = lgp; 546 lp->lp_lsc = lsc; 547 lp->lp_ifma = rifma; 548 549 LIST_INSERT_HEAD(&lsc->lsc_ports, lp, lp_next); 550 551 lacp_fill_actorinfo(lp, &lp->lp_actor); 552 lacp_fill_markerinfo(lp, &lp->lp_marker); 553 lp->lp_state = 554 (active ? LACP_STATE_ACTIVITY : 0) | 555 (fast ? LACP_STATE_TIMEOUT : 0); 556 lp->lp_aggregator = NULL; 557 lacp_sm_rx_set_expired(lp); 558 LACP_UNLOCK(lsc); 559 lacp_linkstate(lgp); 560 561 return (0); 562 } 563 564 void 565 lacp_port_destroy(struct lagg_port *lgp) 566 { 567 struct lacp_port *lp = LACP_PORT(lgp); 568 struct lacp_softc *lsc = lp->lp_lsc; 569 int i; 570 571 LACP_LOCK(lsc); 572 for (i = 0; i < LACP_NTIMER; i++) { 573 LACP_TIMER_DISARM(lp, i); 574 } 575 576 lacp_disable_collecting(lp); 577 lacp_disable_distributing(lp); 578 lacp_unselect(lp); 579 580 /* The address may have already been removed by if_purgemaddrs() */ 581 if (!lgp->lp_detaching) 582 if_delmulti_ifma(lp->lp_ifma); 583 584 LIST_REMOVE(lp, lp_next); 585 LACP_UNLOCK(lsc); 586 free(lp, M_DEVBUF); 587 } 588 589 void 590 lacp_req(struct lagg_softc *sc, caddr_t data) 591 { 592 struct lacp_opreq *req = (struct lacp_opreq *)data; 593 struct lacp_softc *lsc = LACP_SOFTC(sc); 594 struct lacp_aggregator *la; 595 596 bzero(req, sizeof(struct lacp_opreq)); 597 598 /* 599 * If the LACP softc is NULL, return with the opreq structure full of 600 * zeros. It is normal for the softc to be NULL while the lagg is 601 * being destroyed. 602 */ 603 if (NULL == lsc) 604 return; 605 606 la = lsc->lsc_active_aggregator; 607 LACP_LOCK(lsc); 608 if (la != NULL) { 609 req->actor_prio = ntohs(la->la_actor.lip_systemid.lsi_prio); 610 memcpy(&req->actor_mac, &la->la_actor.lip_systemid.lsi_mac, 611 ETHER_ADDR_LEN); 612 req->actor_key = ntohs(la->la_actor.lip_key); 613 req->actor_portprio = ntohs(la->la_actor.lip_portid.lpi_prio); 614 req->actor_portno = ntohs(la->la_actor.lip_portid.lpi_portno); 615 req->actor_state = la->la_actor.lip_state; 616 617 req->partner_prio = ntohs(la->la_partner.lip_systemid.lsi_prio); 618 memcpy(&req->partner_mac, &la->la_partner.lip_systemid.lsi_mac, 619 ETHER_ADDR_LEN); 620 req->partner_key = ntohs(la->la_partner.lip_key); 621 req->partner_portprio = ntohs(la->la_partner.lip_portid.lpi_prio); 622 req->partner_portno = ntohs(la->la_partner.lip_portid.lpi_portno); 623 req->partner_state = la->la_partner.lip_state; 624 } 625 LACP_UNLOCK(lsc); 626 } 627 628 void 629 lacp_portreq(struct lagg_port *lgp, caddr_t data) 630 { 631 struct lacp_opreq *req = (struct lacp_opreq *)data; 632 struct lacp_port *lp = LACP_PORT(lgp); 633 struct lacp_softc *lsc = lp->lp_lsc; 634 635 LACP_LOCK(lsc); 636 req->actor_prio = ntohs(lp->lp_actor.lip_systemid.lsi_prio); 637 memcpy(&req->actor_mac, &lp->lp_actor.lip_systemid.lsi_mac, 638 ETHER_ADDR_LEN); 639 req->actor_key = ntohs(lp->lp_actor.lip_key); 640 req->actor_portprio = ntohs(lp->lp_actor.lip_portid.lpi_prio); 641 req->actor_portno = ntohs(lp->lp_actor.lip_portid.lpi_portno); 642 req->actor_state = lp->lp_actor.lip_state; 643 644 req->partner_prio = ntohs(lp->lp_partner.lip_systemid.lsi_prio); 645 memcpy(&req->partner_mac, &lp->lp_partner.lip_systemid.lsi_mac, 646 ETHER_ADDR_LEN); 647 req->partner_key = ntohs(lp->lp_partner.lip_key); 648 req->partner_portprio = ntohs(lp->lp_partner.lip_portid.lpi_prio); 649 req->partner_portno = ntohs(lp->lp_partner.lip_portid.lpi_portno); 650 req->partner_state = lp->lp_partner.lip_state; 651 LACP_UNLOCK(lsc); 652 } 653 654 static void 655 lacp_disable_collecting(struct lacp_port *lp) 656 { 657 LACP_DPRINTF((lp, "collecting disabled\n")); 658 lp->lp_state &= ~LACP_STATE_COLLECTING; 659 } 660 661 static void 662 lacp_enable_collecting(struct lacp_port *lp) 663 { 664 LACP_DPRINTF((lp, "collecting enabled\n")); 665 lp->lp_state |= LACP_STATE_COLLECTING; 666 } 667 668 static void 669 lacp_disable_distributing(struct lacp_port *lp) 670 { 671 struct lacp_aggregator *la = lp->lp_aggregator; 672 struct lacp_softc *lsc = lp->lp_lsc; 673 struct lagg_softc *sc = lsc->lsc_softc; 674 char buf[LACP_LAGIDSTR_MAX+1]; 675 676 LACP_LOCK_ASSERT(lsc); 677 678 if (la == NULL || (lp->lp_state & LACP_STATE_DISTRIBUTING) == 0) { 679 return; 680 } 681 682 KASSERT(!TAILQ_EMPTY(&la->la_ports), ("no aggregator ports")); 683 KASSERT(la->la_nports > 0, ("nports invalid (%d)", la->la_nports)); 684 KASSERT(la->la_refcnt >= la->la_nports, ("aggregator refcnt invalid")); 685 686 LACP_DPRINTF((lp, "disable distributing on aggregator %s, " 687 "nports %d -> %d\n", 688 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 689 la->la_nports, la->la_nports - 1)); 690 691 TAILQ_REMOVE(&la->la_ports, lp, lp_dist_q); 692 la->la_nports--; 693 sc->sc_active = la->la_nports; 694 695 if (lsc->lsc_active_aggregator == la) { 696 lacp_suppress_distributing(lsc, la); 697 lacp_select_active_aggregator(lsc); 698 /* regenerate the port map, the active aggregator has changed */ 699 lacp_update_portmap(lsc); 700 } 701 702 lp->lp_state &= ~LACP_STATE_DISTRIBUTING; 703 } 704 705 static void 706 lacp_enable_distributing(struct lacp_port *lp) 707 { 708 struct lacp_aggregator *la = lp->lp_aggregator; 709 struct lacp_softc *lsc = lp->lp_lsc; 710 struct lagg_softc *sc = lsc->lsc_softc; 711 char buf[LACP_LAGIDSTR_MAX+1]; 712 713 LACP_LOCK_ASSERT(lsc); 714 715 if ((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0) { 716 return; 717 } 718 719 LACP_DPRINTF((lp, "enable distributing on aggregator %s, " 720 "nports %d -> %d\n", 721 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 722 la->la_nports, la->la_nports + 1)); 723 724 KASSERT(la->la_refcnt > la->la_nports, ("aggregator refcnt invalid")); 725 TAILQ_INSERT_HEAD(&la->la_ports, lp, lp_dist_q); 726 la->la_nports++; 727 sc->sc_active = la->la_nports; 728 729 lp->lp_state |= LACP_STATE_DISTRIBUTING; 730 731 if (lsc->lsc_active_aggregator == la) { 732 lacp_suppress_distributing(lsc, la); 733 lacp_update_portmap(lsc); 734 } else 735 /* try to become the active aggregator */ 736 lacp_select_active_aggregator(lsc); 737 } 738 739 static void 740 lacp_transit_expire(void *vp) 741 { 742 struct lacp_softc *lsc = vp; 743 744 LACP_LOCK_ASSERT(lsc); 745 746 LACP_TRACE(NULL); 747 748 lsc->lsc_suppress_distributing = FALSE; 749 } 750 751 static void 752 lacp_attach_sysctl(struct lacp_softc *lsc, struct sysctl_oid *p_oid) 753 { 754 struct lagg_softc *sc = lsc->lsc_softc; 755 756 SYSCTL_ADD_UINT(&sc->ctx, SYSCTL_CHILDREN(p_oid), OID_AUTO, 757 "lacp_strict_mode", 758 CTLFLAG_RW, 759 &lsc->lsc_strict_mode, 760 lsc->lsc_strict_mode, 761 "Enable LACP strict mode"); 762 } 763 764 static void 765 lacp_attach_sysctl_debug(struct lacp_softc *lsc, struct sysctl_oid *p_oid) 766 { 767 struct lagg_softc *sc = lsc->lsc_softc; 768 struct sysctl_oid *oid; 769 770 /* Create a child of the parent lagg interface */ 771 oid = SYSCTL_ADD_NODE(&sc->ctx, SYSCTL_CHILDREN(p_oid), 772 OID_AUTO, "debug", CTLFLAG_RD, NULL, "DEBUG"); 773 774 SYSCTL_ADD_UINT(&sc->ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 775 "rx_test", 776 CTLFLAG_RW, 777 &lsc->lsc_debug.lsc_rx_test, 778 lsc->lsc_debug.lsc_rx_test, 779 "Bitmap of if_dunit entries to drop RX frames for"); 780 SYSCTL_ADD_UINT(&sc->ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 781 "tx_test", 782 CTLFLAG_RW, 783 &lsc->lsc_debug.lsc_tx_test, 784 lsc->lsc_debug.lsc_tx_test, 785 "Bitmap of if_dunit entries to drop TX frames for"); 786 } 787 788 int 789 lacp_attach(struct lagg_softc *sc) 790 { 791 struct lacp_softc *lsc; 792 struct sysctl_oid *oid; 793 794 lsc = malloc(sizeof(struct lacp_softc), 795 M_DEVBUF, M_NOWAIT|M_ZERO); 796 if (lsc == NULL) 797 return (ENOMEM); 798 799 sc->sc_psc = (caddr_t)lsc; 800 lsc->lsc_softc = sc; 801 802 lsc->lsc_hashkey = arc4random(); 803 lsc->lsc_active_aggregator = NULL; 804 lsc->lsc_strict_mode = 1; 805 LACP_LOCK_INIT(lsc); 806 TAILQ_INIT(&lsc->lsc_aggregators); 807 LIST_INIT(&lsc->lsc_ports); 808 809 /* Create a child of the parent lagg interface */ 810 oid = SYSCTL_ADD_NODE(&sc->ctx, SYSCTL_CHILDREN(sc->sc_oid), 811 OID_AUTO, "lacp", CTLFLAG_RD, NULL, "LACP"); 812 813 /* Attach sysctl nodes */ 814 lacp_attach_sysctl(lsc, oid); 815 lacp_attach_sysctl_debug(lsc, oid); 816 817 callout_init_mtx(&lsc->lsc_transit_callout, &lsc->lsc_mtx, 0); 818 callout_init_mtx(&lsc->lsc_callout, &lsc->lsc_mtx, 0); 819 820 /* if the lagg is already up then do the same */ 821 if (sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING) 822 lacp_init(sc); 823 824 return (0); 825 } 826 827 int 828 lacp_detach(struct lagg_softc *sc) 829 { 830 struct lacp_softc *lsc = LACP_SOFTC(sc); 831 832 KASSERT(TAILQ_EMPTY(&lsc->lsc_aggregators), 833 ("aggregators still active")); 834 KASSERT(lsc->lsc_active_aggregator == NULL, 835 ("aggregator still attached")); 836 837 sc->sc_psc = NULL; 838 callout_drain(&lsc->lsc_transit_callout); 839 callout_drain(&lsc->lsc_callout); 840 841 LACP_LOCK_DESTROY(lsc); 842 free(lsc, M_DEVBUF); 843 return (0); 844 } 845 846 void 847 lacp_init(struct lagg_softc *sc) 848 { 849 struct lacp_softc *lsc = LACP_SOFTC(sc); 850 851 LACP_LOCK(lsc); 852 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc); 853 LACP_UNLOCK(lsc); 854 } 855 856 void 857 lacp_stop(struct lagg_softc *sc) 858 { 859 struct lacp_softc *lsc = LACP_SOFTC(sc); 860 861 LACP_LOCK(lsc); 862 callout_stop(&lsc->lsc_transit_callout); 863 callout_stop(&lsc->lsc_callout); 864 LACP_UNLOCK(lsc); 865 } 866 867 struct lagg_port * 868 lacp_select_tx_port(struct lagg_softc *sc, struct mbuf *m) 869 { 870 struct lacp_softc *lsc = LACP_SOFTC(sc); 871 struct lacp_portmap *pm; 872 struct lacp_port *lp; 873 uint32_t hash; 874 875 if (__predict_false(lsc->lsc_suppress_distributing)) { 876 LACP_DPRINTF((NULL, "%s: waiting transit\n", __func__)); 877 return (NULL); 878 } 879 880 pm = &lsc->lsc_pmap[lsc->lsc_activemap]; 881 if (pm->pm_count == 0) { 882 LACP_DPRINTF((NULL, "%s: no active aggregator\n", __func__)); 883 return (NULL); 884 } 885 886 if (sc->use_flowid && 887 M_HASHTYPE_GET(m) != M_HASHTYPE_NONE) 888 hash = m->m_pkthdr.flowid >> sc->flowid_shift; 889 else 890 hash = lagg_hashmbuf(sc, m, lsc->lsc_hashkey); 891 hash %= pm->pm_count; 892 lp = pm->pm_map[hash]; 893 894 KASSERT((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0, 895 ("aggregated port is not distributing")); 896 897 return (lp->lp_lagg); 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 lacp_xmit_marker(lp); 921 } 922 923 /* set a timeout for the marker frames */ 924 callout_reset(&lsc->lsc_transit_callout, 925 LACP_TRANSIT_DELAY * hz / 1000, lacp_transit_expire, lsc); 926 } 927 928 static int 929 lacp_compare_peerinfo(const struct lacp_peerinfo *a, 930 const struct lacp_peerinfo *b) 931 { 932 return (memcmp(a, b, offsetof(struct lacp_peerinfo, lip_state))); 933 } 934 935 static int 936 lacp_compare_systemid(const struct lacp_systemid *a, 937 const struct lacp_systemid *b) 938 { 939 return (memcmp(a, b, sizeof(*a))); 940 } 941 942 #if 0 /* unused */ 943 static int 944 lacp_compare_portid(const struct lacp_portid *a, 945 const struct lacp_portid *b) 946 { 947 return (memcmp(a, b, sizeof(*a))); 948 } 949 #endif 950 951 static uint64_t 952 lacp_aggregator_bandwidth(struct lacp_aggregator *la) 953 { 954 struct lacp_port *lp; 955 uint64_t speed; 956 957 lp = TAILQ_FIRST(&la->la_ports); 958 if (lp == NULL) { 959 return (0); 960 } 961 962 speed = ifmedia_baudrate(lp->lp_media); 963 speed *= la->la_nports; 964 if (speed == 0) { 965 LACP_DPRINTF((lp, "speed 0? media=0x%x nports=%d\n", 966 lp->lp_media, la->la_nports)); 967 } 968 969 return (speed); 970 } 971 972 /* 973 * lacp_select_active_aggregator: select an aggregator to be used to transmit 974 * packets from lagg(4) interface. 975 */ 976 977 static void 978 lacp_select_active_aggregator(struct lacp_softc *lsc) 979 { 980 struct lacp_aggregator *la; 981 struct lacp_aggregator *best_la = NULL; 982 uint64_t best_speed = 0; 983 char buf[LACP_LAGIDSTR_MAX+1]; 984 985 LACP_TRACE(NULL); 986 987 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 988 uint64_t speed; 989 990 if (la->la_nports == 0) { 991 continue; 992 } 993 994 speed = lacp_aggregator_bandwidth(la); 995 LACP_DPRINTF((NULL, "%s, speed=%jd, nports=%d\n", 996 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 997 speed, la->la_nports)); 998 999 /* This aggregator is chosen if 1000 * the partner has a better system priority 1001 * or, the total aggregated speed is higher 1002 * or, it is already the chosen aggregator 1003 */ 1004 if ((best_la != NULL && LACP_SYS_PRI(la->la_partner) < 1005 LACP_SYS_PRI(best_la->la_partner)) || 1006 speed > best_speed || 1007 (speed == best_speed && 1008 la == lsc->lsc_active_aggregator)) { 1009 best_la = la; 1010 best_speed = speed; 1011 } 1012 } 1013 1014 KASSERT(best_la == NULL || best_la->la_nports > 0, 1015 ("invalid aggregator refcnt")); 1016 KASSERT(best_la == NULL || !TAILQ_EMPTY(&best_la->la_ports), 1017 ("invalid aggregator list")); 1018 1019 if (lsc->lsc_active_aggregator != best_la) { 1020 LACP_DPRINTF((NULL, "active aggregator changed\n")); 1021 LACP_DPRINTF((NULL, "old %s\n", 1022 lacp_format_lagid_aggregator(lsc->lsc_active_aggregator, 1023 buf, sizeof(buf)))); 1024 } else { 1025 LACP_DPRINTF((NULL, "active aggregator not changed\n")); 1026 } 1027 LACP_DPRINTF((NULL, "new %s\n", 1028 lacp_format_lagid_aggregator(best_la, buf, sizeof(buf)))); 1029 1030 if (lsc->lsc_active_aggregator != best_la) { 1031 lsc->lsc_active_aggregator = best_la; 1032 lacp_update_portmap(lsc); 1033 if (best_la) { 1034 lacp_suppress_distributing(lsc, best_la); 1035 } 1036 } 1037 } 1038 1039 /* 1040 * Updated the inactive portmap array with the new list of ports and 1041 * make it live. 1042 */ 1043 static void 1044 lacp_update_portmap(struct lacp_softc *lsc) 1045 { 1046 struct lagg_softc *sc = lsc->lsc_softc; 1047 struct lacp_aggregator *la; 1048 struct lacp_portmap *p; 1049 struct lacp_port *lp; 1050 uint64_t speed; 1051 u_int newmap; 1052 int i; 1053 1054 newmap = lsc->lsc_activemap == 0 ? 1 : 0; 1055 p = &lsc->lsc_pmap[newmap]; 1056 la = lsc->lsc_active_aggregator; 1057 speed = 0; 1058 bzero(p, sizeof(struct lacp_portmap)); 1059 1060 if (la != NULL && la->la_nports > 0) { 1061 p->pm_count = la->la_nports; 1062 i = 0; 1063 TAILQ_FOREACH(lp, &la->la_ports, lp_dist_q) 1064 p->pm_map[i++] = lp; 1065 KASSERT(i == p->pm_count, ("Invalid port count")); 1066 speed = lacp_aggregator_bandwidth(la); 1067 } 1068 sc->sc_ifp->if_baudrate = speed; 1069 1070 /* switch the active portmap over */ 1071 atomic_store_rel_int(&lsc->lsc_activemap, newmap); 1072 LACP_DPRINTF((NULL, "Set table %d with %d ports\n", 1073 lsc->lsc_activemap, 1074 lsc->lsc_pmap[lsc->lsc_activemap].pm_count)); 1075 } 1076 1077 static uint16_t 1078 lacp_compose_key(struct lacp_port *lp) 1079 { 1080 struct lagg_port *lgp = lp->lp_lagg; 1081 struct lagg_softc *sc = lgp->lp_softc; 1082 u_int media = lp->lp_media; 1083 uint16_t key; 1084 1085 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) { 1086 1087 /* 1088 * non-aggregatable links should have unique keys. 1089 * 1090 * XXX this isn't really unique as if_index is 16 bit. 1091 */ 1092 1093 /* bit 0..14: (some bits of) if_index of this port */ 1094 key = lp->lp_ifp->if_index; 1095 /* bit 15: 1 */ 1096 key |= 0x8000; 1097 } else { 1098 u_int subtype = IFM_SUBTYPE(media); 1099 1100 KASSERT(IFM_TYPE(media) == IFM_ETHER, ("invalid media type")); 1101 KASSERT((media & IFM_FDX) != 0, ("aggregating HDX interface")); 1102 1103 /* bit 0..4: IFM_SUBTYPE modulo speed */ 1104 switch (subtype) { 1105 case IFM_10_T: 1106 case IFM_10_2: 1107 case IFM_10_5: 1108 case IFM_10_STP: 1109 case IFM_10_FL: 1110 key = IFM_10_T; 1111 break; 1112 case IFM_100_TX: 1113 case IFM_100_FX: 1114 case IFM_100_T4: 1115 case IFM_100_VG: 1116 case IFM_100_T2: 1117 case IFM_100_T: 1118 key = IFM_100_TX; 1119 break; 1120 case IFM_1000_SX: 1121 case IFM_1000_LX: 1122 case IFM_1000_CX: 1123 case IFM_1000_T: 1124 case IFM_1000_KX: 1125 case IFM_1000_SGMII: 1126 case IFM_1000_CX_SGMII: 1127 key = IFM_1000_SX; 1128 break; 1129 case IFM_10G_LR: 1130 case IFM_10G_SR: 1131 case IFM_10G_CX4: 1132 case IFM_10G_TWINAX: 1133 case IFM_10G_TWINAX_LONG: 1134 case IFM_10G_LRM: 1135 case IFM_10G_T: 1136 case IFM_10G_KX4: 1137 case IFM_10G_KR: 1138 case IFM_10G_CR1: 1139 case IFM_10G_ER: 1140 case IFM_10G_SFI: 1141 key = IFM_10G_LR; 1142 break; 1143 case IFM_20G_KR2: 1144 key = IFM_20G_KR2; 1145 break; 1146 case IFM_2500_KX: 1147 case IFM_2500_T: 1148 key = IFM_2500_KX; 1149 break; 1150 case IFM_5000_T: 1151 key = IFM_5000_T; 1152 break; 1153 case IFM_50G_PCIE: 1154 case IFM_50G_CR2: 1155 case IFM_50G_KR2: 1156 key = IFM_50G_PCIE; 1157 break; 1158 case IFM_56G_R4: 1159 key = IFM_56G_R4; 1160 break; 1161 case IFM_25G_PCIE: 1162 case IFM_25G_CR: 1163 case IFM_25G_KR: 1164 case IFM_25G_SR: 1165 key = IFM_25G_PCIE; 1166 break; 1167 case IFM_40G_CR4: 1168 case IFM_40G_SR4: 1169 case IFM_40G_LR4: 1170 case IFM_40G_XLPPI: 1171 case IFM_40G_KR4: 1172 key = IFM_40G_CR4; 1173 break; 1174 case IFM_100G_CR4: 1175 case IFM_100G_SR4: 1176 case IFM_100G_KR4: 1177 case IFM_100G_LR4: 1178 key = IFM_100G_CR4; 1179 break; 1180 default: 1181 key = subtype; 1182 break; 1183 } 1184 /* bit 5..14: (some bits of) if_index of lagg device */ 1185 key |= 0x7fe0 & ((sc->sc_ifp->if_index) << 5); 1186 /* bit 15: 0 */ 1187 } 1188 return (htons(key)); 1189 } 1190 1191 static void 1192 lacp_aggregator_addref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1193 { 1194 char buf[LACP_LAGIDSTR_MAX+1]; 1195 1196 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1197 __func__, 1198 lacp_format_lagid(&la->la_actor, &la->la_partner, 1199 buf, sizeof(buf)), 1200 la->la_refcnt, la->la_refcnt + 1)); 1201 1202 KASSERT(la->la_refcnt > 0, ("refcount <= 0")); 1203 la->la_refcnt++; 1204 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcount")); 1205 } 1206 1207 static void 1208 lacp_aggregator_delref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1209 { 1210 char buf[LACP_LAGIDSTR_MAX+1]; 1211 1212 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1213 __func__, 1214 lacp_format_lagid(&la->la_actor, &la->la_partner, 1215 buf, sizeof(buf)), 1216 la->la_refcnt, la->la_refcnt - 1)); 1217 1218 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcnt")); 1219 la->la_refcnt--; 1220 if (la->la_refcnt > 0) { 1221 return; 1222 } 1223 1224 KASSERT(la->la_refcnt == 0, ("refcount not zero")); 1225 KASSERT(lsc->lsc_active_aggregator != la, ("aggregator active")); 1226 1227 TAILQ_REMOVE(&lsc->lsc_aggregators, la, la_q); 1228 1229 free(la, M_DEVBUF); 1230 } 1231 1232 /* 1233 * lacp_aggregator_get: allocate an aggregator. 1234 */ 1235 1236 static struct lacp_aggregator * 1237 lacp_aggregator_get(struct lacp_softc *lsc, struct lacp_port *lp) 1238 { 1239 struct lacp_aggregator *la; 1240 1241 la = malloc(sizeof(*la), M_DEVBUF, M_NOWAIT); 1242 if (la) { 1243 la->la_refcnt = 1; 1244 la->la_nports = 0; 1245 TAILQ_INIT(&la->la_ports); 1246 la->la_pending = 0; 1247 TAILQ_INSERT_TAIL(&lsc->lsc_aggregators, la, la_q); 1248 } 1249 1250 return (la); 1251 } 1252 1253 /* 1254 * lacp_fill_aggregator_id: setup a newly allocated aggregator from a port. 1255 */ 1256 1257 static void 1258 lacp_fill_aggregator_id(struct lacp_aggregator *la, const struct lacp_port *lp) 1259 { 1260 lacp_fill_aggregator_id_peer(&la->la_partner, &lp->lp_partner); 1261 lacp_fill_aggregator_id_peer(&la->la_actor, &lp->lp_actor); 1262 1263 la->la_actor.lip_state = lp->lp_state & LACP_STATE_AGGREGATION; 1264 } 1265 1266 static void 1267 lacp_fill_aggregator_id_peer(struct lacp_peerinfo *lpi_aggr, 1268 const struct lacp_peerinfo *lpi_port) 1269 { 1270 memset(lpi_aggr, 0, sizeof(*lpi_aggr)); 1271 lpi_aggr->lip_systemid = lpi_port->lip_systemid; 1272 lpi_aggr->lip_key = lpi_port->lip_key; 1273 } 1274 1275 /* 1276 * lacp_aggregator_is_compatible: check if a port can join to an aggregator. 1277 */ 1278 1279 static int 1280 lacp_aggregator_is_compatible(const struct lacp_aggregator *la, 1281 const struct lacp_port *lp) 1282 { 1283 if (!(lp->lp_state & LACP_STATE_AGGREGATION) || 1284 !(lp->lp_partner.lip_state & LACP_STATE_AGGREGATION)) { 1285 return (0); 1286 } 1287 1288 if (!(la->la_actor.lip_state & LACP_STATE_AGGREGATION)) { 1289 return (0); 1290 } 1291 1292 if (!lacp_peerinfo_is_compatible(&la->la_partner, &lp->lp_partner)) { 1293 return (0); 1294 } 1295 1296 if (!lacp_peerinfo_is_compatible(&la->la_actor, &lp->lp_actor)) { 1297 return (0); 1298 } 1299 1300 return (1); 1301 } 1302 1303 static int 1304 lacp_peerinfo_is_compatible(const struct lacp_peerinfo *a, 1305 const struct lacp_peerinfo *b) 1306 { 1307 if (memcmp(&a->lip_systemid, &b->lip_systemid, 1308 sizeof(a->lip_systemid))) { 1309 return (0); 1310 } 1311 1312 if (memcmp(&a->lip_key, &b->lip_key, sizeof(a->lip_key))) { 1313 return (0); 1314 } 1315 1316 return (1); 1317 } 1318 1319 static void 1320 lacp_port_enable(struct lacp_port *lp) 1321 { 1322 lp->lp_state |= LACP_STATE_AGGREGATION; 1323 } 1324 1325 static void 1326 lacp_port_disable(struct lacp_port *lp) 1327 { 1328 lacp_set_mux(lp, LACP_MUX_DETACHED); 1329 1330 lp->lp_state &= ~LACP_STATE_AGGREGATION; 1331 lp->lp_selected = LACP_UNSELECTED; 1332 lacp_sm_rx_record_default(lp); 1333 lp->lp_partner.lip_state &= ~LACP_STATE_AGGREGATION; 1334 lp->lp_state &= ~LACP_STATE_EXPIRED; 1335 } 1336 1337 /* 1338 * lacp_select: select an aggregator. create one if necessary. 1339 */ 1340 static void 1341 lacp_select(struct lacp_port *lp) 1342 { 1343 struct lacp_softc *lsc = lp->lp_lsc; 1344 struct lacp_aggregator *la; 1345 char buf[LACP_LAGIDSTR_MAX+1]; 1346 1347 if (lp->lp_aggregator) { 1348 return; 1349 } 1350 1351 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1352 ("timer_wait_while still active")); 1353 1354 LACP_DPRINTF((lp, "port lagid=%s\n", 1355 lacp_format_lagid(&lp->lp_actor, &lp->lp_partner, 1356 buf, sizeof(buf)))); 1357 1358 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 1359 if (lacp_aggregator_is_compatible(la, lp)) { 1360 break; 1361 } 1362 } 1363 1364 if (la == NULL) { 1365 la = lacp_aggregator_get(lsc, lp); 1366 if (la == NULL) { 1367 LACP_DPRINTF((lp, "aggregator creation failed\n")); 1368 1369 /* 1370 * will retry on the next tick. 1371 */ 1372 1373 return; 1374 } 1375 lacp_fill_aggregator_id(la, lp); 1376 LACP_DPRINTF((lp, "aggregator created\n")); 1377 } else { 1378 LACP_DPRINTF((lp, "compatible aggregator found\n")); 1379 if (la->la_refcnt == LACP_MAX_PORTS) 1380 return; 1381 lacp_aggregator_addref(lsc, la); 1382 } 1383 1384 LACP_DPRINTF((lp, "aggregator lagid=%s\n", 1385 lacp_format_lagid(&la->la_actor, &la->la_partner, 1386 buf, sizeof(buf)))); 1387 1388 lp->lp_aggregator = la; 1389 lp->lp_selected = LACP_SELECTED; 1390 } 1391 1392 /* 1393 * lacp_unselect: finish unselect/detach process. 1394 */ 1395 1396 static void 1397 lacp_unselect(struct lacp_port *lp) 1398 { 1399 struct lacp_softc *lsc = lp->lp_lsc; 1400 struct lacp_aggregator *la = lp->lp_aggregator; 1401 1402 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1403 ("timer_wait_while still active")); 1404 1405 if (la == NULL) { 1406 return; 1407 } 1408 1409 lp->lp_aggregator = NULL; 1410 lacp_aggregator_delref(lsc, la); 1411 } 1412 1413 /* mux machine */ 1414 1415 static void 1416 lacp_sm_mux(struct lacp_port *lp) 1417 { 1418 struct lagg_port *lgp = lp->lp_lagg; 1419 struct lagg_softc *sc = lgp->lp_softc; 1420 enum lacp_mux_state new_state; 1421 boolean_t p_sync = 1422 (lp->lp_partner.lip_state & LACP_STATE_SYNC) != 0; 1423 boolean_t p_collecting = 1424 (lp->lp_partner.lip_state & LACP_STATE_COLLECTING) != 0; 1425 enum lacp_selected selected = lp->lp_selected; 1426 struct lacp_aggregator *la; 1427 1428 if (lacp_debug > 1) 1429 lacp_dprintf(lp, "%s: state= 0x%x, selected= 0x%x, " 1430 "p_sync= 0x%x, p_collecting= 0x%x\n", __func__, 1431 lp->lp_mux_state, selected, p_sync, p_collecting); 1432 1433 re_eval: 1434 la = lp->lp_aggregator; 1435 KASSERT(lp->lp_mux_state == LACP_MUX_DETACHED || la != NULL, 1436 ("MUX not detached")); 1437 new_state = lp->lp_mux_state; 1438 switch (lp->lp_mux_state) { 1439 case LACP_MUX_DETACHED: 1440 if (selected != LACP_UNSELECTED) { 1441 new_state = LACP_MUX_WAITING; 1442 } 1443 break; 1444 case LACP_MUX_WAITING: 1445 KASSERT(la->la_pending > 0 || 1446 !LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1447 ("timer_wait_while still active")); 1448 if (selected == LACP_SELECTED && la->la_pending == 0) { 1449 new_state = LACP_MUX_ATTACHED; 1450 } else if (selected == LACP_UNSELECTED) { 1451 new_state = LACP_MUX_DETACHED; 1452 } 1453 break; 1454 case LACP_MUX_ATTACHED: 1455 if (selected == LACP_SELECTED && p_sync) { 1456 new_state = LACP_MUX_COLLECTING; 1457 } else if (selected != LACP_SELECTED) { 1458 new_state = LACP_MUX_DETACHED; 1459 } 1460 break; 1461 case LACP_MUX_COLLECTING: 1462 if (selected == LACP_SELECTED && p_sync && p_collecting) { 1463 new_state = LACP_MUX_DISTRIBUTING; 1464 } else if (selected != LACP_SELECTED || !p_sync) { 1465 new_state = LACP_MUX_ATTACHED; 1466 } 1467 break; 1468 case LACP_MUX_DISTRIBUTING: 1469 if (selected != LACP_SELECTED || !p_sync || !p_collecting) { 1470 new_state = LACP_MUX_COLLECTING; 1471 lacp_dprintf(lp, "Interface stopped DISTRIBUTING, possible flapping\n"); 1472 sc->sc_flapping++; 1473 } 1474 break; 1475 default: 1476 panic("%s: unknown state", __func__); 1477 } 1478 1479 if (lp->lp_mux_state == new_state) { 1480 return; 1481 } 1482 1483 lacp_set_mux(lp, new_state); 1484 goto re_eval; 1485 } 1486 1487 static void 1488 lacp_set_mux(struct lacp_port *lp, enum lacp_mux_state new_state) 1489 { 1490 struct lacp_aggregator *la = lp->lp_aggregator; 1491 1492 if (lp->lp_mux_state == new_state) { 1493 return; 1494 } 1495 1496 switch (new_state) { 1497 case LACP_MUX_DETACHED: 1498 lp->lp_state &= ~LACP_STATE_SYNC; 1499 lacp_disable_distributing(lp); 1500 lacp_disable_collecting(lp); 1501 lacp_sm_assert_ntt(lp); 1502 /* cancel timer */ 1503 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE)) { 1504 KASSERT(la->la_pending > 0, 1505 ("timer_wait_while not active")); 1506 la->la_pending--; 1507 } 1508 LACP_TIMER_DISARM(lp, LACP_TIMER_WAIT_WHILE); 1509 lacp_unselect(lp); 1510 break; 1511 case LACP_MUX_WAITING: 1512 LACP_TIMER_ARM(lp, LACP_TIMER_WAIT_WHILE, 1513 LACP_AGGREGATE_WAIT_TIME); 1514 la->la_pending++; 1515 break; 1516 case LACP_MUX_ATTACHED: 1517 lp->lp_state |= LACP_STATE_SYNC; 1518 lacp_disable_collecting(lp); 1519 lacp_sm_assert_ntt(lp); 1520 break; 1521 case LACP_MUX_COLLECTING: 1522 lacp_enable_collecting(lp); 1523 lacp_disable_distributing(lp); 1524 lacp_sm_assert_ntt(lp); 1525 break; 1526 case LACP_MUX_DISTRIBUTING: 1527 lacp_enable_distributing(lp); 1528 break; 1529 default: 1530 panic("%s: unknown state", __func__); 1531 } 1532 1533 LACP_DPRINTF((lp, "mux_state %d -> %d\n", lp->lp_mux_state, new_state)); 1534 1535 lp->lp_mux_state = new_state; 1536 } 1537 1538 static void 1539 lacp_sm_mux_timer(struct lacp_port *lp) 1540 { 1541 struct lacp_aggregator *la = lp->lp_aggregator; 1542 char buf[LACP_LAGIDSTR_MAX+1]; 1543 1544 KASSERT(la->la_pending > 0, ("no pending event")); 1545 1546 LACP_DPRINTF((lp, "%s: aggregator %s, pending %d -> %d\n", __func__, 1547 lacp_format_lagid(&la->la_actor, &la->la_partner, 1548 buf, sizeof(buf)), 1549 la->la_pending, la->la_pending - 1)); 1550 1551 la->la_pending--; 1552 } 1553 1554 /* periodic transmit machine */ 1555 1556 static void 1557 lacp_sm_ptx_update_timeout(struct lacp_port *lp, uint8_t oldpstate) 1558 { 1559 if (LACP_STATE_EQ(oldpstate, lp->lp_partner.lip_state, 1560 LACP_STATE_TIMEOUT)) { 1561 return; 1562 } 1563 1564 LACP_DPRINTF((lp, "partner timeout changed\n")); 1565 1566 /* 1567 * FAST_PERIODIC -> SLOW_PERIODIC 1568 * or 1569 * SLOW_PERIODIC (-> PERIODIC_TX) -> FAST_PERIODIC 1570 * 1571 * let lacp_sm_ptx_tx_schedule to update timeout. 1572 */ 1573 1574 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1575 1576 /* 1577 * if timeout has been shortened, assert NTT. 1578 */ 1579 1580 if ((lp->lp_partner.lip_state & LACP_STATE_TIMEOUT)) { 1581 lacp_sm_assert_ntt(lp); 1582 } 1583 } 1584 1585 static void 1586 lacp_sm_ptx_tx_schedule(struct lacp_port *lp) 1587 { 1588 int timeout; 1589 1590 if (!(lp->lp_state & LACP_STATE_ACTIVITY) && 1591 !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) { 1592 1593 /* 1594 * NO_PERIODIC 1595 */ 1596 1597 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1598 return; 1599 } 1600 1601 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_PERIODIC)) { 1602 return; 1603 } 1604 1605 timeout = (lp->lp_partner.lip_state & LACP_STATE_TIMEOUT) ? 1606 LACP_FAST_PERIODIC_TIME : LACP_SLOW_PERIODIC_TIME; 1607 1608 LACP_TIMER_ARM(lp, LACP_TIMER_PERIODIC, timeout); 1609 } 1610 1611 static void 1612 lacp_sm_ptx_timer(struct lacp_port *lp) 1613 { 1614 lacp_sm_assert_ntt(lp); 1615 } 1616 1617 static void 1618 lacp_sm_rx(struct lacp_port *lp, const struct lacpdu *du) 1619 { 1620 int timeout; 1621 1622 /* 1623 * check LACP_DISABLED first 1624 */ 1625 1626 if (!(lp->lp_state & LACP_STATE_AGGREGATION)) { 1627 return; 1628 } 1629 1630 /* 1631 * check loopback condition. 1632 */ 1633 1634 if (!lacp_compare_systemid(&du->ldu_actor.lip_systemid, 1635 &lp->lp_actor.lip_systemid)) { 1636 return; 1637 } 1638 1639 /* 1640 * EXPIRED, DEFAULTED, CURRENT -> CURRENT 1641 */ 1642 1643 lacp_sm_rx_update_selected(lp, du); 1644 lacp_sm_rx_update_ntt(lp, du); 1645 lacp_sm_rx_record_pdu(lp, du); 1646 1647 timeout = (lp->lp_state & LACP_STATE_TIMEOUT) ? 1648 LACP_SHORT_TIMEOUT_TIME : LACP_LONG_TIMEOUT_TIME; 1649 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, timeout); 1650 1651 lp->lp_state &= ~LACP_STATE_EXPIRED; 1652 1653 /* 1654 * kick transmit machine without waiting the next tick. 1655 */ 1656 1657 lacp_sm_tx(lp); 1658 } 1659 1660 static void 1661 lacp_sm_rx_set_expired(struct lacp_port *lp) 1662 { 1663 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1664 lp->lp_partner.lip_state |= LACP_STATE_TIMEOUT; 1665 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, LACP_SHORT_TIMEOUT_TIME); 1666 lp->lp_state |= LACP_STATE_EXPIRED; 1667 } 1668 1669 static void 1670 lacp_sm_rx_timer(struct lacp_port *lp) 1671 { 1672 if ((lp->lp_state & LACP_STATE_EXPIRED) == 0) { 1673 /* CURRENT -> EXPIRED */ 1674 LACP_DPRINTF((lp, "%s: CURRENT -> EXPIRED\n", __func__)); 1675 lacp_sm_rx_set_expired(lp); 1676 } else { 1677 /* EXPIRED -> DEFAULTED */ 1678 LACP_DPRINTF((lp, "%s: EXPIRED -> DEFAULTED\n", __func__)); 1679 lacp_sm_rx_update_default_selected(lp); 1680 lacp_sm_rx_record_default(lp); 1681 lp->lp_state &= ~LACP_STATE_EXPIRED; 1682 } 1683 } 1684 1685 static void 1686 lacp_sm_rx_record_pdu(struct lacp_port *lp, const struct lacpdu *du) 1687 { 1688 boolean_t active; 1689 uint8_t oldpstate; 1690 char buf[LACP_STATESTR_MAX+1]; 1691 1692 LACP_TRACE(lp); 1693 1694 oldpstate = lp->lp_partner.lip_state; 1695 1696 active = (du->ldu_actor.lip_state & LACP_STATE_ACTIVITY) 1697 || ((lp->lp_state & LACP_STATE_ACTIVITY) && 1698 (du->ldu_partner.lip_state & LACP_STATE_ACTIVITY)); 1699 1700 lp->lp_partner = du->ldu_actor; 1701 if (active && 1702 ((LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1703 LACP_STATE_AGGREGATION) && 1704 !lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner)) 1705 || (du->ldu_partner.lip_state & LACP_STATE_AGGREGATION) == 0)) { 1706 /* XXX nothing? */ 1707 } else { 1708 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1709 } 1710 1711 lp->lp_state &= ~LACP_STATE_DEFAULTED; 1712 1713 if (oldpstate != lp->lp_partner.lip_state) { 1714 LACP_DPRINTF((lp, "old pstate %s\n", 1715 lacp_format_state(oldpstate, buf, sizeof(buf)))); 1716 LACP_DPRINTF((lp, "new pstate %s\n", 1717 lacp_format_state(lp->lp_partner.lip_state, buf, 1718 sizeof(buf)))); 1719 } 1720 1721 /* XXX Hack, still need to implement 5.4.9 para 2,3,4 */ 1722 if (lp->lp_lsc->lsc_strict_mode) 1723 lp->lp_partner.lip_state |= LACP_STATE_SYNC; 1724 1725 lacp_sm_ptx_update_timeout(lp, oldpstate); 1726 } 1727 1728 static void 1729 lacp_sm_rx_update_ntt(struct lacp_port *lp, const struct lacpdu *du) 1730 { 1731 1732 LACP_TRACE(lp); 1733 1734 if (lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner) || 1735 !LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1736 LACP_STATE_ACTIVITY | LACP_STATE_SYNC | LACP_STATE_AGGREGATION)) { 1737 LACP_DPRINTF((lp, "%s: assert ntt\n", __func__)); 1738 lacp_sm_assert_ntt(lp); 1739 } 1740 } 1741 1742 static void 1743 lacp_sm_rx_record_default(struct lacp_port *lp) 1744 { 1745 uint8_t oldpstate; 1746 1747 LACP_TRACE(lp); 1748 1749 oldpstate = lp->lp_partner.lip_state; 1750 if (lp->lp_lsc->lsc_strict_mode) 1751 lp->lp_partner = lacp_partner_admin_strict; 1752 else 1753 lp->lp_partner = lacp_partner_admin_optimistic;; 1754 lp->lp_state |= LACP_STATE_DEFAULTED; 1755 lacp_sm_ptx_update_timeout(lp, oldpstate); 1756 } 1757 1758 static void 1759 lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *lp, 1760 const struct lacp_peerinfo *info) 1761 { 1762 1763 LACP_TRACE(lp); 1764 1765 if (lacp_compare_peerinfo(&lp->lp_partner, info) || 1766 !LACP_STATE_EQ(lp->lp_partner.lip_state, info->lip_state, 1767 LACP_STATE_AGGREGATION)) { 1768 lp->lp_selected = LACP_UNSELECTED; 1769 /* mux machine will clean up lp->lp_aggregator */ 1770 } 1771 } 1772 1773 static void 1774 lacp_sm_rx_update_selected(struct lacp_port *lp, const struct lacpdu *du) 1775 { 1776 1777 LACP_TRACE(lp); 1778 1779 lacp_sm_rx_update_selected_from_peerinfo(lp, &du->ldu_actor); 1780 } 1781 1782 static void 1783 lacp_sm_rx_update_default_selected(struct lacp_port *lp) 1784 { 1785 1786 LACP_TRACE(lp); 1787 1788 if (lp->lp_lsc->lsc_strict_mode) 1789 lacp_sm_rx_update_selected_from_peerinfo(lp, 1790 &lacp_partner_admin_strict); 1791 else 1792 lacp_sm_rx_update_selected_from_peerinfo(lp, 1793 &lacp_partner_admin_optimistic); 1794 } 1795 1796 /* transmit machine */ 1797 1798 static void 1799 lacp_sm_tx(struct lacp_port *lp) 1800 { 1801 int error = 0; 1802 1803 if (!(lp->lp_state & LACP_STATE_AGGREGATION) 1804 #if 1 1805 || (!(lp->lp_state & LACP_STATE_ACTIVITY) 1806 && !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) 1807 #endif 1808 ) { 1809 lp->lp_flags &= ~LACP_PORT_NTT; 1810 } 1811 1812 if (!(lp->lp_flags & LACP_PORT_NTT)) { 1813 return; 1814 } 1815 1816 /* Rate limit to 3 PDUs per LACP_FAST_PERIODIC_TIME */ 1817 if (ppsratecheck(&lp->lp_last_lacpdu, &lp->lp_lacpdu_sent, 1818 (3 / LACP_FAST_PERIODIC_TIME)) == 0) { 1819 LACP_DPRINTF((lp, "rate limited pdu\n")); 1820 return; 1821 } 1822 1823 if (((1 << lp->lp_ifp->if_dunit) & lp->lp_lsc->lsc_debug.lsc_tx_test) == 0) { 1824 error = lacp_xmit_lacpdu(lp); 1825 } else { 1826 LACP_TPRINTF((lp, "Dropping TX PDU\n")); 1827 } 1828 1829 if (error == 0) { 1830 lp->lp_flags &= ~LACP_PORT_NTT; 1831 } else { 1832 LACP_DPRINTF((lp, "lacpdu transmit failure, error %d\n", 1833 error)); 1834 } 1835 } 1836 1837 static void 1838 lacp_sm_assert_ntt(struct lacp_port *lp) 1839 { 1840 1841 lp->lp_flags |= LACP_PORT_NTT; 1842 } 1843 1844 static void 1845 lacp_run_timers(struct lacp_port *lp) 1846 { 1847 int i; 1848 1849 for (i = 0; i < LACP_NTIMER; i++) { 1850 KASSERT(lp->lp_timer[i] >= 0, 1851 ("invalid timer value %d", lp->lp_timer[i])); 1852 if (lp->lp_timer[i] == 0) { 1853 continue; 1854 } else if (--lp->lp_timer[i] <= 0) { 1855 if (lacp_timer_funcs[i]) { 1856 (*lacp_timer_funcs[i])(lp); 1857 } 1858 } 1859 } 1860 } 1861 1862 int 1863 lacp_marker_input(struct lacp_port *lp, struct mbuf *m) 1864 { 1865 struct lacp_softc *lsc = lp->lp_lsc; 1866 struct lagg_port *lgp = lp->lp_lagg; 1867 struct lacp_port *lp2; 1868 struct markerdu *mdu; 1869 int error = 0; 1870 int pending = 0; 1871 1872 if (m->m_pkthdr.len != sizeof(*mdu)) { 1873 goto bad; 1874 } 1875 1876 if ((m->m_flags & M_MCAST) == 0) { 1877 goto bad; 1878 } 1879 1880 if (m->m_len < sizeof(*mdu)) { 1881 m = m_pullup(m, sizeof(*mdu)); 1882 if (m == NULL) { 1883 return (ENOMEM); 1884 } 1885 } 1886 1887 mdu = mtod(m, struct markerdu *); 1888 1889 if (memcmp(&mdu->mdu_eh.ether_dhost, 1890 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 1891 goto bad; 1892 } 1893 1894 if (mdu->mdu_sph.sph_version != 1) { 1895 goto bad; 1896 } 1897 1898 switch (mdu->mdu_tlv.tlv_type) { 1899 case MARKER_TYPE_INFO: 1900 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 1901 marker_info_tlv_template, TRUE)) { 1902 goto bad; 1903 } 1904 mdu->mdu_tlv.tlv_type = MARKER_TYPE_RESPONSE; 1905 memcpy(&mdu->mdu_eh.ether_dhost, 1906 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN); 1907 memcpy(&mdu->mdu_eh.ether_shost, 1908 lgp->lp_lladdr, ETHER_ADDR_LEN); 1909 error = lagg_enqueue(lp->lp_ifp, m); 1910 break; 1911 1912 case MARKER_TYPE_RESPONSE: 1913 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 1914 marker_response_tlv_template, TRUE)) { 1915 goto bad; 1916 } 1917 LACP_DPRINTF((lp, "marker response, port=%u, sys=%6D, id=%u\n", 1918 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, 1919 ":", ntohl(mdu->mdu_info.mi_rq_xid))); 1920 1921 /* Verify that it is the last marker we sent out */ 1922 if (memcmp(&mdu->mdu_info, &lp->lp_marker, 1923 sizeof(struct lacp_markerinfo))) 1924 goto bad; 1925 1926 LACP_LOCK(lsc); 1927 lp->lp_flags &= ~LACP_PORT_MARK; 1928 1929 if (lsc->lsc_suppress_distributing) { 1930 /* Check if any ports are waiting for a response */ 1931 LIST_FOREACH(lp2, &lsc->lsc_ports, lp_next) { 1932 if (lp2->lp_flags & LACP_PORT_MARK) { 1933 pending = 1; 1934 break; 1935 } 1936 } 1937 1938 if (pending == 0) { 1939 /* All interface queues are clear */ 1940 LACP_DPRINTF((NULL, "queue flush complete\n")); 1941 lsc->lsc_suppress_distributing = FALSE; 1942 } 1943 } 1944 LACP_UNLOCK(lsc); 1945 m_freem(m); 1946 break; 1947 1948 default: 1949 goto bad; 1950 } 1951 1952 return (error); 1953 1954 bad: 1955 LACP_DPRINTF((lp, "bad marker frame\n")); 1956 m_freem(m); 1957 return (EINVAL); 1958 } 1959 1960 static int 1961 tlv_check(const void *p, size_t size, const struct tlvhdr *tlv, 1962 const struct tlv_template *tmpl, boolean_t check_type) 1963 { 1964 while (/* CONSTCOND */ 1) { 1965 if ((const char *)tlv - (const char *)p + sizeof(*tlv) > size) { 1966 return (EINVAL); 1967 } 1968 if ((check_type && tlv->tlv_type != tmpl->tmpl_type) || 1969 tlv->tlv_length != tmpl->tmpl_length) { 1970 return (EINVAL); 1971 } 1972 if (tmpl->tmpl_type == 0) { 1973 break; 1974 } 1975 tlv = (const struct tlvhdr *) 1976 ((const char *)tlv + tlv->tlv_length); 1977 tmpl++; 1978 } 1979 1980 return (0); 1981 } 1982 1983 /* Debugging */ 1984 const char * 1985 lacp_format_mac(const uint8_t *mac, char *buf, size_t buflen) 1986 { 1987 snprintf(buf, buflen, "%02X-%02X-%02X-%02X-%02X-%02X", 1988 (int)mac[0], 1989 (int)mac[1], 1990 (int)mac[2], 1991 (int)mac[3], 1992 (int)mac[4], 1993 (int)mac[5]); 1994 1995 return (buf); 1996 } 1997 1998 const char * 1999 lacp_format_systemid(const struct lacp_systemid *sysid, 2000 char *buf, size_t buflen) 2001 { 2002 char macbuf[LACP_MACSTR_MAX+1]; 2003 2004 snprintf(buf, buflen, "%04X,%s", 2005 ntohs(sysid->lsi_prio), 2006 lacp_format_mac(sysid->lsi_mac, macbuf, sizeof(macbuf))); 2007 2008 return (buf); 2009 } 2010 2011 const char * 2012 lacp_format_portid(const struct lacp_portid *portid, char *buf, size_t buflen) 2013 { 2014 snprintf(buf, buflen, "%04X,%04X", 2015 ntohs(portid->lpi_prio), 2016 ntohs(portid->lpi_portno)); 2017 2018 return (buf); 2019 } 2020 2021 const char * 2022 lacp_format_partner(const struct lacp_peerinfo *peer, char *buf, size_t buflen) 2023 { 2024 char sysid[LACP_SYSTEMIDSTR_MAX+1]; 2025 char portid[LACP_PORTIDSTR_MAX+1]; 2026 2027 snprintf(buf, buflen, "(%s,%04X,%s)", 2028 lacp_format_systemid(&peer->lip_systemid, sysid, sizeof(sysid)), 2029 ntohs(peer->lip_key), 2030 lacp_format_portid(&peer->lip_portid, portid, sizeof(portid))); 2031 2032 return (buf); 2033 } 2034 2035 const char * 2036 lacp_format_lagid(const struct lacp_peerinfo *a, 2037 const struct lacp_peerinfo *b, char *buf, size_t buflen) 2038 { 2039 char astr[LACP_PARTNERSTR_MAX+1]; 2040 char bstr[LACP_PARTNERSTR_MAX+1]; 2041 2042 #if 0 2043 /* 2044 * there's a convention to display small numbered peer 2045 * in the left. 2046 */ 2047 2048 if (lacp_compare_peerinfo(a, b) > 0) { 2049 const struct lacp_peerinfo *t; 2050 2051 t = a; 2052 a = b; 2053 b = t; 2054 } 2055 #endif 2056 2057 snprintf(buf, buflen, "[%s,%s]", 2058 lacp_format_partner(a, astr, sizeof(astr)), 2059 lacp_format_partner(b, bstr, sizeof(bstr))); 2060 2061 return (buf); 2062 } 2063 2064 const char * 2065 lacp_format_lagid_aggregator(const struct lacp_aggregator *la, 2066 char *buf, size_t buflen) 2067 { 2068 if (la == NULL) { 2069 return ("(none)"); 2070 } 2071 2072 return (lacp_format_lagid(&la->la_actor, &la->la_partner, buf, buflen)); 2073 } 2074 2075 const char * 2076 lacp_format_state(uint8_t state, char *buf, size_t buflen) 2077 { 2078 snprintf(buf, buflen, "%b", state, LACP_STATE_BITS); 2079 return (buf); 2080 } 2081 2082 static void 2083 lacp_dump_lacpdu(const struct lacpdu *du) 2084 { 2085 char buf[LACP_PARTNERSTR_MAX+1]; 2086 char buf2[LACP_STATESTR_MAX+1]; 2087 2088 printf("actor=%s\n", 2089 lacp_format_partner(&du->ldu_actor, buf, sizeof(buf))); 2090 printf("actor.state=%s\n", 2091 lacp_format_state(du->ldu_actor.lip_state, buf2, sizeof(buf2))); 2092 printf("partner=%s\n", 2093 lacp_format_partner(&du->ldu_partner, buf, sizeof(buf))); 2094 printf("partner.state=%s\n", 2095 lacp_format_state(du->ldu_partner.lip_state, buf2, sizeof(buf2))); 2096 2097 printf("maxdelay=%d\n", ntohs(du->ldu_collector.lci_maxdelay)); 2098 } 2099 2100 static void 2101 lacp_dprintf(const struct lacp_port *lp, const char *fmt, ...) 2102 { 2103 va_list va; 2104 2105 if (lp) { 2106 printf("%s: ", lp->lp_ifp->if_xname); 2107 } 2108 2109 va_start(va, fmt); 2110 vprintf(fmt, va); 2111 va_end(va); 2112 }
Cache object: 41161394c6b41efd8b5fc6251fda052f
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