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("$FreeBSD$"); 32 33 #include <sys/param.h> 34 #include <sys/callout.h> 35 #include <sys/eventhandler.h> 36 #include <sys/mbuf.h> 37 #include <sys/systm.h> 38 #include <sys/malloc.h> 39 #include <sys/kernel.h> /* hz */ 40 #include <sys/socket.h> /* for net/if.h */ 41 #include <sys/sockio.h> 42 #include <sys/sysctl.h> 43 #include <machine/stdarg.h> 44 #include <sys/lock.h> 45 #include <sys/rwlock.h> 46 #include <sys/taskqueue.h> 47 48 #include <net/if.h> 49 #include <net/if_var.h> 50 #include <net/if_dl.h> 51 #include <net/ethernet.h> 52 #include <net/if_media.h> 53 #include <net/if_types.h> 54 55 #include <net/if_lagg.h> 56 #include <net/ieee8023ad_lacp.h> 57 58 /* 59 * actor system priority and port priority. 60 * XXX should be configurable. 61 */ 62 63 #define LACP_SYSTEM_PRIO 0x8000 64 #define LACP_PORT_PRIO 0x8000 65 66 const uint8_t ethermulticastaddr_slowprotocols[ETHER_ADDR_LEN] = 67 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x02 }; 68 69 static const struct tlv_template lacp_info_tlv_template[] = { 70 { LACP_TYPE_ACTORINFO, 71 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) }, 72 { LACP_TYPE_PARTNERINFO, 73 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) }, 74 { LACP_TYPE_COLLECTORINFO, 75 sizeof(struct tlvhdr) + sizeof(struct lacp_collectorinfo) }, 76 { 0, 0 }, 77 }; 78 79 static const struct tlv_template marker_info_tlv_template[] = { 80 { MARKER_TYPE_INFO, 81 sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) }, 82 { 0, 0 }, 83 }; 84 85 static const struct tlv_template marker_response_tlv_template[] = { 86 { MARKER_TYPE_RESPONSE, 87 sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) }, 88 { 0, 0 }, 89 }; 90 91 typedef void (*lacp_timer_func_t)(struct lacp_port *); 92 93 static void lacp_fill_actorinfo(struct lacp_port *, struct lacp_peerinfo *); 94 static void lacp_fill_markerinfo(struct lacp_port *, 95 struct lacp_markerinfo *); 96 97 static uint64_t lacp_aggregator_bandwidth(struct lacp_aggregator *); 98 static void lacp_suppress_distributing(struct lacp_softc *, 99 struct lacp_aggregator *); 100 static void lacp_transit_expire(void *); 101 static void lacp_update_portmap(struct lacp_softc *); 102 static void lacp_select_active_aggregator(struct lacp_softc *); 103 static uint16_t lacp_compose_key(struct lacp_port *); 104 static int tlv_check(const void *, size_t, const struct tlvhdr *, 105 const struct tlv_template *, boolean_t); 106 static void lacp_tick(void *); 107 108 static void lacp_fill_aggregator_id(struct lacp_aggregator *, 109 const struct lacp_port *); 110 static void lacp_fill_aggregator_id_peer(struct lacp_peerinfo *, 111 const struct lacp_peerinfo *); 112 static int lacp_aggregator_is_compatible(const struct lacp_aggregator *, 113 const struct lacp_port *); 114 static int lacp_peerinfo_is_compatible(const struct lacp_peerinfo *, 115 const struct lacp_peerinfo *); 116 117 static struct lacp_aggregator *lacp_aggregator_get(struct lacp_softc *, 118 struct lacp_port *); 119 static void lacp_aggregator_addref(struct lacp_softc *, 120 struct lacp_aggregator *); 121 static void lacp_aggregator_delref(struct lacp_softc *, 122 struct lacp_aggregator *); 123 124 /* receive machine */ 125 126 static int lacp_pdu_input(struct lacp_port *, struct mbuf *); 127 static int lacp_marker_input(struct lacp_port *, struct mbuf *); 128 static void lacp_sm_rx(struct lacp_port *, const struct lacpdu *); 129 static void lacp_sm_rx_timer(struct lacp_port *); 130 static void lacp_sm_rx_set_expired(struct lacp_port *); 131 static void lacp_sm_rx_update_ntt(struct lacp_port *, 132 const struct lacpdu *); 133 static void lacp_sm_rx_record_pdu(struct lacp_port *, 134 const struct lacpdu *); 135 static void lacp_sm_rx_update_selected(struct lacp_port *, 136 const struct lacpdu *); 137 static void lacp_sm_rx_record_default(struct lacp_port *); 138 static void lacp_sm_rx_update_default_selected(struct lacp_port *); 139 static void lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *, 140 const struct lacp_peerinfo *); 141 142 /* mux machine */ 143 144 static void lacp_sm_mux(struct lacp_port *); 145 static void lacp_set_mux(struct lacp_port *, enum lacp_mux_state); 146 static void lacp_sm_mux_timer(struct lacp_port *); 147 148 /* periodic transmit machine */ 149 150 static void lacp_sm_ptx_update_timeout(struct lacp_port *, uint8_t); 151 static void lacp_sm_ptx_tx_schedule(struct lacp_port *); 152 static void lacp_sm_ptx_timer(struct lacp_port *); 153 154 /* transmit machine */ 155 156 static void lacp_sm_tx(struct lacp_port *); 157 static void lacp_sm_assert_ntt(struct lacp_port *); 158 159 static void lacp_run_timers(struct lacp_port *); 160 static int lacp_compare_peerinfo(const struct lacp_peerinfo *, 161 const struct lacp_peerinfo *); 162 static int lacp_compare_systemid(const struct lacp_systemid *, 163 const struct lacp_systemid *); 164 static void lacp_port_enable(struct lacp_port *); 165 static void lacp_port_disable(struct lacp_port *); 166 static void lacp_select(struct lacp_port *); 167 static void lacp_unselect(struct lacp_port *); 168 static void lacp_disable_collecting(struct lacp_port *); 169 static void lacp_enable_collecting(struct lacp_port *); 170 static void lacp_disable_distributing(struct lacp_port *); 171 static void lacp_enable_distributing(struct lacp_port *); 172 static int lacp_xmit_lacpdu(struct lacp_port *); 173 static int lacp_xmit_marker(struct lacp_port *); 174 175 /* Debugging */ 176 177 static void lacp_dump_lacpdu(const struct lacpdu *); 178 static const char *lacp_format_partner(const struct lacp_peerinfo *, char *, 179 size_t); 180 static const char *lacp_format_lagid(const struct lacp_peerinfo *, 181 const struct lacp_peerinfo *, char *, size_t); 182 static const char *lacp_format_lagid_aggregator(const struct lacp_aggregator *, 183 char *, size_t); 184 static const char *lacp_format_state(uint8_t, char *, size_t); 185 static const char *lacp_format_mac(const uint8_t *, char *, size_t); 186 static const char *lacp_format_systemid(const struct lacp_systemid *, char *, 187 size_t); 188 static const char *lacp_format_portid(const struct lacp_portid *, char *, 189 size_t); 190 static void lacp_dprintf(const struct lacp_port *, const char *, ...) 191 __attribute__((__format__(__printf__, 2, 3))); 192 193 static VNET_DEFINE(int, lacp_debug); 194 #define V_lacp_debug VNET(lacp_debug) 195 SYSCTL_NODE(_net_link_lagg, OID_AUTO, lacp, CTLFLAG_RD, 0, "ieee802.3ad"); 196 SYSCTL_INT(_net_link_lagg_lacp, OID_AUTO, debug, CTLFLAG_RWTUN | CTLFLAG_VNET, 197 &VNET_NAME(lacp_debug), 0, "Enable LACP debug logging (1=debug, 2=trace)"); 198 199 #define LACP_DPRINTF(a) if (V_lacp_debug & 0x01) { lacp_dprintf a ; } 200 #define LACP_TRACE(a) if (V_lacp_debug & 0x02) { lacp_dprintf(a,"%s\n",__func__); } 201 #define LACP_TPRINTF(a) if (V_lacp_debug & 0x04) { lacp_dprintf a ; } 202 203 /* 204 * partner administration variables. 205 * XXX should be configurable. 206 */ 207 208 static const struct lacp_peerinfo lacp_partner_admin_optimistic = { 209 .lip_systemid = { .lsi_prio = 0xffff }, 210 .lip_portid = { .lpi_prio = 0xffff }, 211 .lip_state = LACP_STATE_SYNC | LACP_STATE_AGGREGATION | 212 LACP_STATE_COLLECTING | LACP_STATE_DISTRIBUTING, 213 }; 214 215 static const struct lacp_peerinfo lacp_partner_admin_strict = { 216 .lip_systemid = { .lsi_prio = 0xffff }, 217 .lip_portid = { .lpi_prio = 0xffff }, 218 .lip_state = 0, 219 }; 220 221 static const lacp_timer_func_t lacp_timer_funcs[LACP_NTIMER] = { 222 [LACP_TIMER_CURRENT_WHILE] = lacp_sm_rx_timer, 223 [LACP_TIMER_PERIODIC] = lacp_sm_ptx_timer, 224 [LACP_TIMER_WAIT_WHILE] = lacp_sm_mux_timer, 225 }; 226 227 struct mbuf * 228 lacp_input(struct lagg_port *lgp, struct mbuf *m) 229 { 230 struct lacp_port *lp = LACP_PORT(lgp); 231 uint8_t subtype; 232 233 if (m->m_pkthdr.len < sizeof(struct ether_header) + sizeof(subtype)) { 234 m_freem(m); 235 return (NULL); 236 } 237 238 m_copydata(m, sizeof(struct ether_header), sizeof(subtype), &subtype); 239 switch (subtype) { 240 case SLOWPROTOCOLS_SUBTYPE_LACP: 241 lacp_pdu_input(lp, m); 242 return (NULL); 243 244 case SLOWPROTOCOLS_SUBTYPE_MARKER: 245 lacp_marker_input(lp, m); 246 return (NULL); 247 } 248 249 /* Not a subtype we are interested in */ 250 return (m); 251 } 252 253 /* 254 * lacp_pdu_input: process lacpdu 255 */ 256 static int 257 lacp_pdu_input(struct lacp_port *lp, struct mbuf *m) 258 { 259 struct lacp_softc *lsc = lp->lp_lsc; 260 struct lacpdu *du; 261 int error = 0; 262 263 if (m->m_pkthdr.len != sizeof(*du)) { 264 goto bad; 265 } 266 267 if ((m->m_flags & M_MCAST) == 0) { 268 goto bad; 269 } 270 271 if (m->m_len < sizeof(*du)) { 272 m = m_pullup(m, sizeof(*du)); 273 if (m == NULL) { 274 return (ENOMEM); 275 } 276 } 277 278 du = mtod(m, struct lacpdu *); 279 280 if (memcmp(&du->ldu_eh.ether_dhost, 281 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 282 goto bad; 283 } 284 285 /* 286 * ignore the version for compatibility with 287 * the future protocol revisions. 288 */ 289 #if 0 290 if (du->ldu_sph.sph_version != 1) { 291 goto bad; 292 } 293 #endif 294 295 /* 296 * ignore tlv types for compatibility with 297 * the future protocol revisions. 298 */ 299 if (tlv_check(du, sizeof(*du), &du->ldu_tlv_actor, 300 lacp_info_tlv_template, FALSE)) { 301 goto bad; 302 } 303 304 if (V_lacp_debug > 0) { 305 lacp_dprintf(lp, "lacpdu receive\n"); 306 lacp_dump_lacpdu(du); 307 } 308 309 if ((1 << lp->lp_ifp->if_dunit) & lp->lp_lsc->lsc_debug.lsc_rx_test) { 310 LACP_TPRINTF((lp, "Dropping RX PDU\n")); 311 goto bad; 312 } 313 314 LACP_LOCK(lsc); 315 lacp_sm_rx(lp, du); 316 LACP_UNLOCK(lsc); 317 318 m_freem(m); 319 return (error); 320 321 bad: 322 m_freem(m); 323 return (EINVAL); 324 } 325 326 static void 327 lacp_fill_actorinfo(struct lacp_port *lp, struct lacp_peerinfo *info) 328 { 329 struct lagg_port *lgp = lp->lp_lagg; 330 struct lagg_softc *sc = lgp->lp_softc; 331 332 info->lip_systemid.lsi_prio = htons(LACP_SYSTEM_PRIO); 333 memcpy(&info->lip_systemid.lsi_mac, 334 IF_LLADDR(sc->sc_ifp), ETHER_ADDR_LEN); 335 info->lip_portid.lpi_prio = htons(LACP_PORT_PRIO); 336 info->lip_portid.lpi_portno = htons(lp->lp_ifp->if_index); 337 info->lip_state = lp->lp_state; 338 } 339 340 static void 341 lacp_fill_markerinfo(struct lacp_port *lp, struct lacp_markerinfo *info) 342 { 343 struct ifnet *ifp = lp->lp_ifp; 344 345 /* Fill in the port index and system id (encoded as the MAC) */ 346 info->mi_rq_port = htons(ifp->if_index); 347 memcpy(&info->mi_rq_system, lp->lp_systemid.lsi_mac, ETHER_ADDR_LEN); 348 info->mi_rq_xid = htonl(0); 349 } 350 351 static int 352 lacp_xmit_lacpdu(struct lacp_port *lp) 353 { 354 struct lagg_port *lgp = lp->lp_lagg; 355 struct mbuf *m; 356 struct lacpdu *du; 357 int error; 358 359 LACP_LOCK_ASSERT(lp->lp_lsc); 360 361 m = m_gethdr(M_NOWAIT, MT_DATA); 362 if (m == NULL) { 363 return (ENOMEM); 364 } 365 m->m_len = m->m_pkthdr.len = sizeof(*du); 366 367 du = mtod(m, struct lacpdu *); 368 memset(du, 0, sizeof(*du)); 369 370 memcpy(&du->ldu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 371 ETHER_ADDR_LEN); 372 memcpy(&du->ldu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN); 373 du->ldu_eh.ether_type = htons(ETHERTYPE_SLOW); 374 375 du->ldu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_LACP; 376 du->ldu_sph.sph_version = 1; 377 378 TLV_SET(&du->ldu_tlv_actor, LACP_TYPE_ACTORINFO, sizeof(du->ldu_actor)); 379 du->ldu_actor = lp->lp_actor; 380 381 TLV_SET(&du->ldu_tlv_partner, LACP_TYPE_PARTNERINFO, 382 sizeof(du->ldu_partner)); 383 du->ldu_partner = lp->lp_partner; 384 385 TLV_SET(&du->ldu_tlv_collector, LACP_TYPE_COLLECTORINFO, 386 sizeof(du->ldu_collector)); 387 du->ldu_collector.lci_maxdelay = 0; 388 389 if (V_lacp_debug > 0) { 390 lacp_dprintf(lp, "lacpdu transmit\n"); 391 lacp_dump_lacpdu(du); 392 } 393 394 m->m_flags |= M_MCAST; 395 396 /* 397 * XXX should use higher priority queue. 398 * otherwise network congestion can break aggregation. 399 */ 400 401 error = lagg_enqueue(lp->lp_ifp, m); 402 return (error); 403 } 404 405 static int 406 lacp_xmit_marker(struct lacp_port *lp) 407 { 408 struct lagg_port *lgp = lp->lp_lagg; 409 struct mbuf *m; 410 struct markerdu *mdu; 411 int error; 412 413 LACP_LOCK_ASSERT(lp->lp_lsc); 414 415 m = m_gethdr(M_NOWAIT, MT_DATA); 416 if (m == NULL) { 417 return (ENOMEM); 418 } 419 m->m_len = m->m_pkthdr.len = sizeof(*mdu); 420 421 mdu = mtod(m, struct markerdu *); 422 memset(mdu, 0, sizeof(*mdu)); 423 424 memcpy(&mdu->mdu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 425 ETHER_ADDR_LEN); 426 memcpy(&mdu->mdu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN); 427 mdu->mdu_eh.ether_type = htons(ETHERTYPE_SLOW); 428 429 mdu->mdu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_MARKER; 430 mdu->mdu_sph.sph_version = 1; 431 432 /* Bump the transaction id and copy over the marker info */ 433 lp->lp_marker.mi_rq_xid = htonl(ntohl(lp->lp_marker.mi_rq_xid) + 1); 434 TLV_SET(&mdu->mdu_tlv, MARKER_TYPE_INFO, sizeof(mdu->mdu_info)); 435 mdu->mdu_info = lp->lp_marker; 436 437 LACP_DPRINTF((lp, "marker transmit, port=%u, sys=%6D, id=%u\n", 438 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, ":", 439 ntohl(mdu->mdu_info.mi_rq_xid))); 440 441 m->m_flags |= M_MCAST; 442 error = lagg_enqueue(lp->lp_ifp, m); 443 return (error); 444 } 445 446 void 447 lacp_linkstate(struct lagg_port *lgp) 448 { 449 struct lacp_port *lp = LACP_PORT(lgp); 450 struct lacp_softc *lsc = lp->lp_lsc; 451 struct ifnet *ifp = lgp->lp_ifp; 452 struct ifmediareq ifmr; 453 int error = 0; 454 u_int media; 455 uint8_t old_state; 456 uint16_t old_key; 457 458 bzero((char *)&ifmr, sizeof(ifmr)); 459 error = (*ifp->if_ioctl)(ifp, SIOCGIFMEDIA, (caddr_t)&ifmr); 460 if (error != 0) 461 return; 462 463 LACP_LOCK(lsc); 464 media = ifmr.ifm_active; 465 LACP_DPRINTF((lp, "media changed 0x%x -> 0x%x, ether = %d, fdx = %d, " 466 "link = %d\n", lp->lp_media, media, IFM_TYPE(media) == IFM_ETHER, 467 (media & IFM_FDX) != 0, ifp->if_link_state == LINK_STATE_UP)); 468 old_state = lp->lp_state; 469 old_key = lp->lp_key; 470 471 lp->lp_media = media; 472 /* 473 * If the port is not an active full duplex Ethernet link then it can 474 * not be aggregated. 475 */ 476 if (IFM_TYPE(media) != IFM_ETHER || (media & IFM_FDX) == 0 || 477 ifp->if_link_state != LINK_STATE_UP) { 478 lacp_port_disable(lp); 479 } else { 480 lacp_port_enable(lp); 481 } 482 lp->lp_key = lacp_compose_key(lp); 483 484 if (old_state != lp->lp_state || old_key != lp->lp_key) { 485 LACP_DPRINTF((lp, "-> UNSELECTED\n")); 486 lp->lp_selected = LACP_UNSELECTED; 487 } 488 LACP_UNLOCK(lsc); 489 } 490 491 static void 492 lacp_tick(void *arg) 493 { 494 struct lacp_softc *lsc = arg; 495 struct lacp_port *lp; 496 497 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { 498 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) 499 continue; 500 501 CURVNET_SET(lp->lp_ifp->if_vnet); 502 lacp_run_timers(lp); 503 504 lacp_select(lp); 505 lacp_sm_mux(lp); 506 lacp_sm_tx(lp); 507 lacp_sm_ptx_tx_schedule(lp); 508 CURVNET_RESTORE(); 509 } 510 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc); 511 } 512 513 int 514 lacp_port_create(struct lagg_port *lgp) 515 { 516 struct lagg_softc *sc = lgp->lp_softc; 517 struct lacp_softc *lsc = LACP_SOFTC(sc); 518 struct lacp_port *lp; 519 struct ifnet *ifp = lgp->lp_ifp; 520 struct sockaddr_dl sdl; 521 struct ifmultiaddr *rifma = NULL; 522 int error; 523 524 boolean_t active = TRUE; /* XXX should be configurable */ 525 boolean_t fast = FALSE; /* XXX should be configurable */ 526 527 link_init_sdl(ifp, (struct sockaddr *)&sdl, IFT_ETHER); 528 sdl.sdl_alen = ETHER_ADDR_LEN; 529 530 bcopy(ðermulticastaddr_slowprotocols, 531 LLADDR(&sdl), ETHER_ADDR_LEN); 532 error = if_addmulti(ifp, (struct sockaddr *)&sdl, &rifma); 533 if (error) { 534 printf("%s: ADDMULTI failed on %s\n", __func__, 535 lgp->lp_ifp->if_xname); 536 return (error); 537 } 538 539 lp = malloc(sizeof(struct lacp_port), 540 M_DEVBUF, M_NOWAIT|M_ZERO); 541 if (lp == NULL) 542 return (ENOMEM); 543 544 LACP_LOCK(lsc); 545 lgp->lp_psc = lp; 546 lp->lp_ifp = ifp; 547 lp->lp_lagg = lgp; 548 lp->lp_lsc = lsc; 549 lp->lp_ifma = rifma; 550 551 LIST_INSERT_HEAD(&lsc->lsc_ports, lp, lp_next); 552 553 lacp_fill_actorinfo(lp, &lp->lp_actor); 554 lacp_fill_markerinfo(lp, &lp->lp_marker); 555 lp->lp_state = 556 (active ? LACP_STATE_ACTIVITY : 0) | 557 (fast ? LACP_STATE_TIMEOUT : 0); 558 lp->lp_aggregator = NULL; 559 lacp_sm_rx_set_expired(lp); 560 LACP_UNLOCK(lsc); 561 lacp_linkstate(lgp); 562 563 return (0); 564 } 565 566 void 567 lacp_port_destroy(struct lagg_port *lgp) 568 { 569 struct lacp_port *lp = LACP_PORT(lgp); 570 struct lacp_softc *lsc = lp->lp_lsc; 571 int i; 572 573 LACP_LOCK(lsc); 574 for (i = 0; i < LACP_NTIMER; i++) { 575 LACP_TIMER_DISARM(lp, i); 576 } 577 578 lacp_disable_collecting(lp); 579 lacp_disable_distributing(lp); 580 lacp_unselect(lp); 581 582 LIST_REMOVE(lp, lp_next); 583 LACP_UNLOCK(lsc); 584 585 /* The address may have already been removed by if_purgemaddrs() */ 586 if (!lgp->lp_detaching) 587 if_delmulti_ifma(lp->lp_ifma); 588 589 free(lp, M_DEVBUF); 590 } 591 592 void 593 lacp_req(struct lagg_softc *sc, void *data) 594 { 595 struct lacp_opreq *req = (struct lacp_opreq *)data; 596 struct lacp_softc *lsc = LACP_SOFTC(sc); 597 struct lacp_aggregator *la; 598 599 bzero(req, sizeof(struct lacp_opreq)); 600 601 /* 602 * If the LACP softc is NULL, return with the opreq structure full of 603 * zeros. It is normal for the softc to be NULL while the lagg is 604 * being destroyed. 605 */ 606 if (NULL == lsc) 607 return; 608 609 la = lsc->lsc_active_aggregator; 610 LACP_LOCK(lsc); 611 if (la != NULL) { 612 req->actor_prio = ntohs(la->la_actor.lip_systemid.lsi_prio); 613 memcpy(&req->actor_mac, &la->la_actor.lip_systemid.lsi_mac, 614 ETHER_ADDR_LEN); 615 req->actor_key = ntohs(la->la_actor.lip_key); 616 req->actor_portprio = ntohs(la->la_actor.lip_portid.lpi_prio); 617 req->actor_portno = ntohs(la->la_actor.lip_portid.lpi_portno); 618 req->actor_state = la->la_actor.lip_state; 619 620 req->partner_prio = ntohs(la->la_partner.lip_systemid.lsi_prio); 621 memcpy(&req->partner_mac, &la->la_partner.lip_systemid.lsi_mac, 622 ETHER_ADDR_LEN); 623 req->partner_key = ntohs(la->la_partner.lip_key); 624 req->partner_portprio = ntohs(la->la_partner.lip_portid.lpi_prio); 625 req->partner_portno = ntohs(la->la_partner.lip_portid.lpi_portno); 626 req->partner_state = la->la_partner.lip_state; 627 } 628 LACP_UNLOCK(lsc); 629 } 630 631 void 632 lacp_portreq(struct lagg_port *lgp, void *data) 633 { 634 struct lacp_opreq *req = (struct lacp_opreq *)data; 635 struct lacp_port *lp = LACP_PORT(lgp); 636 struct lacp_softc *lsc = lp->lp_lsc; 637 638 LACP_LOCK(lsc); 639 req->actor_prio = ntohs(lp->lp_actor.lip_systemid.lsi_prio); 640 memcpy(&req->actor_mac, &lp->lp_actor.lip_systemid.lsi_mac, 641 ETHER_ADDR_LEN); 642 req->actor_key = ntohs(lp->lp_actor.lip_key); 643 req->actor_portprio = ntohs(lp->lp_actor.lip_portid.lpi_prio); 644 req->actor_portno = ntohs(lp->lp_actor.lip_portid.lpi_portno); 645 req->actor_state = lp->lp_actor.lip_state; 646 647 req->partner_prio = ntohs(lp->lp_partner.lip_systemid.lsi_prio); 648 memcpy(&req->partner_mac, &lp->lp_partner.lip_systemid.lsi_mac, 649 ETHER_ADDR_LEN); 650 req->partner_key = ntohs(lp->lp_partner.lip_key); 651 req->partner_portprio = ntohs(lp->lp_partner.lip_portid.lpi_prio); 652 req->partner_portno = ntohs(lp->lp_partner.lip_portid.lpi_portno); 653 req->partner_state = lp->lp_partner.lip_state; 654 LACP_UNLOCK(lsc); 655 } 656 657 static void 658 lacp_disable_collecting(struct lacp_port *lp) 659 { 660 LACP_DPRINTF((lp, "collecting disabled\n")); 661 lp->lp_state &= ~LACP_STATE_COLLECTING; 662 } 663 664 static void 665 lacp_enable_collecting(struct lacp_port *lp) 666 { 667 LACP_DPRINTF((lp, "collecting enabled\n")); 668 lp->lp_state |= LACP_STATE_COLLECTING; 669 } 670 671 static void 672 lacp_disable_distributing(struct lacp_port *lp) 673 { 674 struct lacp_aggregator *la = lp->lp_aggregator; 675 struct lacp_softc *lsc = lp->lp_lsc; 676 struct lagg_softc *sc = lsc->lsc_softc; 677 char buf[LACP_LAGIDSTR_MAX+1]; 678 679 LACP_LOCK_ASSERT(lsc); 680 681 if (la == NULL || (lp->lp_state & LACP_STATE_DISTRIBUTING) == 0) { 682 return; 683 } 684 685 KASSERT(!TAILQ_EMPTY(&la->la_ports), ("no aggregator ports")); 686 KASSERT(la->la_nports > 0, ("nports invalid (%d)", la->la_nports)); 687 KASSERT(la->la_refcnt >= la->la_nports, ("aggregator refcnt invalid")); 688 689 LACP_DPRINTF((lp, "disable distributing on aggregator %s, " 690 "nports %d -> %d\n", 691 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 692 la->la_nports, la->la_nports - 1)); 693 694 TAILQ_REMOVE(&la->la_ports, lp, lp_dist_q); 695 la->la_nports--; 696 sc->sc_active = la->la_nports; 697 698 if (lsc->lsc_active_aggregator == la) { 699 lacp_suppress_distributing(lsc, la); 700 lacp_select_active_aggregator(lsc); 701 /* regenerate the port map, the active aggregator has changed */ 702 lacp_update_portmap(lsc); 703 } 704 705 lp->lp_state &= ~LACP_STATE_DISTRIBUTING; 706 } 707 708 static void 709 lacp_enable_distributing(struct lacp_port *lp) 710 { 711 struct lacp_aggregator *la = lp->lp_aggregator; 712 struct lacp_softc *lsc = lp->lp_lsc; 713 struct lagg_softc *sc = lsc->lsc_softc; 714 char buf[LACP_LAGIDSTR_MAX+1]; 715 716 LACP_LOCK_ASSERT(lsc); 717 718 if ((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0) { 719 return; 720 } 721 722 LACP_DPRINTF((lp, "enable distributing on aggregator %s, " 723 "nports %d -> %d\n", 724 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 725 la->la_nports, la->la_nports + 1)); 726 727 KASSERT(la->la_refcnt > la->la_nports, ("aggregator refcnt invalid")); 728 TAILQ_INSERT_HEAD(&la->la_ports, lp, lp_dist_q); 729 la->la_nports++; 730 sc->sc_active = la->la_nports; 731 732 lp->lp_state |= LACP_STATE_DISTRIBUTING; 733 734 if (lsc->lsc_active_aggregator == la) { 735 lacp_suppress_distributing(lsc, la); 736 lacp_update_portmap(lsc); 737 } else 738 /* try to become the active aggregator */ 739 lacp_select_active_aggregator(lsc); 740 } 741 742 static void 743 lacp_transit_expire(void *vp) 744 { 745 struct lacp_softc *lsc = vp; 746 747 LACP_LOCK_ASSERT(lsc); 748 749 CURVNET_SET(lsc->lsc_softc->sc_ifp->if_vnet); 750 LACP_TRACE(NULL); 751 CURVNET_RESTORE(); 752 753 lsc->lsc_suppress_distributing = FALSE; 754 } 755 756 void 757 lacp_attach(struct lagg_softc *sc) 758 { 759 struct lacp_softc *lsc; 760 761 lsc = malloc(sizeof(struct lacp_softc), M_DEVBUF, M_WAITOK | M_ZERO); 762 763 sc->sc_psc = lsc; 764 lsc->lsc_softc = sc; 765 766 lsc->lsc_hashkey = arc4random(); 767 lsc->lsc_active_aggregator = NULL; 768 lsc->lsc_strict_mode = 1; 769 LACP_LOCK_INIT(lsc); 770 TAILQ_INIT(&lsc->lsc_aggregators); 771 LIST_INIT(&lsc->lsc_ports); 772 773 callout_init_mtx(&lsc->lsc_transit_callout, &lsc->lsc_mtx, 0); 774 callout_init_mtx(&lsc->lsc_callout, &lsc->lsc_mtx, 0); 775 776 /* if the lagg is already up then do the same */ 777 if (sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING) 778 lacp_init(sc); 779 } 780 781 void 782 lacp_detach(void *psc) 783 { 784 struct lacp_softc *lsc = (struct lacp_softc *)psc; 785 786 KASSERT(TAILQ_EMPTY(&lsc->lsc_aggregators), 787 ("aggregators still active")); 788 KASSERT(lsc->lsc_active_aggregator == NULL, 789 ("aggregator still attached")); 790 791 callout_drain(&lsc->lsc_transit_callout); 792 callout_drain(&lsc->lsc_callout); 793 794 LACP_LOCK_DESTROY(lsc); 795 free(lsc, M_DEVBUF); 796 } 797 798 void 799 lacp_init(struct lagg_softc *sc) 800 { 801 struct lacp_softc *lsc = LACP_SOFTC(sc); 802 803 LACP_LOCK(lsc); 804 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc); 805 LACP_UNLOCK(lsc); 806 } 807 808 void 809 lacp_stop(struct lagg_softc *sc) 810 { 811 struct lacp_softc *lsc = LACP_SOFTC(sc); 812 813 LACP_LOCK(lsc); 814 callout_stop(&lsc->lsc_transit_callout); 815 callout_stop(&lsc->lsc_callout); 816 LACP_UNLOCK(lsc); 817 } 818 819 struct lagg_port * 820 lacp_select_tx_port(struct lagg_softc *sc, struct mbuf *m) 821 { 822 struct lacp_softc *lsc = LACP_SOFTC(sc); 823 struct lacp_portmap *pm; 824 struct lacp_port *lp; 825 uint32_t hash; 826 827 if (__predict_false(lsc->lsc_suppress_distributing)) { 828 LACP_DPRINTF((NULL, "%s: waiting transit\n", __func__)); 829 return (NULL); 830 } 831 832 pm = &lsc->lsc_pmap[lsc->lsc_activemap]; 833 if (pm->pm_count == 0) { 834 LACP_DPRINTF((NULL, "%s: no active aggregator\n", __func__)); 835 return (NULL); 836 } 837 838 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) && (m->m_flags & M_FLOWID)) 839 hash = m->m_pkthdr.flowid >> sc->flowid_shift; 840 else 841 hash = lagg_hashmbuf(sc, m, lsc->lsc_hashkey); 842 hash %= pm->pm_count; 843 lp = pm->pm_map[hash]; 844 845 KASSERT((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0, 846 ("aggregated port is not distributing")); 847 848 return (lp->lp_lagg); 849 } 850 /* 851 * lacp_suppress_distributing: drop transmit packets for a while 852 * to preserve packet ordering. 853 */ 854 855 static void 856 lacp_suppress_distributing(struct lacp_softc *lsc, struct lacp_aggregator *la) 857 { 858 struct lacp_port *lp; 859 860 if (lsc->lsc_active_aggregator != la) { 861 return; 862 } 863 864 LACP_TRACE(NULL); 865 866 lsc->lsc_suppress_distributing = TRUE; 867 868 /* send a marker frame down each port to verify the queues are empty */ 869 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { 870 lp->lp_flags |= LACP_PORT_MARK; 871 lacp_xmit_marker(lp); 872 } 873 874 /* set a timeout for the marker frames */ 875 callout_reset(&lsc->lsc_transit_callout, 876 LACP_TRANSIT_DELAY * hz / 1000, lacp_transit_expire, lsc); 877 } 878 879 static int 880 lacp_compare_peerinfo(const struct lacp_peerinfo *a, 881 const struct lacp_peerinfo *b) 882 { 883 return (memcmp(a, b, offsetof(struct lacp_peerinfo, lip_state))); 884 } 885 886 static int 887 lacp_compare_systemid(const struct lacp_systemid *a, 888 const struct lacp_systemid *b) 889 { 890 return (memcmp(a, b, sizeof(*a))); 891 } 892 893 #if 0 /* unused */ 894 static int 895 lacp_compare_portid(const struct lacp_portid *a, 896 const struct lacp_portid *b) 897 { 898 return (memcmp(a, b, sizeof(*a))); 899 } 900 #endif 901 902 static uint64_t 903 lacp_aggregator_bandwidth(struct lacp_aggregator *la) 904 { 905 struct lacp_port *lp; 906 uint64_t speed; 907 908 lp = TAILQ_FIRST(&la->la_ports); 909 if (lp == NULL) { 910 return (0); 911 } 912 913 speed = ifmedia_baudrate(lp->lp_media); 914 speed *= la->la_nports; 915 if (speed == 0) { 916 LACP_DPRINTF((lp, "speed 0? media=0x%x nports=%d\n", 917 lp->lp_media, la->la_nports)); 918 } 919 920 return (speed); 921 } 922 923 /* 924 * lacp_select_active_aggregator: select an aggregator to be used to transmit 925 * packets from lagg(4) interface. 926 */ 927 928 static void 929 lacp_select_active_aggregator(struct lacp_softc *lsc) 930 { 931 struct lacp_aggregator *la; 932 struct lacp_aggregator *best_la = NULL; 933 uint64_t best_speed = 0; 934 char buf[LACP_LAGIDSTR_MAX+1]; 935 936 LACP_TRACE(NULL); 937 938 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 939 uint64_t speed; 940 941 if (la->la_nports == 0) { 942 continue; 943 } 944 945 speed = lacp_aggregator_bandwidth(la); 946 LACP_DPRINTF((NULL, "%s, speed=%jd, nports=%d\n", 947 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 948 speed, la->la_nports)); 949 950 /* 951 * This aggregator is chosen if the partner has a better 952 * system priority or, the total aggregated speed is higher 953 * or, it is already the chosen aggregator 954 */ 955 if ((best_la != NULL && LACP_SYS_PRI(la->la_partner) < 956 LACP_SYS_PRI(best_la->la_partner)) || 957 speed > best_speed || 958 (speed == best_speed && 959 la == lsc->lsc_active_aggregator)) { 960 best_la = la; 961 best_speed = speed; 962 } 963 } 964 965 KASSERT(best_la == NULL || best_la->la_nports > 0, 966 ("invalid aggregator refcnt")); 967 KASSERT(best_la == NULL || !TAILQ_EMPTY(&best_la->la_ports), 968 ("invalid aggregator list")); 969 970 if (lsc->lsc_active_aggregator != best_la) { 971 LACP_DPRINTF((NULL, "active aggregator changed\n")); 972 LACP_DPRINTF((NULL, "old %s\n", 973 lacp_format_lagid_aggregator(lsc->lsc_active_aggregator, 974 buf, sizeof(buf)))); 975 } else { 976 LACP_DPRINTF((NULL, "active aggregator not changed\n")); 977 } 978 LACP_DPRINTF((NULL, "new %s\n", 979 lacp_format_lagid_aggregator(best_la, buf, sizeof(buf)))); 980 981 if (lsc->lsc_active_aggregator != best_la) { 982 lsc->lsc_active_aggregator = best_la; 983 lacp_update_portmap(lsc); 984 if (best_la) { 985 lacp_suppress_distributing(lsc, best_la); 986 } 987 } 988 } 989 990 /* 991 * Updated the inactive portmap array with the new list of ports and 992 * make it live. 993 */ 994 static void 995 lacp_update_portmap(struct lacp_softc *lsc) 996 { 997 struct lagg_softc *sc = lsc->lsc_softc; 998 struct lacp_aggregator *la; 999 struct lacp_portmap *p; 1000 struct lacp_port *lp; 1001 uint64_t speed; 1002 u_int newmap; 1003 int i; 1004 1005 newmap = lsc->lsc_activemap == 0 ? 1 : 0; 1006 p = &lsc->lsc_pmap[newmap]; 1007 la = lsc->lsc_active_aggregator; 1008 speed = 0; 1009 bzero(p, sizeof(struct lacp_portmap)); 1010 1011 if (la != NULL && la->la_nports > 0) { 1012 p->pm_count = la->la_nports; 1013 i = 0; 1014 TAILQ_FOREACH(lp, &la->la_ports, lp_dist_q) 1015 p->pm_map[i++] = lp; 1016 KASSERT(i == p->pm_count, ("Invalid port count")); 1017 speed = lacp_aggregator_bandwidth(la); 1018 } 1019 sc->sc_ifp->if_baudrate = speed; 1020 1021 /* switch the active portmap over */ 1022 atomic_store_rel_int(&lsc->lsc_activemap, newmap); 1023 LACP_DPRINTF((NULL, "Set table %d with %d ports\n", 1024 lsc->lsc_activemap, 1025 lsc->lsc_pmap[lsc->lsc_activemap].pm_count)); 1026 } 1027 1028 static uint16_t 1029 lacp_compose_key(struct lacp_port *lp) 1030 { 1031 struct lagg_port *lgp = lp->lp_lagg; 1032 struct lagg_softc *sc = lgp->lp_softc; 1033 u_int media = lp->lp_media; 1034 uint16_t key; 1035 1036 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) { 1037 1038 /* 1039 * non-aggregatable links should have unique keys. 1040 * 1041 * XXX this isn't really unique as if_index is 16 bit. 1042 */ 1043 1044 /* bit 0..14: (some bits of) if_index of this port */ 1045 key = lp->lp_ifp->if_index; 1046 /* bit 15: 1 */ 1047 key |= 0x8000; 1048 } else { 1049 u_int subtype = IFM_SUBTYPE(media); 1050 1051 KASSERT(IFM_TYPE(media) == IFM_ETHER, ("invalid media type")); 1052 KASSERT((media & IFM_FDX) != 0, ("aggregating HDX interface")); 1053 1054 /* bit 0..4: IFM_SUBTYPE modulo speed */ 1055 switch (subtype) { 1056 case IFM_10_T: 1057 case IFM_10_2: 1058 case IFM_10_5: 1059 case IFM_10_STP: 1060 case IFM_10_FL: 1061 key = IFM_10_T; 1062 break; 1063 case IFM_100_TX: 1064 case IFM_100_FX: 1065 case IFM_100_T4: 1066 case IFM_100_VG: 1067 case IFM_100_T2: 1068 key = IFM_100_TX; 1069 break; 1070 case IFM_1000_SX: 1071 case IFM_1000_LX: 1072 case IFM_1000_CX: 1073 case IFM_1000_T: 1074 key = IFM_1000_SX; 1075 break; 1076 case IFM_10G_LR: 1077 case IFM_10G_SR: 1078 case IFM_10G_CX4: 1079 case IFM_10G_TWINAX: 1080 case IFM_10G_TWINAX_LONG: 1081 case IFM_10G_LRM: 1082 case IFM_10G_T: 1083 key = IFM_10G_LR; 1084 break; 1085 case IFM_40G_CR4: 1086 case IFM_40G_SR4: 1087 case IFM_40G_LR4: 1088 key = IFM_40G_CR4; 1089 break; 1090 default: 1091 key = subtype; 1092 } 1093 /* bit 5..14: (some bits of) if_index of lagg device */ 1094 key |= 0x7fe0 & ((sc->sc_ifp->if_index) << 5); 1095 /* bit 15: 0 */ 1096 } 1097 return (htons(key)); 1098 } 1099 1100 static void 1101 lacp_aggregator_addref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1102 { 1103 char buf[LACP_LAGIDSTR_MAX+1]; 1104 1105 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1106 __func__, 1107 lacp_format_lagid(&la->la_actor, &la->la_partner, 1108 buf, sizeof(buf)), 1109 la->la_refcnt, la->la_refcnt + 1)); 1110 1111 KASSERT(la->la_refcnt > 0, ("refcount <= 0")); 1112 la->la_refcnt++; 1113 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcount")); 1114 } 1115 1116 static void 1117 lacp_aggregator_delref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1118 { 1119 char buf[LACP_LAGIDSTR_MAX+1]; 1120 1121 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1122 __func__, 1123 lacp_format_lagid(&la->la_actor, &la->la_partner, 1124 buf, sizeof(buf)), 1125 la->la_refcnt, la->la_refcnt - 1)); 1126 1127 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcnt")); 1128 la->la_refcnt--; 1129 if (la->la_refcnt > 0) { 1130 return; 1131 } 1132 1133 KASSERT(la->la_refcnt == 0, ("refcount not zero")); 1134 KASSERT(lsc->lsc_active_aggregator != la, ("aggregator active")); 1135 1136 TAILQ_REMOVE(&lsc->lsc_aggregators, la, la_q); 1137 1138 free(la, M_DEVBUF); 1139 } 1140 1141 /* 1142 * lacp_aggregator_get: allocate an aggregator. 1143 */ 1144 1145 static struct lacp_aggregator * 1146 lacp_aggregator_get(struct lacp_softc *lsc, struct lacp_port *lp) 1147 { 1148 struct lacp_aggregator *la; 1149 1150 la = malloc(sizeof(*la), M_DEVBUF, M_NOWAIT); 1151 if (la) { 1152 la->la_refcnt = 1; 1153 la->la_nports = 0; 1154 TAILQ_INIT(&la->la_ports); 1155 la->la_pending = 0; 1156 TAILQ_INSERT_TAIL(&lsc->lsc_aggregators, la, la_q); 1157 } 1158 1159 return (la); 1160 } 1161 1162 /* 1163 * lacp_fill_aggregator_id: setup a newly allocated aggregator from a port. 1164 */ 1165 1166 static void 1167 lacp_fill_aggregator_id(struct lacp_aggregator *la, const struct lacp_port *lp) 1168 { 1169 lacp_fill_aggregator_id_peer(&la->la_partner, &lp->lp_partner); 1170 lacp_fill_aggregator_id_peer(&la->la_actor, &lp->lp_actor); 1171 1172 la->la_actor.lip_state = lp->lp_state & LACP_STATE_AGGREGATION; 1173 } 1174 1175 static void 1176 lacp_fill_aggregator_id_peer(struct lacp_peerinfo *lpi_aggr, 1177 const struct lacp_peerinfo *lpi_port) 1178 { 1179 memset(lpi_aggr, 0, sizeof(*lpi_aggr)); 1180 lpi_aggr->lip_systemid = lpi_port->lip_systemid; 1181 lpi_aggr->lip_key = lpi_port->lip_key; 1182 } 1183 1184 /* 1185 * lacp_aggregator_is_compatible: check if a port can join to an aggregator. 1186 */ 1187 1188 static int 1189 lacp_aggregator_is_compatible(const struct lacp_aggregator *la, 1190 const struct lacp_port *lp) 1191 { 1192 if (!(lp->lp_state & LACP_STATE_AGGREGATION) || 1193 !(lp->lp_partner.lip_state & LACP_STATE_AGGREGATION)) { 1194 return (0); 1195 } 1196 1197 if (!(la->la_actor.lip_state & LACP_STATE_AGGREGATION)) { 1198 return (0); 1199 } 1200 1201 if (!lacp_peerinfo_is_compatible(&la->la_partner, &lp->lp_partner)) { 1202 return (0); 1203 } 1204 1205 if (!lacp_peerinfo_is_compatible(&la->la_actor, &lp->lp_actor)) { 1206 return (0); 1207 } 1208 1209 return (1); 1210 } 1211 1212 static int 1213 lacp_peerinfo_is_compatible(const struct lacp_peerinfo *a, 1214 const struct lacp_peerinfo *b) 1215 { 1216 if (memcmp(&a->lip_systemid, &b->lip_systemid, 1217 sizeof(a->lip_systemid))) { 1218 return (0); 1219 } 1220 1221 if (memcmp(&a->lip_key, &b->lip_key, sizeof(a->lip_key))) { 1222 return (0); 1223 } 1224 1225 return (1); 1226 } 1227 1228 static void 1229 lacp_port_enable(struct lacp_port *lp) 1230 { 1231 lp->lp_state |= LACP_STATE_AGGREGATION; 1232 } 1233 1234 static void 1235 lacp_port_disable(struct lacp_port *lp) 1236 { 1237 lacp_set_mux(lp, LACP_MUX_DETACHED); 1238 1239 lp->lp_state &= ~LACP_STATE_AGGREGATION; 1240 lp->lp_selected = LACP_UNSELECTED; 1241 lacp_sm_rx_record_default(lp); 1242 lp->lp_partner.lip_state &= ~LACP_STATE_AGGREGATION; 1243 lp->lp_state &= ~LACP_STATE_EXPIRED; 1244 } 1245 1246 /* 1247 * lacp_select: select an aggregator. create one if necessary. 1248 */ 1249 static void 1250 lacp_select(struct lacp_port *lp) 1251 { 1252 struct lacp_softc *lsc = lp->lp_lsc; 1253 struct lacp_aggregator *la; 1254 char buf[LACP_LAGIDSTR_MAX+1]; 1255 1256 if (lp->lp_aggregator) { 1257 return; 1258 } 1259 1260 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1261 ("timer_wait_while still active")); 1262 1263 LACP_DPRINTF((lp, "port lagid=%s\n", 1264 lacp_format_lagid(&lp->lp_actor, &lp->lp_partner, 1265 buf, sizeof(buf)))); 1266 1267 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 1268 if (lacp_aggregator_is_compatible(la, lp)) { 1269 break; 1270 } 1271 } 1272 1273 if (la == NULL) { 1274 la = lacp_aggregator_get(lsc, lp); 1275 if (la == NULL) { 1276 LACP_DPRINTF((lp, "aggregator creation failed\n")); 1277 1278 /* 1279 * will retry on the next tick. 1280 */ 1281 1282 return; 1283 } 1284 lacp_fill_aggregator_id(la, lp); 1285 LACP_DPRINTF((lp, "aggregator created\n")); 1286 } else { 1287 LACP_DPRINTF((lp, "compatible aggregator found\n")); 1288 if (la->la_refcnt == LACP_MAX_PORTS) 1289 return; 1290 lacp_aggregator_addref(lsc, la); 1291 } 1292 1293 LACP_DPRINTF((lp, "aggregator lagid=%s\n", 1294 lacp_format_lagid(&la->la_actor, &la->la_partner, 1295 buf, sizeof(buf)))); 1296 1297 lp->lp_aggregator = la; 1298 lp->lp_selected = LACP_SELECTED; 1299 } 1300 1301 /* 1302 * lacp_unselect: finish unselect/detach process. 1303 */ 1304 1305 static void 1306 lacp_unselect(struct lacp_port *lp) 1307 { 1308 struct lacp_softc *lsc = lp->lp_lsc; 1309 struct lacp_aggregator *la = lp->lp_aggregator; 1310 1311 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1312 ("timer_wait_while still active")); 1313 1314 if (la == NULL) { 1315 return; 1316 } 1317 1318 lp->lp_aggregator = NULL; 1319 lacp_aggregator_delref(lsc, la); 1320 } 1321 1322 /* mux machine */ 1323 1324 static void 1325 lacp_sm_mux(struct lacp_port *lp) 1326 { 1327 struct lagg_port *lgp = lp->lp_lagg; 1328 struct lagg_softc *sc = lgp->lp_softc; 1329 enum lacp_mux_state new_state; 1330 boolean_t p_sync = 1331 (lp->lp_partner.lip_state & LACP_STATE_SYNC) != 0; 1332 boolean_t p_collecting = 1333 (lp->lp_partner.lip_state & LACP_STATE_COLLECTING) != 0; 1334 enum lacp_selected selected = lp->lp_selected; 1335 struct lacp_aggregator *la; 1336 1337 if (V_lacp_debug > 1) 1338 lacp_dprintf(lp, "%s: state= 0x%x, selected= 0x%x, " 1339 "p_sync= 0x%x, p_collecting= 0x%x\n", __func__, 1340 lp->lp_mux_state, selected, p_sync, p_collecting); 1341 1342 re_eval: 1343 la = lp->lp_aggregator; 1344 KASSERT(lp->lp_mux_state == LACP_MUX_DETACHED || la != NULL, 1345 ("MUX not detached")); 1346 new_state = lp->lp_mux_state; 1347 switch (lp->lp_mux_state) { 1348 case LACP_MUX_DETACHED: 1349 if (selected != LACP_UNSELECTED) { 1350 new_state = LACP_MUX_WAITING; 1351 } 1352 break; 1353 case LACP_MUX_WAITING: 1354 KASSERT(la->la_pending > 0 || 1355 !LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1356 ("timer_wait_while still active")); 1357 if (selected == LACP_SELECTED && la->la_pending == 0) { 1358 new_state = LACP_MUX_ATTACHED; 1359 } else if (selected == LACP_UNSELECTED) { 1360 new_state = LACP_MUX_DETACHED; 1361 } 1362 break; 1363 case LACP_MUX_ATTACHED: 1364 if (selected == LACP_SELECTED && p_sync) { 1365 new_state = LACP_MUX_COLLECTING; 1366 } else if (selected != LACP_SELECTED) { 1367 new_state = LACP_MUX_DETACHED; 1368 } 1369 break; 1370 case LACP_MUX_COLLECTING: 1371 if (selected == LACP_SELECTED && p_sync && p_collecting) { 1372 new_state = LACP_MUX_DISTRIBUTING; 1373 } else if (selected != LACP_SELECTED || !p_sync) { 1374 new_state = LACP_MUX_ATTACHED; 1375 } 1376 break; 1377 case LACP_MUX_DISTRIBUTING: 1378 if (selected != LACP_SELECTED || !p_sync || !p_collecting) { 1379 new_state = LACP_MUX_COLLECTING; 1380 lacp_dprintf(lp, "Interface stopped DISTRIBUTING, possible flapping\n"); 1381 sc->sc_flapping++; 1382 } 1383 break; 1384 default: 1385 panic("%s: unknown state", __func__); 1386 } 1387 1388 if (lp->lp_mux_state == new_state) { 1389 return; 1390 } 1391 1392 lacp_set_mux(lp, new_state); 1393 goto re_eval; 1394 } 1395 1396 static void 1397 lacp_set_mux(struct lacp_port *lp, enum lacp_mux_state new_state) 1398 { 1399 struct lacp_aggregator *la = lp->lp_aggregator; 1400 1401 if (lp->lp_mux_state == new_state) { 1402 return; 1403 } 1404 1405 switch (new_state) { 1406 case LACP_MUX_DETACHED: 1407 lp->lp_state &= ~LACP_STATE_SYNC; 1408 lacp_disable_distributing(lp); 1409 lacp_disable_collecting(lp); 1410 lacp_sm_assert_ntt(lp); 1411 /* cancel timer */ 1412 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE)) { 1413 KASSERT(la->la_pending > 0, 1414 ("timer_wait_while not active")); 1415 la->la_pending--; 1416 } 1417 LACP_TIMER_DISARM(lp, LACP_TIMER_WAIT_WHILE); 1418 lacp_unselect(lp); 1419 break; 1420 case LACP_MUX_WAITING: 1421 LACP_TIMER_ARM(lp, LACP_TIMER_WAIT_WHILE, 1422 LACP_AGGREGATE_WAIT_TIME); 1423 la->la_pending++; 1424 break; 1425 case LACP_MUX_ATTACHED: 1426 lp->lp_state |= LACP_STATE_SYNC; 1427 lacp_disable_collecting(lp); 1428 lacp_sm_assert_ntt(lp); 1429 break; 1430 case LACP_MUX_COLLECTING: 1431 lacp_enable_collecting(lp); 1432 lacp_disable_distributing(lp); 1433 lacp_sm_assert_ntt(lp); 1434 break; 1435 case LACP_MUX_DISTRIBUTING: 1436 lacp_enable_distributing(lp); 1437 break; 1438 default: 1439 panic("%s: unknown state", __func__); 1440 } 1441 1442 LACP_DPRINTF((lp, "mux_state %d -> %d\n", lp->lp_mux_state, new_state)); 1443 1444 lp->lp_mux_state = new_state; 1445 } 1446 1447 static void 1448 lacp_sm_mux_timer(struct lacp_port *lp) 1449 { 1450 struct lacp_aggregator *la = lp->lp_aggregator; 1451 char buf[LACP_LAGIDSTR_MAX+1]; 1452 1453 KASSERT(la->la_pending > 0, ("no pending event")); 1454 1455 LACP_DPRINTF((lp, "%s: aggregator %s, pending %d -> %d\n", __func__, 1456 lacp_format_lagid(&la->la_actor, &la->la_partner, 1457 buf, sizeof(buf)), 1458 la->la_pending, la->la_pending - 1)); 1459 1460 la->la_pending--; 1461 } 1462 1463 /* periodic transmit machine */ 1464 1465 static void 1466 lacp_sm_ptx_update_timeout(struct lacp_port *lp, uint8_t oldpstate) 1467 { 1468 if (LACP_STATE_EQ(oldpstate, lp->lp_partner.lip_state, 1469 LACP_STATE_TIMEOUT)) { 1470 return; 1471 } 1472 1473 LACP_DPRINTF((lp, "partner timeout changed\n")); 1474 1475 /* 1476 * FAST_PERIODIC -> SLOW_PERIODIC 1477 * or 1478 * SLOW_PERIODIC (-> PERIODIC_TX) -> FAST_PERIODIC 1479 * 1480 * let lacp_sm_ptx_tx_schedule to update timeout. 1481 */ 1482 1483 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1484 1485 /* 1486 * if timeout has been shortened, assert NTT. 1487 */ 1488 1489 if ((lp->lp_partner.lip_state & LACP_STATE_TIMEOUT)) { 1490 lacp_sm_assert_ntt(lp); 1491 } 1492 } 1493 1494 static void 1495 lacp_sm_ptx_tx_schedule(struct lacp_port *lp) 1496 { 1497 int timeout; 1498 1499 if (!(lp->lp_state & LACP_STATE_ACTIVITY) && 1500 !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) { 1501 1502 /* 1503 * NO_PERIODIC 1504 */ 1505 1506 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1507 return; 1508 } 1509 1510 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_PERIODIC)) { 1511 return; 1512 } 1513 1514 timeout = (lp->lp_partner.lip_state & LACP_STATE_TIMEOUT) ? 1515 LACP_FAST_PERIODIC_TIME : LACP_SLOW_PERIODIC_TIME; 1516 1517 LACP_TIMER_ARM(lp, LACP_TIMER_PERIODIC, timeout); 1518 } 1519 1520 static void 1521 lacp_sm_ptx_timer(struct lacp_port *lp) 1522 { 1523 lacp_sm_assert_ntt(lp); 1524 } 1525 1526 static void 1527 lacp_sm_rx(struct lacp_port *lp, const struct lacpdu *du) 1528 { 1529 int timeout; 1530 1531 /* 1532 * check LACP_DISABLED first 1533 */ 1534 1535 if (!(lp->lp_state & LACP_STATE_AGGREGATION)) { 1536 return; 1537 } 1538 1539 /* 1540 * check loopback condition. 1541 */ 1542 1543 if (!lacp_compare_systemid(&du->ldu_actor.lip_systemid, 1544 &lp->lp_actor.lip_systemid)) { 1545 return; 1546 } 1547 1548 /* 1549 * EXPIRED, DEFAULTED, CURRENT -> CURRENT 1550 */ 1551 1552 lacp_sm_rx_update_selected(lp, du); 1553 lacp_sm_rx_update_ntt(lp, du); 1554 lacp_sm_rx_record_pdu(lp, du); 1555 1556 timeout = (lp->lp_state & LACP_STATE_TIMEOUT) ? 1557 LACP_SHORT_TIMEOUT_TIME : LACP_LONG_TIMEOUT_TIME; 1558 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, timeout); 1559 1560 lp->lp_state &= ~LACP_STATE_EXPIRED; 1561 1562 /* 1563 * kick transmit machine without waiting the next tick. 1564 */ 1565 1566 lacp_sm_tx(lp); 1567 } 1568 1569 static void 1570 lacp_sm_rx_set_expired(struct lacp_port *lp) 1571 { 1572 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1573 lp->lp_partner.lip_state |= LACP_STATE_TIMEOUT; 1574 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, LACP_SHORT_TIMEOUT_TIME); 1575 lp->lp_state |= LACP_STATE_EXPIRED; 1576 } 1577 1578 static void 1579 lacp_sm_rx_timer(struct lacp_port *lp) 1580 { 1581 if ((lp->lp_state & LACP_STATE_EXPIRED) == 0) { 1582 /* CURRENT -> EXPIRED */ 1583 LACP_DPRINTF((lp, "%s: CURRENT -> EXPIRED\n", __func__)); 1584 lacp_sm_rx_set_expired(lp); 1585 } else { 1586 /* EXPIRED -> DEFAULTED */ 1587 LACP_DPRINTF((lp, "%s: EXPIRED -> DEFAULTED\n", __func__)); 1588 lacp_sm_rx_update_default_selected(lp); 1589 lacp_sm_rx_record_default(lp); 1590 lp->lp_state &= ~LACP_STATE_EXPIRED; 1591 } 1592 } 1593 1594 static void 1595 lacp_sm_rx_record_pdu(struct lacp_port *lp, const struct lacpdu *du) 1596 { 1597 boolean_t active; 1598 uint8_t oldpstate; 1599 char buf[LACP_STATESTR_MAX+1]; 1600 1601 LACP_TRACE(lp); 1602 1603 oldpstate = lp->lp_partner.lip_state; 1604 1605 active = (du->ldu_actor.lip_state & LACP_STATE_ACTIVITY) 1606 || ((lp->lp_state & LACP_STATE_ACTIVITY) && 1607 (du->ldu_partner.lip_state & LACP_STATE_ACTIVITY)); 1608 1609 lp->lp_partner = du->ldu_actor; 1610 if (active && 1611 ((LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1612 LACP_STATE_AGGREGATION) && 1613 !lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner)) 1614 || (du->ldu_partner.lip_state & LACP_STATE_AGGREGATION) == 0)) { 1615 /* XXX nothing? */ 1616 } else { 1617 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1618 } 1619 1620 lp->lp_state &= ~LACP_STATE_DEFAULTED; 1621 1622 if (oldpstate != lp->lp_partner.lip_state) { 1623 LACP_DPRINTF((lp, "old pstate %s\n", 1624 lacp_format_state(oldpstate, buf, sizeof(buf)))); 1625 LACP_DPRINTF((lp, "new pstate %s\n", 1626 lacp_format_state(lp->lp_partner.lip_state, buf, 1627 sizeof(buf)))); 1628 } 1629 1630 /* XXX Hack, still need to implement 5.4.9 para 2,3,4 */ 1631 if (lp->lp_lsc->lsc_strict_mode) 1632 lp->lp_partner.lip_state |= LACP_STATE_SYNC; 1633 1634 lacp_sm_ptx_update_timeout(lp, oldpstate); 1635 } 1636 1637 static void 1638 lacp_sm_rx_update_ntt(struct lacp_port *lp, const struct lacpdu *du) 1639 { 1640 1641 LACP_TRACE(lp); 1642 1643 if (lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner) || 1644 !LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1645 LACP_STATE_ACTIVITY | LACP_STATE_SYNC | LACP_STATE_AGGREGATION)) { 1646 LACP_DPRINTF((lp, "%s: assert ntt\n", __func__)); 1647 lacp_sm_assert_ntt(lp); 1648 } 1649 } 1650 1651 static void 1652 lacp_sm_rx_record_default(struct lacp_port *lp) 1653 { 1654 uint8_t oldpstate; 1655 1656 LACP_TRACE(lp); 1657 1658 oldpstate = lp->lp_partner.lip_state; 1659 if (lp->lp_lsc->lsc_strict_mode) 1660 lp->lp_partner = lacp_partner_admin_strict; 1661 else 1662 lp->lp_partner = lacp_partner_admin_optimistic;; 1663 lp->lp_state |= LACP_STATE_DEFAULTED; 1664 lacp_sm_ptx_update_timeout(lp, oldpstate); 1665 } 1666 1667 static void 1668 lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *lp, 1669 const struct lacp_peerinfo *info) 1670 { 1671 1672 LACP_TRACE(lp); 1673 1674 if (lacp_compare_peerinfo(&lp->lp_partner, info) || 1675 !LACP_STATE_EQ(lp->lp_partner.lip_state, info->lip_state, 1676 LACP_STATE_AGGREGATION)) { 1677 lp->lp_selected = LACP_UNSELECTED; 1678 /* mux machine will clean up lp->lp_aggregator */ 1679 } 1680 } 1681 1682 static void 1683 lacp_sm_rx_update_selected(struct lacp_port *lp, const struct lacpdu *du) 1684 { 1685 1686 LACP_TRACE(lp); 1687 1688 lacp_sm_rx_update_selected_from_peerinfo(lp, &du->ldu_actor); 1689 } 1690 1691 static void 1692 lacp_sm_rx_update_default_selected(struct lacp_port *lp) 1693 { 1694 1695 LACP_TRACE(lp); 1696 1697 if (lp->lp_lsc->lsc_strict_mode) 1698 lacp_sm_rx_update_selected_from_peerinfo(lp, 1699 &lacp_partner_admin_strict); 1700 else 1701 lacp_sm_rx_update_selected_from_peerinfo(lp, 1702 &lacp_partner_admin_optimistic); 1703 } 1704 1705 /* transmit machine */ 1706 1707 static void 1708 lacp_sm_tx(struct lacp_port *lp) 1709 { 1710 int error = 0; 1711 1712 if (!(lp->lp_state & LACP_STATE_AGGREGATION) 1713 #if 1 1714 || (!(lp->lp_state & LACP_STATE_ACTIVITY) 1715 && !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) 1716 #endif 1717 ) { 1718 lp->lp_flags &= ~LACP_PORT_NTT; 1719 } 1720 1721 if (!(lp->lp_flags & LACP_PORT_NTT)) { 1722 return; 1723 } 1724 1725 /* Rate limit to 3 PDUs per LACP_FAST_PERIODIC_TIME */ 1726 if (ppsratecheck(&lp->lp_last_lacpdu, &lp->lp_lacpdu_sent, 1727 (3 / LACP_FAST_PERIODIC_TIME)) == 0) { 1728 LACP_DPRINTF((lp, "rate limited pdu\n")); 1729 return; 1730 } 1731 1732 if (((1 << lp->lp_ifp->if_dunit) & lp->lp_lsc->lsc_debug.lsc_tx_test) == 0) { 1733 error = lacp_xmit_lacpdu(lp); 1734 } else { 1735 LACP_TPRINTF((lp, "Dropping TX PDU\n")); 1736 } 1737 1738 if (error == 0) { 1739 lp->lp_flags &= ~LACP_PORT_NTT; 1740 } else { 1741 LACP_DPRINTF((lp, "lacpdu transmit failure, error %d\n", 1742 error)); 1743 } 1744 } 1745 1746 static void 1747 lacp_sm_assert_ntt(struct lacp_port *lp) 1748 { 1749 1750 lp->lp_flags |= LACP_PORT_NTT; 1751 } 1752 1753 static void 1754 lacp_run_timers(struct lacp_port *lp) 1755 { 1756 int i; 1757 1758 for (i = 0; i < LACP_NTIMER; i++) { 1759 KASSERT(lp->lp_timer[i] >= 0, 1760 ("invalid timer value %d", lp->lp_timer[i])); 1761 if (lp->lp_timer[i] == 0) { 1762 continue; 1763 } else if (--lp->lp_timer[i] <= 0) { 1764 if (lacp_timer_funcs[i]) { 1765 (*lacp_timer_funcs[i])(lp); 1766 } 1767 } 1768 } 1769 } 1770 1771 int 1772 lacp_marker_input(struct lacp_port *lp, struct mbuf *m) 1773 { 1774 struct lacp_softc *lsc = lp->lp_lsc; 1775 struct lagg_port *lgp = lp->lp_lagg; 1776 struct lacp_port *lp2; 1777 struct markerdu *mdu; 1778 int error = 0; 1779 int pending = 0; 1780 1781 if (m->m_pkthdr.len != sizeof(*mdu)) { 1782 goto bad; 1783 } 1784 1785 if ((m->m_flags & M_MCAST) == 0) { 1786 goto bad; 1787 } 1788 1789 if (m->m_len < sizeof(*mdu)) { 1790 m = m_pullup(m, sizeof(*mdu)); 1791 if (m == NULL) { 1792 return (ENOMEM); 1793 } 1794 } 1795 1796 mdu = mtod(m, struct markerdu *); 1797 1798 if (memcmp(&mdu->mdu_eh.ether_dhost, 1799 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 1800 goto bad; 1801 } 1802 1803 if (mdu->mdu_sph.sph_version != 1) { 1804 goto bad; 1805 } 1806 1807 switch (mdu->mdu_tlv.tlv_type) { 1808 case MARKER_TYPE_INFO: 1809 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 1810 marker_info_tlv_template, TRUE)) { 1811 goto bad; 1812 } 1813 mdu->mdu_tlv.tlv_type = MARKER_TYPE_RESPONSE; 1814 memcpy(&mdu->mdu_eh.ether_dhost, 1815 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN); 1816 memcpy(&mdu->mdu_eh.ether_shost, 1817 lgp->lp_lladdr, ETHER_ADDR_LEN); 1818 error = lagg_enqueue(lp->lp_ifp, m); 1819 break; 1820 1821 case MARKER_TYPE_RESPONSE: 1822 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 1823 marker_response_tlv_template, TRUE)) { 1824 goto bad; 1825 } 1826 LACP_DPRINTF((lp, "marker response, port=%u, sys=%6D, id=%u\n", 1827 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, 1828 ":", ntohl(mdu->mdu_info.mi_rq_xid))); 1829 1830 /* Verify that it is the last marker we sent out */ 1831 if (memcmp(&mdu->mdu_info, &lp->lp_marker, 1832 sizeof(struct lacp_markerinfo))) 1833 goto bad; 1834 1835 LACP_LOCK(lsc); 1836 lp->lp_flags &= ~LACP_PORT_MARK; 1837 1838 if (lsc->lsc_suppress_distributing) { 1839 /* Check if any ports are waiting for a response */ 1840 LIST_FOREACH(lp2, &lsc->lsc_ports, lp_next) { 1841 if (lp2->lp_flags & LACP_PORT_MARK) { 1842 pending = 1; 1843 break; 1844 } 1845 } 1846 1847 if (pending == 0) { 1848 /* All interface queues are clear */ 1849 LACP_DPRINTF((NULL, "queue flush complete\n")); 1850 lsc->lsc_suppress_distributing = FALSE; 1851 } 1852 } 1853 LACP_UNLOCK(lsc); 1854 m_freem(m); 1855 break; 1856 1857 default: 1858 goto bad; 1859 } 1860 1861 return (error); 1862 1863 bad: 1864 LACP_DPRINTF((lp, "bad marker frame\n")); 1865 m_freem(m); 1866 return (EINVAL); 1867 } 1868 1869 static int 1870 tlv_check(const void *p, size_t size, const struct tlvhdr *tlv, 1871 const struct tlv_template *tmpl, boolean_t check_type) 1872 { 1873 while (/* CONSTCOND */ 1) { 1874 if ((const char *)tlv - (const char *)p + sizeof(*tlv) > size) { 1875 return (EINVAL); 1876 } 1877 if ((check_type && tlv->tlv_type != tmpl->tmpl_type) || 1878 tlv->tlv_length != tmpl->tmpl_length) { 1879 return (EINVAL); 1880 } 1881 if (tmpl->tmpl_type == 0) { 1882 break; 1883 } 1884 tlv = (const struct tlvhdr *) 1885 ((const char *)tlv + tlv->tlv_length); 1886 tmpl++; 1887 } 1888 1889 return (0); 1890 } 1891 1892 /* Debugging */ 1893 const char * 1894 lacp_format_mac(const uint8_t *mac, char *buf, size_t buflen) 1895 { 1896 snprintf(buf, buflen, "%02X-%02X-%02X-%02X-%02X-%02X", 1897 (int)mac[0], 1898 (int)mac[1], 1899 (int)mac[2], 1900 (int)mac[3], 1901 (int)mac[4], 1902 (int)mac[5]); 1903 1904 return (buf); 1905 } 1906 1907 const char * 1908 lacp_format_systemid(const struct lacp_systemid *sysid, 1909 char *buf, size_t buflen) 1910 { 1911 char macbuf[LACP_MACSTR_MAX+1]; 1912 1913 snprintf(buf, buflen, "%04X,%s", 1914 ntohs(sysid->lsi_prio), 1915 lacp_format_mac(sysid->lsi_mac, macbuf, sizeof(macbuf))); 1916 1917 return (buf); 1918 } 1919 1920 const char * 1921 lacp_format_portid(const struct lacp_portid *portid, char *buf, size_t buflen) 1922 { 1923 snprintf(buf, buflen, "%04X,%04X", 1924 ntohs(portid->lpi_prio), 1925 ntohs(portid->lpi_portno)); 1926 1927 return (buf); 1928 } 1929 1930 const char * 1931 lacp_format_partner(const struct lacp_peerinfo *peer, char *buf, size_t buflen) 1932 { 1933 char sysid[LACP_SYSTEMIDSTR_MAX+1]; 1934 char portid[LACP_PORTIDSTR_MAX+1]; 1935 1936 snprintf(buf, buflen, "(%s,%04X,%s)", 1937 lacp_format_systemid(&peer->lip_systemid, sysid, sizeof(sysid)), 1938 ntohs(peer->lip_key), 1939 lacp_format_portid(&peer->lip_portid, portid, sizeof(portid))); 1940 1941 return (buf); 1942 } 1943 1944 const char * 1945 lacp_format_lagid(const struct lacp_peerinfo *a, 1946 const struct lacp_peerinfo *b, char *buf, size_t buflen) 1947 { 1948 char astr[LACP_PARTNERSTR_MAX+1]; 1949 char bstr[LACP_PARTNERSTR_MAX+1]; 1950 1951 #if 0 1952 /* 1953 * there's a convention to display small numbered peer 1954 * in the left. 1955 */ 1956 1957 if (lacp_compare_peerinfo(a, b) > 0) { 1958 const struct lacp_peerinfo *t; 1959 1960 t = a; 1961 a = b; 1962 b = t; 1963 } 1964 #endif 1965 1966 snprintf(buf, buflen, "[%s,%s]", 1967 lacp_format_partner(a, astr, sizeof(astr)), 1968 lacp_format_partner(b, bstr, sizeof(bstr))); 1969 1970 return (buf); 1971 } 1972 1973 const char * 1974 lacp_format_lagid_aggregator(const struct lacp_aggregator *la, 1975 char *buf, size_t buflen) 1976 { 1977 if (la == NULL) { 1978 return ("(none)"); 1979 } 1980 1981 return (lacp_format_lagid(&la->la_actor, &la->la_partner, buf, buflen)); 1982 } 1983 1984 const char * 1985 lacp_format_state(uint8_t state, char *buf, size_t buflen) 1986 { 1987 snprintf(buf, buflen, "%b", state, LACP_STATE_BITS); 1988 return (buf); 1989 } 1990 1991 static void 1992 lacp_dump_lacpdu(const struct lacpdu *du) 1993 { 1994 char buf[LACP_PARTNERSTR_MAX+1]; 1995 char buf2[LACP_STATESTR_MAX+1]; 1996 1997 printf("actor=%s\n", 1998 lacp_format_partner(&du->ldu_actor, buf, sizeof(buf))); 1999 printf("actor.state=%s\n", 2000 lacp_format_state(du->ldu_actor.lip_state, buf2, sizeof(buf2))); 2001 printf("partner=%s\n", 2002 lacp_format_partner(&du->ldu_partner, buf, sizeof(buf))); 2003 printf("partner.state=%s\n", 2004 lacp_format_state(du->ldu_partner.lip_state, buf2, sizeof(buf2))); 2005 2006 printf("maxdelay=%d\n", ntohs(du->ldu_collector.lci_maxdelay)); 2007 } 2008 2009 static void 2010 lacp_dprintf(const struct lacp_port *lp, const char *fmt, ...) 2011 { 2012 va_list va; 2013 2014 if (lp) { 2015 printf("%s: ", lp->lp_ifp->if_xname); 2016 } 2017 2018 va_start(va, fmt); 2019 vprintf(fmt, va); 2020 va_end(va); 2021 } 2022