if_lagg_lacp.c revision 1.3
1 /* $NetBSD: if_lagg_lacp.c,v 1.3 2021/06/30 06:39:47 yamaguchi Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-2-Clause-NetBSD 5 * 6 * Copyright (c)2005 YAMAMOTO Takashi, 7 * Copyright (c)2008 Andrew Thompson <thompsa (at) FreeBSD.org> 8 * Copyright (c)2021 Internet Initiative Japan, Inc. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: if_lagg_lacp.c,v 1.3 2021/06/30 06:39:47 yamaguchi Exp $"); 35 36 #ifdef _KERNEL_OPT 37 #include "opt_lagg.h" 38 #endif 39 40 #include <sys/param.h> 41 #include <sys/types.h> 42 43 #include <sys/evcnt.h> 44 #include <sys/kmem.h> 45 #include <sys/pslist.h> 46 #include <sys/sysctl.h> 47 #include <sys/syslog.h> 48 #include <sys/workqueue.h> 49 50 #include <net/if.h> 51 #include <net/if_dl.h> 52 #include <net/if_ether.h> 53 #include <net/if_media.h> 54 55 #include <net/lagg/if_lagg.h> 56 #include <net/lagg/if_laggproto.h> 57 #include <net/lagg/if_lagg_lacp.h> 58 59 #define LACP_SYSTEMIDSTR_LEN 32 60 61 enum { 62 LACP_TIMER_CURRENT_WHILE = 0, 63 LACP_TIMER_PERIODIC, 64 LACP_TIMER_WAIT_WHILE, 65 LACP_NTIMER 66 }; 67 68 enum { 69 LACP_PTIMER_DISTRIBUTING = 0, 70 LACP_NPTIMER 71 }; 72 73 enum lacp_selected { 74 LACP_UNSELECTED, 75 LACP_STANDBY, 76 LACP_SELECTED, 77 }; 78 79 enum lacp_mux_state { 80 LACP_MUX_DETACHED, 81 LACP_MUX_WAITING, 82 LACP_MUX_ATTACHED, 83 LACP_MUX_COLLECTING, 84 LACP_MUX_DISTRIBUTING, 85 LACP_MUX_INIT, 86 }; 87 88 struct lacp_aggregator_systemid { 89 uint16_t sid_prio; 90 uint16_t sid_key; 91 uint8_t sid_mac[LACP_MAC_LEN]; 92 }; 93 94 struct lacp_aggregator { 95 TAILQ_ENTRY(lacp_aggregator) 96 la_q; 97 LIST_HEAD(, lacp_port) 98 la_ports; 99 ssize_t la_attached_port; 100 101 struct lacp_aggregator_systemid 102 la_sid; 103 }; 104 105 struct lacp_portinfo { 106 uint8_t lpi_state; 107 uint16_t lpi_portno; 108 #define LACP_PORTNO_NONE 0 109 uint16_t lpi_portprio; 110 }; 111 112 struct lacp_port { 113 struct lagg_port *lp_laggport; 114 int lp_timer[LACP_NTIMER]; 115 uint32_t lp_marker_xid; 116 enum lacp_selected lp_selected; 117 enum lacp_mux_state lp_mux_state; 118 119 struct lacp_portinfo lp_actor; 120 struct lacp_portinfo lp_partner; 121 struct lacp_aggregator *lp_aggregator; 122 struct lacp_aggregator_systemid 123 lp_aggregator_sidbuf; 124 uint32_t lp_media; 125 int lp_pending; 126 LIST_ENTRY(lacp_port) lp_entry_la; 127 struct timeval lp_last_lacpdu; 128 int lp_lacpdu_sent; 129 bool lp_collector; 130 131 unsigned int lp_flags; 132 #define LACP_PORT_NTT __BIT(0) 133 #define LACP_PORT_MARK __BIT(1) 134 135 struct lagg_work lp_work_smtx; 136 struct lagg_work lp_work_marker; 137 }; 138 139 struct lacp_portmap { 140 size_t pm_count; 141 struct lagg_port *pm_ports[LACP_MAX_PORTS]; 142 }; 143 144 struct lacp_softc { 145 struct lagg_softc *lsc_softc; 146 kmutex_t lsc_lock; 147 pserialize_t lsc_psz; 148 bool lsc_running; 149 bool lsc_suppress_distributing; 150 int lsc_timer[LACP_NPTIMER]; 151 uint8_t lsc_system_mac[LACP_MAC_LEN]; 152 uint16_t lsc_system_prio; 153 uint16_t lsc_key; 154 size_t lsc_max_ports; 155 size_t lsc_activemap; 156 struct lacp_portmap lsc_portmaps[2]; /* active & idle */ 157 struct lacp_aggregator *lsc_aggregator; 158 TAILQ_HEAD(, lacp_aggregator) 159 lsc_aggregators; 160 struct workqueue *lsc_workq; 161 struct lagg_work lsc_work_tick; 162 callout_t lsc_tick; 163 164 char lsc_evgroup[32]; 165 struct evcnt lsc_mgethdr_failed; 166 struct evcnt lsc_mpullup_failed; 167 struct evcnt lsc_badlacpdu; 168 struct evcnt lsc_badmarkerdu; 169 170 bool lsc_optimistic; 171 bool lsc_stop_lacpdu; 172 bool lsc_dump_du; 173 bool lsc_multi_linkspeed; 174 }; 175 176 /* 177 * Locking notes: 178 * - Items in struct lacp_softc are protected by 179 * lsc_lock (an adaptive mutex) 180 * - lsc_activemap is protected by pserialize (lsc_psz) 181 * - Items of struct lagg_port in lsc_portmaps are protected by 182 * protected by both pserialize (lsc_psz) and psref (lp_psref) 183 * - Updates for lsc_activemap and lsc_portmaps is serialized by 184 * sc_lock in struct lagg_softc 185 * - Other locking notes are described in if_laggproto.h 186 */ 187 188 static void lacp_dprintf(const struct lacp_softc *, 189 const struct lacp_port *, const char *, ...) 190 __attribute__((__format__(__printf__, 3, 4))); 191 192 #ifdef LACP_DEBUG 193 #define LACP_DPRINTF(a) do { lacp_dprintf a; } while (/*CONSTCOND*/ 0) 194 #define LACP_PEERINFO_IDSTR(_pi, _b, _bs) \ 195 lacp_peerinfo_idstr(_pi, _b, _bs) 196 #define LACP_STATE_STR(_s, _b, _bs) lacp_state_str(_s, _b, _bs) 197 #define LACP_AGGREGATOR_STR(_a, _b, _bs) \ 198 lacp_aggregator_str(_a, _b, _bs) 199 #define __LACPDEBUGUSED 200 #else 201 #define LACP_DPRINTF(a) __nothing 202 #define LACP_PEERINFO_IDSTR(_pi, _b, _bs) __nothing 203 #define LACP_STATE_STR(_s, _b, _bs) __nothing 204 #define LACP_AGGREGATOR_STR(_a, _b, _bs) __nothing 205 #define __LACPDEBUGUSED __unused 206 #endif 207 208 #define LACP_LOCK(_sc) mutex_enter(&(_sc)->lsc_lock) 209 #define LACP_UNLOCK(_sc) mutex_exit(&(_sc)->lsc_lock) 210 #define LACP_LOCKED(_sc) mutex_owned(&(_sc)->lsc_lock) 211 #define LACP_LINKSTATE(_sc, _lp) \ 212 lacp_linkstate((struct lagg_proto_softc *)(_sc), (_lp)) 213 #define LACP_TIMER_ARM(_lacpp, _timer, _val) \ 214 (_lacpp)->lp_timer[(_timer)] = (_val) 215 #define LACP_TIMER_DISARM(_lacpp, _timer) \ 216 LACP_TIMER_ARM((_lacpp), (_timer), 0) 217 #define LACP_TIMER_ISARMED(_lacpp, _timer) \ 218 ((_lacpp)->lp_timer[(_timer)] > 0) 219 #define LACP_PTIMER_ARM(_sc, _timer, _val) \ 220 (_sc)->lsc_timer[(_timer)] = (_val) 221 #define LACP_PTIMER_DISARM(_sc, _timer) \ 222 LACP_PTIMER_ARM((_sc), (_timer), 0) 223 #define LACP_PTIMER_ISARMED(_sc, _timer) \ 224 ((_sc)->lsc_timer[(_timer)] > 0) 225 #define LACP_STATE_EQ(_s1, _s2, _mask) (!ISSET((_s1) ^ (_s2), (_mask))) 226 #define LACP_PORT_XNAME(_lacpp) (_lacpp != NULL) ? \ 227 (_lacpp)->lp_laggport->lp_ifp->if_xname : "(unknown)" 228 #define LACP_ISDUMPING(_sc) (_sc)->lsc_dump_du 229 #define LACP_PORTMAP_ACTIVE(_sc) \ 230 atomic_load_consume(&(_sc)->lsc_activemap) 231 #define LACP_PORTMAP_NEXT(_sc) \ 232 (((LACP_PORTMAP_ACTIVE((_sc))) ^ 0x01) &0x01) 233 #define LACP_SYS_PRI(_la) ntohs((_la)->la_sid.sid_prio) 234 #define LACP_TLV_PARSE(_du, _st, _name, _tlvlist) \ 235 tlv_parse(&(_du)->_name, \ 236 sizeof(_st) - offsetof(_st, _name), \ 237 (_tlvlist)) 238 239 static void lacp_tick(void *); 240 static void lacp_tick_work(struct lagg_work *, void *); 241 static uint32_t lacp_ifmedia2lacpmedia(u_int); 242 static void lacp_port_disable(struct lacp_softc *, struct lacp_port *); 243 static void lacp_port_enable(struct lacp_softc *, struct lacp_port *); 244 static void lacp_peerinfo_actor(struct lacp_softc *, struct lacp_port *, 245 struct lacpdu_peerinfo *); 246 static void lacp_peerinfo_partner(struct lacp_port *, 247 struct lacpdu_peerinfo *); 248 static struct lagg_port * 249 lacp_select_tx_port(struct lacp_softc *, struct mbuf *, 250 struct psref *); 251 static void lacp_suppress_distributing(struct lacp_softc *); 252 static void lacp_distributing_timer(struct lacp_softc *); 253 254 static void lacp_select(struct lacp_softc *, struct lacp_port *); 255 static void lacp_unselect(struct lacp_softc *, struct lacp_port *); 256 static void lacp_selected_update(struct lacp_softc *, 257 struct lacp_aggregator *); 258 static void lacp_sm_port_init(struct lacp_softc *, 259 struct lacp_port *, struct lagg_port *); 260 static int lacp_set_mux(struct lacp_softc *, 261 struct lacp_port *, enum lacp_mux_state); 262 static void lacp_sm_mux(struct lacp_softc *, struct lacp_port *); 263 static void lacp_sm_mux_timer(struct lacp_softc *, struct lacp_port *); 264 static void lacp_sm_rx(struct lacp_softc *, struct lacp_port *, 265 struct lacpdu_peerinfo *, struct lacpdu_peerinfo *); 266 static void lacp_sm_rx_set_expired(struct lacp_port *); 267 static void lacp_sm_rx_timer(struct lacp_softc *, struct lacp_port *); 268 static void lacp_sm_rx_record_default(struct lacp_softc *, 269 struct lacp_port *); 270 271 static void lacp_sm_tx(struct lacp_softc *, struct lacp_port *); 272 static void lacp_sm_tx_work(struct lagg_work *, void *); 273 static void lacp_sm_ptx_timer(struct lacp_softc *, struct lacp_port *); 274 static void lacp_sm_ptx_schedule(struct lacp_port *); 275 static void lacp_sm_ptx_update_timeout(struct lacp_port *, uint8_t); 276 277 static void lacp_marker_work(struct lagg_work *, void *); 278 static void lacp_dump_lacpdutlv(const struct lacpdu_peerinfo *, 279 const struct lacpdu_peerinfo *, 280 const struct lacpdu_collectorinfo *); 281 static void lacp_dump_markertlv(const struct markerdu_info *, 282 const struct markerdu_info *); 283 284 typedef void (*lacp_timer_func_t)(struct lacp_softc *, struct lacp_port *); 285 static const lacp_timer_func_t lacp_timer_funcs[] = { 286 [LACP_TIMER_CURRENT_WHILE] = lacp_sm_rx_timer, 287 [LACP_TIMER_PERIODIC] = lacp_sm_ptx_timer, 288 [LACP_TIMER_WAIT_WHILE] = lacp_sm_mux_timer, 289 }; 290 typedef void (*lacp_prototimer_func_t)(struct lacp_softc *); 291 static const lacp_prototimer_func_t lacp_ptimer_funcs[] = { 292 [LACP_PTIMER_DISTRIBUTING] = lacp_distributing_timer, 293 }; 294 295 static void 296 lacp_dprintf(const struct lacp_softc *lsc, const struct lacp_port *lacpp, 297 const char *fmt, ...) 298 { 299 struct lagg_softc *sc; 300 va_list va; 301 302 if (lsc != NULL && lsc->lsc_softc != NULL) { 303 sc = lsc->lsc_softc; 304 printf("%s", sc->sc_if.if_xname); 305 } else { 306 printf("lacp"); 307 } 308 309 if (lacpp != NULL) 310 printf("(%s)", LACP_PORT_XNAME(lacpp)); 311 312 printf(": "); 313 314 va_start(va, fmt); 315 vprintf(fmt, va); 316 va_end(va); 317 } 318 319 static inline void 320 lacp_evcnt_attach(struct lacp_softc *lsc, 321 struct evcnt *ev, const char *name) 322 { 323 324 evcnt_attach_dynamic(ev, EVCNT_TYPE_MISC, NULL, 325 lsc->lsc_evgroup, name); 326 } 327 328 static inline bool 329 lacp_iscollecting(struct lacp_port *lacpp) 330 { 331 332 return atomic_load_relaxed(&lacpp->lp_collector); 333 } 334 335 static inline bool 336 lacp_isdistributing(struct lacp_port *lacpp) 337 { 338 339 return ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_DISTRIBUTING); 340 } 341 342 static inline bool 343 lacp_isactive(struct lacp_softc *lsc, struct lacp_port *lacpp) 344 { 345 346 if (lacpp->lp_selected != LACP_SELECTED) 347 return false; 348 349 if (lacpp->lp_aggregator == NULL) 350 return false; 351 352 if (lacpp->lp_aggregator != lsc->lsc_aggregator) 353 return false; 354 355 return true; 356 } 357 358 static inline void 359 lacp_mcastaddr(struct ifreq *ifr, const char *if_xname) 360 { 361 static const uint8_t addr[ETHER_ADDR_LEN] = 362 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x02 }; 363 364 memset(ifr, 0, sizeof(*ifr)); 365 366 strlcpy(ifr->ifr_name, if_xname, 367 sizeof(ifr->ifr_name)); 368 ifr->ifr_addr.sa_len = sizeof(ifr->ifr_addr); 369 ifr->ifr_addr.sa_family = AF_UNSPEC; 370 371 KASSERT(sizeof(ifr->ifr_addr) >= sizeof(addr)); 372 memcpy(&ifr->ifr_addr.sa_data, addr, sizeof(addr)); 373 } 374 375 static inline u_int 376 lacp_portmap_linkstate(struct lacp_portmap *pm) 377 { 378 379 if (pm->pm_count == 0) 380 return LINK_STATE_DOWN; 381 382 return LINK_STATE_UP; 383 } 384 385 static inline struct lacp_port * 386 lacp_port_priority_max(struct lacp_port *a, struct lacp_port *b) 387 { 388 uint16_t pri_a, pri_b; 389 390 pri_a = ntohs(a->lp_actor.lpi_portprio); 391 pri_b = ntohs(b->lp_actor.lpi_portprio); 392 393 if (pri_a < pri_b) 394 return a; 395 if (pri_b < pri_a) 396 return b; 397 398 pri_a = ntohs(a->lp_partner.lpi_portprio); 399 pri_b = ntohs(b->lp_partner.lpi_portprio); 400 401 if (pri_a < pri_b) 402 return a; 403 if (pri_b < pri_a) 404 return b; 405 406 if (a->lp_media > b->lp_media) 407 return a; 408 if (b->lp_media > a->lp_media) 409 return b; 410 411 return a; 412 } 413 414 static void 415 tlv_parse(void *vp, size_t len, struct tlv *list) 416 { 417 struct tlvhdr *th; 418 uint8_t *p; 419 size_t l, i; 420 421 th = (struct tlvhdr *)vp; 422 p = (uint8_t *)vp; 423 424 for (l = 0; l < len; l += th->tlv_length) { 425 th = (struct tlvhdr *)(p + l); 426 427 if (th->tlv_type == TLV_TYPE_TERMINATE) 428 break; 429 430 for (i = 0; list[i].tlv_t != TLV_TYPE_TERMINATE; i++) { 431 if (th->tlv_type != list[i].tlv_t) 432 continue; 433 434 if (th->tlv_length - sizeof(*th) != list[i].tlv_l) 435 break; 436 437 if (list[i].tlv_v == NULL) { 438 list[i].tlv_v = 439 (void *)((uint8_t *)th + sizeof(*th)); 440 } 441 442 break; 443 } 444 } 445 } 446 447 int 448 lacp_attach(struct lagg_softc *sc, struct lagg_proto_softc **lscp) 449 { 450 struct lacp_softc *lsc; 451 char xnamebuf[MAXCOMLEN]; 452 int error; 453 454 KASSERT(LAGG_LOCKED(sc)); 455 456 lsc = kmem_zalloc(sizeof(*lsc), KM_NOSLEEP); 457 if (lsc == NULL) 458 return ENOMEM; 459 460 mutex_init(&lsc->lsc_lock, MUTEX_DEFAULT, IPL_SOFTNET); 461 lsc->lsc_softc = sc; 462 lsc->lsc_key = htons(if_get_index(&sc->sc_if)); 463 lsc->lsc_system_prio = htons(LACP_SYSTEM_PRIO); 464 lsc->lsc_running = false; 465 lsc->lsc_max_ports = LACP_MAX_PORTS; 466 lsc->lsc_multi_linkspeed = true; 467 TAILQ_INIT(&lsc->lsc_aggregators); 468 469 lagg_work_set(&lsc->lsc_work_tick, lacp_tick_work, lsc); 470 snprintf(xnamebuf, sizeof(xnamebuf), "%s.lacp", 471 sc->sc_if.if_xname); 472 lsc->lsc_workq = lagg_workq_create(xnamebuf, 473 PRI_SOFTNET, IPL_SOFTNET, WQ_MPSAFE); 474 if (lsc->lsc_workq == NULL) { 475 lagg_log(sc, LOG_ERR, "workqueue create failed\n"); 476 error = ENOMEM; 477 goto destroy_lock; 478 } 479 480 lsc->lsc_psz = pserialize_create(); 481 482 callout_init(&lsc->lsc_tick, CALLOUT_MPSAFE); 483 callout_setfunc(&lsc->lsc_tick, lacp_tick, lsc); 484 485 snprintf(lsc->lsc_evgroup, sizeof(lsc->lsc_evgroup), 486 "%s-lacp", sc->sc_if.if_xname); 487 lacp_evcnt_attach(lsc, &lsc->lsc_mgethdr_failed, "MGETHDR failed"); 488 lacp_evcnt_attach(lsc, &lsc->lsc_mpullup_failed, "m_pullup failed"); 489 lacp_evcnt_attach(lsc, &lsc->lsc_badlacpdu, "Bad LACPDU recieved"); 490 lacp_evcnt_attach(lsc, &lsc->lsc_badmarkerdu, "Bad MarkerDU recieved"); 491 492 if_link_state_change(&sc->sc_if, LINK_STATE_DOWN); 493 494 *lscp = (struct lagg_proto_softc *)lsc; 495 return 0; 496 497 destroy_lock: 498 mutex_destroy(&lsc->lsc_lock); 499 500 return error; 501 } 502 503 void 504 lacp_detach(struct lagg_proto_softc *xlsc) 505 { 506 struct lacp_softc *lsc = (struct lacp_softc *)xlsc; 507 struct lagg_softc *sc __diagused = lsc->lsc_softc; 508 509 KASSERT(LAGG_LOCKED(lsc->lsc_softc)); 510 KASSERT(TAILQ_EMPTY(&lsc->lsc_aggregators)); 511 KASSERT(SIMPLEQ_EMPTY(&sc->sc_ports)); 512 513 lacp_down(xlsc); 514 515 evcnt_detach(&lsc->lsc_mgethdr_failed); 516 evcnt_detach(&lsc->lsc_mpullup_failed); 517 evcnt_detach(&lsc->lsc_badlacpdu); 518 evcnt_detach(&lsc->lsc_badmarkerdu); 519 lagg_workq_destroy(lsc->lsc_workq); 520 pserialize_destroy(lsc->lsc_psz); 521 mutex_destroy(&lsc->lsc_lock); 522 kmem_free(lsc, sizeof(*lsc)); 523 } 524 525 int 526 lacp_up(struct lagg_proto_softc *xlsc) 527 { 528 struct lagg_softc *sc; 529 struct lagg_port *lp; 530 struct lacp_softc *lsc; 531 532 lsc = (struct lacp_softc *)xlsc; 533 sc = lsc->lsc_softc; 534 535 KASSERT(LAGG_LOCKED(sc)); 536 537 LACP_LOCK(lsc); 538 lsc->lsc_running = true; 539 callout_schedule(&lsc->lsc_tick, hz); 540 LACP_UNLOCK(lsc); 541 542 LAGG_PORTS_FOREACH(sc, lp) { 543 lacp_linkstate(xlsc, lp); 544 } 545 546 LACP_DPRINTF((lsc, NULL, "lacp start\n")); 547 548 return 0; 549 } 550 551 static void 552 lacp_down_locked(struct lacp_softc *lsc) 553 { 554 struct lagg_softc *sc; 555 struct lagg_port *lp; 556 557 sc = lsc->lsc_softc; 558 559 KASSERT(LAGG_LOCKED(sc)); 560 KASSERT(LACP_LOCKED(lsc)); 561 562 lsc->lsc_running = false; 563 callout_halt(&lsc->lsc_tick, &lsc->lsc_lock); 564 565 LAGG_PORTS_FOREACH(sc, lp) { 566 lacp_port_disable(lsc, lp->lp_proto_ctx); 567 } 568 569 LACP_DPRINTF((lsc, NULL, "lacp stopped\n")); 570 } 571 572 void 573 lacp_down(struct lagg_proto_softc *xlsc) 574 { 575 struct lacp_softc *lsc; 576 577 lsc = (struct lacp_softc *)xlsc; 578 579 KASSERT(LAGG_LOCKED(lsc->lsc_softc)); 580 581 LACP_LOCK(lsc); 582 lacp_down_locked(lsc); 583 LACP_UNLOCK(lsc); 584 } 585 586 int 587 lacp_transmit(struct lagg_proto_softc *xlsc, struct mbuf *m) 588 { 589 struct lacp_softc *lsc; 590 struct lagg_port *lp; 591 struct ifnet *ifp; 592 struct psref psref; 593 594 lsc = (struct lacp_softc *)xlsc; 595 596 if (__predict_false(lsc->lsc_suppress_distributing)) { 597 LACP_DPRINTF((lsc, NULL, "waiting transit\n")); 598 m_freem(m); 599 return ENOBUFS; 600 } 601 602 lp = lacp_select_tx_port(lsc, m, &psref); 603 if (__predict_false(lp == NULL)) { 604 LACP_DPRINTF((lsc, NULL, "no distributing port\n")); 605 ifp = &lsc->lsc_softc->sc_if; 606 if_statinc(ifp, if_oerrors); 607 m_freem(m); 608 return ENOENT; 609 } 610 611 lagg_enqueue(lsc->lsc_softc, lp, m); 612 lagg_port_putref(lp, &psref); 613 614 return 0; 615 } 616 617 int 618 lacp_allocport(struct lagg_proto_softc *xlsc, struct lagg_port *lp) 619 { 620 struct lagg_softc *sc; 621 struct lacp_softc *lsc; 622 struct lacp_port *lacpp; 623 struct ifreq ifr; 624 int error; 625 626 lsc = (struct lacp_softc *)xlsc; 627 sc = lsc->lsc_softc; 628 629 KASSERT(LAGG_LOCKED(sc)); 630 631 IFNET_LOCK(lp->lp_ifp); 632 lacp_mcastaddr(&ifr, lp->lp_ifp->if_xname); 633 error = lp->lp_ioctl(lp->lp_ifp, SIOCADDMULTI, (void *)&ifr); 634 IFNET_UNLOCK(lp->lp_ifp); 635 636 if (error != 0) { 637 lagg_log(sc, LOG_ERR, "SIOCADDMULTI failed on %s\n", 638 lp->lp_ifp->if_xname); 639 return error; 640 } 641 642 lacpp = kmem_zalloc(sizeof(*lacpp), KM_NOSLEEP); 643 if (lacpp == NULL) 644 return ENOMEM; 645 646 lagg_work_set(&lacpp->lp_work_smtx, lacp_sm_tx_work, lsc); 647 lagg_work_set(&lacpp->lp_work_marker, lacp_marker_work, lsc); 648 649 LACP_LOCK(lsc); 650 if (LAGG_PORTS_EMPTY(sc)) { 651 memcpy(lsc->lsc_system_mac, LAGG_CLLADDR(sc), 652 sizeof(lsc->lsc_system_mac)); 653 } 654 lacp_sm_port_init(lsc, lacpp, lp); 655 LACP_UNLOCK(lsc); 656 657 lp->lp_proto_ctx = (void *)lacpp; 658 lp->lp_prio = ntohs(lacpp->lp_actor.lpi_portprio); 659 LACP_LINKSTATE(lsc, lp); 660 661 return 0; 662 } 663 664 void 665 lacp_startport(struct lagg_proto_softc *xlsc, struct lagg_port *lp) 666 { 667 struct lacp_port *lacpp; 668 uint16_t prio; 669 670 lacpp = lp->lp_proto_ctx; 671 672 prio = (uint16_t)MIN(lp->lp_prio, UINT16_MAX); 673 lacpp->lp_actor.lpi_portprio = htons(prio); 674 675 LACP_LINKSTATE((struct lacp_softc *)xlsc, lp); 676 } 677 678 void 679 lacp_stopport(struct lagg_proto_softc *xlsc, struct lagg_port *lp) 680 { 681 struct lacp_softc *lsc; 682 struct lacp_port *lacpp; 683 int i; 684 685 lsc = (struct lacp_softc *)xlsc; 686 lacpp = lp->lp_proto_ctx; 687 688 KASSERT(LAGG_LOCKED(lsc->lsc_softc)); 689 690 LACP_LOCK(lsc); 691 for (i = 0; i < LACP_NTIMER; i++) { 692 LACP_TIMER_DISARM(lacpp, i); 693 } 694 695 lacp_port_disable(lsc, lacpp); 696 LACP_UNLOCK(lsc); 697 } 698 699 void 700 lacp_freeport(struct lagg_proto_softc *xlsc, struct lagg_port *lp) 701 { 702 struct lacp_softc *lsc; 703 struct lacp_port *lacpp, *lacpp0; 704 struct lagg_softc *sc; 705 struct lagg_port *lp0; 706 struct ifreq ifr; 707 708 lsc = (struct lacp_softc *)xlsc; 709 sc = lsc->lsc_softc; 710 lacpp = lp->lp_proto_ctx; 711 712 KASSERT(LAGG_LOCKED(sc)); 713 714 lagg_workq_wait(lsc->lsc_workq, &lacpp->lp_work_smtx); 715 lagg_workq_wait(lsc->lsc_workq, &lacpp->lp_work_marker); 716 717 lacp_mcastaddr(&ifr, LACP_PORT_XNAME(lacpp)); 718 719 IFNET_LOCK(lp->lp_ifp); 720 (void)lp->lp_ioctl(lp->lp_ifp, SIOCDELMULTI, (void *)&ifr); 721 IFNET_UNLOCK(lp->lp_ifp); 722 723 LACP_LOCK(lsc); 724 if (LAGG_PORTS_EMPTY(sc)) { 725 memset(lsc->lsc_system_mac, 0, 726 sizeof(lsc->lsc_system_mac)); 727 } else if (memcmp(LAGG_CLLADDR(sc), lsc->lsc_system_mac, 728 sizeof(lsc->lsc_system_mac)) != 0) { 729 memcpy(lsc->lsc_system_mac, LAGG_CLLADDR(sc), 730 sizeof(lsc->lsc_system_mac)); 731 LAGG_PORTS_FOREACH(sc, lp0) { 732 lacpp0 = lp0->lp_proto_ctx; 733 lacpp0->lp_selected = LACP_UNSELECTED; 734 /* reset state of the port at lacp_set_mux() */ 735 } 736 } 737 LACP_UNLOCK(lsc); 738 739 lp->lp_proto_ctx = NULL; 740 kmem_free(lacpp, sizeof(*lacpp)); 741 } 742 743 void 744 lacp_protostat(struct lagg_proto_softc *xlsc, struct laggreqproto *resp) 745 { 746 struct laggreq_lacp *rplacp; 747 struct lacp_softc *lsc; 748 struct lacp_aggregator *la; 749 struct lacp_aggregator_systemid *sid; 750 751 lsc = (struct lacp_softc *)xlsc; 752 753 LACP_LOCK(lsc); 754 la = lsc->lsc_aggregator; 755 rplacp = &resp->rp_lacp; 756 757 if (lsc->lsc_optimistic) 758 SET(rplacp->flags, LAGGREQLACP_OPTIMISTIC); 759 if (lsc->lsc_dump_du) 760 SET(rplacp->flags, LAGGREQLACP_DUMPDU); 761 if (lsc->lsc_stop_lacpdu) 762 SET(rplacp->flags, LAGGREQLACP_STOPDU); 763 if (lsc->lsc_multi_linkspeed) 764 SET(rplacp->flags, LAGGREQLACP_MULTILS); 765 766 rplacp->maxports = lsc->lsc_max_ports; 767 rplacp->actor_prio = ntohs(lsc->lsc_system_prio); 768 memcpy(rplacp->actor_mac, lsc->lsc_system_mac, 769 sizeof(rplacp->actor_mac)); 770 rplacp->actor_key = ntohs(lsc->lsc_key); 771 772 if (la != NULL) { 773 sid = &la->la_sid; 774 rplacp->partner_prio = ntohs(sid->sid_prio); 775 memcpy(rplacp->partner_mac, sid->sid_mac, 776 sizeof(rplacp->partner_mac)); 777 rplacp->partner_key = ntohs(sid->sid_key); 778 } 779 LACP_UNLOCK(lsc); 780 } 781 782 void 783 lacp_portstat(struct lagg_proto_softc *xlsc, struct lagg_port *lp, 784 struct laggreqport *resp) 785 { 786 struct laggreq_lacpport *llp; 787 struct lacp_softc *lsc; 788 struct lacp_port *lacpp; 789 struct lacp_aggregator *la; 790 struct lacp_aggregator_systemid *sid; 791 792 lsc = (struct lacp_softc *)xlsc; 793 lacpp = lp->lp_proto_ctx; 794 la = lacpp->lp_aggregator; 795 llp = &resp->rp_lacpport; 796 797 if (lacp_isactive(lsc, lacpp)) 798 SET(resp->rp_flags, LAGG_PORT_ACTIVE); 799 if (lacp_iscollecting(lacpp)) 800 SET(resp->rp_flags, LAGG_PORT_COLLECTING); 801 if (lacp_isdistributing(lacpp)) 802 SET(resp->rp_flags, LAGG_PORT_DISTRIBUTING); 803 if (lacpp->lp_selected == LACP_STANDBY) 804 SET(resp->rp_flags, LAGG_PORT_STANDBY); 805 806 if (la != NULL) { 807 sid = &la->la_sid; 808 llp->partner_prio = ntohs(sid->sid_prio); 809 memcpy(llp->partner_mac, sid->sid_mac, 810 sizeof(llp->partner_mac)); 811 llp->partner_key = ntohs(sid->sid_key); 812 } 813 814 llp->actor_portprio = ntohs(lacpp->lp_actor.lpi_portprio); 815 llp->actor_portno = ntohs(lacpp->lp_actor.lpi_portno); 816 llp->actor_state = lacpp->lp_actor.lpi_state; 817 818 llp->partner_portprio = ntohs(lacpp->lp_partner.lpi_portprio); 819 llp->partner_portno = ntohs(lacpp->lp_partner.lpi_portno); 820 llp->partner_state = lacpp->lp_partner.lpi_state; 821 } 822 823 void 824 lacp_linkstate(struct lagg_proto_softc *xlsc, struct lagg_port *lp) 825 { 826 struct lacp_softc *lsc; 827 struct lacp_port *lacpp; 828 struct ifmediareq ifmr; 829 struct ifnet *ifp_port; 830 uint8_t old_state; 831 uint32_t media, old_media; 832 int error; 833 834 lsc = (struct lacp_softc *)xlsc; 835 836 ifp_port = lp->lp_ifp; 837 lacpp = lp->lp_proto_ctx; 838 media = LACP_MEDIA_DEFAULT; 839 840 memset(&ifmr, 0, sizeof(ifmr)); 841 ifmr.ifm_count = 0; 842 error = ifp_port->if_ioctl(ifp_port, SIOCGIFMEDIA, (void *)&ifmr); 843 if (error == 0) { 844 media = lacp_ifmedia2lacpmedia(ifmr.ifm_active); 845 } else if (error != ENOTTY){ 846 LACP_DPRINTF((lsc, lacpp, 847 "SIOCGIFMEDIA failed (%d)\n", error)); 848 return; 849 } 850 851 LACP_LOCK(lsc); 852 if (lsc->lsc_running) { 853 old_media = lacpp->lp_media; 854 old_state = lacpp->lp_actor.lpi_state; 855 856 if (lacpp->lp_media != media) { 857 LACP_DPRINTF((lsc, lacpp, 858 "media changed 0x%"PRIx32"->0x%"PRIx32", " 859 "ether = %d, fdx = %d, link = %d, running = %d\n", 860 lacpp->lp_media, media, 861 ISSET(media, LACP_MEDIA_ETHER) != 0, 862 ISSET(media, LACP_MEDIA_FDX) != 0, 863 ifp_port->if_link_state != LINK_STATE_DOWN, 864 ISSET(ifp_port->if_flags, IFF_RUNNING) != 0)); 865 lacpp->lp_media = media; 866 } 867 868 if (ISSET(media, LACP_MEDIA_ETHER) && 869 ISSET(media, LACP_MEDIA_FDX) && 870 ifp_port->if_link_state != LINK_STATE_DOWN && 871 ISSET(ifp_port->if_flags, IFF_RUNNING)) { 872 lacp_port_enable(lsc, lacpp); 873 } else { 874 lacp_port_disable(lsc, lacpp); 875 } 876 877 if (old_state != lacpp->lp_actor.lpi_state || 878 old_media != media) { 879 LACP_DPRINTF((lsc, lacpp, 880 "state changed to UNSELECTED\n")); 881 lacpp->lp_selected = LACP_UNSELECTED; 882 } 883 } else { 884 LACP_DPRINTF((lsc, lacpp, 885 "LACP is inactive, skip linkstate\n")); 886 } 887 888 LACP_UNLOCK(lsc); 889 } 890 891 int 892 lacp_ioctl(struct lagg_proto_softc *xlsc, struct laggreqproto *lreq) 893 { 894 struct lacp_softc *lsc; 895 struct laggreq_lacp *rplacp; 896 struct lacp_aggregator *la; 897 int error; 898 size_t maxports; 899 bool set; 900 901 lsc = (struct lacp_softc *)xlsc; 902 rplacp = &lreq->rp_lacp; 903 error = 0; 904 905 switch (rplacp->command) { 906 case LAGGIOC_LACPSETFLAGS: 907 case LAGGIOC_LACPCLRFLAGS: 908 set = (rplacp->command == LAGGIOC_LACPSETFLAGS) ? 909 true : false; 910 911 LACP_LOCK(lsc); 912 913 if (ISSET(rplacp->flags, LAGGREQLACP_OPTIMISTIC)) 914 lsc->lsc_optimistic = set; 915 if (ISSET(rplacp->flags, LAGGREQLACP_DUMPDU)) 916 lsc->lsc_dump_du = set; 917 if (ISSET(rplacp->flags, LAGGREQLACP_STOPDU)) 918 lsc->lsc_stop_lacpdu = set; 919 if (ISSET(rplacp->flags, LAGGREQLACP_MULTILS)) 920 lsc->lsc_multi_linkspeed = set; 921 922 LACP_UNLOCK(lsc); 923 break; 924 case LAGGIOC_LACPSETMAXPORTS: 925 case LAGGIOC_LACPCLRMAXPORTS: 926 maxports = (rplacp->command == LAGGIOC_LACPSETMAXPORTS) ? 927 rplacp->maxports : LACP_MAX_PORTS; 928 if (0 == maxports || LACP_MAX_PORTS < maxports) { 929 error = ERANGE; 930 break; 931 } 932 933 LACP_LOCK(lsc); 934 if (lsc->lsc_max_ports != maxports) { 935 lsc->lsc_max_ports = maxports; 936 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 937 lacp_selected_update(lsc, la); 938 } 939 } 940 LACP_UNLOCK(lsc); 941 break; 942 default: 943 error = ENOTTY; 944 } 945 946 return error; 947 } 948 949 static int 950 lacp_pdu_input(struct lacp_softc *lsc, struct lacp_port *lacpp, struct mbuf *m) 951 { 952 enum { 953 LACP_TLV_ACTOR = 0, 954 LACP_TLV_PARTNER, 955 LACP_TLV_COLLECTOR, 956 LACP_TLV_TERM, 957 LACP_TLV_NUM 958 }; 959 960 struct lacpdu *du; 961 struct lacpdu_peerinfo *pi_actor, *pi_partner; 962 struct lacpdu_collectorinfo *lci; 963 struct tlv tlvlist_lacp[LACP_TLV_NUM] = { 964 [LACP_TLV_ACTOR] = { 965 .tlv_t = LACP_TYPE_ACTORINFO, 966 .tlv_l = sizeof(*pi_actor)}, 967 [LACP_TLV_PARTNER] = { 968 .tlv_t = LACP_TYPE_PARTNERINFO, 969 .tlv_l = sizeof(*pi_partner)}, 970 [LACP_TLV_COLLECTOR] = { 971 .tlv_t = LACP_TYPE_COLLECTORINFO, 972 .tlv_l = sizeof(*lci)}, 973 [LACP_TLV_TERM] = { 974 .tlv_t = TLV_TYPE_TERMINATE, 975 .tlv_l = 0}, 976 }; 977 978 if (m->m_pkthdr.len != sizeof(*du)) 979 goto bad; 980 981 if ((m->m_flags & M_MCAST) == 0) 982 goto bad; 983 984 if (m->m_len < (int)sizeof(*du)) { 985 m = m_pullup(m, sizeof(*du)); 986 if (m == NULL) { 987 lsc->lsc_mpullup_failed.ev_count++; 988 return ENOMEM; 989 } 990 } 991 992 du = mtod(m, struct lacpdu *); 993 994 if (memcmp(&du->ldu_eh.ether_dhost, 995 ethermulticastaddr_slowprotocols, ETHER_ADDR_LEN) != 0) 996 goto bad; 997 998 LACP_TLV_PARSE(du, struct lacpdu, ldu_tlv_actor, 999 tlvlist_lacp); 1000 1001 pi_actor = tlvlist_lacp[LACP_TLV_ACTOR].tlv_v; 1002 pi_partner = tlvlist_lacp[LACP_TLV_PARTNER].tlv_v; 1003 lci = tlvlist_lacp[LACP_TLV_COLLECTOR].tlv_v; 1004 1005 if (pi_actor == NULL || pi_partner == NULL) 1006 goto bad; 1007 1008 if (LACP_ISDUMPING(lsc)) { 1009 lacp_dprintf(lsc, lacpp, "lacpdu received\n"); 1010 lacp_dump_lacpdutlv(pi_actor, pi_partner, lci); 1011 } 1012 1013 LACP_LOCK(lsc); 1014 lacp_sm_rx(lsc, lacpp, pi_partner, pi_actor); 1015 LACP_UNLOCK(lsc); 1016 1017 m_freem(m); 1018 return 0; 1019 bad: 1020 lsc->lsc_badlacpdu.ev_count++; 1021 m_freem(m); 1022 return EINVAL; 1023 } 1024 1025 static int 1026 marker_cmp(struct markerdu_info *mi, 1027 struct lacp_softc *lsc, struct lacp_port *lacpp) 1028 { 1029 1030 KASSERT(LACP_LOCKED(lsc)); 1031 1032 if (mi->mi_rq_port != lacpp->lp_actor.lpi_portno) 1033 return -1; 1034 1035 if (ntohl(mi->mi_rq_xid) != lacpp->lp_marker_xid) 1036 return -1; 1037 1038 return memcmp(mi->mi_rq_system, lsc->lsc_system_mac, 1039 LACP_MAC_LEN); 1040 } 1041 1042 static void 1043 lacp_marker_reply(struct lacp_softc *lsc, struct lacp_port *lacpp, 1044 struct mbuf *m_info) 1045 { 1046 struct lagg_port *lp; 1047 struct markerdu *mdu; 1048 struct ifnet *ifp_port; 1049 struct psref psref; 1050 1051 LACP_LOCK(lsc); 1052 lp = lacpp->lp_laggport; 1053 lagg_port_getref(lp, &psref); 1054 LACP_UNLOCK(lsc); 1055 1056 ifp_port = lp->lp_ifp; 1057 mdu = mtod(m_info, struct markerdu *); 1058 1059 mdu->mdu_tlv_info.tlv_type = MARKER_TYPE_RESPONSE; 1060 /* ether_dhost is already equals to multicast address */ 1061 memcpy(mdu->mdu_eh.ether_shost, 1062 CLLADDR(ifp_port->if_sadl), ETHER_ADDR_LEN); 1063 1064 if (LACP_ISDUMPING(lsc)) { 1065 lacp_dprintf(lsc, lacpp, "markerdu reply\n"); 1066 lacp_dump_markertlv(NULL, &mdu->mdu_info); 1067 } 1068 1069 lagg_port_xmit(lp, m_info); 1070 lagg_port_putref(lp, &psref); 1071 } 1072 1073 static int 1074 lacp_marker_recv_response(struct lacp_softc *lsc, struct lacp_port *lacpp, 1075 struct markerdu_info *mi_res) 1076 { 1077 struct lagg_softc *sc; 1078 struct lagg_port *lp0; 1079 struct lacp_port *lacpp0; 1080 bool pending; 1081 1082 sc = lsc->lsc_softc; 1083 1084 LACP_LOCK(lsc); 1085 if (marker_cmp(mi_res, lsc, lacpp) != 0) { 1086 LACP_UNLOCK(lsc); 1087 return -1; 1088 } 1089 CLR(lacpp->lp_flags, LACP_PORT_MARK); 1090 LACP_UNLOCK(lsc); 1091 1092 LAGG_LOCK(sc); 1093 LACP_LOCK(lsc); 1094 1095 if (lsc->lsc_suppress_distributing) { 1096 pending = false; 1097 LAGG_PORTS_FOREACH(sc, lp0) { 1098 lacpp0 = lp0->lp_proto_ctx; 1099 if (ISSET(lacpp0->lp_flags, LACP_PORT_MARK)) { 1100 pending = true; 1101 break; 1102 } 1103 } 1104 1105 if (!pending) { 1106 LACP_DPRINTF((lsc, NULL, "queue flush complete\n")); 1107 LACP_PTIMER_DISARM(lsc, LACP_PTIMER_DISTRIBUTING); 1108 lsc->lsc_suppress_distributing = false; 1109 } 1110 } 1111 1112 LACP_UNLOCK(lsc); 1113 LAGG_UNLOCK(sc); 1114 1115 return 0; 1116 } 1117 1118 static int 1119 lacp_marker_input(struct lacp_softc *lsc, struct lacp_port *lacpp, 1120 struct mbuf *m) 1121 { 1122 enum { 1123 MARKER_TLV_INFO = 0, 1124 MARKER_TLV_RESPONSE, 1125 MARKER_TLV_TERM, 1126 MARKER_TLV_NUM 1127 }; 1128 1129 struct markerdu *mdu; 1130 struct markerdu_info *mi_info, *mi_res; 1131 int error; 1132 struct tlv tlvlist_marker[MARKER_TLV_NUM] = { 1133 [MARKER_TLV_INFO] = { 1134 .tlv_t = MARKER_TYPE_INFO, 1135 .tlv_l = sizeof(*mi_info)}, 1136 [MARKER_TLV_RESPONSE] = { 1137 .tlv_t = MARKER_TYPE_RESPONSE, 1138 .tlv_l = sizeof(*mi_res)}, 1139 [MARKER_TLV_TERM] = { 1140 .tlv_t = TLV_TYPE_TERMINATE, 1141 .tlv_l = 0}, 1142 }; 1143 1144 if (m->m_pkthdr.len != sizeof(*mdu)) 1145 goto bad; 1146 1147 if ((m->m_flags & M_MCAST) == 0) 1148 goto bad; 1149 1150 if (m->m_len < (int)sizeof(*mdu)) { 1151 m = m_pullup(m, sizeof(*mdu)); 1152 if (m == NULL) { 1153 lsc->lsc_mpullup_failed.ev_count++; 1154 return ENOMEM; 1155 } 1156 } 1157 1158 mdu = mtod(m, struct markerdu *); 1159 1160 if (memcmp(mdu->mdu_eh.ether_dhost, 1161 ethermulticastaddr_slowprotocols, ETHER_ADDR_LEN) != 0) 1162 goto bad; 1163 1164 LACP_TLV_PARSE(mdu, struct markerdu, mdu_tlv_info, 1165 tlvlist_marker); 1166 1167 mi_info = tlvlist_marker[MARKER_TLV_INFO].tlv_v; 1168 mi_res = tlvlist_marker[MARKER_TLV_RESPONSE].tlv_v; 1169 1170 if (LACP_ISDUMPING(lsc)) { 1171 lacp_dprintf(lsc, lacpp, "markerdu received\n"); 1172 lacp_dump_markertlv(mi_info, mi_res); 1173 } 1174 1175 if (mi_info != NULL && mi_res == NULL) { 1176 lacp_marker_reply(lsc, lacpp, m); 1177 } else if (mi_info == NULL && mi_res != NULL) { 1178 error = lacp_marker_recv_response(lsc, lacpp, 1179 mi_res); 1180 if (error != 0) { 1181 goto bad; 1182 } else { 1183 m_freem(m); 1184 } 1185 } else { 1186 goto bad; 1187 } 1188 1189 return 0; 1190 bad: 1191 lsc->lsc_badmarkerdu.ev_count++; 1192 m_freem(m); 1193 return EINVAL; 1194 } 1195 1196 struct mbuf * 1197 lacp_input(struct lagg_proto_softc *xlsc, struct lagg_port *lp, struct mbuf *m) 1198 { 1199 struct ifnet *ifp; 1200 struct lacp_softc *lsc; 1201 struct lacp_port *lacpp; 1202 struct ether_header *eh; 1203 uint8_t subtype; 1204 1205 eh = mtod(m, struct ether_header *); 1206 lsc = (struct lacp_softc *)xlsc; 1207 ifp = &lsc->lsc_softc->sc_if; 1208 lacpp = lp->lp_proto_ctx; 1209 1210 if (!vlan_has_tag(m) && 1211 eh->ether_type == htons(ETHERTYPE_SLOWPROTOCOLS)) { 1212 if (m->m_pkthdr.len < (int)(sizeof(*eh) + sizeof(subtype))) { 1213 m_freem(m); 1214 return NULL; 1215 } 1216 1217 m_copydata(m, sizeof(struct ether_header), 1218 sizeof(subtype), &subtype); 1219 switch (subtype) { 1220 case SLOWPROTOCOLS_SUBTYPE_LACP: 1221 (void)lacp_pdu_input(lsc, lacpp, m); 1222 return NULL; 1223 case SLOWPROTOCOLS_SUBTYPE_MARKER: 1224 (void)lacp_marker_input(lsc, lacpp, m); 1225 return NULL; 1226 } 1227 } 1228 1229 if (!lacp_iscollecting(lacpp) || !lacp_isactive(lsc, lacpp)) { 1230 if_statinc(ifp, if_ierrors); 1231 m_freem(m); 1232 return NULL; 1233 } 1234 1235 return m; 1236 } 1237 1238 static bool 1239 lacp_port_need_to_tell(struct lacp_port *lacpp) 1240 { 1241 1242 if (!ISSET(lacpp->lp_actor.lpi_state, 1243 LACP_STATE_AGGREGATION)) { 1244 return false; 1245 } 1246 1247 if (!ISSET(lacpp->lp_actor.lpi_state, 1248 LACP_STATE_ACTIVITY) 1249 && !ISSET(lacpp->lp_partner.lpi_state, 1250 LACP_STATE_ACTIVITY)) { 1251 return false; 1252 } 1253 1254 if (!ISSET(lacpp->lp_flags, LACP_PORT_NTT)) 1255 return false; 1256 1257 if (ppsratecheck(&lacpp->lp_last_lacpdu, &lacpp->lp_lacpdu_sent, 1258 (3 / LACP_FAST_PERIODIC_TIME)) == 0) 1259 return false; 1260 1261 return true; 1262 } 1263 1264 static void 1265 lacp_sm_assert_ntt(struct lacp_port *lacpp) 1266 { 1267 1268 SET(lacpp->lp_flags, LACP_PORT_NTT); 1269 } 1270 1271 static void 1272 lacp_sm_negate_ntt(struct lacp_port *lacpp) 1273 { 1274 1275 CLR(lacpp->lp_flags, LACP_PORT_NTT); 1276 } 1277 1278 static struct mbuf * 1279 lacp_lacpdu_mbuf(struct lacp_softc *lsc, struct lacp_port *lacpp) 1280 { 1281 struct ifnet *ifp_port; 1282 struct mbuf *m; 1283 struct lacpdu *du; 1284 1285 KASSERT(LACP_LOCKED(lsc)); 1286 1287 ifp_port = lacpp->lp_laggport->lp_ifp; 1288 1289 MGETHDR(m, M_DONTWAIT, MT_DATA); 1290 if (m == NULL) { 1291 lsc->lsc_mgethdr_failed.ev_count++; 1292 return NULL; 1293 } 1294 1295 m->m_pkthdr.len = m->m_len = sizeof(*du); 1296 1297 du = mtod(m, struct lacpdu *); 1298 memset(du, 0, sizeof(*du)); 1299 1300 m->m_flags |= M_MCAST; 1301 memcpy(du->ldu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 1302 ETHER_ADDR_LEN); 1303 memcpy(du->ldu_eh.ether_shost, CLLADDR(ifp_port->if_sadl), 1304 ETHER_ADDR_LEN); 1305 du->ldu_eh.ether_type = htons(ETHERTYPE_SLOWPROTOCOLS); 1306 du->ldu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_LACP; 1307 du->ldu_sph.sph_version = 1; 1308 1309 tlv_set(&du->ldu_tlv_actor, LACP_TYPE_ACTORINFO, 1310 sizeof(du->ldu_actor)); 1311 lacp_peerinfo_actor(lsc, lacpp, &du->ldu_actor); 1312 1313 tlv_set(&du->ldu_tlv_partner, LACP_TYPE_PARTNERINFO, 1314 sizeof(du->ldu_partner)); 1315 lacp_peerinfo_partner(lacpp, &du->ldu_partner); 1316 1317 tlv_set(&du->ldu_tlv_collector, LACP_TYPE_COLLECTORINFO, 1318 sizeof(du->ldu_collector)); 1319 du->ldu_collector.lci_maxdelay = 0; 1320 1321 du->ldu_tlv_term.tlv_type = LACP_TYPE_TERMINATE; 1322 du->ldu_tlv_term.tlv_length = 0; 1323 1324 return m; 1325 } 1326 1327 static void 1328 lacp_sm_tx_work(struct lagg_work *lw, void *xlsc) 1329 { 1330 struct lacp_softc *lsc; 1331 struct lacp_port *lacpp; 1332 struct lagg_port *lp; 1333 struct lacpdu *du; 1334 struct mbuf *m; 1335 struct psref psref; 1336 int bound; 1337 1338 lsc = xlsc; 1339 lacpp = container_of(lw, struct lacp_port, lp_work_smtx); 1340 1341 if (lsc->lsc_stop_lacpdu) 1342 return; 1343 1344 LACP_LOCK(lsc); 1345 m = lacp_lacpdu_mbuf(lsc, lacpp); 1346 if (m == NULL) { 1347 LACP_UNLOCK(lsc); 1348 return; 1349 } 1350 lacp_sm_negate_ntt(lacpp); 1351 lp = lacpp->lp_laggport; 1352 bound = curlwp_bind(); 1353 lagg_port_getref(lp, &psref); 1354 LACP_UNLOCK(lsc); 1355 1356 if (LACP_ISDUMPING(lsc)) { 1357 lacp_dprintf(lsc, lacpp, "lacpdu transmit\n"); 1358 du = mtod(m, struct lacpdu *); 1359 lacp_dump_lacpdutlv(&du->ldu_actor, 1360 &du->ldu_partner, &du->ldu_collector); 1361 } 1362 1363 lagg_port_xmit(lp, m); 1364 lagg_port_putref(lp, &psref); 1365 curlwp_bindx(bound); 1366 } 1367 1368 static void 1369 lacp_sm_tx(struct lacp_softc *lsc, struct lacp_port *lacpp) 1370 { 1371 1372 if (!lacp_port_need_to_tell(lacpp)) 1373 return; 1374 1375 lagg_workq_add(lsc->lsc_workq, &lacpp->lp_work_smtx); 1376 } 1377 1378 static void 1379 lacp_tick(void *xlsc) 1380 { 1381 struct lacp_softc *lsc; 1382 1383 lsc = xlsc; 1384 1385 lagg_workq_add(lsc->lsc_workq, &lsc->lsc_work_tick); 1386 1387 LACP_LOCK(lsc); 1388 callout_schedule(&lsc->lsc_tick, hz); 1389 LACP_UNLOCK(lsc); 1390 } 1391 1392 static void 1393 lacp_run_timers(struct lacp_softc *lsc, struct lacp_port *lacpp) 1394 { 1395 size_t i; 1396 1397 for (i = 0; i < LACP_NTIMER; i++) { 1398 KASSERT(lacpp->lp_timer[i] >= 0); 1399 1400 if (lacpp->lp_timer[i] == 0) 1401 continue; 1402 if (--lacpp->lp_timer[i] > 0) 1403 continue; 1404 1405 KASSERT(lacp_timer_funcs[i] != NULL); 1406 lacp_timer_funcs[i](lsc, lacpp); 1407 } 1408 } 1409 1410 static void 1411 lacp_run_prototimers(struct lacp_softc *lsc) 1412 { 1413 size_t i; 1414 1415 for (i = 0; i < LACP_NPTIMER; i++) { 1416 KASSERT(lsc->lsc_timer[i] >= 0); 1417 1418 if (lsc->lsc_timer[i] == 0) 1419 continue; 1420 if (--lsc->lsc_timer[i] > 0) 1421 continue; 1422 1423 KASSERT(lacp_ptimer_funcs[i] != NULL); 1424 lacp_ptimer_funcs[i](lsc); 1425 } 1426 } 1427 1428 static void 1429 lacp_tick_work(struct lagg_work *lw __unused, void *xlsc) 1430 { 1431 struct lacp_softc *lsc; 1432 struct lacp_port *lacpp; 1433 struct lagg_softc *sc; 1434 struct lagg_port *lp; 1435 1436 lsc = xlsc; 1437 sc = lsc->lsc_softc; 1438 1439 LACP_LOCK(lsc); 1440 lacp_run_prototimers(lsc); 1441 LACP_UNLOCK(lsc); 1442 1443 LAGG_LOCK(sc); 1444 LACP_LOCK(lsc); 1445 LAGG_PORTS_FOREACH(sc, lp) { 1446 lacpp = lp->lp_proto_ctx; 1447 if (!ISSET(lacpp->lp_actor.lpi_state, 1448 LACP_STATE_AGGREGATION)) { 1449 continue; 1450 } 1451 1452 lacp_run_timers(lsc, lacpp); 1453 lacp_select(lsc, lacpp); 1454 lacp_sm_mux(lsc, lacpp); 1455 lacp_sm_tx(lsc, lacpp); 1456 lacp_sm_ptx_schedule(lacpp); 1457 } 1458 1459 LACP_UNLOCK(lsc); 1460 LAGG_UNLOCK(sc); 1461 } 1462 1463 static void 1464 lacp_systemid_str(char *buf, size_t buflen, 1465 uint16_t prio, const uint8_t *mac, uint16_t key) 1466 { 1467 1468 snprintf(buf, buflen, 1469 "%04X," 1470 "%02X-%02X-%02X-%02X-%02X-%02X," 1471 "%04X", 1472 (unsigned int)ntohs(prio), 1473 (int)mac[0], (int)mac[1], (int)mac[2], 1474 (int)mac[3], (int)mac[4], (int)mac[5], 1475 (unsigned int)htons(key)); 1476 1477 } 1478 1479 __LACPDEBUGUSED static void 1480 lacp_aggregator_str(struct lacp_aggregator *la, char *buf, size_t buflen) 1481 { 1482 1483 lacp_systemid_str(buf, buflen, la->la_sid.sid_prio, 1484 la->la_sid.sid_mac, la->la_sid.sid_key); 1485 } 1486 1487 static void 1488 lacp_peerinfo_idstr(const struct lacpdu_peerinfo *pi, 1489 char *buf, size_t buflen) 1490 { 1491 1492 lacp_systemid_str(buf, buflen, pi->lpi_system_prio, 1493 pi->lpi_system_mac, pi->lpi_key); 1494 } 1495 1496 static void 1497 lacp_state_str(uint8_t state, char *buf, size_t buflen) 1498 { 1499 1500 snprintb(buf, buflen, LACP_STATE_BITS, state); 1501 } 1502 1503 static struct lagg_port * 1504 lacp_select_tx_port(struct lacp_softc *lsc, struct mbuf *m, 1505 struct psref *psref) 1506 { 1507 struct lacp_portmap *pm; 1508 struct lagg_port *lp; 1509 uint32_t hash; 1510 size_t act; 1511 int s; 1512 1513 hash = lagg_hashmbuf(lsc->lsc_softc, m); 1514 1515 s = pserialize_read_enter(); 1516 act = LACP_PORTMAP_ACTIVE(lsc); 1517 pm = &lsc->lsc_portmaps[act]; 1518 1519 if (pm->pm_count == 0) { 1520 pserialize_read_exit(s); 1521 return NULL; 1522 } 1523 1524 hash %= pm->pm_count; 1525 lp = pm->pm_ports[hash]; 1526 lagg_port_getref(lp, psref); 1527 1528 pserialize_read_exit(s); 1529 1530 return lp; 1531 } 1532 1533 static void 1534 lacp_peerinfo_actor(struct lacp_softc *lsc, struct lacp_port *lacpp, 1535 struct lacpdu_peerinfo *dst) 1536 { 1537 1538 memcpy(dst->lpi_system_mac, lsc->lsc_system_mac, LACP_MAC_LEN); 1539 dst->lpi_system_prio = lsc->lsc_system_prio; 1540 dst->lpi_key = lsc->lsc_key; 1541 dst->lpi_port_no = lacpp->lp_actor.lpi_portno; 1542 dst->lpi_port_prio = lacpp->lp_actor.lpi_portprio; 1543 dst->lpi_state = lacpp->lp_actor.lpi_state; 1544 } 1545 1546 static void 1547 lacp_peerinfo_partner(struct lacp_port *lacpp, struct lacpdu_peerinfo *dst) 1548 { 1549 struct lacp_aggregator *la; 1550 1551 la = lacpp->lp_aggregator; 1552 1553 if (la != NULL) { 1554 memcpy(dst->lpi_system_mac, la->la_sid.sid_mac, LACP_MAC_LEN); 1555 dst->lpi_system_prio = la->la_sid.sid_prio; 1556 dst->lpi_key = la->la_sid.sid_key; 1557 } else { 1558 memset(dst->lpi_system_mac, 0, LACP_MAC_LEN); 1559 dst->lpi_system_prio = 0; 1560 dst->lpi_key = 0; 1561 } 1562 dst->lpi_port_no = lacpp->lp_partner.lpi_portno; 1563 dst->lpi_port_prio = lacpp->lp_partner.lpi_portprio; 1564 dst->lpi_state = lacpp->lp_partner.lpi_state; 1565 } 1566 1567 static int 1568 lacp_compare_peerinfo(struct lacpdu_peerinfo *a, struct lacpdu_peerinfo *b) 1569 { 1570 1571 return memcmp(a, b, offsetof(struct lacpdu_peerinfo, lpi_state)); 1572 } 1573 1574 static void 1575 lacp_sm_rx_record_default(struct lacp_softc *lsc, struct lacp_port *lacpp) 1576 { 1577 uint8_t oldpstate; 1578 struct lacp_portinfo *pi; 1579 char buf[LACP_STATESTR_LEN] __LACPDEBUGUSED; 1580 1581 pi = &lacpp->lp_partner; 1582 1583 oldpstate = pi->lpi_state; 1584 pi->lpi_portno = htons(LACP_PORTNO_NONE); 1585 pi->lpi_portprio = htons(0xffff); 1586 1587 if (lsc->lsc_optimistic) 1588 pi->lpi_state = LACP_PARTNER_ADMIN_OPTIMISTIC; 1589 else 1590 pi->lpi_state = LACP_PARTNER_ADMIN_STRICT; 1591 1592 SET(lacpp->lp_actor.lpi_state, LACP_STATE_DEFAULTED); 1593 1594 if (oldpstate != pi->lpi_state) { 1595 LACP_STATE_STR(oldpstate, buf, sizeof(buf)); 1596 LACP_DPRINTF((lsc, lacpp, "oldpstate %s\n", buf)); 1597 1598 LACP_STATE_STR(pi->lpi_state, buf, sizeof(buf)); 1599 LACP_DPRINTF((lsc, lacpp, "newpstate %s\n", buf)); 1600 } 1601 } 1602 1603 static inline bool 1604 lacp_port_is_synced(struct lacp_softc *lsc, struct lacp_port *lacpp, 1605 struct lacpdu_peerinfo *my_pi, struct lacpdu_peerinfo *peer_pi) 1606 { 1607 struct lacpdu_peerinfo actor; 1608 1609 if (!ISSET(peer_pi->lpi_state, LACP_STATE_ACTIVITY) && 1610 (!ISSET(my_pi->lpi_state, LACP_STATE_ACTIVITY) || 1611 !ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_ACTIVITY))) 1612 return false; 1613 1614 if (!ISSET(peer_pi->lpi_state, LACP_STATE_AGGREGATION)) 1615 return false; 1616 1617 lacp_peerinfo_actor(lsc, lacpp, &actor); 1618 if (lacp_compare_peerinfo(&actor, my_pi) != 0) 1619 return false; 1620 1621 if (!LACP_STATE_EQ(actor.lpi_state, my_pi->lpi_state, 1622 LACP_STATE_AGGREGATION)) { 1623 return false; 1624 } 1625 1626 return true; 1627 } 1628 1629 static void 1630 lacp_sm_rx_record_peerinfo(struct lacp_softc *lsc, struct lacp_port *lacpp, 1631 struct lacpdu_peerinfo *my_pi, struct lacpdu_peerinfo *peer_pi) 1632 { 1633 char buf[LACP_STATESTR_LEN] __LACPDEBUGUSED; 1634 uint8_t oldpstate; 1635 struct lacp_portinfo *pi; 1636 struct lacp_aggregator_systemid *sid; 1637 1638 pi = &lacpp->lp_partner; 1639 sid = &lacpp->lp_aggregator_sidbuf; 1640 1641 oldpstate = lacpp->lp_partner.lpi_state; 1642 1643 sid->sid_prio = peer_pi->lpi_system_prio; 1644 sid->sid_key = peer_pi->lpi_key; 1645 memcpy(sid->sid_mac, peer_pi->lpi_system_mac, 1646 sizeof(sid->sid_mac)); 1647 1648 pi->lpi_portno = peer_pi->lpi_port_no; 1649 pi->lpi_portprio = peer_pi->lpi_port_prio; 1650 pi->lpi_state = peer_pi->lpi_state; 1651 1652 if (lacp_port_is_synced(lsc, lacpp, my_pi, peer_pi)) { 1653 if (lsc->lsc_optimistic) 1654 SET(lacpp->lp_partner.lpi_state, LACP_STATE_SYNC); 1655 } else { 1656 CLR(lacpp->lp_partner.lpi_state, LACP_STATE_SYNC); 1657 } 1658 1659 CLR(lacpp->lp_actor.lpi_state, LACP_STATE_DEFAULTED); 1660 1661 if (oldpstate != lacpp->lp_partner.lpi_state) { 1662 LACP_STATE_STR(oldpstate, buf, sizeof(buf)); 1663 LACP_DPRINTF((lsc, lacpp, "oldpstate %s\n", buf)); 1664 1665 LACP_STATE_STR(lacpp->lp_partner.lpi_state, 1666 buf, sizeof(buf)); 1667 LACP_DPRINTF((lsc, lacpp, "newpstate %s\n", buf)); 1668 } 1669 1670 lacp_sm_ptx_update_timeout(lacpp, oldpstate); 1671 } 1672 1673 static void 1674 lacp_sm_rx_set_expired(struct lacp_port *lacpp) 1675 { 1676 1677 CLR(lacpp->lp_partner.lpi_state, LACP_STATE_SYNC); 1678 SET(lacpp->lp_partner.lpi_state, LACP_STATE_TIMEOUT); 1679 LACP_TIMER_ARM(lacpp, LACP_TIMER_CURRENT_WHILE, 1680 LACP_SHORT_TIMEOUT_TIME); 1681 SET(lacpp->lp_actor.lpi_state, LACP_STATE_EXPIRED); 1682 } 1683 1684 static void 1685 lacp_sm_port_init(struct lacp_softc *lsc, struct lacp_port *lacpp, 1686 struct lagg_port *lp) 1687 { 1688 1689 KASSERT(LACP_LOCKED(lsc)); 1690 1691 lacpp->lp_laggport = lp; 1692 lacpp->lp_actor.lpi_state = LACP_STATE_ACTIVITY; 1693 lacpp->lp_actor.lpi_portno = htons(if_get_index(lp->lp_ifp)); 1694 lacpp->lp_actor.lpi_portprio = htons(LACP_PORT_PRIO); 1695 lacpp->lp_partner.lpi_state = LACP_STATE_TIMEOUT; 1696 lacpp->lp_aggregator = NULL; 1697 lacpp->lp_marker_xid = 0; 1698 lacpp->lp_mux_state = LACP_MUX_INIT; 1699 1700 lacp_set_mux(lsc, lacpp, LACP_MUX_DETACHED); 1701 lacp_sm_rx_record_default(lsc, lacpp); 1702 } 1703 1704 static void 1705 lacp_port_disable(struct lacp_softc *lsc, struct lacp_port *lacpp) 1706 { 1707 1708 if (ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_AGGREGATION)) 1709 LACP_DPRINTF((lsc, lacpp, "enable -> disable\n")); 1710 1711 lacp_set_mux(lsc, lacpp, LACP_MUX_DETACHED); 1712 lacp_sm_rx_record_default(lsc, lacpp); 1713 CLR(lacpp->lp_actor.lpi_state, 1714 LACP_STATE_AGGREGATION | LACP_STATE_EXPIRED); 1715 CLR(lacpp->lp_partner.lpi_state, LACP_STATE_AGGREGATION); 1716 } 1717 1718 static void 1719 lacp_port_enable(struct lacp_softc *lsc __LACPDEBUGUSED, 1720 struct lacp_port *lacpp) 1721 { 1722 1723 if (!ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_AGGREGATION)) 1724 LACP_DPRINTF((lsc, lacpp, "disable -> enable\n")); 1725 1726 SET(lacpp->lp_actor.lpi_state, LACP_STATE_AGGREGATION); 1727 lacp_sm_rx_set_expired(lacpp); 1728 } 1729 1730 static void 1731 lacp_sm_rx_timer(struct lacp_softc *lsc, struct lacp_port *lacpp) 1732 { 1733 1734 if (!ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_EXPIRED)) { 1735 /* CURRENT -> EXPIRED */ 1736 LACP_DPRINTF((lsc, lacpp, "CURRENT -> EXPIRED\n")); 1737 lacp_sm_rx_set_expired(lacpp); 1738 } else { 1739 LACP_DPRINTF((lsc, lacpp, "EXPIRED -> DEFAULTED\n")); 1740 lacp_set_mux(lsc, lacpp, LACP_MUX_DETACHED); 1741 lacp_sm_rx_record_default(lsc, lacpp); 1742 } 1743 } 1744 1745 static void 1746 lacp_sm_ptx_timer(struct lacp_softc *lsc __unused, struct lacp_port *lacpp) 1747 { 1748 1749 lacp_sm_assert_ntt(lacpp); 1750 } 1751 1752 static void 1753 lacp_sm_ptx_schedule(struct lacp_port *lacpp) 1754 { 1755 int timeout; 1756 1757 /* no periodic */ 1758 if (!ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_ACTIVITY) && 1759 !ISSET(lacpp->lp_partner.lpi_state, LACP_STATE_ACTIVITY)) { 1760 LACP_TIMER_DISARM(lacpp, LACP_TIMER_PERIODIC); 1761 return; 1762 } 1763 1764 if (LACP_TIMER_ISARMED(lacpp, LACP_TIMER_PERIODIC)) 1765 return; 1766 1767 timeout = ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_TIMEOUT) ? 1768 LACP_FAST_PERIODIC_TIME : LACP_SLOW_PERIODIC_TIME; 1769 1770 LACP_TIMER_ARM(lacpp, LACP_TIMER_PERIODIC, timeout); 1771 } 1772 1773 static void 1774 lacp_sm_ptx_update_timeout(struct lacp_port *lacpp, uint8_t oldpstate) 1775 { 1776 1777 if (LACP_STATE_EQ(oldpstate, lacpp->lp_partner.lpi_state, 1778 LACP_STATE_TIMEOUT)) 1779 return; 1780 1781 LACP_DPRINTF((NULL, lacpp, "partner timeout changed\n")); 1782 1783 LACP_TIMER_DISARM(lacpp, LACP_TIMER_PERIODIC); 1784 1785 /* if timeout has been shorted, assert NTT */ 1786 if (ISSET(lacpp->lp_partner.lpi_state, LACP_STATE_TIMEOUT)) 1787 lacp_sm_assert_ntt(lacpp); 1788 } 1789 1790 static void 1791 lacp_sm_mux_timer(struct lacp_softc *lsc __LACPDEBUGUSED, 1792 struct lacp_port *lacpp) 1793 { 1794 char buf[LACP_SYSTEMIDSTR_LEN] __LACPDEBUGUSED; 1795 1796 KASSERT(lacpp->lp_pending > 0); 1797 1798 LACP_AGGREGATOR_STR(lacpp->lp_aggregator, buf, sizeof(buf)); 1799 LACP_DPRINTF((lsc, lacpp, "aggregator %s, pending %d -> %d\n", 1800 buf, lacpp->lp_pending, lacpp->lp_pending -1)); 1801 1802 lacpp->lp_pending--; 1803 } 1804 1805 static void 1806 lacp_sm_rx_update_selected(struct lacp_softc *lsc, struct lacp_port *lacpp, 1807 struct lacpdu_peerinfo *peer_pi) 1808 { 1809 struct lacpdu_peerinfo partner; 1810 char str0[LACP_SYSTEMIDSTR_LEN] __LACPDEBUGUSED; 1811 char str1[LACP_SYSTEMIDSTR_LEN] __LACPDEBUGUSED; 1812 1813 if (lacpp->lp_aggregator == NULL) 1814 return; 1815 1816 lacp_peerinfo_partner(lacpp, &partner); 1817 if (lacp_compare_peerinfo(peer_pi, &partner) != 0) { 1818 LACP_PEERINFO_IDSTR(&partner, str0, sizeof(str0)); 1819 LACP_PEERINFO_IDSTR(peer_pi, str1, sizeof(str1)); 1820 LACP_DPRINTF((lsc, lacpp, 1821 "different peerinfo, %s vs %s\n", str0, str1)); 1822 goto do_unselect; 1823 } 1824 1825 if (!LACP_STATE_EQ(lacpp->lp_partner.lpi_state, 1826 peer_pi->lpi_state, LACP_STATE_AGGREGATION)) { 1827 LACP_DPRINTF((lsc, lacpp, 1828 "STATE_AGGREGATION changed %d -> %d\n", 1829 ISSET(lacpp->lp_partner.lpi_state, 1830 LACP_STATE_AGGREGATION) != 0, 1831 ISSET(peer_pi->lpi_state, LACP_STATE_AGGREGATION) != 0)); 1832 goto do_unselect; 1833 } 1834 1835 return; 1836 1837 do_unselect: 1838 lacpp->lp_selected = LACP_UNSELECTED; 1839 /* lacpp->lp_aggregator will be released at lacp_set_mux() */ 1840 } 1841 1842 static void 1843 lacp_sm_rx_update_ntt(struct lacp_softc *lsc, struct lacp_port *lacpp, 1844 struct lacpdu_peerinfo *my_pi) 1845 { 1846 struct lacpdu_peerinfo actor; 1847 1848 lacp_peerinfo_actor(lsc, lacpp, &actor); 1849 1850 if (lacp_compare_peerinfo(&actor, my_pi) != 0 || 1851 !LACP_STATE_EQ(lacpp->lp_actor.lpi_state, my_pi->lpi_state, 1852 LACP_STATE_ACTIVITY | LACP_STATE_SYNC | LACP_STATE_AGGREGATION)) { 1853 LACP_DPRINTF((lsc, lacpp, "assert ntt\n")); 1854 lacp_sm_assert_ntt(lacpp); 1855 } 1856 } 1857 1858 static void 1859 lacp_sm_rx(struct lacp_softc *lsc, struct lacp_port *lacpp, 1860 struct lacpdu_peerinfo *my_pi, struct lacpdu_peerinfo *peer_pi) 1861 { 1862 int timeout; 1863 1864 KASSERT(LACP_LOCKED(lsc)); 1865 1866 /* check LACP disabled first */ 1867 if (!ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_AGGREGATION)) 1868 return; 1869 1870 /* check loopback condition */ 1871 if (memcmp(lsc->lsc_system_mac, peer_pi->lpi_system_mac, 1872 LACP_MAC_LEN) == 0 && 1873 lsc->lsc_system_prio == peer_pi->lpi_system_prio) 1874 return; 1875 1876 lacp_sm_rx_update_selected(lsc, lacpp, peer_pi); 1877 lacp_sm_rx_update_ntt(lsc, lacpp, my_pi); 1878 lacp_sm_rx_record_peerinfo(lsc, lacpp, my_pi, peer_pi); 1879 1880 timeout = ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_TIMEOUT) ? 1881 LACP_SHORT_TIMEOUT_TIME : LACP_LONG_TIMEOUT_TIME; 1882 LACP_TIMER_ARM(lacpp, LACP_TIMER_CURRENT_WHILE, timeout); 1883 1884 CLR(lacpp->lp_actor.lpi_state, LACP_STATE_EXPIRED); 1885 1886 /* kick transmit machine without timeout. */ 1887 lacp_sm_tx(lsc, lacpp); 1888 } 1889 1890 static void 1891 lacp_disable_collecting(struct lacp_port *lacpp) 1892 { 1893 1894 LACP_DPRINTF((NULL, lacpp, "collecting disabled\n")); 1895 CLR(lacpp->lp_actor.lpi_state, LACP_STATE_COLLECTING); 1896 atomic_store_relaxed(&lacpp->lp_collector, false); 1897 } 1898 1899 static void 1900 lacp_enable_collecting(struct lacp_port *lacpp) 1901 { 1902 LACP_DPRINTF((NULL, lacpp, "collecting enabled\n")); 1903 SET(lacpp->lp_actor.lpi_state, LACP_STATE_COLLECTING); 1904 atomic_store_relaxed(&lacpp->lp_collector, true); 1905 } 1906 1907 static void 1908 lacp_update_portmap(struct lacp_softc *lsc) 1909 { 1910 struct lagg_softc *sc; 1911 struct lacp_aggregator *la; 1912 struct lacp_portmap *pm_act, *pm_next; 1913 struct lacp_port *lacpp; 1914 size_t pmap, n; 1915 u_int link; 1916 1917 KASSERT(LACP_LOCKED(lsc)); 1918 1919 la = lsc->lsc_aggregator; 1920 1921 pmap = LACP_PORTMAP_ACTIVE(lsc); 1922 pm_act = &lsc->lsc_portmaps[pmap]; 1923 1924 pmap = LACP_PORTMAP_NEXT(lsc); 1925 pm_next = &lsc->lsc_portmaps[pmap]; 1926 1927 n = 0; 1928 if (la != NULL) { 1929 LIST_FOREACH(lacpp, &la->la_ports, lp_entry_la) { 1930 if (!ISSET(lacpp->lp_actor.lpi_state, 1931 LACP_STATE_DISTRIBUTING)) { 1932 continue; 1933 } 1934 1935 pm_next->pm_ports[n] = lacpp->lp_laggport; 1936 n++; 1937 1938 if (n >= LACP_MAX_PORTS) 1939 break; 1940 } 1941 } 1942 pm_next->pm_count = n; 1943 1944 atomic_store_release(&lsc->lsc_activemap, pmap); 1945 pserialize_perform(lsc->lsc_psz); 1946 1947 LACP_DPRINTF((lsc, NULL, "portmap count updated (%zu -> %zu)\n", 1948 pm_act->pm_count, pm_next->pm_count)); 1949 1950 link = lacp_portmap_linkstate(pm_next); 1951 if (link != lacp_portmap_linkstate(pm_act)) { 1952 sc = lsc->lsc_softc; 1953 if_link_state_change(&sc->sc_if, link); 1954 } 1955 1956 /* cleanup */ 1957 pm_act->pm_count = 0; 1958 memset(pm_act->pm_ports, 0, sizeof(pm_act->pm_ports)); 1959 } 1960 1961 static void 1962 lacp_disable_distributing(struct lacp_softc *lsc, struct lacp_port *lacpp) 1963 { 1964 struct lacp_portmap *pm; 1965 bool do_update; 1966 size_t act, i; 1967 int s; 1968 1969 KASSERT(LACP_LOCKED(lsc)); 1970 1971 LACP_DPRINTF((lsc, lacpp, "distributing disabled\n")); 1972 CLR(lacpp->lp_actor.lpi_state, LACP_STATE_DISTRIBUTING); 1973 1974 s = pserialize_read_enter(); 1975 act = LACP_PORTMAP_ACTIVE(lsc); 1976 pm = &lsc->lsc_portmaps[act]; 1977 1978 do_update = false; 1979 for (i = 0; i < pm->pm_count; i++) { 1980 if (pm->pm_ports[i] == lacpp->lp_laggport) { 1981 do_update = true; 1982 break; 1983 } 1984 } 1985 pserialize_read_exit(s); 1986 1987 if (do_update) 1988 lacp_update_portmap(lsc); 1989 } 1990 1991 static void 1992 lacp_enable_distributing(struct lacp_softc *lsc, struct lacp_port *lacpp) 1993 { 1994 1995 KASSERT(LACP_LOCKED(lsc)); 1996 1997 KASSERT(lacp_isactive(lsc, lacpp)); 1998 1999 LACP_DPRINTF((lsc, lacpp, "distributing enabled\n")); 2000 SET(lacpp->lp_actor.lpi_state, LACP_STATE_DISTRIBUTING); 2001 lacp_suppress_distributing(lsc); 2002 lacp_update_portmap(lsc); 2003 } 2004 2005 static void 2006 lacp_select_active_aggregator(struct lacp_softc *lsc) 2007 { 2008 struct lacp_aggregator *la, *best_la; 2009 char str[LACP_SYSTEMIDSTR_LEN] __LACPDEBUGUSED; 2010 2011 KASSERT(LACP_LOCKED(lsc)); 2012 2013 la = lsc->lsc_aggregator; 2014 if (la != NULL && la->la_attached_port > 0) { 2015 best_la = la; 2016 } else { 2017 best_la = NULL; 2018 } 2019 2020 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 2021 if (la->la_attached_port <= 0) 2022 continue; 2023 2024 if (best_la == NULL || 2025 LACP_SYS_PRI(la) < LACP_SYS_PRI(best_la)) 2026 best_la = la; 2027 } 2028 2029 if (best_la != lsc->lsc_aggregator) { 2030 LACP_DPRINTF((lsc, NULL, "active aggregator changed\n")); 2031 2032 if (lsc->lsc_aggregator != NULL) { 2033 LACP_AGGREGATOR_STR(lsc->lsc_aggregator, 2034 str, sizeof(str)); 2035 } else { 2036 snprintf(str, sizeof(str), "(null)"); 2037 } 2038 LACP_DPRINTF((lsc, NULL, "old aggregator=%s\n", str)); 2039 2040 if (best_la != NULL) { 2041 LACP_AGGREGATOR_STR(best_la, str, sizeof(str)); 2042 } else { 2043 snprintf(str, sizeof(str), "(null)"); 2044 } 2045 LACP_DPRINTF((lsc, NULL, "new aggregator=%s\n", str)); 2046 2047 lsc->lsc_aggregator = best_la; 2048 } 2049 } 2050 2051 static void 2052 lacp_port_attached(struct lacp_softc *lsc, struct lacp_port *lacpp) 2053 { 2054 struct lacp_aggregator *la; 2055 2056 KASSERT(LACP_LOCKED(lsc)); 2057 2058 if (ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_SYNC)) 2059 return; 2060 2061 la = lacpp->lp_aggregator; 2062 KASSERT(la != NULL); 2063 KASSERT(la->la_attached_port >= 0); 2064 2065 SET(lacpp->lp_actor.lpi_state, LACP_STATE_SYNC); 2066 la->la_attached_port++; 2067 lacp_select_active_aggregator(lsc); 2068 } 2069 2070 static void 2071 lacp_port_detached(struct lacp_softc *lsc, struct lacp_port *lacpp) 2072 { 2073 struct lacp_aggregator *la; 2074 2075 KASSERT(LACP_LOCKED(lsc)); 2076 2077 if (!ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_SYNC)) 2078 return; 2079 2080 la = lacpp->lp_aggregator; 2081 KASSERT(la != NULL); 2082 KASSERT(la->la_attached_port > 0); 2083 2084 CLR(lacpp->lp_actor.lpi_state, LACP_STATE_SYNC); 2085 la->la_attached_port--; 2086 lacp_select_active_aggregator(lsc); 2087 } 2088 2089 static int 2090 lacp_set_mux(struct lacp_softc *lsc, struct lacp_port *lacpp, 2091 enum lacp_mux_state new_state) 2092 { 2093 struct lagg_softc *sc; 2094 struct ifnet *ifp; 2095 2096 KASSERT(LACP_LOCKED(lsc)); 2097 2098 sc = lacpp->lp_laggport->lp_softc; 2099 ifp = &sc->sc_if; 2100 2101 if (lacpp->lp_mux_state == new_state) { 2102 return -1; 2103 } 2104 2105 switch (new_state) { 2106 case LACP_MUX_DETACHED: 2107 lacp_port_detached(lsc, lacpp); 2108 lacp_disable_distributing(lsc, lacpp); 2109 lacp_disable_collecting(lacpp); 2110 lacp_sm_assert_ntt(lacpp); 2111 /* cancel timer */ 2112 if (LACP_TIMER_ISARMED(lacpp, LACP_TIMER_WAIT_WHILE)) { 2113 KASSERT(lacpp->lp_pending > 0); 2114 lacpp->lp_pending--; 2115 LACP_TIMER_DISARM(lacpp, LACP_TIMER_WAIT_WHILE); 2116 } 2117 lacp_unselect(lsc, lacpp); 2118 break; 2119 case LACP_MUX_WAITING: 2120 LACP_TIMER_ARM(lacpp, LACP_TIMER_WAIT_WHILE, 2121 LACP_AGGREGATE_WAIT_TIME); 2122 lacpp->lp_pending++; 2123 break; 2124 case LACP_MUX_ATTACHED: 2125 lacp_port_attached(lsc, lacpp); 2126 lacp_disable_collecting(lacpp); 2127 lacp_sm_assert_ntt(lacpp); 2128 break; 2129 case LACP_MUX_COLLECTING: 2130 lacp_enable_collecting(lacpp); 2131 lacp_disable_distributing(lsc, lacpp); 2132 lacp_sm_assert_ntt(lacpp); 2133 break; 2134 case LACP_MUX_DISTRIBUTING: 2135 lacp_enable_distributing(lsc, lacpp); 2136 break; 2137 case LACP_MUX_INIT: 2138 default: 2139 panic("%s: unknown state", ifp->if_xname); 2140 } 2141 2142 LACP_DPRINTF((lsc, lacpp, "mux_state %d -> %d\n", 2143 lacpp->lp_mux_state, new_state)); 2144 2145 lacpp->lp_mux_state = new_state; 2146 return 0; 2147 } 2148 2149 static void 2150 lacp_sm_mux(struct lacp_softc *lsc, struct lacp_port *lacpp) 2151 { 2152 struct lacp_aggregator *la __diagused; 2153 enum lacp_mux_state next_state; 2154 enum lacp_selected selected; 2155 bool p_sync, p_collecting; 2156 2157 p_sync = ISSET(lacpp->lp_partner.lpi_state, LACP_STATE_SYNC); 2158 p_collecting = ISSET(lacpp->lp_partner.lpi_state, 2159 LACP_STATE_COLLECTING); 2160 2161 do { 2162 next_state = lacpp->lp_mux_state; 2163 la = lacpp->lp_aggregator; 2164 selected = lacpp->lp_selected; 2165 KASSERT(la != NULL || 2166 lacpp->lp_mux_state == LACP_MUX_DETACHED); 2167 2168 switch (lacpp->lp_mux_state) { 2169 case LACP_MUX_DETACHED: 2170 if (selected != LACP_UNSELECTED) 2171 next_state = LACP_MUX_WAITING; 2172 break; 2173 case LACP_MUX_WAITING: 2174 KASSERTMSG((lacpp->lp_pending > 0 || 2175 !LACP_TIMER_ISARMED(lacpp, LACP_TIMER_WAIT_WHILE)), 2176 "lp_pending=%d, timer=%d", lacpp->lp_pending, 2177 !LACP_TIMER_ISARMED(lacpp, LACP_TIMER_WAIT_WHILE)); 2178 2179 if (selected == LACP_SELECTED && 2180 lacpp->lp_pending == 0) { 2181 next_state = LACP_MUX_ATTACHED; 2182 } else if (selected == LACP_UNSELECTED) { 2183 next_state = LACP_MUX_DETACHED; 2184 } 2185 break; 2186 case LACP_MUX_ATTACHED: 2187 if (selected != LACP_SELECTED) { 2188 next_state = LACP_MUX_DETACHED; 2189 } else if (lacp_isactive(lsc, lacpp) && p_sync) { 2190 next_state = LACP_MUX_COLLECTING; 2191 } 2192 break; 2193 case LACP_MUX_COLLECTING: 2194 if (selected != LACP_SELECTED || 2195 !lacp_isactive(lsc, lacpp) 2196 || !p_sync) { 2197 next_state = LACP_MUX_ATTACHED; 2198 } else if (p_collecting) { 2199 next_state = LACP_MUX_DISTRIBUTING; 2200 } 2201 break; 2202 case LACP_MUX_DISTRIBUTING: 2203 if (selected != LACP_SELECTED || 2204 !lacp_isactive(lsc, lacpp) 2205 || !p_sync || !p_collecting) { 2206 next_state = LACP_MUX_COLLECTING; 2207 LACP_DPRINTF((lsc, lacpp, 2208 "Interface stopped DISTRIBUTING," 2209 " possible flapping\n")); 2210 } 2211 break; 2212 case LACP_MUX_INIT: 2213 default: 2214 panic("%s: unknown state", 2215 lsc->lsc_softc->sc_if.if_xname); 2216 } 2217 } while (lacp_set_mux(lsc, lacpp, next_state) == 0); 2218 } 2219 2220 static bool 2221 lacp_aggregator_is_match(struct lacp_aggregator_systemid *a, 2222 struct lacp_aggregator_systemid *b) 2223 { 2224 2225 if (a->sid_prio != b->sid_prio) 2226 return false; 2227 2228 if (a->sid_key != b->sid_key) 2229 return false; 2230 2231 if (memcmp(a->sid_mac, b->sid_mac, sizeof(a->sid_mac)) != 0) 2232 return false; 2233 2234 return true; 2235 } 2236 2237 static void 2238 lacp_selected_update(struct lacp_softc *lsc, struct lacp_aggregator *la) 2239 { 2240 struct lacp_port *lacpp; 2241 size_t nselected; 2242 uint32_t media; 2243 2244 KASSERT(LACP_LOCKED(lsc)); 2245 2246 lacpp = LIST_FIRST(&la->la_ports); 2247 if (lacpp == NULL) 2248 return; 2249 2250 media = lacpp->lp_media; 2251 nselected = 0; 2252 LIST_FOREACH(lacpp, &la->la_ports, lp_entry_la) { 2253 if (nselected >= lsc->lsc_max_ports || 2254 (!lsc->lsc_multi_linkspeed && media != lacpp->lp_media)) { 2255 if (lacpp->lp_selected == LACP_SELECTED) 2256 lacpp->lp_selected = LACP_STANDBY; 2257 continue; 2258 } 2259 2260 switch (lacpp->lp_selected) { 2261 case LACP_STANDBY: 2262 lacpp->lp_selected = LACP_SELECTED; 2263 /* fall through */ 2264 case LACP_SELECTED: 2265 nselected++; 2266 break; 2267 default: 2268 /* do nothing */ 2269 break; 2270 } 2271 } 2272 } 2273 2274 static void 2275 lacp_select(struct lacp_softc *lsc, struct lacp_port *lacpp) 2276 { 2277 struct lacp_aggregator *la; 2278 struct lacp_aggregator_systemid *sid; 2279 struct lacp_port *lacpp0; 2280 char buf[LACP_SYSTEMIDSTR_LEN] __LACPDEBUGUSED; 2281 bool insert_after; 2282 2283 if (lacpp->lp_aggregator != NULL) 2284 return; 2285 2286 /* If we haven't heard from our peer, skip this step. */ 2287 if (ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_DEFAULTED)) 2288 return 2289 2290 KASSERT(!LACP_TIMER_ISARMED(lacpp, LACP_TIMER_WAIT_WHILE)); 2291 2292 sid = &lacpp->lp_aggregator_sidbuf; 2293 2294 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 2295 if (lacp_aggregator_is_match(&la->la_sid, sid)) 2296 break; 2297 } 2298 2299 if (la == NULL) { 2300 la = kmem_zalloc(sizeof(*la), KM_NOSLEEP); 2301 if (la == NULL) { 2302 LACP_DPRINTF((lsc, lacpp, 2303 "couldn't allocate aggregator\n")); 2304 /* will retry the next tick. */ 2305 return; 2306 } 2307 LIST_INIT(&la->la_ports); 2308 2309 la->la_sid = *sid; 2310 TAILQ_INSERT_TAIL(&lsc->lsc_aggregators, la, la_q); 2311 LACP_DPRINTF((lsc, lacpp, "a new aggregator created\n")); 2312 } else { 2313 LACP_DPRINTF((lsc, lacpp, "aggregator found\n")); 2314 } 2315 2316 KASSERT(la != NULL); 2317 LACP_AGGREGATOR_STR(la, buf, sizeof(buf)); 2318 LACP_DPRINTF((lsc, lacpp, "aggregator lagid=%s\n", buf)); 2319 2320 lacpp->lp_aggregator = la; 2321 lacpp->lp_selected = LACP_STANDBY; 2322 2323 insert_after = false; 2324 2325 LIST_FOREACH(lacpp0, &la->la_ports, lp_entry_la) { 2326 if (lacp_port_priority_max(lacpp0, lacpp) == lacpp) 2327 break; 2328 2329 if (LIST_NEXT(lacpp0, lp_entry_la) == NULL) { 2330 insert_after = true; 2331 break; 2332 } 2333 } 2334 2335 if (lacpp0 == NULL) { 2336 LIST_INSERT_HEAD(&la->la_ports, lacpp, lp_entry_la); 2337 } else if (insert_after) { 2338 LIST_INSERT_AFTER(lacpp0, lacpp, lp_entry_la); 2339 } else { 2340 LIST_INSERT_BEFORE(lacpp0, lacpp, lp_entry_la); 2341 } 2342 2343 lacp_selected_update(lsc, la); 2344 } 2345 2346 static void 2347 lacp_unselect(struct lacp_softc *lsc, struct lacp_port *lacpp) 2348 { 2349 struct lacp_aggregator *la; 2350 char buf[LACP_SYSTEMIDSTR_LEN] __LACPDEBUGUSED; 2351 bool remove_actaggr; 2352 2353 KASSERT(LACP_LOCKED(lsc)); 2354 KASSERT(!LACP_TIMER_ISARMED(lacpp, LACP_TIMER_WAIT_WHILE)); 2355 2356 la = lacpp->lp_aggregator; 2357 lacpp->lp_selected = LACP_UNSELECTED; 2358 2359 if (la == NULL) 2360 return; 2361 2362 KASSERT(!LIST_EMPTY(&la->la_ports)); 2363 2364 LACP_AGGREGATOR_STR(la, buf, sizeof(buf)); 2365 LACP_DPRINTF((lsc, lacpp, "unselect aggregator lagid=%s\n", buf)); 2366 2367 LIST_REMOVE(lacpp, lp_entry_la); 2368 lacpp->lp_aggregator = NULL; 2369 2370 if (LIST_EMPTY(&la->la_ports)) { 2371 remove_actaggr = false; 2372 2373 if (la == lsc->lsc_aggregator) { 2374 LACP_DPRINTF((lsc, NULL, "remove active aggregator\n")); 2375 lsc->lsc_aggregator = NULL; 2376 remove_actaggr = true; 2377 } 2378 2379 TAILQ_REMOVE(&lsc->lsc_aggregators, la, la_q); 2380 kmem_free(la, sizeof(*la)); 2381 2382 if (remove_actaggr) { 2383 lacp_select_active_aggregator(lsc); 2384 } 2385 } else { 2386 lacp_selected_update(lsc, la); 2387 } 2388 } 2389 2390 static void 2391 lacp_suppress_distributing(struct lacp_softc *lsc) 2392 { 2393 struct lacp_aggregator *la; 2394 struct lacp_port *lacpp; 2395 2396 KASSERT(LACP_LOCKED(lsc)); 2397 2398 la = lsc->lsc_aggregator; 2399 2400 LIST_FOREACH(lacpp, &la->la_ports, lp_entry_la) { 2401 if (ISSET(lacpp->lp_actor.lpi_state, 2402 LACP_STATE_DISTRIBUTING)) { 2403 lagg_workq_add(lsc->lsc_workq, 2404 &lacpp->lp_work_marker); 2405 } 2406 } 2407 2408 LACP_PTIMER_ARM(lsc, LACP_PTIMER_DISTRIBUTING, 2409 LACP_TRANSIT_DELAY); 2410 } 2411 2412 static void 2413 lacp_distributing_timer(struct lacp_softc *lsc) 2414 { 2415 2416 KASSERT(LACP_LOCKED(lsc)); 2417 2418 if (lsc->lsc_suppress_distributing) { 2419 LACP_DPRINTF((lsc, NULL, 2420 "disable suppress distributing\n")); 2421 lsc->lsc_suppress_distributing = false; 2422 } 2423 } 2424 2425 static struct mbuf * 2426 lacp_markerdu_mbuf(struct lacp_softc *lsc, struct lacp_port *lacpp) 2427 { 2428 struct ifnet *ifp_port; 2429 struct mbuf *m; 2430 struct markerdu *mdu; 2431 struct markerdu_info *mi; 2432 2433 KASSERT(LACP_LOCKED(lsc)); 2434 2435 ifp_port = lacpp->lp_laggport->lp_ifp; 2436 2437 MGETHDR(m, M_DONTWAIT, MT_DATA); 2438 if (m == NULL) { 2439 lsc->lsc_mgethdr_failed.ev_count++; 2440 return NULL; 2441 } 2442 2443 m->m_pkthdr.len = m->m_len = sizeof(*mdu); 2444 2445 mdu = mtod(m, struct markerdu *); 2446 2447 memset(mdu, 0, sizeof(*mdu)); 2448 2449 m->m_flags |= M_MCAST; 2450 memcpy(mdu->mdu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 2451 ETHER_ADDR_LEN); 2452 memcpy(mdu->mdu_eh.ether_shost, CLLADDR(ifp_port->if_sadl), 2453 ETHER_ADDR_LEN); 2454 mdu->mdu_eh.ether_type = ntohs(ETHERTYPE_SLOWPROTOCOLS); 2455 mdu->mdu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_MARKER; 2456 mdu->mdu_sph.sph_version = 1; 2457 2458 mi = &mdu->mdu_info; 2459 tlv_set(&mdu->mdu_tlv_info, MARKER_TYPE_INFO, 2460 sizeof(*mi)); 2461 mi->mi_rq_port = lacpp->lp_actor.lpi_portno; 2462 mi->mi_rq_xid = htonl(lacpp->lp_marker_xid); 2463 memcpy(mi->mi_rq_system, lsc->lsc_system_mac, LACP_MAC_LEN); 2464 2465 mdu->mdu_tlv_term.tlv_type = MARKER_TYPE_TERMINATE; 2466 mdu->mdu_tlv_term.tlv_length = 0; 2467 2468 return m; 2469 } 2470 2471 static void 2472 lacp_marker_work(struct lagg_work *lw, void *xlsc) 2473 { 2474 struct lacp_softc *lsc; 2475 struct lacp_port *lacpp; 2476 struct lagg_port *lp; 2477 struct markerdu *mdu; 2478 struct mbuf *m; 2479 struct psref psref; 2480 int bound; 2481 2482 lsc = xlsc; 2483 lacpp = container_of(lw, struct lacp_port, lp_work_marker); 2484 2485 LACP_LOCK(lsc); 2486 lacpp->lp_marker_xid++; 2487 m = lacp_markerdu_mbuf(lsc, lacpp); 2488 if (m == NULL) { 2489 LACP_UNLOCK(lsc); 2490 return; 2491 } 2492 SET(lacpp->lp_flags, LACP_PORT_MARK); 2493 lsc->lsc_suppress_distributing = true; 2494 lp = lacpp->lp_laggport; 2495 bound = curlwp_bind(); 2496 lagg_port_getref(lp, &psref); 2497 LACP_UNLOCK(lsc); 2498 2499 if (LACP_ISDUMPING(lsc)) { 2500 lacp_dprintf(lsc, lacpp, "markerdu transmit\n"); 2501 mdu = mtod(m, struct markerdu *); 2502 lacp_dump_markertlv(&mdu->mdu_info, NULL); 2503 } 2504 2505 lagg_port_xmit(lp, m); 2506 lagg_port_putref(lp, &psref); 2507 curlwp_bindx(bound); 2508 } 2509 2510 static void 2511 lacp_dump_lacpdutlv(const struct lacpdu_peerinfo *pi_actor, 2512 const struct lacpdu_peerinfo *pi_partner, 2513 const struct lacpdu_collectorinfo *lci) 2514 { 2515 char str[LACP_STATESTR_LEN]; 2516 2517 if (pi_actor != NULL) { 2518 lacp_peerinfo_idstr(pi_actor, str, sizeof(str)); 2519 printf("actor=%s\n", str); 2520 lacp_state_str(pi_actor->lpi_state, 2521 str, sizeof(str)); 2522 printf("actor.state=%s portno=%d portprio=0x%04x\n", 2523 str, 2524 ntohs(pi_actor->lpi_port_no), 2525 ntohs(pi_actor->lpi_port_prio));; 2526 } else { 2527 printf("no actor info\n"); 2528 } 2529 2530 if (pi_partner != NULL) { 2531 lacp_peerinfo_idstr(pi_partner, str, sizeof(str)); 2532 printf("partner=%s\n", str); 2533 lacp_state_str(pi_partner->lpi_state, 2534 str, sizeof(str)); 2535 printf("partner.state=%s portno=%d portprio=0x%04x\n", 2536 str, 2537 ntohs(pi_partner->lpi_port_no), 2538 ntohs(pi_partner->lpi_port_prio)); 2539 } else { 2540 printf("no partner info\n"); 2541 } 2542 2543 if (lci != NULL) { 2544 printf("maxdelay=%d\n", ntohs(lci->lci_maxdelay)); 2545 } else { 2546 printf("no collector info\n"); 2547 } 2548 } 2549 2550 static void 2551 lacp_dump_markertlv(const struct markerdu_info *mi_info, 2552 const struct markerdu_info *mi_res) 2553 { 2554 2555 if (mi_info != NULL) { 2556 printf("marker info: port=%d, sys=%s, id=%u\n", 2557 ntohs(mi_info->mi_rq_port), 2558 ether_sprintf(mi_info->mi_rq_system), 2559 ntohl(mi_info->mi_rq_xid)); 2560 } 2561 2562 if (mi_res != NULL) { 2563 printf("marker resp: port=%d, sys=%s, id=%u\n", 2564 ntohs(mi_res->mi_rq_port), 2565 ether_sprintf(mi_res->mi_rq_system), 2566 ntohl(mi_res->mi_rq_xid)); 2567 2568 } 2569 } 2570 2571 static uint32_t 2572 lacp_ifmedia2lacpmedia(u_int ifmedia) 2573 { 2574 uint32_t rv; 2575 2576 switch (IFM_SUBTYPE(ifmedia)) { 2577 case IFM_10_T: 2578 case IFM_10_2: 2579 case IFM_10_5: 2580 case IFM_10_STP: 2581 case IFM_10_FL: 2582 rv = LACP_LINKSPEED_10; 2583 break; 2584 case IFM_100_TX: 2585 case IFM_100_FX: 2586 case IFM_100_T4: 2587 case IFM_100_VG: 2588 case IFM_100_T2: 2589 rv = LACP_LINKSPEED_100; 2590 break; 2591 case IFM_1000_SX: 2592 case IFM_1000_LX: 2593 case IFM_1000_CX: 2594 case IFM_1000_T: 2595 case IFM_1000_BX10: 2596 case IFM_1000_KX: 2597 rv = LACP_LINKSPEED_1000; 2598 break; 2599 case IFM_2500_SX: 2600 case IFM_2500_KX: 2601 rv = LACP_LINKSPEED_2500; 2602 break; 2603 case IFM_5000_T: 2604 rv = LACP_LINKSPEED_5000; 2605 break; 2606 case IFM_10G_LR: 2607 case IFM_10G_SR: 2608 case IFM_10G_CX4: 2609 case IFM_10G_TWINAX: 2610 case IFM_10G_TWINAX_LONG: 2611 case IFM_10G_LRM: 2612 case IFM_10G_T: 2613 rv = LACP_LINKSPEED_10G; 2614 break; 2615 default: 2616 rv = LACP_LINKSPEED_UNKNOWN; 2617 } 2618 2619 if (IFM_TYPE(ifmedia) == IFM_ETHER) 2620 SET(rv, LACP_MEDIA_ETHER); 2621 if ((ifmedia & IFM_FDX) != 0) 2622 SET(rv, LACP_MEDIA_FDX); 2623 2624 return rv; 2625 } 2626
Indexes created Mon Sep 29 21:09:56 GMT 2025