if_lagg_lacp.c revision 1.12
1 /* $NetBSD: if_lagg_lacp.c,v 1.12 2022/01/12 08:23:53 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 1.12 2022/01/12 08:23:53 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/ether_slowprotocols.h> 56 57 #include <net/lagg/if_lagg.h> 58 #include <net/lagg/if_laggproto.h> 59 #include <net/lagg/if_lagg_lacp.h> 60 61 #define LACP_SYSTEMIDSTR_LEN 32 62 63 enum { 64 LACP_TIMER_CURRENT_WHILE = 0, 65 LACP_TIMER_PERIODIC, 66 LACP_TIMER_WAIT_WHILE, 67 LACP_NTIMER 68 }; 69 70 enum { 71 LACP_PTIMER_DISTRIBUTING = 0, 72 LACP_NPTIMER 73 }; 74 75 enum lacp_selected { 76 LACP_UNSELECTED, 77 LACP_STANDBY, 78 LACP_SELECTED, 79 }; 80 81 enum lacp_mux_state { 82 LACP_MUX_DETACHED, 83 LACP_MUX_WAITING, 84 LACP_MUX_STANDBY, 85 LACP_MUX_ATTACHED, 86 LACP_MUX_COLLECTING, 87 LACP_MUX_DISTRIBUTING, 88 LACP_MUX_INIT, 89 }; 90 91 struct lacp_aggregator_systemid { 92 uint16_t sid_prio; 93 uint16_t sid_key; 94 uint8_t sid_mac[LACP_MAC_LEN]; 95 }; 96 97 struct lacp_aggregator { 98 TAILQ_ENTRY(lacp_aggregator) 99 la_q; 100 LIST_HEAD(, lacp_port) 101 la_ports; 102 ssize_t la_attached_port; 103 104 struct lacp_aggregator_systemid 105 la_sid; 106 }; 107 108 struct lacp_portinfo { 109 uint8_t lpi_state; 110 uint16_t lpi_portno; 111 #define LACP_PORTNO_NONE 0 112 uint16_t lpi_portprio; 113 }; 114 115 struct lacp_port { 116 struct lagg_port *lp_laggport; 117 bool lp_added_multi; 118 int lp_timer[LACP_NTIMER]; 119 uint32_t lp_marker_xid; 120 enum lacp_selected lp_selected; 121 enum lacp_mux_state lp_mux_state; 122 123 struct lacp_portinfo lp_actor; 124 struct lacp_portinfo lp_partner; 125 struct lacp_aggregator *lp_aggregator; 126 struct lacp_aggregator_systemid 127 lp_aggregator_sidbuf; 128 uint32_t lp_media; 129 int lp_pending; 130 LIST_ENTRY(lacp_port) lp_entry_la; 131 struct timeval lp_last_lacpdu; 132 int lp_lacpdu_sent; 133 bool lp_collector; 134 135 unsigned int lp_flags; 136 #define LACP_PORT_NTT __BIT(0) 137 #define LACP_PORT_MARK __BIT(1) 138 139 struct lagg_work lp_work_smtx; 140 struct lagg_work lp_work_marker; 141 }; 142 143 struct lacp_portmap { 144 size_t pm_count; 145 struct lagg_port *pm_ports[LACP_MAX_PORTS]; 146 }; 147 148 struct lacp_softc { 149 struct lagg_softc *lsc_softc; 150 kmutex_t lsc_lock; 151 pserialize_t lsc_psz; 152 bool lsc_running; 153 bool lsc_suppress_distributing; 154 int lsc_timer[LACP_NPTIMER]; 155 uint8_t lsc_system_mac[LACP_MAC_LEN]; 156 uint16_t lsc_system_prio; 157 uint16_t lsc_key; 158 size_t lsc_max_ports; 159 size_t lsc_activemap; 160 struct lacp_portmap lsc_portmaps[2]; /* active & idle */ 161 struct lacp_aggregator *lsc_aggregator; 162 TAILQ_HEAD(, lacp_aggregator) 163 lsc_aggregators; 164 struct workqueue *lsc_workq; 165 struct lagg_work lsc_work_tick; 166 callout_t lsc_tick; 167 168 char lsc_evgroup[32]; 169 struct evcnt lsc_mgethdr_failed; 170 struct evcnt lsc_mpullup_failed; 171 struct evcnt lsc_badlacpdu; 172 struct evcnt lsc_badmarkerdu; 173 174 bool lsc_optimistic; 175 bool lsc_stop_lacpdu; 176 bool lsc_dump_du; 177 bool lsc_multi_linkspeed; 178 }; 179 180 /* 181 * Locking notes: 182 * - Items in struct lacp_softc are protected by 183 * lsc_lock (an adaptive mutex) 184 * - lsc_activemap is protected by pserialize (lsc_psz) 185 * - Items of struct lagg_port in lsc_portmaps are protected by 186 * protected by both pserialize (lsc_psz) and psref (lp_psref) 187 * - Updates for lsc_activemap and lsc_portmaps is serialized by 188 * sc_lock in struct lagg_softc 189 * - Other locking notes are described in if_laggproto.h 190 */ 191 192 static void lacp_dprintf(const struct lacp_softc *, 193 const struct lacp_port *, const char *, ...) 194 __attribute__((__format__(__printf__, 3, 4))); 195 196 #ifdef LACP_DEBUG 197 #define LACP_DPRINTF(a) do { lacp_dprintf a; } while (/*CONSTCOND*/ 0) 198 #define LACP_PEERINFO_IDSTR(_pi, _b, _bs) \ 199 lacp_peerinfo_idstr(_pi, _b, _bs) 200 #define LACP_STATE_STR(_s, _b, _bs) lacp_state_str(_s, _b, _bs) 201 #define LACP_AGGREGATOR_STR(_a, _b, _bs) \ 202 lacp_aggregator_str(_a, _b, _bs) 203 #define __LACPDEBUGUSED 204 #else 205 #define LACP_DPRINTF(a) __nothing 206 #define LACP_PEERINFO_IDSTR(_pi, _b, _bs) __nothing 207 #define LACP_STATE_STR(_s, _b, _bs) __nothing 208 #define LACP_AGGREGATOR_STR(_a, _b, _bs) __nothing 209 #define __LACPDEBUGUSED __unused 210 #endif 211 212 #define LACP_LOCK(_sc) mutex_enter(&(_sc)->lsc_lock) 213 #define LACP_UNLOCK(_sc) mutex_exit(&(_sc)->lsc_lock) 214 #define LACP_LOCKED(_sc) mutex_owned(&(_sc)->lsc_lock) 215 #define LACP_TIMER_ARM(_lacpp, _timer, _val) \ 216 (_lacpp)->lp_timer[(_timer)] = (_val) 217 #define LACP_TIMER_DISARM(_lacpp, _timer) \ 218 LACP_TIMER_ARM((_lacpp), (_timer), 0) 219 #define LACP_TIMER_ISARMED(_lacpp, _timer) \ 220 ((_lacpp)->lp_timer[(_timer)] > 0) 221 #define LACP_PTIMER_ARM(_sc, _timer, _val) \ 222 (_sc)->lsc_timer[(_timer)] = (_val) 223 #define LACP_PTIMER_DISARM(_sc, _timer) \ 224 LACP_PTIMER_ARM((_sc), (_timer), 0) 225 #define LACP_PTIMER_ISARMED(_sc, _timer) \ 226 ((_sc)->lsc_timer[(_timer)] > 0) 227 #define LACP_STATE_EQ(_s1, _s2, _mask) (!ISSET((_s1) ^ (_s2), (_mask))) 228 #define LACP_PORT_XNAME(_lacpp) (_lacpp != NULL) ? \ 229 (_lacpp)->lp_laggport->lp_ifp->if_xname : "(unknown)" 230 #define LACP_ISDUMPING(_sc) (_sc)->lsc_dump_du 231 #define LACP_PORTMAP_ACTIVE(_sc) \ 232 atomic_load_consume(&(_sc)->lsc_activemap) 233 #define LACP_PORTMAP_NEXT(_sc) \ 234 (((LACP_PORTMAP_ACTIVE((_sc))) ^ 0x01) &0x01) 235 #define LACP_SYS_PRI(_la) ntohs((_la)->la_sid.sid_prio) 236 #define LACP_TLV_PARSE(_du, _st, _name, _tlvlist) \ 237 tlv_parse(&(_du)->_name, \ 238 sizeof(_st) - offsetof(_st, _name), \ 239 (_tlvlist)) 240 241 static void lacp_tick(void *); 242 static void lacp_tick_work(struct lagg_work *, void *); 243 static void lacp_linkstate(struct lagg_proto_softc *, struct lagg_port *); 244 static uint32_t lacp_ifmedia2lacpmedia(u_int); 245 static void lacp_port_disable(struct lacp_softc *, struct lacp_port *); 246 static void lacp_port_enable(struct lacp_softc *, struct lacp_port *); 247 static void lacp_peerinfo_actor(struct lacp_softc *, struct lacp_port *, 248 struct lacpdu_peerinfo *); 249 static void lacp_peerinfo_partner(struct lacp_port *, 250 struct lacpdu_peerinfo *); 251 static struct lagg_port * 252 lacp_select_tx_port(struct lacp_softc *, struct mbuf *, 253 struct psref *); 254 static void lacp_suppress_distributing(struct lacp_softc *); 255 static void lacp_distributing_timer(struct lacp_softc *); 256 257 static void lacp_select(struct lacp_softc *, struct lacp_port *); 258 static void lacp_unselect(struct lacp_softc *, struct lacp_port *); 259 static void lacp_selected_update(struct lacp_softc *, 260 struct lacp_aggregator *); 261 static void lacp_sm_port_init(struct lacp_softc *, 262 struct lacp_port *, struct lagg_port *); 263 static int lacp_set_mux(struct lacp_softc *, 264 struct lacp_port *, enum lacp_mux_state); 265 static void lacp_sm_mux(struct lacp_softc *, struct lacp_port *); 266 static void lacp_sm_mux_timer(struct lacp_softc *, struct lacp_port *); 267 static void lacp_sm_rx(struct lacp_softc *, struct lacp_port *, 268 struct lacpdu_peerinfo *, struct lacpdu_peerinfo *); 269 static void lacp_sm_rx_set_expired(struct lacp_port *); 270 static void lacp_sm_rx_timer(struct lacp_softc *, struct lacp_port *); 271 static void lacp_sm_rx_record_default(struct lacp_softc *, 272 struct lacp_port *); 273 274 static void lacp_sm_tx(struct lacp_softc *, struct lacp_port *); 275 static void lacp_sm_tx_work(struct lagg_work *, void *); 276 static void lacp_sm_ptx_timer(struct lacp_softc *, struct lacp_port *); 277 static void lacp_sm_ptx_schedule(struct lacp_port *); 278 static void lacp_sm_ptx_update_timeout(struct lacp_port *, uint8_t); 279 280 static void lacp_marker_work(struct lagg_work *, void *); 281 static void lacp_dump_lacpdutlv(const struct lacpdu_peerinfo *, 282 const struct lacpdu_peerinfo *, 283 const struct lacpdu_collectorinfo *); 284 static void lacp_dump_markertlv(const struct markerdu_info *, 285 const struct markerdu_info *); 286 287 typedef void (*lacp_timer_func_t)(struct lacp_softc *, struct lacp_port *); 288 static const lacp_timer_func_t lacp_timer_funcs[] = { 289 [LACP_TIMER_CURRENT_WHILE] = lacp_sm_rx_timer, 290 [LACP_TIMER_PERIODIC] = lacp_sm_ptx_timer, 291 [LACP_TIMER_WAIT_WHILE] = lacp_sm_mux_timer, 292 }; 293 typedef void (*lacp_prototimer_func_t)(struct lacp_softc *); 294 static const lacp_prototimer_func_t lacp_ptimer_funcs[] = { 295 [LACP_PTIMER_DISTRIBUTING] = lacp_distributing_timer, 296 }; 297 298 static void 299 lacp_dprintf(const struct lacp_softc *lsc, const struct lacp_port *lacpp, 300 const char *fmt, ...) 301 { 302 struct lagg_softc *sc; 303 va_list va; 304 305 if (lsc != NULL && lsc->lsc_softc != NULL) { 306 sc = lsc->lsc_softc; 307 printf("%s", sc->sc_if.if_xname); 308 } else { 309 printf("lacp"); 310 } 311 312 if (lacpp != NULL) 313 printf("(%s)", LACP_PORT_XNAME(lacpp)); 314 315 printf(": "); 316 317 va_start(va, fmt); 318 vprintf(fmt, va); 319 va_end(va); 320 } 321 322 static inline void 323 lacp_evcnt_attach(struct lacp_softc *lsc, 324 struct evcnt *ev, const char *name) 325 { 326 327 evcnt_attach_dynamic(ev, EVCNT_TYPE_MISC, NULL, 328 lsc->lsc_evgroup, name); 329 } 330 331 static inline bool 332 lacp_iscollecting(struct lacp_port *lacpp) 333 { 334 335 return atomic_load_relaxed(&lacpp->lp_collector); 336 } 337 338 static inline bool 339 lacp_isdistributing(struct lacp_port *lacpp) 340 { 341 342 return ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_DISTRIBUTING); 343 } 344 345 static inline bool 346 lacp_isactive(struct lacp_softc *lsc, struct lacp_port *lacpp) 347 { 348 349 if (lacpp->lp_selected != LACP_SELECTED) 350 return false; 351 352 if (lacpp->lp_aggregator == NULL) 353 return false; 354 355 if (lacpp->lp_aggregator != lsc->lsc_aggregator) 356 return false; 357 358 return true; 359 } 360 361 static inline void 362 lacp_mcastaddr(struct ifreq *ifr, const char *if_xname) 363 { 364 static const uint8_t addr[ETHER_ADDR_LEN] = 365 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x02 }; 366 367 memset(ifr, 0, sizeof(*ifr)); 368 369 strlcpy(ifr->ifr_name, if_xname, 370 sizeof(ifr->ifr_name)); 371 ifr->ifr_addr.sa_len = sizeof(ifr->ifr_addr); 372 ifr->ifr_addr.sa_family = AF_UNSPEC; 373 374 KASSERT(sizeof(ifr->ifr_addr) >= sizeof(addr)); 375 memcpy(&ifr->ifr_addr.sa_data, addr, sizeof(addr)); 376 } 377 378 static inline u_int 379 lacp_portmap_linkstate(struct lacp_portmap *pm) 380 { 381 382 if (pm->pm_count == 0) 383 return LINK_STATE_DOWN; 384 385 return LINK_STATE_UP; 386 } 387 388 static inline struct lacp_port * 389 lacp_port_priority_max(struct lacp_port *a, struct lacp_port *b) 390 { 391 uint16_t pri_a, pri_b; 392 393 pri_a = ntohs(a->lp_actor.lpi_portprio); 394 pri_b = ntohs(b->lp_actor.lpi_portprio); 395 396 if (pri_a < pri_b) 397 return a; 398 if (pri_b < pri_a) 399 return b; 400 401 pri_a = ntohs(a->lp_partner.lpi_portprio); 402 pri_b = ntohs(b->lp_partner.lpi_portprio); 403 404 if (pri_a < pri_b) 405 return a; 406 if (pri_b < pri_a) 407 return b; 408 409 if (a->lp_media > b->lp_media) 410 return a; 411 if (b->lp_media > a->lp_media) 412 return b; 413 414 return a; 415 } 416 417 static void 418 tlv_parse(void *vp, size_t len, struct tlv *list) 419 { 420 struct tlvhdr *th; 421 uint8_t *p; 422 size_t l, i; 423 424 th = (struct tlvhdr *)vp; 425 p = (uint8_t *)vp; 426 427 for (l = 0; l < len; l += th->tlv_length) { 428 th = (struct tlvhdr *)(p + l); 429 430 if (th->tlv_type == TLV_TYPE_TERMINATE) 431 break; 432 433 for (i = 0; list[i].tlv_t != TLV_TYPE_TERMINATE; i++) { 434 if (th->tlv_type != list[i].tlv_t) 435 continue; 436 437 if (th->tlv_length - sizeof(*th) != list[i].tlv_l) 438 break; 439 440 if (list[i].tlv_v == NULL) { 441 list[i].tlv_v = 442 (void *)((uint8_t *)th + sizeof(*th)); 443 } 444 445 break; 446 } 447 } 448 } 449 450 int 451 lacp_attach(struct lagg_softc *sc, struct lagg_proto_softc **lscp) 452 { 453 struct lacp_softc *lsc; 454 char xnamebuf[MAXCOMLEN]; 455 int error; 456 457 KASSERT(LAGG_LOCKED(sc)); 458 459 lsc = kmem_zalloc(sizeof(*lsc), KM_NOSLEEP); 460 if (lsc == NULL) 461 return ENOMEM; 462 463 mutex_init(&lsc->lsc_lock, MUTEX_DEFAULT, IPL_SOFTNET); 464 lsc->lsc_softc = sc; 465 lsc->lsc_key = htons(if_get_index(&sc->sc_if)); 466 lsc->lsc_system_prio = htons(LACP_SYSTEM_PRIO); 467 lsc->lsc_running = false; 468 lsc->lsc_max_ports = LACP_MAX_PORTS; 469 lsc->lsc_multi_linkspeed = true; 470 TAILQ_INIT(&lsc->lsc_aggregators); 471 472 lagg_work_set(&lsc->lsc_work_tick, lacp_tick_work, lsc); 473 snprintf(xnamebuf, sizeof(xnamebuf), "%s.lacp", 474 sc->sc_if.if_xname); 475 lsc->lsc_workq = lagg_workq_create(xnamebuf, 476 PRI_SOFTNET, IPL_SOFTNET, WQ_MPSAFE); 477 if (lsc->lsc_workq == NULL) { 478 lagg_log(sc, LOG_ERR, "workqueue create failed\n"); 479 error = ENOMEM; 480 goto destroy_lock; 481 } 482 483 lsc->lsc_psz = pserialize_create(); 484 485 callout_init(&lsc->lsc_tick, CALLOUT_MPSAFE); 486 callout_setfunc(&lsc->lsc_tick, lacp_tick, lsc); 487 488 snprintf(lsc->lsc_evgroup, sizeof(lsc->lsc_evgroup), 489 "%s-lacp", sc->sc_if.if_xname); 490 lacp_evcnt_attach(lsc, &lsc->lsc_mgethdr_failed, "MGETHDR failed"); 491 lacp_evcnt_attach(lsc, &lsc->lsc_mpullup_failed, "m_pullup failed"); 492 lacp_evcnt_attach(lsc, &lsc->lsc_badlacpdu, "Bad LACPDU recieved"); 493 lacp_evcnt_attach(lsc, &lsc->lsc_badmarkerdu, "Bad MarkerDU recieved"); 494 495 if_link_state_change(&sc->sc_if, LINK_STATE_DOWN); 496 497 *lscp = (struct lagg_proto_softc *)lsc; 498 return 0; 499 500 destroy_lock: 501 mutex_destroy(&lsc->lsc_lock); 502 503 return error; 504 } 505 506 void 507 lacp_detach(struct lagg_proto_softc *xlsc) 508 { 509 struct lacp_softc *lsc = (struct lacp_softc *)xlsc; 510 struct lagg_softc *sc __diagused = lsc->lsc_softc; 511 512 KASSERT(LAGG_LOCKED(lsc->lsc_softc)); 513 KASSERT(TAILQ_EMPTY(&lsc->lsc_aggregators)); 514 KASSERT(SIMPLEQ_EMPTY(&sc->sc_ports)); 515 516 lacp_down(xlsc); 517 518 evcnt_detach(&lsc->lsc_mgethdr_failed); 519 evcnt_detach(&lsc->lsc_mpullup_failed); 520 evcnt_detach(&lsc->lsc_badlacpdu); 521 evcnt_detach(&lsc->lsc_badmarkerdu); 522 lagg_workq_destroy(lsc->lsc_workq); 523 pserialize_destroy(lsc->lsc_psz); 524 mutex_destroy(&lsc->lsc_lock); 525 kmem_free(lsc, sizeof(*lsc)); 526 } 527 528 int 529 lacp_up(struct lagg_proto_softc *xlsc) 530 { 531 struct lagg_softc *sc; 532 struct lagg_port *lp; 533 struct lacp_softc *lsc; 534 535 lsc = (struct lacp_softc *)xlsc; 536 sc = lsc->lsc_softc; 537 538 KASSERT(LAGG_LOCKED(sc)); 539 540 LACP_LOCK(lsc); 541 if (memcmp(lsc->lsc_system_mac, LAGG_CLLADDR(sc), 542 sizeof(lsc->lsc_system_mac)) != 0) { 543 memcpy(lsc->lsc_system_mac, LAGG_CLLADDR(sc), 544 sizeof(lsc->lsc_system_mac)); 545 } 546 lsc->lsc_running = true; 547 callout_schedule(&lsc->lsc_tick, hz); 548 LACP_UNLOCK(lsc); 549 550 LAGG_PORTS_FOREACH(sc, lp) { 551 lacp_linkstate(xlsc, lp); 552 } 553 554 LACP_DPRINTF((lsc, NULL, "lacp start\n")); 555 556 return 0; 557 } 558 559 static void 560 lacp_down_locked(struct lacp_softc *lsc) 561 { 562 struct lagg_softc *sc; 563 struct lagg_port *lp; 564 565 sc = lsc->lsc_softc; 566 567 KASSERT(LAGG_LOCKED(sc)); 568 KASSERT(LACP_LOCKED(lsc)); 569 570 lsc->lsc_running = false; 571 callout_halt(&lsc->lsc_tick, &lsc->lsc_lock); 572 573 LAGG_PORTS_FOREACH(sc, lp) { 574 lacp_port_disable(lsc, lp->lp_proto_ctx); 575 } 576 577 memset(lsc->lsc_system_mac, 0, 578 sizeof(lsc->lsc_system_mac)); 579 580 LACP_DPRINTF((lsc, NULL, "lacp stopped\n")); 581 } 582 583 void 584 lacp_down(struct lagg_proto_softc *xlsc) 585 { 586 struct lacp_softc *lsc; 587 588 lsc = (struct lacp_softc *)xlsc; 589 590 KASSERT(LAGG_LOCKED(lsc->lsc_softc)); 591 592 LACP_LOCK(lsc); 593 lacp_down_locked(lsc); 594 LACP_UNLOCK(lsc); 595 } 596 597 int 598 lacp_transmit(struct lagg_proto_softc *xlsc, struct mbuf *m) 599 { 600 struct lacp_softc *lsc; 601 struct lagg_port *lp; 602 struct ifnet *ifp; 603 struct psref psref; 604 605 lsc = (struct lacp_softc *)xlsc; 606 607 if (__predict_false(lsc->lsc_suppress_distributing)) { 608 LACP_DPRINTF((lsc, NULL, "waiting transit\n")); 609 m_freem(m); 610 return ENOBUFS; 611 } 612 613 lp = lacp_select_tx_port(lsc, m, &psref); 614 if (__predict_false(lp == NULL)) { 615 LACP_DPRINTF((lsc, NULL, "no distributing port\n")); 616 ifp = &lsc->lsc_softc->sc_if; 617 if_statinc(ifp, if_oerrors); 618 m_freem(m); 619 return ENOENT; 620 } 621 622 lagg_enqueue(lsc->lsc_softc, lp, m); 623 lagg_port_putref(lp, &psref); 624 625 return 0; 626 } 627 628 int 629 lacp_allocport(struct lagg_proto_softc *xlsc, struct lagg_port *lp) 630 { 631 struct lagg_softc *sc; 632 struct lacp_softc *lsc; 633 struct lacp_port *lacpp; 634 struct ifreq ifr; 635 bool added_multi; 636 int error; 637 638 lsc = (struct lacp_softc *)xlsc; 639 sc = lsc->lsc_softc; 640 641 KASSERT(LAGG_LOCKED(sc)); 642 643 IFNET_LOCK(lp->lp_ifp); 644 lacp_mcastaddr(&ifr, lp->lp_ifp->if_xname); 645 error = lp->lp_ioctl(lp->lp_ifp, SIOCADDMULTI, (void *)&ifr); 646 IFNET_UNLOCK(lp->lp_ifp); 647 648 switch (error) { 649 case 0: 650 added_multi = true; 651 break; 652 case EAFNOSUPPORT: 653 added_multi = false; 654 break; 655 default: 656 lagg_log(sc, LOG_ERR, "SIOCADDMULTI failed on %s\n", 657 lp->lp_ifp->if_xname); 658 return error; 659 } 660 661 lacpp = kmem_zalloc(sizeof(*lacpp), KM_NOSLEEP); 662 if (lacpp == NULL) 663 return ENOMEM; 664 665 lacpp->lp_added_multi = added_multi; 666 lagg_work_set(&lacpp->lp_work_smtx, lacp_sm_tx_work, lsc); 667 lagg_work_set(&lacpp->lp_work_marker, lacp_marker_work, lsc); 668 669 LACP_LOCK(lsc); 670 lacp_sm_port_init(lsc, lacpp, lp); 671 LACP_UNLOCK(lsc); 672 673 lp->lp_proto_ctx = (void *)lacpp; 674 lp->lp_prio = ntohs(lacpp->lp_actor.lpi_portprio); 675 lacp_linkstate(xlsc, lp); 676 677 return 0; 678 } 679 680 void 681 lacp_startport(struct lagg_proto_softc *xlsc, struct lagg_port *lp) 682 { 683 struct lacp_port *lacpp; 684 uint16_t prio; 685 686 lacpp = lp->lp_proto_ctx; 687 688 prio = (uint16_t)MIN(lp->lp_prio, UINT16_MAX); 689 lacpp->lp_actor.lpi_portprio = htons(prio); 690 691 lacp_linkstate(xlsc, lp); 692 } 693 694 void 695 lacp_stopport(struct lagg_proto_softc *xlsc, struct lagg_port *lp) 696 { 697 struct lacp_softc *lsc; 698 struct lacp_port *lacpp; 699 int i; 700 701 lsc = (struct lacp_softc *)xlsc; 702 lacpp = lp->lp_proto_ctx; 703 704 KASSERT(LAGG_LOCKED(lsc->lsc_softc)); 705 706 LACP_LOCK(lsc); 707 for (i = 0; i < LACP_NTIMER; i++) { 708 LACP_TIMER_DISARM(lacpp, i); 709 } 710 711 lacp_port_disable(lsc, lacpp); 712 LACP_UNLOCK(lsc); 713 } 714 715 void 716 lacp_freeport(struct lagg_proto_softc *xlsc, struct lagg_port *lp) 717 { 718 struct lacp_softc *lsc; 719 struct lacp_port *lacpp; 720 struct ifreq ifr; 721 722 lsc = (struct lacp_softc *)xlsc; 723 lacpp = lp->lp_proto_ctx; 724 725 KASSERT(LAGG_LOCKED(lsc->lsc_softc)); 726 727 lagg_workq_wait(lsc->lsc_workq, &lacpp->lp_work_smtx); 728 lagg_workq_wait(lsc->lsc_workq, &lacpp->lp_work_marker); 729 730 if (lacpp->lp_added_multi) { 731 lacp_mcastaddr(&ifr, LACP_PORT_XNAME(lacpp)); 732 733 IFNET_LOCK(lp->lp_ifp); 734 (void)lp->lp_ioctl(lp->lp_ifp, SIOCDELMULTI, (void *)&ifr); 735 IFNET_UNLOCK(lp->lp_ifp); 736 } 737 738 lp->lp_proto_ctx = NULL; 739 kmem_free(lacpp, sizeof(*lacpp)); 740 } 741 742 void 743 lacp_protostat(struct lagg_proto_softc *xlsc, struct laggreqproto *resp) 744 { 745 struct laggreq_lacp *rplacp; 746 struct lacp_softc *lsc; 747 struct lacp_aggregator *la; 748 struct lacp_aggregator_systemid *sid; 749 750 lsc = (struct lacp_softc *)xlsc; 751 752 LACP_LOCK(lsc); 753 la = lsc->lsc_aggregator; 754 rplacp = &resp->rp_lacp; 755 756 if (lsc->lsc_optimistic) 757 SET(rplacp->flags, LAGGREQLACP_OPTIMISTIC); 758 if (lsc->lsc_dump_du) 759 SET(rplacp->flags, LAGGREQLACP_DUMPDU); 760 if (lsc->lsc_stop_lacpdu) 761 SET(rplacp->flags, LAGGREQLACP_STOPDU); 762 if (lsc->lsc_multi_linkspeed) 763 SET(rplacp->flags, LAGGREQLACP_MULTILS); 764 765 rplacp->maxports = lsc->lsc_max_ports; 766 rplacp->actor_prio = ntohs(lsc->lsc_system_prio); 767 memcpy(rplacp->actor_mac, lsc->lsc_system_mac, 768 sizeof(rplacp->actor_mac)); 769 rplacp->actor_key = ntohs(lsc->lsc_key); 770 771 if (la != NULL) { 772 sid = &la->la_sid; 773 rplacp->partner_prio = ntohs(sid->sid_prio); 774 memcpy(rplacp->partner_mac, sid->sid_mac, 775 sizeof(rplacp->partner_mac)); 776 rplacp->partner_key = ntohs(sid->sid_key); 777 } 778 LACP_UNLOCK(lsc); 779 } 780 781 void 782 lacp_portstat(struct lagg_proto_softc *xlsc, struct lagg_port *lp, 783 struct laggreqport *resp) 784 { 785 struct laggreq_lacpport *llp; 786 struct lacp_softc *lsc; 787 struct lacp_port *lacpp; 788 struct lacp_aggregator *la; 789 struct lacp_aggregator_systemid *sid; 790 791 lsc = (struct lacp_softc *)xlsc; 792 lacpp = lp->lp_proto_ctx; 793 la = lacpp->lp_aggregator; 794 llp = &resp->rp_lacpport; 795 796 if (lacp_isactive(lsc, lacpp)) 797 SET(resp->rp_flags, LAGG_PORT_ACTIVE); 798 if (lacp_iscollecting(lacpp)) 799 SET(resp->rp_flags, LAGG_PORT_COLLECTING); 800 if (lacp_isdistributing(lacpp)) 801 SET(resp->rp_flags, LAGG_PORT_DISTRIBUTING); 802 if (lacpp->lp_selected == LACP_STANDBY) 803 SET(resp->rp_flags, LAGG_PORT_STANDBY); 804 805 if (la != NULL) { 806 sid = &la->la_sid; 807 llp->partner_prio = ntohs(sid->sid_prio); 808 memcpy(llp->partner_mac, sid->sid_mac, 809 sizeof(llp->partner_mac)); 810 llp->partner_key = ntohs(sid->sid_key); 811 } 812 813 llp->actor_portprio = ntohs(lacpp->lp_actor.lpi_portprio); 814 llp->actor_portno = ntohs(lacpp->lp_actor.lpi_portno); 815 llp->actor_state = lacpp->lp_actor.lpi_state; 816 817 llp->partner_portprio = ntohs(lacpp->lp_partner.lpi_portprio); 818 llp->partner_portno = ntohs(lacpp->lp_partner.lpi_portno); 819 llp->partner_state = lacpp->lp_partner.lpi_state; 820 } 821 822 void 823 lacp_linkstate_ifnet_locked(struct lagg_proto_softc *xlsc, struct lagg_port *lp) 824 { 825 struct lacp_softc *lsc; 826 struct lacp_port *lacpp; 827 struct ifmediareq ifmr; 828 struct ifnet *ifp_port; 829 uint8_t old_state; 830 uint32_t media, old_media; 831 int error; 832 833 KASSERT(IFNET_LOCKED(lp->lp_ifp)); 834 835 lsc = (struct lacp_softc *)xlsc; 836 837 ifp_port = lp->lp_ifp; 838 lacpp = lp->lp_proto_ctx; 839 media = LACP_MEDIA_DEFAULT; 840 841 memset(&ifmr, 0, sizeof(ifmr)); 842 ifmr.ifm_count = 0; 843 error = if_ioctl(ifp_port, SIOCGIFMEDIA, (void *)&ifmr); 844 if (error == 0) { 845 media = lacp_ifmedia2lacpmedia(ifmr.ifm_active); 846 } else if (error != ENOTTY){ 847 LACP_DPRINTF((lsc, lacpp, 848 "SIOCGIFMEDIA failed (%d)\n", error)); 849 return; 850 } 851 852 LACP_LOCK(lsc); 853 if (lsc->lsc_running) { 854 old_media = lacpp->lp_media; 855 old_state = lacpp->lp_actor.lpi_state; 856 857 if (lacpp->lp_media != media) { 858 LACP_DPRINTF((lsc, lacpp, 859 "media changed 0x%"PRIx32"->0x%"PRIx32", " 860 "ether = %d, fdx = %d, link = %d, running = %d\n", 861 lacpp->lp_media, media, 862 ISSET(media, LACP_MEDIA_ETHER) != 0, 863 ISSET(media, LACP_MEDIA_FDX) != 0, 864 ifp_port->if_link_state != LINK_STATE_DOWN, 865 ISSET(ifp_port->if_flags, IFF_RUNNING) != 0)); 866 lacpp->lp_media = media; 867 } 868 869 if (ISSET(media, LACP_MEDIA_ETHER) && 870 ISSET(media, LACP_MEDIA_FDX) && 871 ifp_port->if_link_state != LINK_STATE_DOWN && 872 ISSET(ifp_port->if_flags, IFF_RUNNING)) { 873 lacp_port_enable(lsc, lacpp); 874 } else { 875 lacp_port_disable(lsc, lacpp); 876 } 877 878 if (old_state != lacpp->lp_actor.lpi_state || 879 old_media != media) { 880 LACP_DPRINTF((lsc, lacpp, 881 "state changed to UNSELECTED\n")); 882 lacpp->lp_selected = LACP_UNSELECTED; 883 } 884 } else { 885 LACP_DPRINTF((lsc, lacpp, 886 "LACP is inactive, skip linkstate\n")); 887 } 888 889 LACP_UNLOCK(lsc); 890 } 891 892 int 893 lacp_ioctl(struct lagg_proto_softc *xlsc, struct laggreqproto *lreq) 894 { 895 struct lacp_softc *lsc; 896 struct laggreq_lacp *rplacp; 897 struct lacp_aggregator *la; 898 int error; 899 size_t maxports; 900 bool set; 901 902 lsc = (struct lacp_softc *)xlsc; 903 rplacp = &lreq->rp_lacp; 904 error = 0; 905 906 switch (rplacp->command) { 907 case LAGGIOC_LACPSETFLAGS: 908 case LAGGIOC_LACPCLRFLAGS: 909 set = (rplacp->command == LAGGIOC_LACPSETFLAGS) ? 910 true : false; 911 912 LACP_LOCK(lsc); 913 914 if (ISSET(rplacp->flags, LAGGREQLACP_OPTIMISTIC)) 915 lsc->lsc_optimistic = set; 916 if (ISSET(rplacp->flags, LAGGREQLACP_DUMPDU)) 917 lsc->lsc_dump_du = set; 918 if (ISSET(rplacp->flags, LAGGREQLACP_STOPDU)) 919 lsc->lsc_stop_lacpdu = set; 920 if (ISSET(rplacp->flags, LAGGREQLACP_MULTILS)) 921 lsc->lsc_multi_linkspeed = set; 922 923 LACP_UNLOCK(lsc); 924 break; 925 case LAGGIOC_LACPSETMAXPORTS: 926 case LAGGIOC_LACPCLRMAXPORTS: 927 maxports = (rplacp->command == LAGGIOC_LACPSETMAXPORTS) ? 928 rplacp->maxports : LACP_MAX_PORTS; 929 if (0 == maxports || LACP_MAX_PORTS < maxports) { 930 error = ERANGE; 931 break; 932 } 933 934 LACP_LOCK(lsc); 935 if (lsc->lsc_max_ports != maxports) { 936 lsc->lsc_max_ports = maxports; 937 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 938 lacp_selected_update(lsc, la); 939 } 940 } 941 LACP_UNLOCK(lsc); 942 break; 943 default: 944 error = ENOTTY; 945 } 946 947 return error; 948 } 949 950 static int 951 lacp_pdu_input(struct lacp_softc *lsc, struct lacp_port *lacpp, struct mbuf *m) 952 { 953 enum { 954 LACP_TLV_ACTOR = 0, 955 LACP_TLV_PARTNER, 956 LACP_TLV_COLLECTOR, 957 LACP_TLV_TERM, 958 LACP_TLV_NUM 959 }; 960 961 struct lacpdu *du; 962 struct lacpdu_peerinfo *pi_actor, *pi_partner; 963 struct lacpdu_collectorinfo *lci; 964 struct tlv tlvlist_lacp[LACP_TLV_NUM] = { 965 [LACP_TLV_ACTOR] = { 966 .tlv_t = LACP_TYPE_ACTORINFO, 967 .tlv_l = sizeof(*pi_actor)}, 968 [LACP_TLV_PARTNER] = { 969 .tlv_t = LACP_TYPE_PARTNERINFO, 970 .tlv_l = sizeof(*pi_partner)}, 971 [LACP_TLV_COLLECTOR] = { 972 .tlv_t = LACP_TYPE_COLLECTORINFO, 973 .tlv_l = sizeof(*lci)}, 974 [LACP_TLV_TERM] = { 975 .tlv_t = TLV_TYPE_TERMINATE, 976 .tlv_l = 0}, 977 }; 978 979 if (m->m_pkthdr.len != sizeof(*du)) 980 goto bad; 981 982 if ((m->m_flags & M_MCAST) == 0) 983 goto bad; 984 985 if (m->m_len < (int)sizeof(*du)) { 986 m = m_pullup(m, sizeof(*du)); 987 if (m == NULL) { 988 lsc->lsc_mpullup_failed.ev_count++; 989 return ENOMEM; 990 } 991 } 992 993 du = mtod(m, struct lacpdu *); 994 995 if (memcmp(&du->ldu_eh.ether_dhost, 996 ethermulticastaddr_slowprotocols, ETHER_ADDR_LEN) != 0) 997 goto bad; 998 999 LACP_TLV_PARSE(du, struct lacpdu, ldu_tlv_actor, 1000 tlvlist_lacp); 1001 1002 pi_actor = tlvlist_lacp[LACP_TLV_ACTOR].tlv_v; 1003 pi_partner = tlvlist_lacp[LACP_TLV_PARTNER].tlv_v; 1004 lci = tlvlist_lacp[LACP_TLV_COLLECTOR].tlv_v; 1005 1006 if (pi_actor == NULL || pi_partner == NULL) 1007 goto bad; 1008 1009 if (LACP_ISDUMPING(lsc)) { 1010 lacp_dprintf(lsc, lacpp, "lacpdu received\n"); 1011 lacp_dump_lacpdutlv(pi_actor, pi_partner, lci); 1012 } 1013 1014 LACP_LOCK(lsc); 1015 lacp_sm_rx(lsc, lacpp, pi_partner, pi_actor); 1016 LACP_UNLOCK(lsc); 1017 1018 m_freem(m); 1019 return 0; 1020 bad: 1021 lsc->lsc_badlacpdu.ev_count++; 1022 m_freem(m); 1023 return EINVAL; 1024 } 1025 1026 static int 1027 marker_cmp(struct markerdu_info *mi, 1028 struct lacp_softc *lsc, struct lacp_port *lacpp) 1029 { 1030 1031 KASSERT(LACP_LOCKED(lsc)); 1032 1033 if (mi->mi_rq_port != lacpp->lp_actor.lpi_portno) 1034 return -1; 1035 1036 if (ntohl(mi->mi_rq_xid) != lacpp->lp_marker_xid) 1037 return -1; 1038 1039 return memcmp(mi->mi_rq_system, lsc->lsc_system_mac, 1040 LACP_MAC_LEN); 1041 } 1042 1043 static void 1044 lacp_marker_reply(struct lacp_softc *lsc, struct lacp_port *lacpp, 1045 struct mbuf *m_info) 1046 { 1047 struct lagg_port *lp; 1048 struct markerdu *mdu; 1049 struct ifnet *ifp_port; 1050 struct psref psref; 1051 1052 LACP_LOCK(lsc); 1053 lp = lacpp->lp_laggport; 1054 lagg_port_getref(lp, &psref); 1055 LACP_UNLOCK(lsc); 1056 1057 ifp_port = lp->lp_ifp; 1058 mdu = mtod(m_info, struct markerdu *); 1059 1060 mdu->mdu_tlv_info.tlv_type = MARKER_TYPE_RESPONSE; 1061 /* ether_dhost is already equals to multicast address */ 1062 memcpy(mdu->mdu_eh.ether_shost, 1063 CLLADDR(ifp_port->if_sadl), ETHER_ADDR_LEN); 1064 1065 if (LACP_ISDUMPING(lsc)) { 1066 lacp_dprintf(lsc, lacpp, "markerdu reply\n"); 1067 lacp_dump_markertlv(NULL, &mdu->mdu_info); 1068 } 1069 1070 lagg_port_xmit(lp, m_info); 1071 lagg_port_putref(lp, &psref); 1072 } 1073 1074 static int 1075 lacp_marker_recv_response(struct lacp_softc *lsc, struct lacp_port *lacpp, 1076 struct markerdu_info *mi_res) 1077 { 1078 struct lagg_softc *sc; 1079 struct lagg_port *lp0; 1080 struct lacp_port *lacpp0; 1081 bool pending; 1082 1083 sc = lsc->lsc_softc; 1084 1085 LACP_LOCK(lsc); 1086 if (marker_cmp(mi_res, lsc, lacpp) != 0) { 1087 LACP_UNLOCK(lsc); 1088 return -1; 1089 } 1090 CLR(lacpp->lp_flags, LACP_PORT_MARK); 1091 LACP_UNLOCK(lsc); 1092 1093 LAGG_LOCK(sc); 1094 LACP_LOCK(lsc); 1095 1096 if (lsc->lsc_suppress_distributing) { 1097 pending = false; 1098 LAGG_PORTS_FOREACH(sc, lp0) { 1099 lacpp0 = lp0->lp_proto_ctx; 1100 if (ISSET(lacpp0->lp_flags, LACP_PORT_MARK)) { 1101 pending = true; 1102 break; 1103 } 1104 } 1105 1106 if (!pending) { 1107 LACP_DPRINTF((lsc, NULL, "queue flush complete\n")); 1108 LACP_PTIMER_DISARM(lsc, LACP_PTIMER_DISTRIBUTING); 1109 lsc->lsc_suppress_distributing = false; 1110 } 1111 } 1112 1113 LACP_UNLOCK(lsc); 1114 LAGG_UNLOCK(sc); 1115 1116 return 0; 1117 } 1118 1119 static int 1120 lacp_marker_input(struct lacp_softc *lsc, struct lacp_port *lacpp, 1121 struct mbuf *m) 1122 { 1123 enum { 1124 MARKER_TLV_INFO = 0, 1125 MARKER_TLV_RESPONSE, 1126 MARKER_TLV_TERM, 1127 MARKER_TLV_NUM 1128 }; 1129 1130 struct markerdu *mdu; 1131 struct markerdu_info *mi_info, *mi_res; 1132 int error; 1133 struct tlv tlvlist_marker[MARKER_TLV_NUM] = { 1134 [MARKER_TLV_INFO] = { 1135 .tlv_t = MARKER_TYPE_INFO, 1136 .tlv_l = sizeof(*mi_info)}, 1137 [MARKER_TLV_RESPONSE] = { 1138 .tlv_t = MARKER_TYPE_RESPONSE, 1139 .tlv_l = sizeof(*mi_res)}, 1140 [MARKER_TLV_TERM] = { 1141 .tlv_t = TLV_TYPE_TERMINATE, 1142 .tlv_l = 0}, 1143 }; 1144 1145 if (m->m_pkthdr.len != sizeof(*mdu)) 1146 goto bad; 1147 1148 if ((m->m_flags & M_MCAST) == 0) 1149 goto bad; 1150 1151 if (m->m_len < (int)sizeof(*mdu)) { 1152 m = m_pullup(m, sizeof(*mdu)); 1153 if (m == NULL) { 1154 lsc->lsc_mpullup_failed.ev_count++; 1155 return ENOMEM; 1156 } 1157 } 1158 1159 mdu = mtod(m, struct markerdu *); 1160 1161 if (memcmp(mdu->mdu_eh.ether_dhost, 1162 ethermulticastaddr_slowprotocols, ETHER_ADDR_LEN) != 0) 1163 goto bad; 1164 1165 LACP_TLV_PARSE(mdu, struct markerdu, mdu_tlv_info, 1166 tlvlist_marker); 1167 1168 mi_info = tlvlist_marker[MARKER_TLV_INFO].tlv_v; 1169 mi_res = tlvlist_marker[MARKER_TLV_RESPONSE].tlv_v; 1170 1171 if (LACP_ISDUMPING(lsc)) { 1172 lacp_dprintf(lsc, lacpp, "markerdu received\n"); 1173 lacp_dump_markertlv(mi_info, mi_res); 1174 } 1175 1176 if (mi_info != NULL && mi_res == NULL) { 1177 lacp_marker_reply(lsc, lacpp, m); 1178 } else if (mi_info == NULL && mi_res != NULL) { 1179 error = lacp_marker_recv_response(lsc, lacpp, 1180 mi_res); 1181 if (error != 0) { 1182 goto bad; 1183 } else { 1184 m_freem(m); 1185 } 1186 } else { 1187 goto bad; 1188 } 1189 1190 return 0; 1191 bad: 1192 lsc->lsc_badmarkerdu.ev_count++; 1193 m_freem(m); 1194 return EINVAL; 1195 } 1196 1197 struct mbuf * 1198 lacp_input(struct lagg_proto_softc *xlsc, struct lagg_port *lp, struct mbuf *m) 1199 { 1200 struct ifnet *ifp; 1201 struct lacp_softc *lsc; 1202 struct lacp_port *lacpp; 1203 struct ether_header *eh; 1204 uint8_t subtype; 1205 1206 eh = mtod(m, struct ether_header *); 1207 lsc = (struct lacp_softc *)xlsc; 1208 ifp = &lsc->lsc_softc->sc_if; 1209 lacpp = lp->lp_proto_ctx; 1210 1211 if (!vlan_has_tag(m) && 1212 eh->ether_type == htons(ETHERTYPE_SLOWPROTOCOLS)) { 1213 if (m->m_pkthdr.len < (int)(sizeof(*eh) + sizeof(subtype))) { 1214 m_freem(m); 1215 return NULL; 1216 } 1217 1218 m_copydata(m, sizeof(struct ether_header), 1219 sizeof(subtype), &subtype); 1220 switch (subtype) { 1221 case SLOWPROTOCOLS_SUBTYPE_LACP: 1222 (void)lacp_pdu_input(lsc, lacpp, m); 1223 return NULL; 1224 case SLOWPROTOCOLS_SUBTYPE_MARKER: 1225 (void)lacp_marker_input(lsc, lacpp, m); 1226 return NULL; 1227 } 1228 } 1229 1230 if (!lacp_iscollecting(lacpp) || !lacp_isactive(lsc, lacpp)) { 1231 if_statinc(ifp, if_ierrors); 1232 m_freem(m); 1233 return NULL; 1234 } 1235 1236 return m; 1237 } 1238 1239 static bool 1240 lacp_port_need_to_tell(struct lacp_port *lacpp) 1241 { 1242 1243 if (!ISSET(lacpp->lp_actor.lpi_state, 1244 LACP_STATE_AGGREGATION)) { 1245 return false; 1246 } 1247 1248 if (!ISSET(lacpp->lp_actor.lpi_state, 1249 LACP_STATE_ACTIVITY) 1250 && !ISSET(lacpp->lp_partner.lpi_state, 1251 LACP_STATE_ACTIVITY)) { 1252 return false; 1253 } 1254 1255 if (!ISSET(lacpp->lp_flags, LACP_PORT_NTT)) 1256 return false; 1257 1258 if (ppsratecheck(&lacpp->lp_last_lacpdu, &lacpp->lp_lacpdu_sent, 1259 (3 / LACP_FAST_PERIODIC_TIME)) == 0) 1260 return false; 1261 1262 return true; 1263 } 1264 1265 static void 1266 lacp_sm_assert_ntt(struct lacp_port *lacpp) 1267 { 1268 1269 SET(lacpp->lp_flags, LACP_PORT_NTT); 1270 } 1271 1272 static void 1273 lacp_sm_negate_ntt(struct lacp_port *lacpp) 1274 { 1275 1276 CLR(lacpp->lp_flags, LACP_PORT_NTT); 1277 } 1278 1279 static struct mbuf * 1280 lacp_lacpdu_mbuf(struct lacp_softc *lsc, struct lacp_port *lacpp) 1281 { 1282 struct ifnet *ifp_port; 1283 struct mbuf *m; 1284 struct lacpdu *du; 1285 1286 KASSERT(LACP_LOCKED(lsc)); 1287 1288 ifp_port = lacpp->lp_laggport->lp_ifp; 1289 1290 MGETHDR(m, M_DONTWAIT, MT_DATA); 1291 if (m == NULL) { 1292 lsc->lsc_mgethdr_failed.ev_count++; 1293 return NULL; 1294 } 1295 1296 m->m_pkthdr.len = m->m_len = sizeof(*du); 1297 1298 du = mtod(m, struct lacpdu *); 1299 memset(du, 0, sizeof(*du)); 1300 1301 m->m_flags |= M_MCAST; 1302 memcpy(du->ldu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 1303 ETHER_ADDR_LEN); 1304 memcpy(du->ldu_eh.ether_shost, CLLADDR(ifp_port->if_sadl), 1305 ETHER_ADDR_LEN); 1306 du->ldu_eh.ether_type = htons(ETHERTYPE_SLOWPROTOCOLS); 1307 du->ldu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_LACP; 1308 du->ldu_sph.sph_version = 1; 1309 1310 tlv_set(&du->ldu_tlv_actor, LACP_TYPE_ACTORINFO, 1311 sizeof(du->ldu_actor)); 1312 lacp_peerinfo_actor(lsc, lacpp, &du->ldu_actor); 1313 1314 tlv_set(&du->ldu_tlv_partner, LACP_TYPE_PARTNERINFO, 1315 sizeof(du->ldu_partner)); 1316 lacp_peerinfo_partner(lacpp, &du->ldu_partner); 1317 1318 tlv_set(&du->ldu_tlv_collector, LACP_TYPE_COLLECTORINFO, 1319 sizeof(du->ldu_collector)); 1320 du->ldu_collector.lci_maxdelay = 0; 1321 1322 du->ldu_tlv_term.tlv_type = LACP_TYPE_TERMINATE; 1323 du->ldu_tlv_term.tlv_length = 0; 1324 1325 return m; 1326 } 1327 1328 static void 1329 lacp_sm_tx_work(struct lagg_work *lw, void *xlsc) 1330 { 1331 struct lacp_softc *lsc; 1332 struct lacp_port *lacpp; 1333 struct lagg_port *lp; 1334 struct lacpdu *du; 1335 struct mbuf *m; 1336 struct psref psref; 1337 int bound; 1338 1339 lsc = xlsc; 1340 lacpp = container_of(lw, struct lacp_port, lp_work_smtx); 1341 1342 if (lsc->lsc_stop_lacpdu) 1343 return; 1344 1345 LACP_LOCK(lsc); 1346 m = lacp_lacpdu_mbuf(lsc, lacpp); 1347 if (m == NULL) { 1348 LACP_UNLOCK(lsc); 1349 return; 1350 } 1351 lacp_sm_negate_ntt(lacpp); 1352 lp = lacpp->lp_laggport; 1353 bound = curlwp_bind(); 1354 lagg_port_getref(lp, &psref); 1355 LACP_UNLOCK(lsc); 1356 1357 if (LACP_ISDUMPING(lsc)) { 1358 lacp_dprintf(lsc, lacpp, "lacpdu transmit\n"); 1359 du = mtod(m, struct lacpdu *); 1360 lacp_dump_lacpdutlv(&du->ldu_actor, 1361 &du->ldu_partner, &du->ldu_collector); 1362 } 1363 1364 lagg_port_xmit(lp, m); 1365 lagg_port_putref(lp, &psref); 1366 curlwp_bindx(bound); 1367 } 1368 1369 static void 1370 lacp_sm_tx(struct lacp_softc *lsc, struct lacp_port *lacpp) 1371 { 1372 1373 if (!lacp_port_need_to_tell(lacpp)) 1374 return; 1375 1376 lagg_workq_add(lsc->lsc_workq, &lacpp->lp_work_smtx); 1377 } 1378 1379 static void 1380 lacp_tick(void *xlsc) 1381 { 1382 struct lacp_softc *lsc; 1383 1384 lsc = xlsc; 1385 1386 lagg_workq_add(lsc->lsc_workq, &lsc->lsc_work_tick); 1387 1388 LACP_LOCK(lsc); 1389 callout_schedule(&lsc->lsc_tick, hz); 1390 LACP_UNLOCK(lsc); 1391 } 1392 1393 static void 1394 lacp_run_timers(struct lacp_softc *lsc, struct lacp_port *lacpp) 1395 { 1396 size_t i; 1397 1398 for (i = 0; i < LACP_NTIMER; i++) { 1399 KASSERT(lacpp->lp_timer[i] >= 0); 1400 1401 if (lacpp->lp_timer[i] == 0) 1402 continue; 1403 if (--lacpp->lp_timer[i] > 0) 1404 continue; 1405 1406 KASSERT(lacp_timer_funcs[i] != NULL); 1407 lacp_timer_funcs[i](lsc, lacpp); 1408 } 1409 } 1410 1411 static void 1412 lacp_run_prototimers(struct lacp_softc *lsc) 1413 { 1414 size_t i; 1415 1416 for (i = 0; i < LACP_NPTIMER; i++) { 1417 KASSERT(lsc->lsc_timer[i] >= 0); 1418 1419 if (lsc->lsc_timer[i] == 0) 1420 continue; 1421 if (--lsc->lsc_timer[i] > 0) 1422 continue; 1423 1424 KASSERT(lacp_ptimer_funcs[i] != NULL); 1425 lacp_ptimer_funcs[i](lsc); 1426 } 1427 } 1428 1429 static void 1430 lacp_tick_work(struct lagg_work *lw __unused, void *xlsc) 1431 { 1432 struct lacp_softc *lsc; 1433 struct lacp_port *lacpp; 1434 struct lagg_softc *sc; 1435 struct lagg_port *lp; 1436 1437 lsc = xlsc; 1438 sc = lsc->lsc_softc; 1439 1440 LACP_LOCK(lsc); 1441 lacp_run_prototimers(lsc); 1442 LACP_UNLOCK(lsc); 1443 1444 LAGG_LOCK(sc); 1445 LACP_LOCK(lsc); 1446 LAGG_PORTS_FOREACH(sc, lp) { 1447 lacpp = lp->lp_proto_ctx; 1448 if (!ISSET(lacpp->lp_actor.lpi_state, 1449 LACP_STATE_AGGREGATION)) { 1450 continue; 1451 } 1452 1453 lacp_run_timers(lsc, lacpp); 1454 lacp_select(lsc, lacpp); 1455 lacp_sm_mux(lsc, lacpp); 1456 lacp_sm_tx(lsc, lacpp); 1457 lacp_sm_ptx_schedule(lacpp); 1458 } 1459 1460 LACP_UNLOCK(lsc); 1461 LAGG_UNLOCK(sc); 1462 } 1463 1464 static void 1465 lacp_systemid_str(char *buf, size_t buflen, 1466 uint16_t prio, const uint8_t *mac, uint16_t key) 1467 { 1468 1469 snprintf(buf, buflen, 1470 "%04X," 1471 "%02X-%02X-%02X-%02X-%02X-%02X," 1472 "%04X", 1473 (unsigned int)ntohs(prio), 1474 (int)mac[0], (int)mac[1], (int)mac[2], 1475 (int)mac[3], (int)mac[4], (int)mac[5], 1476 (unsigned int)htons(key)); 1477 1478 } 1479 1480 __LACPDEBUGUSED static void 1481 lacp_aggregator_str(struct lacp_aggregator *la, char *buf, size_t buflen) 1482 { 1483 1484 lacp_systemid_str(buf, buflen, la->la_sid.sid_prio, 1485 la->la_sid.sid_mac, la->la_sid.sid_key); 1486 } 1487 1488 static void 1489 lacp_peerinfo_idstr(const struct lacpdu_peerinfo *pi, 1490 char *buf, size_t buflen) 1491 { 1492 1493 lacp_systemid_str(buf, buflen, pi->lpi_system_prio, 1494 pi->lpi_system_mac, pi->lpi_key); 1495 } 1496 1497 static void 1498 lacp_state_str(uint8_t state, char *buf, size_t buflen) 1499 { 1500 1501 snprintb(buf, buflen, LACP_STATE_BITS, state); 1502 } 1503 1504 static struct lagg_port * 1505 lacp_select_tx_port(struct lacp_softc *lsc, struct mbuf *m, 1506 struct psref *psref) 1507 { 1508 struct lacp_portmap *pm; 1509 struct lagg_port *lp; 1510 uint32_t hash; 1511 size_t act; 1512 int s; 1513 1514 hash = lagg_hashmbuf(lsc->lsc_softc, m); 1515 1516 s = pserialize_read_enter(); 1517 act = LACP_PORTMAP_ACTIVE(lsc); 1518 pm = &lsc->lsc_portmaps[act]; 1519 1520 if (pm->pm_count == 0) { 1521 pserialize_read_exit(s); 1522 return NULL; 1523 } 1524 1525 hash %= pm->pm_count; 1526 lp = pm->pm_ports[hash]; 1527 lagg_port_getref(lp, psref); 1528 1529 pserialize_read_exit(s); 1530 1531 return lp; 1532 } 1533 1534 static void 1535 lacp_peerinfo_actor(struct lacp_softc *lsc, struct lacp_port *lacpp, 1536 struct lacpdu_peerinfo *dst) 1537 { 1538 1539 memcpy(dst->lpi_system_mac, lsc->lsc_system_mac, LACP_MAC_LEN); 1540 dst->lpi_system_prio = lsc->lsc_system_prio; 1541 dst->lpi_key = lsc->lsc_key; 1542 dst->lpi_port_no = lacpp->lp_actor.lpi_portno; 1543 dst->lpi_port_prio = lacpp->lp_actor.lpi_portprio; 1544 dst->lpi_state = lacpp->lp_actor.lpi_state; 1545 } 1546 1547 static void 1548 lacp_peerinfo_partner(struct lacp_port *lacpp, struct lacpdu_peerinfo *dst) 1549 { 1550 struct lacp_aggregator *la; 1551 1552 la = lacpp->lp_aggregator; 1553 1554 if (la != NULL) { 1555 memcpy(dst->lpi_system_mac, la->la_sid.sid_mac, LACP_MAC_LEN); 1556 dst->lpi_system_prio = la->la_sid.sid_prio; 1557 dst->lpi_key = la->la_sid.sid_key; 1558 } else { 1559 memset(dst->lpi_system_mac, 0, LACP_MAC_LEN); 1560 dst->lpi_system_prio = 0; 1561 dst->lpi_key = 0; 1562 } 1563 dst->lpi_port_no = lacpp->lp_partner.lpi_portno; 1564 dst->lpi_port_prio = lacpp->lp_partner.lpi_portprio; 1565 dst->lpi_state = lacpp->lp_partner.lpi_state; 1566 } 1567 1568 static int 1569 lacp_compare_peerinfo(struct lacpdu_peerinfo *a, struct lacpdu_peerinfo *b) 1570 { 1571 1572 return memcmp(a, b, offsetof(struct lacpdu_peerinfo, lpi_state)); 1573 } 1574 1575 static void 1576 lacp_sm_rx_record_default(struct lacp_softc *lsc, struct lacp_port *lacpp) 1577 { 1578 uint8_t oldpstate; 1579 struct lacp_portinfo *pi; 1580 char buf[LACP_STATESTR_LEN] __LACPDEBUGUSED; 1581 1582 pi = &lacpp->lp_partner; 1583 1584 oldpstate = pi->lpi_state; 1585 pi->lpi_portno = htons(LACP_PORTNO_NONE); 1586 pi->lpi_portprio = htons(0xffff); 1587 1588 if (lsc->lsc_optimistic) 1589 pi->lpi_state = LACP_PARTNER_ADMIN_OPTIMISTIC; 1590 else 1591 pi->lpi_state = LACP_PARTNER_ADMIN_STRICT; 1592 1593 SET(lacpp->lp_actor.lpi_state, LACP_STATE_DEFAULTED); 1594 1595 if (oldpstate != pi->lpi_state) { 1596 LACP_STATE_STR(oldpstate, buf, sizeof(buf)); 1597 LACP_DPRINTF((lsc, lacpp, "oldpstate %s\n", buf)); 1598 1599 LACP_STATE_STR(pi->lpi_state, buf, sizeof(buf)); 1600 LACP_DPRINTF((lsc, lacpp, "newpstate %s\n", buf)); 1601 } 1602 } 1603 1604 static inline bool 1605 lacp_port_is_synced(struct lacp_softc *lsc, struct lacp_port *lacpp, 1606 struct lacpdu_peerinfo *my_pi, struct lacpdu_peerinfo *peer_pi) 1607 { 1608 struct lacpdu_peerinfo actor; 1609 1610 if (!ISSET(peer_pi->lpi_state, LACP_STATE_ACTIVITY) && 1611 (!ISSET(my_pi->lpi_state, LACP_STATE_ACTIVITY) || 1612 !ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_ACTIVITY))) 1613 return false; 1614 1615 if (!ISSET(peer_pi->lpi_state, LACP_STATE_AGGREGATION)) 1616 return false; 1617 1618 lacp_peerinfo_actor(lsc, lacpp, &actor); 1619 if (lacp_compare_peerinfo(&actor, my_pi) != 0) 1620 return false; 1621 1622 if (!LACP_STATE_EQ(actor.lpi_state, my_pi->lpi_state, 1623 LACP_STATE_AGGREGATION)) { 1624 return false; 1625 } 1626 1627 return true; 1628 } 1629 1630 static void 1631 lacp_sm_rx_record_peerinfo(struct lacp_softc *lsc, struct lacp_port *lacpp, 1632 struct lacpdu_peerinfo *my_pi, struct lacpdu_peerinfo *peer_pi) 1633 { 1634 char buf[LACP_STATESTR_LEN] __LACPDEBUGUSED; 1635 uint8_t oldpstate; 1636 struct lacp_portinfo *pi; 1637 struct lacp_aggregator_systemid *sid; 1638 1639 pi = &lacpp->lp_partner; 1640 sid = &lacpp->lp_aggregator_sidbuf; 1641 1642 oldpstate = lacpp->lp_partner.lpi_state; 1643 1644 sid->sid_prio = peer_pi->lpi_system_prio; 1645 sid->sid_key = peer_pi->lpi_key; 1646 memcpy(sid->sid_mac, peer_pi->lpi_system_mac, 1647 sizeof(sid->sid_mac)); 1648 1649 pi->lpi_portno = peer_pi->lpi_port_no; 1650 pi->lpi_portprio = peer_pi->lpi_port_prio; 1651 pi->lpi_state = peer_pi->lpi_state; 1652 1653 if (lacp_port_is_synced(lsc, lacpp, my_pi, peer_pi)) { 1654 if (lsc->lsc_optimistic) 1655 SET(lacpp->lp_partner.lpi_state, LACP_STATE_SYNC); 1656 } else { 1657 CLR(lacpp->lp_partner.lpi_state, LACP_STATE_SYNC); 1658 } 1659 1660 CLR(lacpp->lp_actor.lpi_state, LACP_STATE_DEFAULTED); 1661 1662 if (oldpstate != lacpp->lp_partner.lpi_state) { 1663 LACP_STATE_STR(oldpstate, buf, sizeof(buf)); 1664 LACP_DPRINTF((lsc, lacpp, "oldpstate %s\n", buf)); 1665 1666 LACP_STATE_STR(lacpp->lp_partner.lpi_state, 1667 buf, sizeof(buf)); 1668 LACP_DPRINTF((lsc, lacpp, "newpstate %s\n", buf)); 1669 } 1670 1671 lacp_sm_ptx_update_timeout(lacpp, oldpstate); 1672 } 1673 1674 static void 1675 lacp_sm_rx_set_expired(struct lacp_port *lacpp) 1676 { 1677 1678 CLR(lacpp->lp_partner.lpi_state, LACP_STATE_SYNC); 1679 SET(lacpp->lp_partner.lpi_state, LACP_STATE_TIMEOUT); 1680 LACP_TIMER_ARM(lacpp, LACP_TIMER_CURRENT_WHILE, 1681 LACP_SHORT_TIMEOUT_TIME); 1682 SET(lacpp->lp_actor.lpi_state, LACP_STATE_EXPIRED); 1683 } 1684 1685 static void 1686 lacp_sm_port_init(struct lacp_softc *lsc, struct lacp_port *lacpp, 1687 struct lagg_port *lp) 1688 { 1689 1690 KASSERT(LACP_LOCKED(lsc)); 1691 1692 lacpp->lp_laggport = lp; 1693 lacpp->lp_actor.lpi_state = LACP_STATE_ACTIVITY; 1694 lacpp->lp_actor.lpi_portno = htons(if_get_index(lp->lp_ifp)); 1695 lacpp->lp_actor.lpi_portprio = htons(LACP_PORT_PRIO); 1696 lacpp->lp_partner.lpi_state = LACP_STATE_TIMEOUT; 1697 lacpp->lp_aggregator = NULL; 1698 lacpp->lp_marker_xid = 0; 1699 lacpp->lp_mux_state = LACP_MUX_INIT; 1700 1701 lacp_set_mux(lsc, lacpp, LACP_MUX_DETACHED); 1702 lacp_sm_rx_record_default(lsc, lacpp); 1703 } 1704 1705 static void 1706 lacp_port_disable(struct lacp_softc *lsc, struct lacp_port *lacpp) 1707 { 1708 1709 if (ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_AGGREGATION)) 1710 LACP_DPRINTF((lsc, lacpp, "enable -> disable\n")); 1711 1712 lacp_set_mux(lsc, lacpp, LACP_MUX_DETACHED); 1713 lacp_sm_rx_record_default(lsc, lacpp); 1714 CLR(lacpp->lp_actor.lpi_state, 1715 LACP_STATE_AGGREGATION | LACP_STATE_EXPIRED); 1716 CLR(lacpp->lp_partner.lpi_state, LACP_STATE_AGGREGATION); 1717 } 1718 1719 static void 1720 lacp_port_enable(struct lacp_softc *lsc __LACPDEBUGUSED, 1721 struct lacp_port *lacpp) 1722 { 1723 1724 if (!ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_AGGREGATION)) 1725 LACP_DPRINTF((lsc, lacpp, "disable -> enable\n")); 1726 1727 SET(lacpp->lp_actor.lpi_state, LACP_STATE_AGGREGATION); 1728 lacp_sm_rx_set_expired(lacpp); 1729 } 1730 1731 static void 1732 lacp_sm_rx_timer(struct lacp_softc *lsc, struct lacp_port *lacpp) 1733 { 1734 1735 if (!ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_EXPIRED)) { 1736 /* CURRENT -> EXPIRED */ 1737 LACP_DPRINTF((lsc, lacpp, "CURRENT -> EXPIRED\n")); 1738 lacp_sm_rx_set_expired(lacpp); 1739 } else { 1740 LACP_DPRINTF((lsc, lacpp, "EXPIRED -> DEFAULTED\n")); 1741 lacp_set_mux(lsc, lacpp, LACP_MUX_DETACHED); 1742 lacp_sm_rx_record_default(lsc, lacpp); 1743 } 1744 } 1745 1746 static void 1747 lacp_sm_ptx_timer(struct lacp_softc *lsc __unused, struct lacp_port *lacpp) 1748 { 1749 1750 lacp_sm_assert_ntt(lacpp); 1751 } 1752 1753 static void 1754 lacp_sm_ptx_schedule(struct lacp_port *lacpp) 1755 { 1756 int timeout; 1757 1758 /* no periodic */ 1759 if (!ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_ACTIVITY) && 1760 !ISSET(lacpp->lp_partner.lpi_state, LACP_STATE_ACTIVITY)) { 1761 LACP_TIMER_DISARM(lacpp, LACP_TIMER_PERIODIC); 1762 return; 1763 } 1764 1765 if (LACP_TIMER_ISARMED(lacpp, LACP_TIMER_PERIODIC)) 1766 return; 1767 1768 timeout = ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_TIMEOUT) ? 1769 LACP_FAST_PERIODIC_TIME : LACP_SLOW_PERIODIC_TIME; 1770 1771 LACP_TIMER_ARM(lacpp, LACP_TIMER_PERIODIC, timeout); 1772 } 1773 1774 static void 1775 lacp_sm_ptx_update_timeout(struct lacp_port *lacpp, uint8_t oldpstate) 1776 { 1777 1778 if (LACP_STATE_EQ(oldpstate, lacpp->lp_partner.lpi_state, 1779 LACP_STATE_TIMEOUT)) 1780 return; 1781 1782 LACP_DPRINTF((NULL, lacpp, "partner timeout changed\n")); 1783 1784 LACP_TIMER_DISARM(lacpp, LACP_TIMER_PERIODIC); 1785 1786 /* if timeout has been shorted, assert NTT */ 1787 if (ISSET(lacpp->lp_partner.lpi_state, LACP_STATE_TIMEOUT)) 1788 lacp_sm_assert_ntt(lacpp); 1789 } 1790 1791 static void 1792 lacp_sm_mux_timer(struct lacp_softc *lsc __LACPDEBUGUSED, 1793 struct lacp_port *lacpp) 1794 { 1795 char buf[LACP_SYSTEMIDSTR_LEN] __LACPDEBUGUSED; 1796 1797 KASSERT(lacpp->lp_pending > 0); 1798 1799 LACP_AGGREGATOR_STR(lacpp->lp_aggregator, buf, sizeof(buf)); 1800 LACP_DPRINTF((lsc, lacpp, "aggregator %s, pending %d -> %d\n", 1801 buf, lacpp->lp_pending, lacpp->lp_pending -1)); 1802 1803 lacpp->lp_pending--; 1804 } 1805 1806 static void 1807 lacp_sm_rx_update_selected(struct lacp_softc *lsc, struct lacp_port *lacpp, 1808 struct lacpdu_peerinfo *peer_pi) 1809 { 1810 struct lacpdu_peerinfo partner; 1811 char str0[LACP_SYSTEMIDSTR_LEN] __LACPDEBUGUSED; 1812 char str1[LACP_SYSTEMIDSTR_LEN] __LACPDEBUGUSED; 1813 1814 if (lacpp->lp_aggregator == NULL) 1815 return; 1816 1817 lacp_peerinfo_partner(lacpp, &partner); 1818 if (lacp_compare_peerinfo(peer_pi, &partner) != 0) { 1819 LACP_PEERINFO_IDSTR(&partner, str0, sizeof(str0)); 1820 LACP_PEERINFO_IDSTR(peer_pi, str1, sizeof(str1)); 1821 LACP_DPRINTF((lsc, lacpp, 1822 "different peerinfo, %s vs %s\n", str0, str1)); 1823 goto do_unselect; 1824 } 1825 1826 if (!LACP_STATE_EQ(lacpp->lp_partner.lpi_state, 1827 peer_pi->lpi_state, LACP_STATE_AGGREGATION)) { 1828 LACP_DPRINTF((lsc, lacpp, 1829 "STATE_AGGREGATION changed %d -> %d\n", 1830 ISSET(lacpp->lp_partner.lpi_state, 1831 LACP_STATE_AGGREGATION) != 0, 1832 ISSET(peer_pi->lpi_state, LACP_STATE_AGGREGATION) != 0)); 1833 goto do_unselect; 1834 } 1835 1836 return; 1837 1838 do_unselect: 1839 lacpp->lp_selected = LACP_UNSELECTED; 1840 /* lacpp->lp_aggregator will be released at lacp_set_mux() */ 1841 } 1842 1843 static void 1844 lacp_sm_rx_update_ntt(struct lacp_softc *lsc, struct lacp_port *lacpp, 1845 struct lacpdu_peerinfo *my_pi) 1846 { 1847 struct lacpdu_peerinfo actor; 1848 1849 lacp_peerinfo_actor(lsc, lacpp, &actor); 1850 1851 if (lacp_compare_peerinfo(&actor, my_pi) != 0 || 1852 !LACP_STATE_EQ(lacpp->lp_actor.lpi_state, my_pi->lpi_state, 1853 LACP_STATE_ACTIVITY | LACP_STATE_SYNC | LACP_STATE_AGGREGATION)) { 1854 LACP_DPRINTF((lsc, lacpp, "assert ntt\n")); 1855 lacp_sm_assert_ntt(lacpp); 1856 } 1857 } 1858 1859 static void 1860 lacp_sm_rx(struct lacp_softc *lsc, struct lacp_port *lacpp, 1861 struct lacpdu_peerinfo *my_pi, struct lacpdu_peerinfo *peer_pi) 1862 { 1863 int timeout; 1864 1865 KASSERT(LACP_LOCKED(lsc)); 1866 1867 /* check LACP disabled first */ 1868 if (!ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_AGGREGATION)) 1869 return; 1870 1871 /* check loopback condition */ 1872 if (memcmp(lsc->lsc_system_mac, peer_pi->lpi_system_mac, 1873 LACP_MAC_LEN) == 0 && 1874 lsc->lsc_system_prio == peer_pi->lpi_system_prio) 1875 return; 1876 1877 lacp_sm_rx_update_selected(lsc, lacpp, peer_pi); 1878 lacp_sm_rx_update_ntt(lsc, lacpp, my_pi); 1879 lacp_sm_rx_record_peerinfo(lsc, lacpp, my_pi, peer_pi); 1880 1881 timeout = ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_TIMEOUT) ? 1882 LACP_SHORT_TIMEOUT_TIME : LACP_LONG_TIMEOUT_TIME; 1883 LACP_TIMER_ARM(lacpp, LACP_TIMER_CURRENT_WHILE, timeout); 1884 1885 CLR(lacpp->lp_actor.lpi_state, LACP_STATE_EXPIRED); 1886 1887 /* kick transmit machine without timeout. */ 1888 lacp_sm_tx(lsc, lacpp); 1889 } 1890 1891 static void 1892 lacp_disable_collecting(struct lacp_port *lacpp) 1893 { 1894 1895 LACP_DPRINTF((NULL, lacpp, "collecting disabled\n")); 1896 CLR(lacpp->lp_actor.lpi_state, LACP_STATE_COLLECTING); 1897 atomic_store_relaxed(&lacpp->lp_collector, false); 1898 } 1899 1900 static void 1901 lacp_enable_collecting(struct lacp_port *lacpp) 1902 { 1903 LACP_DPRINTF((NULL, lacpp, "collecting enabled\n")); 1904 SET(lacpp->lp_actor.lpi_state, LACP_STATE_COLLECTING); 1905 atomic_store_relaxed(&lacpp->lp_collector, true); 1906 } 1907 1908 static void 1909 lacp_update_portmap(struct lacp_softc *lsc) 1910 { 1911 struct lagg_softc *sc; 1912 struct lacp_aggregator *la; 1913 struct lacp_portmap *pm_act, *pm_next; 1914 struct lacp_port *lacpp; 1915 size_t pmap, n; 1916 u_int link; 1917 1918 KASSERT(LACP_LOCKED(lsc)); 1919 1920 la = lsc->lsc_aggregator; 1921 1922 pmap = LACP_PORTMAP_ACTIVE(lsc); 1923 pm_act = &lsc->lsc_portmaps[pmap]; 1924 1925 pmap = LACP_PORTMAP_NEXT(lsc); 1926 pm_next = &lsc->lsc_portmaps[pmap]; 1927 1928 n = 0; 1929 if (la != NULL) { 1930 LIST_FOREACH(lacpp, &la->la_ports, lp_entry_la) { 1931 if (!ISSET(lacpp->lp_actor.lpi_state, 1932 LACP_STATE_DISTRIBUTING)) { 1933 continue; 1934 } 1935 1936 pm_next->pm_ports[n] = lacpp->lp_laggport; 1937 n++; 1938 1939 if (n >= LACP_MAX_PORTS) 1940 break; 1941 } 1942 } 1943 pm_next->pm_count = n; 1944 1945 atomic_store_release(&lsc->lsc_activemap, pmap); 1946 pserialize_perform(lsc->lsc_psz); 1947 1948 LACP_DPRINTF((lsc, NULL, "portmap count updated (%zu -> %zu)\n", 1949 pm_act->pm_count, pm_next->pm_count)); 1950 1951 link = lacp_portmap_linkstate(pm_next); 1952 if (link != lacp_portmap_linkstate(pm_act)) { 1953 sc = lsc->lsc_softc; 1954 if_link_state_change(&sc->sc_if, link); 1955 } 1956 1957 /* cleanup */ 1958 pm_act->pm_count = 0; 1959 memset(pm_act->pm_ports, 0, sizeof(pm_act->pm_ports)); 1960 } 1961 1962 static void 1963 lacp_disable_distributing(struct lacp_softc *lsc, struct lacp_port *lacpp) 1964 { 1965 struct lacp_portmap *pm; 1966 bool do_update; 1967 size_t act, i; 1968 int s; 1969 1970 KASSERT(LACP_LOCKED(lsc)); 1971 1972 LACP_DPRINTF((lsc, lacpp, "distributing disabled\n")); 1973 CLR(lacpp->lp_actor.lpi_state, LACP_STATE_DISTRIBUTING); 1974 1975 s = pserialize_read_enter(); 1976 act = LACP_PORTMAP_ACTIVE(lsc); 1977 pm = &lsc->lsc_portmaps[act]; 1978 1979 do_update = false; 1980 for (i = 0; i < pm->pm_count; i++) { 1981 if (pm->pm_ports[i] == lacpp->lp_laggport) { 1982 do_update = true; 1983 break; 1984 } 1985 } 1986 pserialize_read_exit(s); 1987 1988 if (do_update) 1989 lacp_update_portmap(lsc); 1990 } 1991 1992 static void 1993 lacp_enable_distributing(struct lacp_softc *lsc, struct lacp_port *lacpp) 1994 { 1995 1996 KASSERT(LACP_LOCKED(lsc)); 1997 1998 KASSERT(lacp_isactive(lsc, lacpp)); 1999 2000 LACP_DPRINTF((lsc, lacpp, "distributing enabled\n")); 2001 SET(lacpp->lp_actor.lpi_state, LACP_STATE_DISTRIBUTING); 2002 lacp_suppress_distributing(lsc); 2003 lacp_update_portmap(lsc); 2004 } 2005 2006 static void 2007 lacp_select_active_aggregator(struct lacp_softc *lsc) 2008 { 2009 struct lacp_aggregator *la, *best_la; 2010 char str[LACP_SYSTEMIDSTR_LEN] __LACPDEBUGUSED; 2011 2012 KASSERT(LACP_LOCKED(lsc)); 2013 2014 la = lsc->lsc_aggregator; 2015 if (la != NULL && la->la_attached_port > 0) { 2016 best_la = la; 2017 } else { 2018 best_la = NULL; 2019 } 2020 2021 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 2022 if (la->la_attached_port <= 0) 2023 continue; 2024 2025 if (best_la == NULL || 2026 LACP_SYS_PRI(la) < LACP_SYS_PRI(best_la)) 2027 best_la = la; 2028 } 2029 2030 if (best_la != lsc->lsc_aggregator) { 2031 LACP_DPRINTF((lsc, NULL, "active aggregator changed\n")); 2032 2033 if (lsc->lsc_aggregator != NULL) { 2034 LACP_AGGREGATOR_STR(lsc->lsc_aggregator, 2035 str, sizeof(str)); 2036 } else { 2037 snprintf(str, sizeof(str), "(null)"); 2038 } 2039 LACP_DPRINTF((lsc, NULL, "old aggregator=%s\n", str)); 2040 2041 if (best_la != NULL) { 2042 LACP_AGGREGATOR_STR(best_la, str, sizeof(str)); 2043 } else { 2044 snprintf(str, sizeof(str), "(null)"); 2045 } 2046 LACP_DPRINTF((lsc, NULL, "new aggregator=%s\n", str)); 2047 2048 lsc->lsc_aggregator = best_la; 2049 } 2050 } 2051 2052 static void 2053 lacp_port_attached(struct lacp_softc *lsc, struct lacp_port *lacpp) 2054 { 2055 struct lacp_aggregator *la; 2056 2057 KASSERT(LACP_LOCKED(lsc)); 2058 2059 if (ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_SYNC)) 2060 return; 2061 2062 la = lacpp->lp_aggregator; 2063 KASSERT(la != NULL); 2064 KASSERT(la->la_attached_port >= 0); 2065 2066 SET(lacpp->lp_actor.lpi_state, LACP_STATE_SYNC); 2067 la->la_attached_port++; 2068 lacp_select_active_aggregator(lsc); 2069 } 2070 2071 static void 2072 lacp_port_detached(struct lacp_softc *lsc, struct lacp_port *lacpp) 2073 { 2074 struct lacp_aggregator *la; 2075 2076 KASSERT(LACP_LOCKED(lsc)); 2077 2078 if (!ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_SYNC)) 2079 return; 2080 2081 la = lacpp->lp_aggregator; 2082 KASSERT(la != NULL); 2083 KASSERT(la->la_attached_port > 0); 2084 2085 CLR(lacpp->lp_actor.lpi_state, LACP_STATE_SYNC); 2086 la->la_attached_port--; 2087 lacp_select_active_aggregator(lsc); 2088 } 2089 2090 static int 2091 lacp_set_mux(struct lacp_softc *lsc, struct lacp_port *lacpp, 2092 enum lacp_mux_state new_state) 2093 { 2094 struct lagg_softc *sc; 2095 struct ifnet *ifp; 2096 2097 KASSERT(LACP_LOCKED(lsc)); 2098 2099 sc = lacpp->lp_laggport->lp_softc; 2100 ifp = &sc->sc_if; 2101 2102 if (lacpp->lp_mux_state == new_state) { 2103 return -1; 2104 } 2105 2106 switch (new_state) { 2107 case LACP_MUX_DETACHED: 2108 lacp_port_detached(lsc, lacpp); 2109 lacp_disable_distributing(lsc, lacpp); 2110 lacp_disable_collecting(lacpp); 2111 lacp_sm_assert_ntt(lacpp); 2112 /* cancel timer */ 2113 if (LACP_TIMER_ISARMED(lacpp, LACP_TIMER_WAIT_WHILE)) { 2114 KASSERT(lacpp->lp_pending > 0); 2115 lacpp->lp_pending--; 2116 LACP_TIMER_DISARM(lacpp, LACP_TIMER_WAIT_WHILE); 2117 } 2118 lacp_unselect(lsc, lacpp); 2119 break; 2120 case LACP_MUX_WAITING: 2121 LACP_TIMER_ARM(lacpp, LACP_TIMER_WAIT_WHILE, 2122 LACP_AGGREGATE_WAIT_TIME); 2123 lacpp->lp_pending++; 2124 break; 2125 case LACP_MUX_STANDBY: 2126 #ifdef LACP_STANDBY_SYNCED 2127 lacp_port_attached(lsc, lacpp); 2128 lacp_disable_collecting(lacpp); 2129 lacp_sm_assert_ntt(lacpp); 2130 #endif 2131 break; 2132 case LACP_MUX_ATTACHED: 2133 lacp_port_attached(lsc, lacpp); 2134 lacp_disable_collecting(lacpp); 2135 lacp_sm_assert_ntt(lacpp); 2136 break; 2137 case LACP_MUX_COLLECTING: 2138 lacp_enable_collecting(lacpp); 2139 lacp_disable_distributing(lsc, lacpp); 2140 lacp_sm_assert_ntt(lacpp); 2141 break; 2142 case LACP_MUX_DISTRIBUTING: 2143 lacp_enable_distributing(lsc, lacpp); 2144 break; 2145 case LACP_MUX_INIT: 2146 default: 2147 panic("%s: unknown state", ifp->if_xname); 2148 } 2149 2150 LACP_DPRINTF((lsc, lacpp, "mux_state %d -> %d\n", 2151 lacpp->lp_mux_state, new_state)); 2152 2153 lacpp->lp_mux_state = new_state; 2154 return 0; 2155 } 2156 2157 static void 2158 lacp_sm_mux(struct lacp_softc *lsc, struct lacp_port *lacpp) 2159 { 2160 struct lacp_aggregator *la __diagused; 2161 enum lacp_mux_state next_state; 2162 enum lacp_selected selected; 2163 bool p_sync, p_collecting; 2164 2165 p_sync = ISSET(lacpp->lp_partner.lpi_state, LACP_STATE_SYNC); 2166 p_collecting = ISSET(lacpp->lp_partner.lpi_state, 2167 LACP_STATE_COLLECTING); 2168 2169 do { 2170 next_state = lacpp->lp_mux_state; 2171 la = lacpp->lp_aggregator; 2172 selected = lacpp->lp_selected; 2173 KASSERT(la != NULL || 2174 lacpp->lp_mux_state == LACP_MUX_DETACHED); 2175 2176 switch (lacpp->lp_mux_state) { 2177 case LACP_MUX_DETACHED: 2178 if (selected != LACP_UNSELECTED) 2179 next_state = LACP_MUX_WAITING; 2180 break; 2181 case LACP_MUX_WAITING: 2182 KASSERTMSG((lacpp->lp_pending > 0 || 2183 !LACP_TIMER_ISARMED(lacpp, LACP_TIMER_WAIT_WHILE)), 2184 "lp_pending=%d, timer=%d", lacpp->lp_pending, 2185 !LACP_TIMER_ISARMED(lacpp, LACP_TIMER_WAIT_WHILE)); 2186 2187 if (selected == LACP_UNSELECTED) { 2188 next_state = LACP_MUX_DETACHED; 2189 } else if (lacpp->lp_pending == 0) { 2190 if (selected == LACP_SELECTED) { 2191 next_state = LACP_MUX_ATTACHED; 2192 } else if (selected == LACP_STANDBY) { 2193 next_state = LACP_MUX_STANDBY; 2194 } else { 2195 next_state = LACP_MUX_DETACHED; 2196 } 2197 } 2198 break; 2199 case LACP_MUX_STANDBY: 2200 if (selected == LACP_SELECTED) { 2201 next_state = LACP_MUX_ATTACHED; 2202 } else if (selected != LACP_STANDBY) { 2203 next_state = LACP_MUX_DETACHED; 2204 } 2205 break; 2206 case LACP_MUX_ATTACHED: 2207 if (selected != LACP_SELECTED) { 2208 next_state = LACP_MUX_DETACHED; 2209 } else if (lacp_isactive(lsc, lacpp) && p_sync) { 2210 next_state = LACP_MUX_COLLECTING; 2211 } 2212 break; 2213 case LACP_MUX_COLLECTING: 2214 if (selected != LACP_SELECTED || 2215 !lacp_isactive(lsc, lacpp) 2216 || !p_sync) { 2217 next_state = LACP_MUX_ATTACHED; 2218 } else if (p_collecting) { 2219 next_state = LACP_MUX_DISTRIBUTING; 2220 } 2221 break; 2222 case LACP_MUX_DISTRIBUTING: 2223 if (selected != LACP_SELECTED || 2224 !lacp_isactive(lsc, lacpp) 2225 || !p_sync || !p_collecting) { 2226 next_state = LACP_MUX_COLLECTING; 2227 LACP_DPRINTF((lsc, lacpp, 2228 "Interface stopped DISTRIBUTING," 2229 " possible flapping\n")); 2230 } 2231 break; 2232 case LACP_MUX_INIT: 2233 default: 2234 panic("%s: unknown state", 2235 lsc->lsc_softc->sc_if.if_xname); 2236 } 2237 } while (lacp_set_mux(lsc, lacpp, next_state) == 0); 2238 } 2239 2240 static bool 2241 lacp_aggregator_is_match(struct lacp_aggregator_systemid *a, 2242 struct lacp_aggregator_systemid *b) 2243 { 2244 2245 if (a->sid_prio != b->sid_prio) 2246 return false; 2247 2248 if (a->sid_key != b->sid_key) 2249 return false; 2250 2251 if (memcmp(a->sid_mac, b->sid_mac, sizeof(a->sid_mac)) != 0) 2252 return false; 2253 2254 return true; 2255 } 2256 2257 static void 2258 lacp_selected_update(struct lacp_softc *lsc, struct lacp_aggregator *la) 2259 { 2260 struct lacp_port *lacpp; 2261 size_t nselected; 2262 uint32_t media; 2263 2264 KASSERT(LACP_LOCKED(lsc)); 2265 2266 lacpp = LIST_FIRST(&la->la_ports); 2267 if (lacpp == NULL) 2268 return; 2269 2270 media = lacpp->lp_media; 2271 nselected = 0; 2272 LIST_FOREACH(lacpp, &la->la_ports, lp_entry_la) { 2273 if (nselected >= lsc->lsc_max_ports || 2274 (!lsc->lsc_multi_linkspeed && media != lacpp->lp_media)) { 2275 if (lacpp->lp_selected == LACP_SELECTED) 2276 lacpp->lp_selected = LACP_STANDBY; 2277 continue; 2278 } 2279 2280 switch (lacpp->lp_selected) { 2281 case LACP_STANDBY: 2282 lacpp->lp_selected = LACP_SELECTED; 2283 /* fall through */ 2284 case LACP_SELECTED: 2285 nselected++; 2286 break; 2287 default: 2288 /* do nothing */ 2289 break; 2290 } 2291 } 2292 } 2293 2294 static void 2295 lacp_select(struct lacp_softc *lsc, struct lacp_port *lacpp) 2296 { 2297 struct lacp_aggregator *la; 2298 struct lacp_aggregator_systemid *sid; 2299 struct lacp_port *lacpp0; 2300 char buf[LACP_SYSTEMIDSTR_LEN] __LACPDEBUGUSED; 2301 bool insert_after; 2302 2303 if (lacpp->lp_aggregator != NULL) 2304 return; 2305 2306 /* If we haven't heard from our peer, skip this step. */ 2307 if (ISSET(lacpp->lp_actor.lpi_state, LACP_STATE_DEFAULTED)) 2308 return 2309 2310 KASSERT(!LACP_TIMER_ISARMED(lacpp, LACP_TIMER_WAIT_WHILE)); 2311 2312 sid = &lacpp->lp_aggregator_sidbuf; 2313 2314 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { 2315 if (lacp_aggregator_is_match(&la->la_sid, sid)) 2316 break; 2317 } 2318 2319 if (la == NULL) { 2320 la = kmem_zalloc(sizeof(*la), KM_NOSLEEP); 2321 if (la == NULL) { 2322 LACP_DPRINTF((lsc, lacpp, 2323 "couldn't allocate aggregator\n")); 2324 /* will retry the next tick. */ 2325 return; 2326 } 2327 LIST_INIT(&la->la_ports); 2328 2329 la->la_sid = *sid; 2330 TAILQ_INSERT_TAIL(&lsc->lsc_aggregators, la, la_q); 2331 LACP_DPRINTF((lsc, lacpp, "a new aggregator created\n")); 2332 } else { 2333 LACP_DPRINTF((lsc, lacpp, "aggregator found\n")); 2334 } 2335 2336 KASSERT(la != NULL); 2337 LACP_AGGREGATOR_STR(la, buf, sizeof(buf)); 2338 LACP_DPRINTF((lsc, lacpp, "aggregator lagid=%s\n", buf)); 2339 2340 lacpp->lp_aggregator = la; 2341 lacpp->lp_selected = LACP_STANDBY; 2342 2343 insert_after = false; 2344 2345 LIST_FOREACH(lacpp0, &la->la_ports, lp_entry_la) { 2346 if (lacp_port_priority_max(lacpp0, lacpp) == lacpp) 2347 break; 2348 2349 if (LIST_NEXT(lacpp0, lp_entry_la) == NULL) { 2350 insert_after = true; 2351 break; 2352 } 2353 } 2354 2355 if (lacpp0 == NULL) { 2356 LIST_INSERT_HEAD(&la->la_ports, lacpp, lp_entry_la); 2357 } else if (insert_after) { 2358 LIST_INSERT_AFTER(lacpp0, lacpp, lp_entry_la); 2359 } else { 2360 LIST_INSERT_BEFORE(lacpp0, lacpp, lp_entry_la); 2361 } 2362 2363 lacp_selected_update(lsc, la); 2364 } 2365 2366 static void 2367 lacp_unselect(struct lacp_softc *lsc, struct lacp_port *lacpp) 2368 { 2369 struct lacp_aggregator *la; 2370 char buf[LACP_SYSTEMIDSTR_LEN] __LACPDEBUGUSED; 2371 bool remove_actaggr; 2372 2373 KASSERT(LACP_LOCKED(lsc)); 2374 KASSERT(!LACP_TIMER_ISARMED(lacpp, LACP_TIMER_WAIT_WHILE)); 2375 2376 la = lacpp->lp_aggregator; 2377 lacpp->lp_selected = LACP_UNSELECTED; 2378 2379 if (la == NULL) 2380 return; 2381 2382 KASSERT(!LIST_EMPTY(&la->la_ports)); 2383 2384 LACP_AGGREGATOR_STR(la, buf, sizeof(buf)); 2385 LACP_DPRINTF((lsc, lacpp, "unselect aggregator lagid=%s\n", buf)); 2386 2387 LIST_REMOVE(lacpp, lp_entry_la); 2388 lacpp->lp_aggregator = NULL; 2389 2390 if (LIST_EMPTY(&la->la_ports)) { 2391 remove_actaggr = false; 2392 2393 if (la == lsc->lsc_aggregator) { 2394 LACP_DPRINTF((lsc, NULL, "remove active aggregator\n")); 2395 lsc->lsc_aggregator = NULL; 2396 remove_actaggr = true; 2397 } 2398 2399 TAILQ_REMOVE(&lsc->lsc_aggregators, la, la_q); 2400 kmem_free(la, sizeof(*la)); 2401 2402 if (remove_actaggr) { 2403 lacp_select_active_aggregator(lsc); 2404 } 2405 } else { 2406 lacp_selected_update(lsc, la); 2407 } 2408 } 2409 2410 static void 2411 lacp_suppress_distributing(struct lacp_softc *lsc) 2412 { 2413 struct lacp_aggregator *la; 2414 struct lacp_port *lacpp; 2415 2416 KASSERT(LACP_LOCKED(lsc)); 2417 2418 la = lsc->lsc_aggregator; 2419 2420 LIST_FOREACH(lacpp, &la->la_ports, lp_entry_la) { 2421 if (ISSET(lacpp->lp_actor.lpi_state, 2422 LACP_STATE_DISTRIBUTING)) { 2423 lagg_workq_add(lsc->lsc_workq, 2424 &lacpp->lp_work_marker); 2425 } 2426 } 2427 2428 LACP_PTIMER_ARM(lsc, LACP_PTIMER_DISTRIBUTING, 2429 LACP_TRANSIT_DELAY); 2430 } 2431 2432 static void 2433 lacp_distributing_timer(struct lacp_softc *lsc) 2434 { 2435 2436 KASSERT(LACP_LOCKED(lsc)); 2437 2438 if (lsc->lsc_suppress_distributing) { 2439 LACP_DPRINTF((lsc, NULL, 2440 "disable suppress distributing\n")); 2441 lsc->lsc_suppress_distributing = false; 2442 } 2443 } 2444 2445 static struct mbuf * 2446 lacp_markerdu_mbuf(struct lacp_softc *lsc, struct lacp_port *lacpp) 2447 { 2448 struct ifnet *ifp_port; 2449 struct mbuf *m; 2450 struct markerdu *mdu; 2451 struct markerdu_info *mi; 2452 2453 KASSERT(LACP_LOCKED(lsc)); 2454 2455 ifp_port = lacpp->lp_laggport->lp_ifp; 2456 2457 MGETHDR(m, M_DONTWAIT, MT_DATA); 2458 if (m == NULL) { 2459 lsc->lsc_mgethdr_failed.ev_count++; 2460 return NULL; 2461 } 2462 2463 m->m_pkthdr.len = m->m_len = sizeof(*mdu); 2464 2465 mdu = mtod(m, struct markerdu *); 2466 2467 memset(mdu, 0, sizeof(*mdu)); 2468 2469 m->m_flags |= M_MCAST; 2470 memcpy(mdu->mdu_eh.ether_dhost, ethermulticastaddr_slowprotocols, 2471 ETHER_ADDR_LEN); 2472 memcpy(mdu->mdu_eh.ether_shost, CLLADDR(ifp_port->if_sadl), 2473 ETHER_ADDR_LEN); 2474 mdu->mdu_eh.ether_type = ntohs(ETHERTYPE_SLOWPROTOCOLS); 2475 mdu->mdu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_MARKER; 2476 mdu->mdu_sph.sph_version = 1; 2477 2478 mi = &mdu->mdu_info; 2479 tlv_set(&mdu->mdu_tlv_info, MARKER_TYPE_INFO, 2480 sizeof(*mi)); 2481 mi->mi_rq_port = lacpp->lp_actor.lpi_portno; 2482 mi->mi_rq_xid = htonl(lacpp->lp_marker_xid); 2483 memcpy(mi->mi_rq_system, lsc->lsc_system_mac, LACP_MAC_LEN); 2484 2485 mdu->mdu_tlv_term.tlv_type = MARKER_TYPE_TERMINATE; 2486 mdu->mdu_tlv_term.tlv_length = 0; 2487 2488 return m; 2489 } 2490 2491 static void 2492 lacp_marker_work(struct lagg_work *lw, void *xlsc) 2493 { 2494 struct lacp_softc *lsc; 2495 struct lacp_port *lacpp; 2496 struct lagg_port *lp; 2497 struct markerdu *mdu; 2498 struct mbuf *m; 2499 struct psref psref; 2500 int bound; 2501 2502 lsc = xlsc; 2503 lacpp = container_of(lw, struct lacp_port, lp_work_marker); 2504 2505 LACP_LOCK(lsc); 2506 lacpp->lp_marker_xid++; 2507 m = lacp_markerdu_mbuf(lsc, lacpp); 2508 if (m == NULL) { 2509 LACP_UNLOCK(lsc); 2510 return; 2511 } 2512 SET(lacpp->lp_flags, LACP_PORT_MARK); 2513 lsc->lsc_suppress_distributing = true; 2514 lp = lacpp->lp_laggport; 2515 bound = curlwp_bind(); 2516 lagg_port_getref(lp, &psref); 2517 LACP_UNLOCK(lsc); 2518 2519 if (LACP_ISDUMPING(lsc)) { 2520 lacp_dprintf(lsc, lacpp, "markerdu transmit\n"); 2521 mdu = mtod(m, struct markerdu *); 2522 lacp_dump_markertlv(&mdu->mdu_info, NULL); 2523 } 2524 2525 lagg_port_xmit(lp, m); 2526 lagg_port_putref(lp, &psref); 2527 curlwp_bindx(bound); 2528 } 2529 2530 static void 2531 lacp_dump_lacpdutlv(const struct lacpdu_peerinfo *pi_actor, 2532 const struct lacpdu_peerinfo *pi_partner, 2533 const struct lacpdu_collectorinfo *lci) 2534 { 2535 char str[LACP_STATESTR_LEN]; 2536 2537 if (pi_actor != NULL) { 2538 lacp_peerinfo_idstr(pi_actor, str, sizeof(str)); 2539 printf("actor=%s\n", str); 2540 lacp_state_str(pi_actor->lpi_state, 2541 str, sizeof(str)); 2542 printf("actor.state=%s portno=%d portprio=0x%04x\n", 2543 str, 2544 ntohs(pi_actor->lpi_port_no), 2545 ntohs(pi_actor->lpi_port_prio));; 2546 } else { 2547 printf("no actor info\n"); 2548 } 2549 2550 if (pi_partner != NULL) { 2551 lacp_peerinfo_idstr(pi_partner, str, sizeof(str)); 2552 printf("partner=%s\n", str); 2553 lacp_state_str(pi_partner->lpi_state, 2554 str, sizeof(str)); 2555 printf("partner.state=%s portno=%d portprio=0x%04x\n", 2556 str, 2557 ntohs(pi_partner->lpi_port_no), 2558 ntohs(pi_partner->lpi_port_prio)); 2559 } else { 2560 printf("no partner info\n"); 2561 } 2562 2563 if (lci != NULL) { 2564 printf("maxdelay=%d\n", ntohs(lci->lci_maxdelay)); 2565 } else { 2566 printf("no collector info\n"); 2567 } 2568 } 2569 2570 static void 2571 lacp_dump_markertlv(const struct markerdu_info *mi_info, 2572 const struct markerdu_info *mi_res) 2573 { 2574 2575 if (mi_info != NULL) { 2576 printf("marker info: port=%d, sys=%s, id=%u\n", 2577 ntohs(mi_info->mi_rq_port), 2578 ether_sprintf(mi_info->mi_rq_system), 2579 ntohl(mi_info->mi_rq_xid)); 2580 } 2581 2582 if (mi_res != NULL) { 2583 printf("marker resp: port=%d, sys=%s, id=%u\n", 2584 ntohs(mi_res->mi_rq_port), 2585 ether_sprintf(mi_res->mi_rq_system), 2586 ntohl(mi_res->mi_rq_xid)); 2587 2588 } 2589 } 2590 2591 static uint32_t 2592 lacp_ifmedia2lacpmedia(u_int ifmedia) 2593 { 2594 uint32_t rv; 2595 2596 switch (IFM_SUBTYPE(ifmedia)) { 2597 case IFM_10_T: 2598 case IFM_10_2: 2599 case IFM_10_5: 2600 case IFM_10_STP: 2601 case IFM_10_FL: 2602 rv = LACP_LINKSPEED_10; 2603 break; 2604 case IFM_100_TX: 2605 case IFM_100_FX: 2606 case IFM_100_T4: 2607 case IFM_100_VG: 2608 case IFM_100_T2: 2609 rv = LACP_LINKSPEED_100; 2610 break; 2611 case IFM_1000_SX: 2612 case IFM_1000_LX: 2613 case IFM_1000_CX: 2614 case IFM_1000_T: 2615 case IFM_1000_BX10: 2616 case IFM_1000_KX: 2617 rv = LACP_LINKSPEED_1000; 2618 break; 2619 case IFM_2500_SX: 2620 case IFM_2500_KX: 2621 rv = LACP_LINKSPEED_2500; 2622 break; 2623 case IFM_5000_T: 2624 rv = LACP_LINKSPEED_5000; 2625 break; 2626 case IFM_10G_LR: 2627 case IFM_10G_SR: 2628 case IFM_10G_CX4: 2629 case IFM_10G_TWINAX: 2630 case IFM_10G_TWINAX_LONG: 2631 case IFM_10G_LRM: 2632 case IFM_10G_T: 2633 rv = LACP_LINKSPEED_10G; 2634 break; 2635 default: 2636 rv = LACP_LINKSPEED_UNKNOWN; 2637 } 2638 2639 if (IFM_TYPE(ifmedia) == IFM_ETHER) 2640 SET(rv, LACP_MEDIA_ETHER); 2641 if ((ifmedia & IFM_FDX) != 0) 2642 SET(rv, LACP_MEDIA_FDX); 2643 2644 return rv; 2645 } 2646 2647 static void 2648 lacp_linkstate(struct lagg_proto_softc *xlsc, struct lagg_port *lp) 2649 { 2650 2651 IFNET_ASSERT_UNLOCKED(lp->lp_ifp); 2652 2653 IFNET_LOCK(lp->lp_ifp); 2654 lacp_linkstate_ifnet_locked(xlsc, lp); 2655 IFNET_UNLOCK(lp->lp_ifp); 2656 } 2657
Indexes created Tue Sep 30 17:09:57 GMT 2025