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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/10.3/sys/net/ieee8023ad_lacp.c 290736 2015-11-13 01:03:59Z smh $"); 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 VNET_DEFINE(int, lacp_debug); 191 #define V_lacp_debug VNET(lacp_debug) 192 SYSCTL_NODE(_net_link_lagg, OID_AUTO, lacp, CTLFLAG_RD, 0, "ieee802.3ad"); 193 SYSCTL_INT(_net_link_lagg_lacp, OID_AUTO, debug, CTLFLAG_RWTUN | CTLFLAG_VNET, 194 &VNET_NAME(lacp_debug), 0, "Enable LACP debug logging (1=debug, 2=trace)"); 195 196 static VNET_DEFINE(int, lacp_default_strict_mode) = 1; 197 SYSCTL_INT(_net_link_lagg_lacp, OID_AUTO, default_strict_mode, CTLFLAG_RWTUN, 198 &VNET_NAME(lacp_default_strict_mode), 0, 199 "LACP strict protocol compliance default"); 200 201 #define LACP_DPRINTF(a) if (V_lacp_debug & 0x01) { lacp_dprintf a ; } 202 #define LACP_TRACE(a) if (V_lacp_debug & 0x02) { lacp_dprintf(a,"%s\n",__func__); } 203 #define LACP_TPRINTF(a) if (V_lacp_debug & 0x04) { lacp_dprintf a ; } 204 205 /* 206 * partner administration variables. 207 * XXX should be configurable. 208 */ 209 210 static const struct lacp_peerinfo lacp_partner_admin_optimistic = { 211 .lip_systemid = { .lsi_prio = 0xffff }, 212 .lip_portid = { .lpi_prio = 0xffff }, 213 .lip_state = LACP_STATE_SYNC | LACP_STATE_AGGREGATION | 214 LACP_STATE_COLLECTING | LACP_STATE_DISTRIBUTING, 215 }; 216 217 static const struct lacp_peerinfo lacp_partner_admin_strict = { 218 .lip_systemid = { .lsi_prio = 0xffff }, 219 .lip_portid = { .lpi_prio = 0xffff }, 220 .lip_state = 0, 221 }; 222 223 static const lacp_timer_func_t lacp_timer_funcs[LACP_NTIMER] = { 224 [LACP_TIMER_CURRENT_WHILE] = lacp_sm_rx_timer, 225 [LACP_TIMER_PERIODIC] = lacp_sm_ptx_timer, 226 [LACP_TIMER_WAIT_WHILE] = lacp_sm_mux_timer, 227 }; 228 229 struct mbuf * 230 lacp_input(struct lagg_port *lgp, struct mbuf *m) 231 { 232 struct lacp_port *lp = LACP_PORT(lgp); 233 uint8_t subtype; 234 235 if (m->m_pkthdr.len < sizeof(struct ether_header) + sizeof(subtype)) { 236 m_freem(m); 237 return (NULL); 238 } 239 240 m_copydata(m, sizeof(struct ether_header), sizeof(subtype), &subtype); 241 switch (subtype) { 242 case SLOWPROTOCOLS_SUBTYPE_LACP: 243 lacp_pdu_input(lp, m); 244 return (NULL); 245 246 case SLOWPROTOCOLS_SUBTYPE_MARKER: 247 lacp_marker_input(lp, m); 248 return (NULL); 249 } 250 251 /* Not a subtype we are interested in */ 252 return (m); 253 } 254 255 /* 256 * lacp_pdu_input: process lacpdu 257 */ 258 static int 259 lacp_pdu_input(struct lacp_port *lp, struct mbuf *m) 260 { 261 struct lacp_softc *lsc = lp->lp_lsc; 262 struct lacpdu *du; 263 int error = 0; 264 265 if (m->m_pkthdr.len != sizeof(*du)) { 266 goto bad; 267 } 268 269 if ((m->m_flags & M_MCAST) == 0) { 270 goto bad; 271 } 272 273 if (m->m_len < sizeof(*du)) { 274 m = m_pullup(m, sizeof(*du)); 275 if (m == NULL) { 276 return (ENOMEM); 277 } 278 } 279 280 du = mtod(m, struct lacpdu *); 281 282 if (memcmp(&du->ldu_eh.ether_dhost, 283 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 284 goto bad; 285 } 286 287 /* 288 * ignore the version for compatibility with 289 * the future protocol revisions. 290 */ 291 #if 0 292 if (du->ldu_sph.sph_version != 1) { 293 goto bad; 294 } 295 #endif 296 297 /* 298 * ignore tlv types for compatibility with 299 * the future protocol revisions. 300 */ 301 if (tlv_check(du, sizeof(*du), &du->ldu_tlv_actor, 302 lacp_info_tlv_template, FALSE)) { 303 goto bad; 304 } 305 306 if (V_lacp_debug > 0) { 307 lacp_dprintf(lp, "lacpdu receive\n"); 308 lacp_dump_lacpdu(du); 309 } 310 311 if ((1 << lp->lp_ifp->if_dunit) & lp->lp_lsc->lsc_debug.lsc_rx_test) { 312 LACP_TPRINTF((lp, "Dropping RX PDU\n")); 313 goto bad; 314 } 315 316 LACP_LOCK(lsc); 317 lacp_sm_rx(lp, du); 318 LACP_UNLOCK(lsc); 319 320 m_freem(m); 321 return (error); 322 323 bad: 324 m_freem(m); 325 return (EINVAL); 326 } 327 328 static void 329 lacp_fill_actorinfo(struct lacp_port *lp, struct lacp_peerinfo *info) 330 { 331 struct lagg_port *lgp = lp->lp_lagg; 332 struct lagg_softc *sc = lgp->lp_softc; 333 334 info->lip_systemid.lsi_prio = htons(LACP_SYSTEM_PRIO); 335 memcpy(&info->lip_systemid.lsi_mac, 336 IF_LLADDR(sc->sc_ifp), ETHER_ADDR_LEN); 337 info->lip_portid.lpi_prio = htons(LACP_PORT_PRIO); 338 info->lip_portid.lpi_portno = htons(lp->lp_ifp->if_index); 339 info->lip_state = lp->lp_state; 340 } 341 342 static void 343 lacp_fill_markerinfo(struct lacp_port *lp, struct lacp_markerinfo *info) 344 { 345 struct ifnet *ifp = lp->lp_ifp; 346 347 /* Fill in the port index and system id (encoded as the MAC) */ 348 info->mi_rq_port = htons(ifp->if_index); 349 memcpy(&info->mi_rq_system, lp->lp_systemid.lsi_mac, ETHER_ADDR_LEN); 350 info->mi_rq_xid = htonl(0); 351 } 352 353 static int 354 lacp_xmit_lacpdu(struct lacp_port *lp) 355 { 356 struct lagg_port *lgp = lp->lp_lagg; 357 struct mbuf *m; 358 struct lacpdu *du; 359 int error; 360 361 LACP_LOCK_ASSERT(lp->lp_lsc); 362 363 m = m_gethdr(M_NOWAIT, MT_DATA); 364 if (m == NULL) { 365 return (ENOMEM); 366 } 367 m->m_len = m->m_pkthdr.len = sizeof(*du); 368 369 du = mtod(m, struct lacpdu *); 370 memset(du, 0, sizeof(*du)); 371 372 memcpy(&du->ldu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 373 ETHER_ADDR_LEN); 374 memcpy(&du->ldu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN); 375 du->ldu_eh.ether_type = htons(ETHERTYPE_SLOW); 376 377 du->ldu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_LACP; 378 du->ldu_sph.sph_version = 1; 379 380 TLV_SET(&du->ldu_tlv_actor, LACP_TYPE_ACTORINFO, sizeof(du->ldu_actor)); 381 du->ldu_actor = lp->lp_actor; 382 383 TLV_SET(&du->ldu_tlv_partner, LACP_TYPE_PARTNERINFO, 384 sizeof(du->ldu_partner)); 385 du->ldu_partner = lp->lp_partner; 386 387 TLV_SET(&du->ldu_tlv_collector, LACP_TYPE_COLLECTORINFO, 388 sizeof(du->ldu_collector)); 389 du->ldu_collector.lci_maxdelay = 0; 390 391 if (V_lacp_debug > 0) { 392 lacp_dprintf(lp, "lacpdu transmit\n"); 393 lacp_dump_lacpdu(du); 394 } 395 396 m->m_flags |= M_MCAST; 397 398 /* 399 * XXX should use higher priority queue. 400 * otherwise network congestion can break aggregation. 401 */ 402 403 error = lagg_enqueue(lp->lp_ifp, m); 404 return (error); 405 } 406 407 static int 408 lacp_xmit_marker(struct lacp_port *lp) 409 { 410 struct lagg_port *lgp = lp->lp_lagg; 411 struct mbuf *m; 412 struct markerdu *mdu; 413 int error; 414 415 LACP_LOCK_ASSERT(lp->lp_lsc); 416 417 m = m_gethdr(M_NOWAIT, MT_DATA); 418 if (m == NULL) { 419 return (ENOMEM); 420 } 421 m->m_len = m->m_pkthdr.len = sizeof(*mdu); 422 423 mdu = mtod(m, struct markerdu *); 424 memset(mdu, 0, sizeof(*mdu)); 425 426 memcpy(&mdu->mdu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 427 ETHER_ADDR_LEN); 428 memcpy(&mdu->mdu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN); 429 mdu->mdu_eh.ether_type = htons(ETHERTYPE_SLOW); 430 431 mdu->mdu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_MARKER; 432 mdu->mdu_sph.sph_version = 1; 433 434 /* Bump the transaction id and copy over the marker info */ 435 lp->lp_marker.mi_rq_xid = htonl(ntohl(lp->lp_marker.mi_rq_xid) + 1); 436 TLV_SET(&mdu->mdu_tlv, MARKER_TYPE_INFO, sizeof(mdu->mdu_info)); 437 mdu->mdu_info = lp->lp_marker; 438 439 LACP_DPRINTF((lp, "marker transmit, port=%u, sys=%6D, id=%u\n", 440 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, ":", 441 ntohl(mdu->mdu_info.mi_rq_xid))); 442 443 m->m_flags |= M_MCAST; 444 error = lagg_enqueue(lp->lp_ifp, m); 445 return (error); 446 } 447 448 void 449 lacp_linkstate(struct lagg_port *lgp) 450 { 451 struct lacp_port *lp = LACP_PORT(lgp); 452 struct lacp_softc *lsc = lp->lp_lsc; 453 struct ifnet *ifp = lgp->lp_ifp; 454 struct ifmediareq ifmr; 455 int error = 0; 456 u_int media; 457 uint8_t old_state; 458 uint16_t old_key; 459 460 bzero((char *)&ifmr, sizeof(ifmr)); 461 error = (*ifp->if_ioctl)(ifp, SIOCGIFMEDIA, (caddr_t)&ifmr); 462 if (error != 0) 463 return; 464 465 LACP_LOCK(lsc); 466 media = ifmr.ifm_active; 467 LACP_DPRINTF((lp, "media changed 0x%x -> 0x%x, ether = %d, fdx = %d, " 468 "link = %d\n", lp->lp_media, media, IFM_TYPE(media) == IFM_ETHER, 469 (media & IFM_FDX) != 0, ifp->if_link_state == LINK_STATE_UP)); 470 old_state = lp->lp_state; 471 old_key = lp->lp_key; 472 473 lp->lp_media = media; 474 /* 475 * If the port is not an active full duplex Ethernet link then it can 476 * not be aggregated. 477 */ 478 if (IFM_TYPE(media) != IFM_ETHER || (media & IFM_FDX) == 0 || 479 ifp->if_link_state != LINK_STATE_UP) { 480 lacp_port_disable(lp); 481 } else { 482 lacp_port_enable(lp); 483 } 484 lp->lp_key = lacp_compose_key(lp); 485 486 if (old_state != lp->lp_state || old_key != lp->lp_key) { 487 LACP_DPRINTF((lp, "-> UNSELECTED\n")); 488 lp->lp_selected = LACP_UNSELECTED; 489 } 490 LACP_UNLOCK(lsc); 491 } 492 493 static void 494 lacp_tick(void *arg) 495 { 496 struct lacp_softc *lsc = arg; 497 struct lacp_port *lp; 498 499 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { 500 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) 501 continue; 502 503 CURVNET_SET(lp->lp_ifp->if_vnet); 504 lacp_run_timers(lp); 505 506 lacp_select(lp); 507 lacp_sm_mux(lp); 508 lacp_sm_tx(lp); 509 lacp_sm_ptx_tx_schedule(lp); 510 CURVNET_RESTORE(); 511 } 512 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc); 513 } 514 515 int 516 lacp_port_create(struct lagg_port *lgp) 517 { 518 struct lagg_softc *sc = lgp->lp_softc; 519 struct lacp_softc *lsc = LACP_SOFTC(sc); 520 struct lacp_port *lp; 521 struct ifnet *ifp = lgp->lp_ifp; 522 struct sockaddr_dl sdl; 523 struct ifmultiaddr *rifma = NULL; 524 int error; 525 526 boolean_t active = TRUE; /* XXX should be configurable */ 527 boolean_t fast = FALSE; /* Configurable via ioctl */ 528 529 bzero((char *)&sdl, sizeof(sdl)); 530 sdl.sdl_len = sizeof(sdl); 531 sdl.sdl_family = AF_LINK; 532 sdl.sdl_index = ifp->if_index; 533 sdl.sdl_type = IFT_ETHER; 534 sdl.sdl_alen = ETHER_ADDR_LEN; 535 536 bcopy(ðermulticastaddr_slowprotocols, 537 LLADDR(&sdl), ETHER_ADDR_LEN); 538 error = if_addmulti(ifp, (struct sockaddr *)&sdl, &rifma); 539 if (error) { 540 printf("%s: ADDMULTI failed on %s\n", __func__, lgp->lp_ifname); 541 return (error); 542 } 543 544 lp = malloc(sizeof(struct lacp_port), 545 M_DEVBUF, M_NOWAIT|M_ZERO); 546 if (lp == NULL) 547 return (ENOMEM); 548 549 LACP_LOCK(lsc); 550 lgp->lp_psc = (caddr_t)lp; 551 lp->lp_ifp = ifp; 552 lp->lp_lagg = lgp; 553 lp->lp_lsc = lsc; 554 lp->lp_ifma = rifma; 555 556 LIST_INSERT_HEAD(&lsc->lsc_ports, lp, lp_next); 557 558 lacp_fill_actorinfo(lp, &lp->lp_actor); 559 lacp_fill_markerinfo(lp, &lp->lp_marker); 560 lp->lp_state = 561 (active ? LACP_STATE_ACTIVITY : 0) | 562 (fast ? LACP_STATE_TIMEOUT : 0); 563 lp->lp_aggregator = NULL; 564 lacp_sm_rx_set_expired(lp); 565 LACP_UNLOCK(lsc); 566 lacp_linkstate(lgp); 567 568 return (0); 569 } 570 571 void 572 lacp_port_destroy(struct lagg_port *lgp) 573 { 574 struct lacp_port *lp = LACP_PORT(lgp); 575 struct lacp_softc *lsc = lp->lp_lsc; 576 int i; 577 578 LACP_LOCK(lsc); 579 for (i = 0; i < LACP_NTIMER; i++) { 580 LACP_TIMER_DISARM(lp, i); 581 } 582 583 lacp_disable_collecting(lp); 584 lacp_disable_distributing(lp); 585 lacp_unselect(lp); 586 587 LIST_REMOVE(lp, lp_next); 588 LACP_UNLOCK(lsc); 589 590 /* The address may have already been removed by if_purgemaddrs() */ 591 if (!lgp->lp_detaching) 592 if_delmulti_ifma(lp->lp_ifma); 593 594 free(lp, M_DEVBUF); 595 } 596 597 void 598 lacp_req(struct lagg_softc *sc, caddr_t data) 599 { 600 struct lacp_opreq *req = (struct lacp_opreq *)data; 601 struct lacp_softc *lsc = LACP_SOFTC(sc); 602 struct lacp_aggregator *la; 603 604 bzero(req, sizeof(struct lacp_opreq)); 605 606 /* 607 * If the LACP softc is NULL, return with the opreq structure full of 608 * zeros. It is normal for the softc to be NULL while the lagg is 609 * being destroyed. 610 */ 611 if (NULL == lsc) 612 return; 613 614 la = lsc->lsc_active_aggregator; 615 LACP_LOCK(lsc); 616 if (la != NULL) { 617 req->actor_prio = ntohs(la->la_actor.lip_systemid.lsi_prio); 618 memcpy(&req->actor_mac, &la->la_actor.lip_systemid.lsi_mac, 619 ETHER_ADDR_LEN); 620 req->actor_key = ntohs(la->la_actor.lip_key); 621 req->actor_portprio = ntohs(la->la_actor.lip_portid.lpi_prio); 622 req->actor_portno = ntohs(la->la_actor.lip_portid.lpi_portno); 623 req->actor_state = la->la_actor.lip_state; 624 625 req->partner_prio = ntohs(la->la_partner.lip_systemid.lsi_prio); 626 memcpy(&req->partner_mac, &la->la_partner.lip_systemid.lsi_mac, 627 ETHER_ADDR_LEN); 628 req->partner_key = ntohs(la->la_partner.lip_key); 629 req->partner_portprio = ntohs(la->la_partner.lip_portid.lpi_prio); 630 req->partner_portno = ntohs(la->la_partner.lip_portid.lpi_portno); 631 req->partner_state = la->la_partner.lip_state; 632 } 633 LACP_UNLOCK(lsc); 634 } 635 636 void 637 lacp_portreq(struct lagg_port *lgp, caddr_t data) 638 { 639 struct lacp_opreq *req = (struct lacp_opreq *)data; 640 struct lacp_port *lp = LACP_PORT(lgp); 641 struct lacp_softc *lsc = lp->lp_lsc; 642 643 LACP_LOCK(lsc); 644 req->actor_prio = ntohs(lp->lp_actor.lip_systemid.lsi_prio); 645 memcpy(&req->actor_mac, &lp->lp_actor.lip_systemid.lsi_mac, 646 ETHER_ADDR_LEN); 647 req->actor_key = ntohs(lp->lp_actor.lip_key); 648 req->actor_portprio = ntohs(lp->lp_actor.lip_portid.lpi_prio); 649 req->actor_portno = ntohs(lp->lp_actor.lip_portid.lpi_portno); 650 req->actor_state = lp->lp_actor.lip_state; 651 652 req->partner_prio = ntohs(lp->lp_partner.lip_systemid.lsi_prio); 653 memcpy(&req->partner_mac, &lp->lp_partner.lip_systemid.lsi_mac, 654 ETHER_ADDR_LEN); 655 req->partner_key = ntohs(lp->lp_partner.lip_key); 656 req->partner_portprio = ntohs(lp->lp_partner.lip_portid.lpi_prio); 657 req->partner_portno = ntohs(lp->lp_partner.lip_portid.lpi_portno); 658 req->partner_state = lp->lp_partner.lip_state; 659 LACP_UNLOCK(lsc); 660 } 661 662 static void 663 lacp_disable_collecting(struct lacp_port *lp) 664 { 665 LACP_DPRINTF((lp, "collecting disabled\n")); 666 lp->lp_state &= ~LACP_STATE_COLLECTING; 667 } 668 669 static void 670 lacp_enable_collecting(struct lacp_port *lp) 671 { 672 LACP_DPRINTF((lp, "collecting enabled\n")); 673 lp->lp_state |= LACP_STATE_COLLECTING; 674 } 675 676 static void 677 lacp_disable_distributing(struct lacp_port *lp) 678 { 679 struct lacp_aggregator *la = lp->lp_aggregator; 680 struct lacp_softc *lsc = lp->lp_lsc; 681 struct lagg_softc *sc = lsc->lsc_softc; 682 char buf[LACP_LAGIDSTR_MAX+1]; 683 684 LACP_LOCK_ASSERT(lsc); 685 686 if (la == NULL || (lp->lp_state & LACP_STATE_DISTRIBUTING) == 0) { 687 return; 688 } 689 690 KASSERT(!TAILQ_EMPTY(&la->la_ports), ("no aggregator ports")); 691 KASSERT(la->la_nports > 0, ("nports invalid (%d)", la->la_nports)); 692 KASSERT(la->la_refcnt >= la->la_nports, ("aggregator refcnt invalid")); 693 694 LACP_DPRINTF((lp, "disable distributing on aggregator %s, " 695 "nports %d -> %d\n", 696 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 697 la->la_nports, la->la_nports - 1)); 698 699 TAILQ_REMOVE(&la->la_ports, lp, lp_dist_q); 700 la->la_nports--; 701 sc->sc_active = la->la_nports; 702 703 if (lsc->lsc_active_aggregator == la) { 704 lacp_suppress_distributing(lsc, la); 705 lacp_select_active_aggregator(lsc); 706 /* regenerate the port map, the active aggregator has changed */ 707 lacp_update_portmap(lsc); 708 } 709 710 lp->lp_state &= ~LACP_STATE_DISTRIBUTING; 711 } 712 713 static void 714 lacp_enable_distributing(struct lacp_port *lp) 715 { 716 struct lacp_aggregator *la = lp->lp_aggregator; 717 struct lacp_softc *lsc = lp->lp_lsc; 718 struct lagg_softc *sc = lsc->lsc_softc; 719 char buf[LACP_LAGIDSTR_MAX+1]; 720 721 LACP_LOCK_ASSERT(lsc); 722 723 if ((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0) { 724 return; 725 } 726 727 LACP_DPRINTF((lp, "enable distributing on aggregator %s, " 728 "nports %d -> %d\n", 729 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 730 la->la_nports, la->la_nports + 1)); 731 732 KASSERT(la->la_refcnt > la->la_nports, ("aggregator refcnt invalid")); 733 TAILQ_INSERT_HEAD(&la->la_ports, lp, lp_dist_q); 734 la->la_nports++; 735 sc->sc_active = la->la_nports; 736 737 lp->lp_state |= LACP_STATE_DISTRIBUTING; 738 739 if (lsc->lsc_active_aggregator == la) { 740 lacp_suppress_distributing(lsc, la); 741 lacp_update_portmap(lsc); 742 } else 743 /* try to become the active aggregator */ 744 lacp_select_active_aggregator(lsc); 745 } 746 747 static void 748 lacp_transit_expire(void *vp) 749 { 750 struct lacp_softc *lsc = vp; 751 752 LACP_LOCK_ASSERT(lsc); 753 754 CURVNET_SET(lsc->lsc_softc->sc_ifp->if_vnet); 755 LACP_TRACE(NULL); 756 CURVNET_RESTORE(); 757 758 lsc->lsc_suppress_distributing = FALSE; 759 } 760 761 void 762 lacp_attach(struct lagg_softc *sc) 763 { 764 struct lacp_softc *lsc; 765 766 lsc = malloc(sizeof(struct lacp_softc), M_DEVBUF, M_WAITOK | M_ZERO); 767 768 sc->sc_psc = (caddr_t)lsc; 769 lsc->lsc_softc = sc; 770 771 lsc->lsc_hashkey = arc4random(); 772 lsc->lsc_active_aggregator = NULL; 773 lsc->lsc_strict_mode = VNET(lacp_default_strict_mode); 774 LACP_LOCK_INIT(lsc); 775 TAILQ_INIT(&lsc->lsc_aggregators); 776 LIST_INIT(&lsc->lsc_ports); 777 778 callout_init_mtx(&lsc->lsc_transit_callout, &lsc->lsc_mtx, 0); 779 callout_init_mtx(&lsc->lsc_callout, &lsc->lsc_mtx, 0); 780 781 /* if the lagg is already up then do the same */ 782 if (sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING) 783 lacp_init(sc); 784 } 785 786 int 787 lacp_detach(void *psc) 788 { 789 struct lacp_softc *lsc = (struct lacp_softc *)psc; 790 791 KASSERT(TAILQ_EMPTY(&lsc->lsc_aggregators), 792 ("aggregators still active")); 793 KASSERT(lsc->lsc_active_aggregator == NULL, 794 ("aggregator still attached")); 795 796 callout_drain(&lsc->lsc_transit_callout); 797 callout_drain(&lsc->lsc_callout); 798 799 LACP_LOCK_DESTROY(lsc); 800 free(lsc, M_DEVBUF); 801 return (0); 802 } 803 804 void 805 lacp_init(struct lagg_softc *sc) 806 { 807 struct lacp_softc *lsc = LACP_SOFTC(sc); 808 809 LACP_LOCK(lsc); 810 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc); 811 LACP_UNLOCK(lsc); 812 } 813 814 void 815 lacp_stop(struct lagg_softc *sc) 816 { 817 struct lacp_softc *lsc = LACP_SOFTC(sc); 818 819 LACP_LOCK(lsc); 820 callout_stop(&lsc->lsc_transit_callout); 821 callout_stop(&lsc->lsc_callout); 822 LACP_UNLOCK(lsc); 823 } 824 825 struct lagg_port * 826 lacp_select_tx_port(struct lagg_softc *sc, struct mbuf *m) 827 { 828 struct lacp_softc *lsc = LACP_SOFTC(sc); 829 struct lacp_portmap *pm; 830 struct lacp_port *lp; 831 uint32_t hash; 832 833 if (__predict_false(lsc->lsc_suppress_distributing)) { 834 LACP_DPRINTF((NULL, "%s: waiting transit\n", __func__)); 835 return (NULL); 836 } 837 838 pm = &lsc->lsc_pmap[lsc->lsc_activemap]; 839 if (pm->pm_count == 0) { 840 LACP_DPRINTF((NULL, "%s: no active aggregator\n", __func__)); 841 return (NULL); 842 } 843 844 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) && 845 M_HASHTYPE_GET(m) != M_HASHTYPE_NONE) 846 hash = m->m_pkthdr.flowid >> sc->flowid_shift; 847 else 848 hash = lagg_hashmbuf(sc, m, lsc->lsc_hashkey); 849 hash %= pm->pm_count; 850 lp = pm->pm_map[hash]; 851 852 KASSERT((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0, 853 ("aggregated port is not distributing")); 854 855 return (lp->lp_lagg); 856 } 857 /* 858 * lacp_suppress_distributing: drop transmit packets for a while 859 * to preserve packet ordering. 860 */ 861 862 static void 863 lacp_suppress_distributing(struct lacp_softc *lsc, struct lacp_aggregator *la) 864 { 865 struct lacp_port *lp; 866 867 if (lsc->lsc_active_aggregator != la) { 868 return; 869 } 870 871 LACP_TRACE(NULL); 872 873 lsc->lsc_suppress_distributing = TRUE; 874 875 /* send a marker frame down each port to verify the queues are empty */ 876 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { 877 lp->lp_flags |= LACP_PORT_MARK; 878 lacp_xmit_marker(lp); 879 } 880 881 /* set a timeout for the marker frames */ 882 callout_reset(&lsc->lsc_transit_callout, 883 LACP_TRANSIT_DELAY * hz / 1000, lacp_transit_expire, lsc); 884 } 885 886 static int 887 lacp_compare_peerinfo(const struct lacp_peerinfo *a, 888 const struct lacp_peerinfo *b) 889 { 890 return (memcmp(a, b, offsetof(struct lacp_peerinfo, lip_state))); 891 } 892 893 static int 894 lacp_compare_systemid(const struct lacp_systemid *a, 895 const struct lacp_systemid *b) 896 { 897 return (memcmp(a, b, sizeof(*a))); 898 } 899 900 #if 0 /* unused */ 901 static int 902 lacp_compare_portid(const struct lacp_portid *a, 903 const struct lacp_portid *b) 904 { 905 return (memcmp(a, b, sizeof(*a))); 906 } 907 #endif 908 909 static uint64_t 910 lacp_aggregator_bandwidth(struct lacp_aggregator *la) 911 { 912 struct lacp_port *lp; 913 uint64_t speed; 914 915 lp = TAILQ_FIRST(&la->la_ports); 916 if (lp == NULL) { 917 return (0); 918 } 919 920 speed = ifmedia_baudrate(lp->lp_media); 921 speed *= la->la_nports; 922 if (speed == 0) { 923 LACP_DPRINTF((lp, "speed 0? media=0x%x nports=%d\n", 924 lp->lp_media, la->la_nports)); 925 } 926 927 return (speed); 928 } 929 930 /* 931 * lacp_select_active_aggregator: select an aggregator to be used to transmit 932 * packets from lagg(4) interface. 933 */ 934 935 static void 936 lacp_select_active_aggregator(struct lacp_softc *lsc) 937 { 938 struct lacp_aggregator *la; 939 struct lacp_aggregator *best_la = NULL; 940 uint64_t best_speed = 0; 941 char buf[LACP_LAGIDSTR_MAX+1]; 942 943 LACP_TRACE(NULL); 944 945 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 946 uint64_t speed; 947 948 if (la->la_nports == 0) { 949 continue; 950 } 951 952 speed = lacp_aggregator_bandwidth(la); 953 LACP_DPRINTF((NULL, "%s, speed=%jd, nports=%d\n", 954 lacp_format_lagid_aggregator(la, buf, sizeof(buf)), 955 speed, la->la_nports)); 956 957 /* This aggregator is chosen if 958 * the partner has a better system priority 959 * or, the total aggregated speed is higher 960 * or, it is already the chosen aggregator 961 */ 962 if ((best_la != NULL && LACP_SYS_PRI(la->la_partner) < 963 LACP_SYS_PRI(best_la->la_partner)) || 964 speed > best_speed || 965 (speed == best_speed && 966 la == lsc->lsc_active_aggregator)) { 967 best_la = la; 968 best_speed = speed; 969 } 970 } 971 972 KASSERT(best_la == NULL || best_la->la_nports > 0, 973 ("invalid aggregator refcnt")); 974 KASSERT(best_la == NULL || !TAILQ_EMPTY(&best_la->la_ports), 975 ("invalid aggregator list")); 976 977 if (lsc->lsc_active_aggregator != best_la) { 978 LACP_DPRINTF((NULL, "active aggregator changed\n")); 979 LACP_DPRINTF((NULL, "old %s\n", 980 lacp_format_lagid_aggregator(lsc->lsc_active_aggregator, 981 buf, sizeof(buf)))); 982 } else { 983 LACP_DPRINTF((NULL, "active aggregator not changed\n")); 984 } 985 LACP_DPRINTF((NULL, "new %s\n", 986 lacp_format_lagid_aggregator(best_la, buf, sizeof(buf)))); 987 988 if (lsc->lsc_active_aggregator != best_la) { 989 lsc->lsc_active_aggregator = best_la; 990 lacp_update_portmap(lsc); 991 if (best_la) { 992 lacp_suppress_distributing(lsc, best_la); 993 } 994 } 995 } 996 997 /* 998 * Updated the inactive portmap array with the new list of ports and 999 * make it live. 1000 */ 1001 static void 1002 lacp_update_portmap(struct lacp_softc *lsc) 1003 { 1004 struct lagg_softc *sc = lsc->lsc_softc; 1005 struct lacp_aggregator *la; 1006 struct lacp_portmap *p; 1007 struct lacp_port *lp; 1008 uint64_t speed; 1009 u_int newmap; 1010 int i; 1011 1012 newmap = lsc->lsc_activemap == 0 ? 1 : 0; 1013 p = &lsc->lsc_pmap[newmap]; 1014 la = lsc->lsc_active_aggregator; 1015 speed = 0; 1016 bzero(p, sizeof(struct lacp_portmap)); 1017 1018 if (la != NULL && la->la_nports > 0) { 1019 p->pm_count = la->la_nports; 1020 i = 0; 1021 TAILQ_FOREACH(lp, &la->la_ports, lp_dist_q) 1022 p->pm_map[i++] = lp; 1023 KASSERT(i == p->pm_count, ("Invalid port count")); 1024 speed = lacp_aggregator_bandwidth(la); 1025 } 1026 sc->sc_ifp->if_baudrate = speed; 1027 1028 /* switch the active portmap over */ 1029 atomic_store_rel_int(&lsc->lsc_activemap, newmap); 1030 LACP_DPRINTF((NULL, "Set table %d with %d ports\n", 1031 lsc->lsc_activemap, 1032 lsc->lsc_pmap[lsc->lsc_activemap].pm_count)); 1033 } 1034 1035 static uint16_t 1036 lacp_compose_key(struct lacp_port *lp) 1037 { 1038 struct lagg_port *lgp = lp->lp_lagg; 1039 struct lagg_softc *sc = lgp->lp_softc; 1040 u_int media = lp->lp_media; 1041 uint16_t key; 1042 1043 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) { 1044 1045 /* 1046 * non-aggregatable links should have unique keys. 1047 * 1048 * XXX this isn't really unique as if_index is 16 bit. 1049 */ 1050 1051 /* bit 0..14: (some bits of) if_index of this port */ 1052 key = lp->lp_ifp->if_index; 1053 /* bit 15: 1 */ 1054 key |= 0x8000; 1055 } else { 1056 u_int subtype = IFM_SUBTYPE(media); 1057 1058 KASSERT(IFM_TYPE(media) == IFM_ETHER, ("invalid media type")); 1059 KASSERT((media & IFM_FDX) != 0, ("aggregating HDX interface")); 1060 1061 /* bit 0..4: IFM_SUBTYPE modulo speed */ 1062 switch (subtype) { 1063 case IFM_10_T: 1064 case IFM_10_2: 1065 case IFM_10_5: 1066 case IFM_10_STP: 1067 case IFM_10_FL: 1068 key = IFM_10_T; 1069 break; 1070 case IFM_100_TX: 1071 case IFM_100_FX: 1072 case IFM_100_T4: 1073 case IFM_100_VG: 1074 case IFM_100_T2: 1075 case IFM_100_T: 1076 key = IFM_100_TX; 1077 break; 1078 case IFM_1000_SX: 1079 case IFM_1000_LX: 1080 case IFM_1000_CX: 1081 case IFM_1000_T: 1082 case IFM_1000_KX: 1083 case IFM_1000_SGMII: 1084 case IFM_1000_CX_SGMII: 1085 key = IFM_1000_SX; 1086 break; 1087 case IFM_10G_LR: 1088 case IFM_10G_SR: 1089 case IFM_10G_CX4: 1090 case IFM_10G_TWINAX: 1091 case IFM_10G_TWINAX_LONG: 1092 case IFM_10G_LRM: 1093 case IFM_10G_T: 1094 case IFM_10G_KX4: 1095 case IFM_10G_KR: 1096 case IFM_10G_CR1: 1097 case IFM_10G_ER: 1098 case IFM_10G_SFI: 1099 key = IFM_10G_LR; 1100 break; 1101 case IFM_20G_KR2: 1102 key = IFM_20G_KR2; 1103 break; 1104 case IFM_2500_KX: 1105 case IFM_2500_T: 1106 key = IFM_2500_KX; 1107 break; 1108 case IFM_5000_T: 1109 key = IFM_5000_T; 1110 break; 1111 case IFM_50G_PCIE: 1112 case IFM_50G_CR2: 1113 case IFM_50G_KR2: 1114 key = IFM_50G_PCIE; 1115 break; 1116 case IFM_56G_R4: 1117 key = IFM_56G_R4; 1118 break; 1119 case IFM_25G_PCIE: 1120 case IFM_25G_CR: 1121 case IFM_25G_KR: 1122 case IFM_25G_SR: 1123 key = IFM_25G_PCIE; 1124 break; 1125 case IFM_40G_CR4: 1126 case IFM_40G_SR4: 1127 case IFM_40G_LR4: 1128 case IFM_40G_XLPPI: 1129 case IFM_40G_KR4: 1130 key = IFM_40G_CR4; 1131 break; 1132 case IFM_100G_CR4: 1133 case IFM_100G_SR4: 1134 case IFM_100G_KR4: 1135 case IFM_100G_LR4: 1136 key = IFM_100G_CR4; 1137 break; 1138 default: 1139 key = subtype; 1140 break; 1141 } 1142 /* bit 5..14: (some bits of) if_index of lagg device */ 1143 key |= 0x7fe0 & ((sc->sc_ifp->if_index) << 5); 1144 /* bit 15: 0 */ 1145 } 1146 return (htons(key)); 1147 } 1148 1149 static void 1150 lacp_aggregator_addref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1151 { 1152 char buf[LACP_LAGIDSTR_MAX+1]; 1153 1154 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1155 __func__, 1156 lacp_format_lagid(&la->la_actor, &la->la_partner, 1157 buf, sizeof(buf)), 1158 la->la_refcnt, la->la_refcnt + 1)); 1159 1160 KASSERT(la->la_refcnt > 0, ("refcount <= 0")); 1161 la->la_refcnt++; 1162 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcount")); 1163 } 1164 1165 static void 1166 lacp_aggregator_delref(struct lacp_softc *lsc, struct lacp_aggregator *la) 1167 { 1168 char buf[LACP_LAGIDSTR_MAX+1]; 1169 1170 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", 1171 __func__, 1172 lacp_format_lagid(&la->la_actor, &la->la_partner, 1173 buf, sizeof(buf)), 1174 la->la_refcnt, la->la_refcnt - 1)); 1175 1176 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcnt")); 1177 la->la_refcnt--; 1178 if (la->la_refcnt > 0) { 1179 return; 1180 } 1181 1182 KASSERT(la->la_refcnt == 0, ("refcount not zero")); 1183 KASSERT(lsc->lsc_active_aggregator != la, ("aggregator active")); 1184 1185 TAILQ_REMOVE(&lsc->lsc_aggregators, la, la_q); 1186 1187 free(la, M_DEVBUF); 1188 } 1189 1190 /* 1191 * lacp_aggregator_get: allocate an aggregator. 1192 */ 1193 1194 static struct lacp_aggregator * 1195 lacp_aggregator_get(struct lacp_softc *lsc, struct lacp_port *lp) 1196 { 1197 struct lacp_aggregator *la; 1198 1199 la = malloc(sizeof(*la), M_DEVBUF, M_NOWAIT); 1200 if (la) { 1201 la->la_refcnt = 1; 1202 la->la_nports = 0; 1203 TAILQ_INIT(&la->la_ports); 1204 la->la_pending = 0; 1205 TAILQ_INSERT_TAIL(&lsc->lsc_aggregators, la, la_q); 1206 } 1207 1208 return (la); 1209 } 1210 1211 /* 1212 * lacp_fill_aggregator_id: setup a newly allocated aggregator from a port. 1213 */ 1214 1215 static void 1216 lacp_fill_aggregator_id(struct lacp_aggregator *la, const struct lacp_port *lp) 1217 { 1218 lacp_fill_aggregator_id_peer(&la->la_partner, &lp->lp_partner); 1219 lacp_fill_aggregator_id_peer(&la->la_actor, &lp->lp_actor); 1220 1221 la->la_actor.lip_state = lp->lp_state & LACP_STATE_AGGREGATION; 1222 } 1223 1224 static void 1225 lacp_fill_aggregator_id_peer(struct lacp_peerinfo *lpi_aggr, 1226 const struct lacp_peerinfo *lpi_port) 1227 { 1228 memset(lpi_aggr, 0, sizeof(*lpi_aggr)); 1229 lpi_aggr->lip_systemid = lpi_port->lip_systemid; 1230 lpi_aggr->lip_key = lpi_port->lip_key; 1231 } 1232 1233 /* 1234 * lacp_aggregator_is_compatible: check if a port can join to an aggregator. 1235 */ 1236 1237 static int 1238 lacp_aggregator_is_compatible(const struct lacp_aggregator *la, 1239 const struct lacp_port *lp) 1240 { 1241 if (!(lp->lp_state & LACP_STATE_AGGREGATION) || 1242 !(lp->lp_partner.lip_state & LACP_STATE_AGGREGATION)) { 1243 return (0); 1244 } 1245 1246 if (!(la->la_actor.lip_state & LACP_STATE_AGGREGATION)) { 1247 return (0); 1248 } 1249 1250 if (!lacp_peerinfo_is_compatible(&la->la_partner, &lp->lp_partner)) { 1251 return (0); 1252 } 1253 1254 if (!lacp_peerinfo_is_compatible(&la->la_actor, &lp->lp_actor)) { 1255 return (0); 1256 } 1257 1258 return (1); 1259 } 1260 1261 static int 1262 lacp_peerinfo_is_compatible(const struct lacp_peerinfo *a, 1263 const struct lacp_peerinfo *b) 1264 { 1265 if (memcmp(&a->lip_systemid, &b->lip_systemid, 1266 sizeof(a->lip_systemid))) { 1267 return (0); 1268 } 1269 1270 if (memcmp(&a->lip_key, &b->lip_key, sizeof(a->lip_key))) { 1271 return (0); 1272 } 1273 1274 return (1); 1275 } 1276 1277 static void 1278 lacp_port_enable(struct lacp_port *lp) 1279 { 1280 lp->lp_state |= LACP_STATE_AGGREGATION; 1281 } 1282 1283 static void 1284 lacp_port_disable(struct lacp_port *lp) 1285 { 1286 lacp_set_mux(lp, LACP_MUX_DETACHED); 1287 1288 lp->lp_state &= ~LACP_STATE_AGGREGATION; 1289 lp->lp_selected = LACP_UNSELECTED; 1290 lacp_sm_rx_record_default(lp); 1291 lp->lp_partner.lip_state &= ~LACP_STATE_AGGREGATION; 1292 lp->lp_state &= ~LACP_STATE_EXPIRED; 1293 } 1294 1295 /* 1296 * lacp_select: select an aggregator. create one if necessary. 1297 */ 1298 static void 1299 lacp_select(struct lacp_port *lp) 1300 { 1301 struct lacp_softc *lsc = lp->lp_lsc; 1302 struct lacp_aggregator *la; 1303 char buf[LACP_LAGIDSTR_MAX+1]; 1304 1305 if (lp->lp_aggregator) { 1306 return; 1307 } 1308 1309 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1310 ("timer_wait_while still active")); 1311 1312 LACP_DPRINTF((lp, "port lagid=%s\n", 1313 lacp_format_lagid(&lp->lp_actor, &lp->lp_partner, 1314 buf, sizeof(buf)))); 1315 1316 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 1317 if (lacp_aggregator_is_compatible(la, lp)) { 1318 break; 1319 } 1320 } 1321 1322 if (la == NULL) { 1323 la = lacp_aggregator_get(lsc, lp); 1324 if (la == NULL) { 1325 LACP_DPRINTF((lp, "aggregator creation failed\n")); 1326 1327 /* 1328 * will retry on the next tick. 1329 */ 1330 1331 return; 1332 } 1333 lacp_fill_aggregator_id(la, lp); 1334 LACP_DPRINTF((lp, "aggregator created\n")); 1335 } else { 1336 LACP_DPRINTF((lp, "compatible aggregator found\n")); 1337 if (la->la_refcnt == LACP_MAX_PORTS) 1338 return; 1339 lacp_aggregator_addref(lsc, la); 1340 } 1341 1342 LACP_DPRINTF((lp, "aggregator lagid=%s\n", 1343 lacp_format_lagid(&la->la_actor, &la->la_partner, 1344 buf, sizeof(buf)))); 1345 1346 lp->lp_aggregator = la; 1347 lp->lp_selected = LACP_SELECTED; 1348 } 1349 1350 /* 1351 * lacp_unselect: finish unselect/detach process. 1352 */ 1353 1354 static void 1355 lacp_unselect(struct lacp_port *lp) 1356 { 1357 struct lacp_softc *lsc = lp->lp_lsc; 1358 struct lacp_aggregator *la = lp->lp_aggregator; 1359 1360 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1361 ("timer_wait_while still active")); 1362 1363 if (la == NULL) { 1364 return; 1365 } 1366 1367 lp->lp_aggregator = NULL; 1368 lacp_aggregator_delref(lsc, la); 1369 } 1370 1371 /* mux machine */ 1372 1373 static void 1374 lacp_sm_mux(struct lacp_port *lp) 1375 { 1376 struct lagg_port *lgp = lp->lp_lagg; 1377 struct lagg_softc *sc = lgp->lp_softc; 1378 enum lacp_mux_state new_state; 1379 boolean_t p_sync = 1380 (lp->lp_partner.lip_state & LACP_STATE_SYNC) != 0; 1381 boolean_t p_collecting = 1382 (lp->lp_partner.lip_state & LACP_STATE_COLLECTING) != 0; 1383 enum lacp_selected selected = lp->lp_selected; 1384 struct lacp_aggregator *la; 1385 1386 if (V_lacp_debug > 1) 1387 lacp_dprintf(lp, "%s: state= 0x%x, selected= 0x%x, " 1388 "p_sync= 0x%x, p_collecting= 0x%x\n", __func__, 1389 lp->lp_mux_state, selected, p_sync, p_collecting); 1390 1391 re_eval: 1392 la = lp->lp_aggregator; 1393 KASSERT(lp->lp_mux_state == LACP_MUX_DETACHED || la != NULL, 1394 ("MUX not detached")); 1395 new_state = lp->lp_mux_state; 1396 switch (lp->lp_mux_state) { 1397 case LACP_MUX_DETACHED: 1398 if (selected != LACP_UNSELECTED) { 1399 new_state = LACP_MUX_WAITING; 1400 } 1401 break; 1402 case LACP_MUX_WAITING: 1403 KASSERT(la->la_pending > 0 || 1404 !LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), 1405 ("timer_wait_while still active")); 1406 if (selected == LACP_SELECTED && la->la_pending == 0) { 1407 new_state = LACP_MUX_ATTACHED; 1408 } else if (selected == LACP_UNSELECTED) { 1409 new_state = LACP_MUX_DETACHED; 1410 } 1411 break; 1412 case LACP_MUX_ATTACHED: 1413 if (selected == LACP_SELECTED && p_sync) { 1414 new_state = LACP_MUX_COLLECTING; 1415 } else if (selected != LACP_SELECTED) { 1416 new_state = LACP_MUX_DETACHED; 1417 } 1418 break; 1419 case LACP_MUX_COLLECTING: 1420 if (selected == LACP_SELECTED && p_sync && p_collecting) { 1421 new_state = LACP_MUX_DISTRIBUTING; 1422 } else if (selected != LACP_SELECTED || !p_sync) { 1423 new_state = LACP_MUX_ATTACHED; 1424 } 1425 break; 1426 case LACP_MUX_DISTRIBUTING: 1427 if (selected != LACP_SELECTED || !p_sync || !p_collecting) { 1428 new_state = LACP_MUX_COLLECTING; 1429 lacp_dprintf(lp, "Interface stopped DISTRIBUTING, possible flapping\n"); 1430 sc->sc_flapping++; 1431 } 1432 break; 1433 default: 1434 panic("%s: unknown state", __func__); 1435 } 1436 1437 if (lp->lp_mux_state == new_state) { 1438 return; 1439 } 1440 1441 lacp_set_mux(lp, new_state); 1442 goto re_eval; 1443 } 1444 1445 static void 1446 lacp_set_mux(struct lacp_port *lp, enum lacp_mux_state new_state) 1447 { 1448 struct lacp_aggregator *la = lp->lp_aggregator; 1449 1450 if (lp->lp_mux_state == new_state) { 1451 return; 1452 } 1453 1454 switch (new_state) { 1455 case LACP_MUX_DETACHED: 1456 lp->lp_state &= ~LACP_STATE_SYNC; 1457 lacp_disable_distributing(lp); 1458 lacp_disable_collecting(lp); 1459 lacp_sm_assert_ntt(lp); 1460 /* cancel timer */ 1461 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE)) { 1462 KASSERT(la->la_pending > 0, 1463 ("timer_wait_while not active")); 1464 la->la_pending--; 1465 } 1466 LACP_TIMER_DISARM(lp, LACP_TIMER_WAIT_WHILE); 1467 lacp_unselect(lp); 1468 break; 1469 case LACP_MUX_WAITING: 1470 LACP_TIMER_ARM(lp, LACP_TIMER_WAIT_WHILE, 1471 LACP_AGGREGATE_WAIT_TIME); 1472 la->la_pending++; 1473 break; 1474 case LACP_MUX_ATTACHED: 1475 lp->lp_state |= LACP_STATE_SYNC; 1476 lacp_disable_collecting(lp); 1477 lacp_sm_assert_ntt(lp); 1478 break; 1479 case LACP_MUX_COLLECTING: 1480 lacp_enable_collecting(lp); 1481 lacp_disable_distributing(lp); 1482 lacp_sm_assert_ntt(lp); 1483 break; 1484 case LACP_MUX_DISTRIBUTING: 1485 lacp_enable_distributing(lp); 1486 break; 1487 default: 1488 panic("%s: unknown state", __func__); 1489 } 1490 1491 LACP_DPRINTF((lp, "mux_state %d -> %d\n", lp->lp_mux_state, new_state)); 1492 1493 lp->lp_mux_state = new_state; 1494 } 1495 1496 static void 1497 lacp_sm_mux_timer(struct lacp_port *lp) 1498 { 1499 struct lacp_aggregator *la = lp->lp_aggregator; 1500 char buf[LACP_LAGIDSTR_MAX+1]; 1501 1502 KASSERT(la->la_pending > 0, ("no pending event")); 1503 1504 LACP_DPRINTF((lp, "%s: aggregator %s, pending %d -> %d\n", __func__, 1505 lacp_format_lagid(&la->la_actor, &la->la_partner, 1506 buf, sizeof(buf)), 1507 la->la_pending, la->la_pending - 1)); 1508 1509 la->la_pending--; 1510 } 1511 1512 /* periodic transmit machine */ 1513 1514 static void 1515 lacp_sm_ptx_update_timeout(struct lacp_port *lp, uint8_t oldpstate) 1516 { 1517 if (LACP_STATE_EQ(oldpstate, lp->lp_partner.lip_state, 1518 LACP_STATE_TIMEOUT)) { 1519 return; 1520 } 1521 1522 LACP_DPRINTF((lp, "partner timeout changed\n")); 1523 1524 /* 1525 * FAST_PERIODIC -> SLOW_PERIODIC 1526 * or 1527 * SLOW_PERIODIC (-> PERIODIC_TX) -> FAST_PERIODIC 1528 * 1529 * let lacp_sm_ptx_tx_schedule to update timeout. 1530 */ 1531 1532 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1533 1534 /* 1535 * if timeout has been shortened, assert NTT. 1536 */ 1537 1538 if ((lp->lp_partner.lip_state & LACP_STATE_TIMEOUT)) { 1539 lacp_sm_assert_ntt(lp); 1540 } 1541 } 1542 1543 static void 1544 lacp_sm_ptx_tx_schedule(struct lacp_port *lp) 1545 { 1546 int timeout; 1547 1548 if (!(lp->lp_state & LACP_STATE_ACTIVITY) && 1549 !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) { 1550 1551 /* 1552 * NO_PERIODIC 1553 */ 1554 1555 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); 1556 return; 1557 } 1558 1559 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_PERIODIC)) { 1560 return; 1561 } 1562 1563 timeout = (lp->lp_partner.lip_state & LACP_STATE_TIMEOUT) ? 1564 LACP_FAST_PERIODIC_TIME : LACP_SLOW_PERIODIC_TIME; 1565 1566 LACP_TIMER_ARM(lp, LACP_TIMER_PERIODIC, timeout); 1567 } 1568 1569 static void 1570 lacp_sm_ptx_timer(struct lacp_port *lp) 1571 { 1572 lacp_sm_assert_ntt(lp); 1573 } 1574 1575 static void 1576 lacp_sm_rx(struct lacp_port *lp, const struct lacpdu *du) 1577 { 1578 int timeout; 1579 1580 /* 1581 * check LACP_DISABLED first 1582 */ 1583 1584 if (!(lp->lp_state & LACP_STATE_AGGREGATION)) { 1585 return; 1586 } 1587 1588 /* 1589 * check loopback condition. 1590 */ 1591 1592 if (!lacp_compare_systemid(&du->ldu_actor.lip_systemid, 1593 &lp->lp_actor.lip_systemid)) { 1594 return; 1595 } 1596 1597 /* 1598 * EXPIRED, DEFAULTED, CURRENT -> CURRENT 1599 */ 1600 1601 lacp_sm_rx_update_selected(lp, du); 1602 lacp_sm_rx_update_ntt(lp, du); 1603 lacp_sm_rx_record_pdu(lp, du); 1604 1605 timeout = (lp->lp_state & LACP_STATE_TIMEOUT) ? 1606 LACP_SHORT_TIMEOUT_TIME : LACP_LONG_TIMEOUT_TIME; 1607 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, timeout); 1608 1609 lp->lp_state &= ~LACP_STATE_EXPIRED; 1610 1611 /* 1612 * kick transmit machine without waiting the next tick. 1613 */ 1614 1615 lacp_sm_tx(lp); 1616 } 1617 1618 static void 1619 lacp_sm_rx_set_expired(struct lacp_port *lp) 1620 { 1621 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1622 lp->lp_partner.lip_state |= LACP_STATE_TIMEOUT; 1623 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, LACP_SHORT_TIMEOUT_TIME); 1624 lp->lp_state |= LACP_STATE_EXPIRED; 1625 } 1626 1627 static void 1628 lacp_sm_rx_timer(struct lacp_port *lp) 1629 { 1630 if ((lp->lp_state & LACP_STATE_EXPIRED) == 0) { 1631 /* CURRENT -> EXPIRED */ 1632 LACP_DPRINTF((lp, "%s: CURRENT -> EXPIRED\n", __func__)); 1633 lacp_sm_rx_set_expired(lp); 1634 } else { 1635 /* EXPIRED -> DEFAULTED */ 1636 LACP_DPRINTF((lp, "%s: EXPIRED -> DEFAULTED\n", __func__)); 1637 lacp_sm_rx_update_default_selected(lp); 1638 lacp_sm_rx_record_default(lp); 1639 lp->lp_state &= ~LACP_STATE_EXPIRED; 1640 } 1641 } 1642 1643 static void 1644 lacp_sm_rx_record_pdu(struct lacp_port *lp, const struct lacpdu *du) 1645 { 1646 boolean_t active; 1647 uint8_t oldpstate; 1648 char buf[LACP_STATESTR_MAX+1]; 1649 1650 LACP_TRACE(lp); 1651 1652 oldpstate = lp->lp_partner.lip_state; 1653 1654 active = (du->ldu_actor.lip_state & LACP_STATE_ACTIVITY) 1655 || ((lp->lp_state & LACP_STATE_ACTIVITY) && 1656 (du->ldu_partner.lip_state & LACP_STATE_ACTIVITY)); 1657 1658 lp->lp_partner = du->ldu_actor; 1659 if (active && 1660 ((LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1661 LACP_STATE_AGGREGATION) && 1662 !lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner)) 1663 || (du->ldu_partner.lip_state & LACP_STATE_AGGREGATION) == 0)) { 1664 /* XXX nothing? */ 1665 } else { 1666 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; 1667 } 1668 1669 lp->lp_state &= ~LACP_STATE_DEFAULTED; 1670 1671 if (oldpstate != lp->lp_partner.lip_state) { 1672 LACP_DPRINTF((lp, "old pstate %s\n", 1673 lacp_format_state(oldpstate, buf, sizeof(buf)))); 1674 LACP_DPRINTF((lp, "new pstate %s\n", 1675 lacp_format_state(lp->lp_partner.lip_state, buf, 1676 sizeof(buf)))); 1677 } 1678 1679 /* XXX Hack, still need to implement 5.4.9 para 2,3,4 */ 1680 if (lp->lp_lsc->lsc_strict_mode) 1681 lp->lp_partner.lip_state |= LACP_STATE_SYNC; 1682 1683 lacp_sm_ptx_update_timeout(lp, oldpstate); 1684 } 1685 1686 static void 1687 lacp_sm_rx_update_ntt(struct lacp_port *lp, const struct lacpdu *du) 1688 { 1689 1690 LACP_TRACE(lp); 1691 1692 if (lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner) || 1693 !LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, 1694 LACP_STATE_ACTIVITY | LACP_STATE_SYNC | LACP_STATE_AGGREGATION)) { 1695 LACP_DPRINTF((lp, "%s: assert ntt\n", __func__)); 1696 lacp_sm_assert_ntt(lp); 1697 } 1698 } 1699 1700 static void 1701 lacp_sm_rx_record_default(struct lacp_port *lp) 1702 { 1703 uint8_t oldpstate; 1704 1705 LACP_TRACE(lp); 1706 1707 oldpstate = lp->lp_partner.lip_state; 1708 if (lp->lp_lsc->lsc_strict_mode) 1709 lp->lp_partner = lacp_partner_admin_strict; 1710 else 1711 lp->lp_partner = lacp_partner_admin_optimistic; 1712 lp->lp_state |= LACP_STATE_DEFAULTED; 1713 lacp_sm_ptx_update_timeout(lp, oldpstate); 1714 } 1715 1716 static void 1717 lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *lp, 1718 const struct lacp_peerinfo *info) 1719 { 1720 1721 LACP_TRACE(lp); 1722 1723 if (lacp_compare_peerinfo(&lp->lp_partner, info) || 1724 !LACP_STATE_EQ(lp->lp_partner.lip_state, info->lip_state, 1725 LACP_STATE_AGGREGATION)) { 1726 lp->lp_selected = LACP_UNSELECTED; 1727 /* mux machine will clean up lp->lp_aggregator */ 1728 } 1729 } 1730 1731 static void 1732 lacp_sm_rx_update_selected(struct lacp_port *lp, const struct lacpdu *du) 1733 { 1734 1735 LACP_TRACE(lp); 1736 1737 lacp_sm_rx_update_selected_from_peerinfo(lp, &du->ldu_actor); 1738 } 1739 1740 static void 1741 lacp_sm_rx_update_default_selected(struct lacp_port *lp) 1742 { 1743 1744 LACP_TRACE(lp); 1745 1746 if (lp->lp_lsc->lsc_strict_mode) 1747 lacp_sm_rx_update_selected_from_peerinfo(lp, 1748 &lacp_partner_admin_strict); 1749 else 1750 lacp_sm_rx_update_selected_from_peerinfo(lp, 1751 &lacp_partner_admin_optimistic); 1752 } 1753 1754 /* transmit machine */ 1755 1756 static void 1757 lacp_sm_tx(struct lacp_port *lp) 1758 { 1759 int error = 0; 1760 1761 if (!(lp->lp_state & LACP_STATE_AGGREGATION) 1762 #if 1 1763 || (!(lp->lp_state & LACP_STATE_ACTIVITY) 1764 && !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) 1765 #endif 1766 ) { 1767 lp->lp_flags &= ~LACP_PORT_NTT; 1768 } 1769 1770 if (!(lp->lp_flags & LACP_PORT_NTT)) { 1771 return; 1772 } 1773 1774 /* Rate limit to 3 PDUs per LACP_FAST_PERIODIC_TIME */ 1775 if (ppsratecheck(&lp->lp_last_lacpdu, &lp->lp_lacpdu_sent, 1776 (3 / LACP_FAST_PERIODIC_TIME)) == 0) { 1777 LACP_DPRINTF((lp, "rate limited pdu\n")); 1778 return; 1779 } 1780 1781 if (((1 << lp->lp_ifp->if_dunit) & lp->lp_lsc->lsc_debug.lsc_tx_test) == 0) { 1782 error = lacp_xmit_lacpdu(lp); 1783 } else { 1784 LACP_TPRINTF((lp, "Dropping TX PDU\n")); 1785 } 1786 1787 if (error == 0) { 1788 lp->lp_flags &= ~LACP_PORT_NTT; 1789 } else { 1790 LACP_DPRINTF((lp, "lacpdu transmit failure, error %d\n", 1791 error)); 1792 } 1793 } 1794 1795 static void 1796 lacp_sm_assert_ntt(struct lacp_port *lp) 1797 { 1798 1799 lp->lp_flags |= LACP_PORT_NTT; 1800 } 1801 1802 static void 1803 lacp_run_timers(struct lacp_port *lp) 1804 { 1805 int i; 1806 1807 for (i = 0; i < LACP_NTIMER; i++) { 1808 KASSERT(lp->lp_timer[i] >= 0, 1809 ("invalid timer value %d", lp->lp_timer[i])); 1810 if (lp->lp_timer[i] == 0) { 1811 continue; 1812 } else if (--lp->lp_timer[i] <= 0) { 1813 if (lacp_timer_funcs[i]) { 1814 (*lacp_timer_funcs[i])(lp); 1815 } 1816 } 1817 } 1818 } 1819 1820 int 1821 lacp_marker_input(struct lacp_port *lp, struct mbuf *m) 1822 { 1823 struct lacp_softc *lsc = lp->lp_lsc; 1824 struct lagg_port *lgp = lp->lp_lagg; 1825 struct lacp_port *lp2; 1826 struct markerdu *mdu; 1827 int error = 0; 1828 int pending = 0; 1829 1830 if (m->m_pkthdr.len != sizeof(*mdu)) { 1831 goto bad; 1832 } 1833 1834 if ((m->m_flags & M_MCAST) == 0) { 1835 goto bad; 1836 } 1837 1838 if (m->m_len < sizeof(*mdu)) { 1839 m = m_pullup(m, sizeof(*mdu)); 1840 if (m == NULL) { 1841 return (ENOMEM); 1842 } 1843 } 1844 1845 mdu = mtod(m, struct markerdu *); 1846 1847 if (memcmp(&mdu->mdu_eh.ether_dhost, 1848 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { 1849 goto bad; 1850 } 1851 1852 if (mdu->mdu_sph.sph_version != 1) { 1853 goto bad; 1854 } 1855 1856 switch (mdu->mdu_tlv.tlv_type) { 1857 case MARKER_TYPE_INFO: 1858 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 1859 marker_info_tlv_template, TRUE)) { 1860 goto bad; 1861 } 1862 mdu->mdu_tlv.tlv_type = MARKER_TYPE_RESPONSE; 1863 memcpy(&mdu->mdu_eh.ether_dhost, 1864 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN); 1865 memcpy(&mdu->mdu_eh.ether_shost, 1866 lgp->lp_lladdr, ETHER_ADDR_LEN); 1867 error = lagg_enqueue(lp->lp_ifp, m); 1868 break; 1869 1870 case MARKER_TYPE_RESPONSE: 1871 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, 1872 marker_response_tlv_template, TRUE)) { 1873 goto bad; 1874 } 1875 LACP_DPRINTF((lp, "marker response, port=%u, sys=%6D, id=%u\n", 1876 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, 1877 ":", ntohl(mdu->mdu_info.mi_rq_xid))); 1878 1879 /* Verify that it is the last marker we sent out */ 1880 if (memcmp(&mdu->mdu_info, &lp->lp_marker, 1881 sizeof(struct lacp_markerinfo))) 1882 goto bad; 1883 1884 LACP_LOCK(lsc); 1885 lp->lp_flags &= ~LACP_PORT_MARK; 1886 1887 if (lsc->lsc_suppress_distributing) { 1888 /* Check if any ports are waiting for a response */ 1889 LIST_FOREACH(lp2, &lsc->lsc_ports, lp_next) { 1890 if (lp2->lp_flags & LACP_PORT_MARK) { 1891 pending = 1; 1892 break; 1893 } 1894 } 1895 1896 if (pending == 0) { 1897 /* All interface queues are clear */ 1898 LACP_DPRINTF((NULL, "queue flush complete\n")); 1899 lsc->lsc_suppress_distributing = FALSE; 1900 } 1901 } 1902 LACP_UNLOCK(lsc); 1903 m_freem(m); 1904 break; 1905 1906 default: 1907 goto bad; 1908 } 1909 1910 return (error); 1911 1912 bad: 1913 LACP_DPRINTF((lp, "bad marker frame\n")); 1914 m_freem(m); 1915 return (EINVAL); 1916 } 1917 1918 static int 1919 tlv_check(const void *p, size_t size, const struct tlvhdr *tlv, 1920 const struct tlv_template *tmpl, boolean_t check_type) 1921 { 1922 while (/* CONSTCOND */ 1) { 1923 if ((const char *)tlv - (const char *)p + sizeof(*tlv) > size) { 1924 return (EINVAL); 1925 } 1926 if ((check_type && tlv->tlv_type != tmpl->tmpl_type) || 1927 tlv->tlv_length != tmpl->tmpl_length) { 1928 return (EINVAL); 1929 } 1930 if (tmpl->tmpl_type == 0) { 1931 break; 1932 } 1933 tlv = (const struct tlvhdr *) 1934 ((const char *)tlv + tlv->tlv_length); 1935 tmpl++; 1936 } 1937 1938 return (0); 1939 } 1940 1941 /* Debugging */ 1942 const char * 1943 lacp_format_mac(const uint8_t *mac, char *buf, size_t buflen) 1944 { 1945 snprintf(buf, buflen, "%02X-%02X-%02X-%02X-%02X-%02X", 1946 (int)mac[0], 1947 (int)mac[1], 1948 (int)mac[2], 1949 (int)mac[3], 1950 (int)mac[4], 1951 (int)mac[5]); 1952 1953 return (buf); 1954 } 1955 1956 const char * 1957 lacp_format_systemid(const struct lacp_systemid *sysid, 1958 char *buf, size_t buflen) 1959 { 1960 char macbuf[LACP_MACSTR_MAX+1]; 1961 1962 snprintf(buf, buflen, "%04X,%s", 1963 ntohs(sysid->lsi_prio), 1964 lacp_format_mac(sysid->lsi_mac, macbuf, sizeof(macbuf))); 1965 1966 return (buf); 1967 } 1968 1969 const char * 1970 lacp_format_portid(const struct lacp_portid *portid, char *buf, size_t buflen) 1971 { 1972 snprintf(buf, buflen, "%04X,%04X", 1973 ntohs(portid->lpi_prio), 1974 ntohs(portid->lpi_portno)); 1975 1976 return (buf); 1977 } 1978 1979 const char * 1980 lacp_format_partner(const struct lacp_peerinfo *peer, char *buf, size_t buflen) 1981 { 1982 char sysid[LACP_SYSTEMIDSTR_MAX+1]; 1983 char portid[LACP_PORTIDSTR_MAX+1]; 1984 1985 snprintf(buf, buflen, "(%s,%04X,%s)", 1986 lacp_format_systemid(&peer->lip_systemid, sysid, sizeof(sysid)), 1987 ntohs(peer->lip_key), 1988 lacp_format_portid(&peer->lip_portid, portid, sizeof(portid))); 1989 1990 return (buf); 1991 } 1992 1993 const char * 1994 lacp_format_lagid(const struct lacp_peerinfo *a, 1995 const struct lacp_peerinfo *b, char *buf, size_t buflen) 1996 { 1997 char astr[LACP_PARTNERSTR_MAX+1]; 1998 char bstr[LACP_PARTNERSTR_MAX+1]; 1999 2000 #if 0 2001 /* 2002 * there's a convention to display small numbered peer 2003 * in the left. 2004 */ 2005 2006 if (lacp_compare_peerinfo(a, b) > 0) { 2007 const struct lacp_peerinfo *t; 2008 2009 t = a; 2010 a = b; 2011 b = t; 2012 } 2013 #endif 2014 2015 snprintf(buf, buflen, "[%s,%s]", 2016 lacp_format_partner(a, astr, sizeof(astr)), 2017 lacp_format_partner(b, bstr, sizeof(bstr))); 2018 2019 return (buf); 2020 } 2021 2022 const char * 2023 lacp_format_lagid_aggregator(const struct lacp_aggregator *la, 2024 char *buf, size_t buflen) 2025 { 2026 if (la == NULL) { 2027 return ("(none)"); 2028 } 2029 2030 return (lacp_format_lagid(&la->la_actor, &la->la_partner, buf, buflen)); 2031 } 2032 2033 const char * 2034 lacp_format_state(uint8_t state, char *buf, size_t buflen) 2035 { 2036 snprintf(buf, buflen, "%b", state, LACP_STATE_BITS); 2037 return (buf); 2038 } 2039 2040 static void 2041 lacp_dump_lacpdu(const struct lacpdu *du) 2042 { 2043 char buf[LACP_PARTNERSTR_MAX+1]; 2044 char buf2[LACP_STATESTR_MAX+1]; 2045 2046 printf("actor=%s\n", 2047 lacp_format_partner(&du->ldu_actor, buf, sizeof(buf))); 2048 printf("actor.state=%s\n", 2049 lacp_format_state(du->ldu_actor.lip_state, buf2, sizeof(buf2))); 2050 printf("partner=%s\n", 2051 lacp_format_partner(&du->ldu_partner, buf, sizeof(buf))); 2052 printf("partner.state=%s\n", 2053 lacp_format_state(du->ldu_partner.lip_state, buf2, sizeof(buf2))); 2054 2055 printf("maxdelay=%d\n", ntohs(du->ldu_collector.lci_maxdelay)); 2056 } 2057 2058 static void 2059 lacp_dprintf(const struct lacp_port *lp, const char *fmt, ...) 2060 { 2061 va_list va; 2062 2063 if (lp) { 2064 printf("%s: ", lp->lp_ifp->if_xname); 2065 } 2066 2067 va_start(va, fmt); 2068 vprintf(fmt, va); 2069 va_end(va); 2070 }
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