1 /* $NetBSD: ieee8023ad_lacp.c,v 1.3 2005/12/11 12:24:54 christos Exp $ */
2
3 /*-
4 * Copyright (c)2005 YAMAMOTO Takashi,
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD: releng/6.3/sys/net/ieee8023ad_lacp.c 173886 2007-11-24 19:45:58Z cvs2svn $");
31
32 #include <sys/param.h>
33 #include <sys/callout.h>
34 #include <sys/mbuf.h>
35 #include <sys/systm.h>
36 #include <sys/malloc.h>
37 #include <sys/kernel.h> /* hz */
38 #include <sys/socket.h> /* for net/if.h */
39 #include <sys/sockio.h>
40 #include <machine/stdarg.h>
41 #include <sys/lock.h>
42 #include <sys/rwlock.h>
43 #include <sys/taskqueue.h>
44
45 #include <net/if.h>
46 #include <net/if_dl.h>
47 #include <net/ethernet.h>
48 #include <net/if_media.h>
49 #include <net/if_types.h>
50
51 #include <net/if_lagg.h>
52 #include <net/ieee8023ad_lacp.h>
53
54 /*
55 * actor system priority and port priority.
56 * XXX should be configurable.
57 */
58
59 #define LACP_SYSTEM_PRIO 0x8000
60 #define LACP_PORT_PRIO 0x8000
61
62 const uint8_t ethermulticastaddr_slowprotocols[ETHER_ADDR_LEN] =
63 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x02 };
64
65 static const struct tlv_template lacp_info_tlv_template[] = {
66 { LACP_TYPE_ACTORINFO,
67 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) },
68 { LACP_TYPE_PARTNERINFO,
69 sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) },
70 { LACP_TYPE_COLLECTORINFO,
71 sizeof(struct tlvhdr) + sizeof(struct lacp_collectorinfo) },
72 { 0, 0 },
73 };
74
75 typedef void (*lacp_timer_func_t)(struct lacp_port *);
76
77 static const struct tlv_template marker_info_tlv_template[] = {
78 { MARKER_TYPE_INFO,
79 sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) },
80 { 0, 0 },
81 };
82
83 static const struct tlv_template marker_response_tlv_template[] = {
84 { MARKER_TYPE_RESPONSE,
85 sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) },
86 { 0, 0 },
87 };
88
89 static void lacp_fill_actorinfo(struct lacp_port *, struct lacp_peerinfo *);
90 static void lacp_fill_markerinfo(struct lacp_port *,
91 struct lacp_markerinfo *);
92
93 static uint64_t lacp_aggregator_bandwidth(struct lacp_aggregator *);
94 static void lacp_suppress_distributing(struct lacp_softc *,
95 struct lacp_aggregator *);
96 static void lacp_transit_expire(void *);
97 static void lacp_select_active_aggregator(struct lacp_softc *);
98 static uint16_t lacp_compose_key(struct lacp_port *);
99 static int tlv_check(const void *, size_t, const struct tlvhdr *,
100 const struct tlv_template *, boolean_t);
101 static void lacp_tick(void *);
102
103 static void lacp_fill_aggregator_id(struct lacp_aggregator *,
104 const struct lacp_port *);
105 static void lacp_fill_aggregator_id_peer(struct lacp_peerinfo *,
106 const struct lacp_peerinfo *);
107 static int lacp_aggregator_is_compatible(const struct lacp_aggregator *,
108 const struct lacp_port *);
109 static int lacp_peerinfo_is_compatible(const struct lacp_peerinfo *,
110 const struct lacp_peerinfo *);
111
112 static struct lacp_aggregator *lacp_aggregator_get(struct lacp_softc *,
113 struct lacp_port *);
114 static void lacp_aggregator_addref(struct lacp_softc *,
115 struct lacp_aggregator *);
116 static void lacp_aggregator_delref(struct lacp_softc *,
117 struct lacp_aggregator *);
118
119 /* receive machine */
120
121 static void lacp_dequeue(void *, int);
122 static int lacp_pdu_input(struct lagg_port *, struct mbuf *);
123 static int lacp_marker_input(struct lagg_port *, struct mbuf *);
124 static void lacp_sm_rx(struct lacp_port *, const struct lacpdu *);
125 static void lacp_sm_rx_timer(struct lacp_port *);
126 static void lacp_sm_rx_set_expired(struct lacp_port *);
127 static void lacp_sm_rx_update_ntt(struct lacp_port *,
128 const struct lacpdu *);
129 static void lacp_sm_rx_record_pdu(struct lacp_port *,
130 const struct lacpdu *);
131 static void lacp_sm_rx_update_selected(struct lacp_port *,
132 const struct lacpdu *);
133 static void lacp_sm_rx_record_default(struct lacp_port *);
134 static void lacp_sm_rx_update_default_selected(struct lacp_port *);
135 static void lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *,
136 const struct lacp_peerinfo *);
137
138 /* mux machine */
139
140 static void lacp_sm_mux(struct lacp_port *);
141 static void lacp_set_mux(struct lacp_port *, enum lacp_mux_state);
142 static void lacp_sm_mux_timer(struct lacp_port *);
143
144 /* periodic transmit machine */
145
146 static void lacp_sm_ptx_update_timeout(struct lacp_port *, uint8_t);
147 static void lacp_sm_ptx_tx_schedule(struct lacp_port *);
148 static void lacp_sm_ptx_timer(struct lacp_port *);
149
150 /* transmit machine */
151
152 static void lacp_sm_tx(struct lacp_port *);
153 static void lacp_sm_assert_ntt(struct lacp_port *);
154
155 static void lacp_run_timers(struct lacp_port *);
156 static int lacp_compare_peerinfo(const struct lacp_peerinfo *,
157 const struct lacp_peerinfo *);
158 static int lacp_compare_systemid(const struct lacp_systemid *,
159 const struct lacp_systemid *);
160 static void lacp_port_enable(struct lacp_port *);
161 static void lacp_port_disable(struct lacp_port *);
162 static void lacp_select(struct lacp_port *);
163 static void lacp_unselect(struct lacp_port *);
164 static void lacp_disable_collecting(struct lacp_port *);
165 static void lacp_enable_collecting(struct lacp_port *);
166 static void lacp_disable_distributing(struct lacp_port *);
167 static void lacp_enable_distributing(struct lacp_port *);
168 static int lacp_xmit_lacpdu(struct lacp_port *);
169 static int lacp_xmit_marker(struct lacp_port *);
170
171 #if defined(LACP_DEBUG)
172 static void lacp_dump_lacpdu(const struct lacpdu *);
173 static const char *lacp_format_partner(const struct lacp_peerinfo *, char *,
174 size_t);
175 static const char *lacp_format_lagid(const struct lacp_peerinfo *,
176 const struct lacp_peerinfo *, char *, size_t);
177 static const char *lacp_format_lagid_aggregator(const struct lacp_aggregator *,
178 char *, size_t);
179 static const char *lacp_format_state(uint8_t, char *, size_t);
180 static const char *lacp_format_mac(const uint8_t *, char *, size_t);
181 static const char *lacp_format_systemid(const struct lacp_systemid *, char *,
182 size_t);
183 static const char *lacp_format_portid(const struct lacp_portid *, char *,
184 size_t);
185 static void lacp_dprintf(const struct lacp_port *, const char *, ...)
186 __attribute__((__format__(__printf__, 2, 3)));
187 #define LACP_DPRINTF(a) lacp_dprintf a
188 #else
189 #define LACP_DPRINTF(a) /* nothing */
190 #endif
191
192 /*
193 * partner administration variables.
194 * XXX should be configurable.
195 */
196
197 static const struct lacp_peerinfo lacp_partner_admin = {
198 .lip_systemid = { .lsi_prio = 0xffff },
199 .lip_portid = { .lpi_prio = 0xffff },
200 #if 1
201 /* optimistic */
202 .lip_state = LACP_STATE_SYNC | LACP_STATE_AGGREGATION |
203 LACP_STATE_COLLECTING | LACP_STATE_DISTRIBUTING,
204 #else
205 /* pessimistic */
206 .lip_state = 0,
207 #endif
208 };
209
210 static const lacp_timer_func_t lacp_timer_funcs[LACP_NTIMER] = {
211 [LACP_TIMER_CURRENT_WHILE] = lacp_sm_rx_timer,
212 [LACP_TIMER_PERIODIC] = lacp_sm_ptx_timer,
213 [LACP_TIMER_WAIT_WHILE] = lacp_sm_mux_timer,
214 };
215
216 void
217 lacp_input(struct lagg_port *lgp, struct mbuf *m)
218 {
219 struct lagg_softc *sc = lgp->lp_softc;
220 struct lacp_softc *lsc = LACP_SOFTC(sc);
221 uint8_t subtype;
222
223 if (m->m_pkthdr.len < sizeof(struct ether_header) + sizeof(subtype)) {
224 m_freem(m);
225 return;
226 }
227
228 m_copydata(m, sizeof(struct ether_header), sizeof(subtype), &subtype);
229 switch (subtype) {
230 case SLOWPROTOCOLS_SUBTYPE_LACP:
231 IF_HANDOFF(&lsc->lsc_queue, m, NULL);
232 taskqueue_enqueue(taskqueue_swi, &lsc->lsc_qtask);
233 break;
234
235 case SLOWPROTOCOLS_SUBTYPE_MARKER:
236 lacp_marker_input(lgp, m);
237 break;
238
239 default:
240 /* Unknown LACP packet type */
241 m_freem(m);
242 break;
243 }
244 }
245
246 static void
247 lacp_dequeue(void *arg, int pending)
248 {
249 struct lacp_softc *lsc = (struct lacp_softc *)arg;
250 struct lagg_softc *sc = lsc->lsc_softc;
251 struct lagg_port *lgp;
252 struct mbuf *m;
253
254 LAGG_WLOCK(sc);
255 for (;;) {
256 IF_DEQUEUE(&lsc->lsc_queue, m);
257 if (m == NULL)
258 break;
259 lgp = m->m_pkthdr.rcvif->if_lagg;
260 lacp_pdu_input(lgp, m);
261 }
262 LAGG_WUNLOCK(sc);
263 }
264
265 /*
266 * lacp_pdu_input: process lacpdu
267 */
268 static int
269 lacp_pdu_input(struct lagg_port *lgp, struct mbuf *m)
270 {
271 struct lacp_port *lp = LACP_PORT(lgp);
272 struct lacpdu *du;
273 int error = 0;
274
275 LAGG_WLOCK_ASSERT(lgp->lp_softc);
276
277 if (m->m_pkthdr.len != sizeof(*du)) {
278 goto bad;
279 }
280
281 if (m->m_len < sizeof(*du)) {
282 m = m_pullup(m, sizeof(*du));
283 if (m == NULL) {
284 return (ENOMEM);
285 }
286 }
287
288 du = mtod(m, struct lacpdu *);
289
290 if (memcmp(&du->ldu_eh.ether_dhost,
291 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) {
292 goto bad;
293 }
294
295 /*
296 * ignore the version for compatibility with
297 * the future protocol revisions.
298 */
299 #if 0
300 if (du->ldu_sph.sph_version != 1) {
301 goto bad;
302 }
303 #endif
304
305 /*
306 * ignore tlv types for compatibility with
307 * the future protocol revisions.
308 */
309 if (tlv_check(du, sizeof(*du), &du->ldu_tlv_actor,
310 lacp_info_tlv_template, FALSE)) {
311 goto bad;
312 }
313
314 #if defined(LACP_DEBUG)
315 LACP_DPRINTF((lp, "lacpdu receive\n"));
316 lacp_dump_lacpdu(du);
317 #endif /* defined(LACP_DEBUG) */
318 lacp_sm_rx(lp, du);
319
320 m_freem(m);
321
322 return (error);
323
324 bad:
325 m_freem(m);
326 return (EINVAL);
327 }
328
329 static void
330 lacp_fill_actorinfo(struct lacp_port *lp, struct lacp_peerinfo *info)
331 {
332 struct lagg_port *lgp = lp->lp_lagg;
333 struct lagg_softc *sc = lgp->lp_softc;
334
335 info->lip_systemid.lsi_prio = htons(LACP_SYSTEM_PRIO);
336 memcpy(&info->lip_systemid.lsi_mac,
337 IF_LLADDR(sc->sc_ifp), ETHER_ADDR_LEN);
338 info->lip_portid.lpi_prio = htons(LACP_PORT_PRIO);
339 info->lip_portid.lpi_portno = htons(lp->lp_ifp->if_index);
340 info->lip_state = lp->lp_state;
341 }
342
343 static void
344 lacp_fill_markerinfo(struct lacp_port *lp, struct lacp_markerinfo *info)
345 {
346 struct ifnet *ifp = lp->lp_ifp;
347
348 /* Fill in the port index and system id (encoded as the MAC) */
349 info->mi_rq_port = htons(ifp->if_index);
350 memcpy(&info->mi_rq_system, lp->lp_systemid.lsi_mac, ETHER_ADDR_LEN);
351 info->mi_rq_xid = htonl(0);
352 }
353
354 static int
355 lacp_xmit_lacpdu(struct lacp_port *lp)
356 {
357 struct lagg_port *lgp = lp->lp_lagg;
358 struct mbuf *m;
359 struct lacpdu *du;
360 int error;
361
362 LAGG_WLOCK_ASSERT(lgp->lp_softc);
363
364 m = m_gethdr(M_DONTWAIT, MT_DATA);
365 if (m == NULL) {
366 return (ENOMEM);
367 }
368 m->m_len = m->m_pkthdr.len = sizeof(*du);
369
370 du = mtod(m, struct lacpdu *);
371 memset(du, 0, sizeof(*du));
372
373 memcpy(&du->ldu_eh.ether_dhost, ethermulticastaddr_slowprotocols,
374 ETHER_ADDR_LEN);
375 memcpy(&du->ldu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN);
376 du->ldu_eh.ether_type = htons(ETHERTYPE_SLOW);
377
378 du->ldu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_LACP;
379 du->ldu_sph.sph_version = 1;
380
381 TLV_SET(&du->ldu_tlv_actor, LACP_TYPE_ACTORINFO, sizeof(du->ldu_actor));
382 du->ldu_actor = lp->lp_actor;
383
384 TLV_SET(&du->ldu_tlv_partner, LACP_TYPE_PARTNERINFO,
385 sizeof(du->ldu_partner));
386 du->ldu_partner = lp->lp_partner;
387
388 TLV_SET(&du->ldu_tlv_collector, LACP_TYPE_COLLECTORINFO,
389 sizeof(du->ldu_collector));
390 du->ldu_collector.lci_maxdelay = 0;
391
392 #if defined(LACP_DEBUG)
393 LACP_DPRINTF((lp, "lacpdu transmit\n"));
394 lacp_dump_lacpdu(du);
395 #endif /* defined(LACP_DEBUG) */
396
397 m->m_flags |= M_MCAST;
398
399 /*
400 * XXX should use higher priority queue.
401 * otherwise network congestion can break aggregation.
402 */
403
404 error = lagg_enqueue(lp->lp_ifp, m);
405 return (error);
406 }
407
408 static int
409 lacp_xmit_marker(struct lacp_port *lp)
410 {
411 struct lagg_port *lgp = lp->lp_lagg;
412 struct mbuf *m;
413 struct markerdu *mdu;
414 int error;
415
416 LAGG_WLOCK_ASSERT(lgp->lp_softc);
417
418 m = m_gethdr(M_DONTWAIT, MT_DATA);
419 if (m == NULL) {
420 return (ENOMEM);
421 }
422 m->m_len = m->m_pkthdr.len = sizeof(*mdu);
423
424 mdu = mtod(m, struct markerdu *);
425 memset(mdu, 0, sizeof(*mdu));
426
427 memcpy(&mdu->mdu_eh.ether_dhost, ethermulticastaddr_slowprotocols,
428 ETHER_ADDR_LEN);
429 memcpy(&mdu->mdu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN);
430 mdu->mdu_eh.ether_type = htons(ETHERTYPE_SLOW);
431
432 mdu->mdu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_MARKER;
433 mdu->mdu_sph.sph_version = 1;
434
435 /* Bump the transaction id and copy over the marker info */
436 lp->lp_marker.mi_rq_xid = htonl(ntohl(lp->lp_marker.mi_rq_xid) + 1);
437 TLV_SET(&mdu->mdu_tlv, MARKER_TYPE_INFO, sizeof(mdu->mdu_info));
438 mdu->mdu_info = lp->lp_marker;
439
440 LACP_DPRINTF((lp, "marker transmit, port=%u, sys=%6D, id=%u\n",
441 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, ":",
442 ntohl(mdu->mdu_info.mi_rq_xid)));
443
444 m->m_flags |= M_MCAST;
445 error = lagg_enqueue(lp->lp_ifp, m);
446 return (error);
447 }
448 void
449 lacp_linkstate(struct lagg_port *lgp)
450 {
451 struct lacp_port *lp = LACP_PORT(lgp);
452 struct ifnet *ifp = lgp->lp_ifp;
453 struct ifmediareq ifmr;
454 int error = 0;
455 u_int media;
456 uint8_t old_state;
457 uint16_t old_key;
458
459 LAGG_WLOCK_ASSERT(lgp->lp_softc);
460
461 bzero((char *)&ifmr, sizeof(ifmr));
462 error = (*ifp->if_ioctl)(ifp, SIOCGIFMEDIA, (caddr_t)&ifmr);
463 if (error != 0)
464 return;
465
466 media = ifmr.ifm_active;
467 LACP_DPRINTF((lp, "media changed 0x%x -> 0x%x, ether = %d, fdx = %d, "
468 "link = %d\n", lp->lp_media, media, IFM_TYPE(media) == IFM_ETHER,
469 (media & IFM_FDX) != 0, ifp->if_link_state == LINK_STATE_UP));
470 old_state = lp->lp_state;
471 old_key = lp->lp_key;
472
473 lp->lp_media = media;
474 /*
475 * If the port is not an active full duplex Ethernet link then it can
476 * not be aggregated.
477 */
478 if (IFM_TYPE(media) != IFM_ETHER || (media & IFM_FDX) == 0 ||
479 ifp->if_link_state != LINK_STATE_UP) {
480 lacp_port_disable(lp);
481 } else {
482 lacp_port_enable(lp);
483 }
484 lp->lp_key = lacp_compose_key(lp);
485
486 if (old_state != lp->lp_state || old_key != lp->lp_key) {
487 LACP_DPRINTF((lp, "-> UNSELECTED\n"));
488 lp->lp_selected = LACP_UNSELECTED;
489 }
490 }
491
492 static void
493 lacp_tick(void *arg)
494 {
495 struct lacp_softc *lsc = arg;
496 struct lagg_softc *sc = lsc->lsc_softc;
497 struct lacp_port *lp;
498
499 LAGG_WLOCK(sc);
500 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) {
501 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0)
502 continue;
503
504 lacp_run_timers(lp);
505
506 lacp_select(lp);
507 lacp_sm_mux(lp);
508 lacp_sm_tx(lp);
509 lacp_sm_ptx_tx_schedule(lp);
510 }
511 LAGG_WUNLOCK(sc);
512 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc);
513 }
514
515 int
516 lacp_port_create(struct lagg_port *lgp)
517 {
518 struct lagg_softc *sc = lgp->lp_softc;
519 struct lacp_softc *lsc = LACP_SOFTC(sc);
520 struct lacp_port *lp;
521 struct ifnet *ifp = lgp->lp_ifp;
522 struct sockaddr_dl sdl;
523 struct ifmultiaddr *rifma = NULL;
524 int error;
525
526 boolean_t active = TRUE; /* XXX should be configurable */
527 boolean_t fast = FALSE; /* XXX should be configurable */
528
529 LAGG_WLOCK_ASSERT(sc);
530
531 bzero((char *)&sdl, sizeof(sdl));
532 sdl.sdl_len = sizeof(sdl);
533 sdl.sdl_family = AF_LINK;
534 sdl.sdl_index = ifp->if_index;
535 sdl.sdl_type = IFT_ETHER;
536 sdl.sdl_alen = ETHER_ADDR_LEN;
537
538 bcopy(ðermulticastaddr_slowprotocols,
539 LLADDR(&sdl), ETHER_ADDR_LEN);
540 error = if_addmulti(ifp, (struct sockaddr *)&sdl, &rifma);
541 if (error) {
542 printf("%s: ADDMULTI failed on %s\n", __func__, lgp->lp_ifname);
543 return (error);
544 }
545
546 lp = malloc(sizeof(struct lacp_port),
547 M_DEVBUF, M_NOWAIT|M_ZERO);
548 if (lp == NULL)
549 return (ENOMEM);
550
551 lgp->lp_psc = (caddr_t)lp;
552 lp->lp_ifp = ifp;
553 lp->lp_lagg = lgp;
554 lp->lp_lsc = lsc;
555
556 LIST_INSERT_HEAD(&lsc->lsc_ports, lp, lp_next);
557
558 lacp_fill_actorinfo(lp, &lp->lp_actor);
559 lacp_fill_markerinfo(lp, &lp->lp_marker);
560 lp->lp_state =
561 (active ? LACP_STATE_ACTIVITY : 0) |
562 (fast ? LACP_STATE_TIMEOUT : 0);
563 lp->lp_aggregator = NULL;
564 lacp_linkstate(lgp);
565 lacp_sm_rx_set_expired(lp);
566
567 return (0);
568 }
569
570 void
571 lacp_port_destroy(struct lagg_port *lgp)
572 {
573 struct lacp_port *lp = LACP_PORT(lgp);
574 struct ifnet *ifp = lgp->lp_ifp;
575 struct sockaddr_dl sdl;
576 int i, error;
577
578 LAGG_WLOCK_ASSERT(lgp->lp_softc);
579
580 for (i = 0; i < LACP_NTIMER; i++) {
581 LACP_TIMER_DISARM(lp, i);
582 }
583
584 lacp_disable_collecting(lp);
585 lacp_disable_distributing(lp);
586 lacp_unselect(lp);
587 lgp->lp_flags &= ~LAGG_PORT_DISABLED;
588
589 bzero((char *)&sdl, sizeof(sdl));
590 sdl.sdl_len = sizeof(sdl);
591 sdl.sdl_family = AF_LINK;
592 sdl.sdl_index = ifp->if_index;
593 sdl.sdl_type = IFT_ETHER;
594 sdl.sdl_alen = ETHER_ADDR_LEN;
595
596 bcopy(ðermulticastaddr_slowprotocols,
597 LLADDR(&sdl), ETHER_ADDR_LEN);
598 error = if_delmulti(ifp, (struct sockaddr *)&sdl);
599 if (error)
600 printf("%s: DELMULTI failed on %s\n", __func__, lgp->lp_ifname);
601
602 LIST_REMOVE(lp, lp_next);
603 free(lp, M_DEVBUF);
604 }
605
606 int
607 lacp_port_isactive(struct lagg_port *lgp)
608 {
609 struct lacp_port *lp = LACP_PORT(lgp);
610 struct lacp_softc *lsc = lp->lp_lsc;
611 struct lacp_aggregator *la = lp->lp_aggregator;
612
613 /* This port is joined to the active aggregator */
614 if (la != NULL && la == lsc->lsc_active_aggregator)
615 return (1);
616
617 return (0);
618 }
619
620 void
621 lacp_req(struct lagg_softc *sc, caddr_t data)
622 {
623 struct lacp_opreq *req = (struct lacp_opreq *)data;
624 struct lacp_softc *lsc = LACP_SOFTC(sc);
625 struct lacp_aggregator *la = lsc->lsc_active_aggregator;
626
627 bzero(req, sizeof(struct lacp_opreq));
628 if (la != NULL) {
629 req->actor_prio = ntohs(la->la_actor.lip_systemid.lsi_prio);
630 memcpy(&req->actor_mac, &la->la_actor.lip_systemid.lsi_mac,
631 ETHER_ADDR_LEN);
632 req->actor_key = ntohs(la->la_actor.lip_key);
633 req->actor_portprio = ntohs(la->la_actor.lip_portid.lpi_prio);
634 req->actor_portno = ntohs(la->la_actor.lip_portid.lpi_portno);
635 req->actor_state = la->la_actor.lip_state;
636
637 req->partner_prio = ntohs(la->la_partner.lip_systemid.lsi_prio);
638 memcpy(&req->partner_mac, &la->la_partner.lip_systemid.lsi_mac,
639 ETHER_ADDR_LEN);
640 req->partner_key = ntohs(la->la_partner.lip_key);
641 req->partner_portprio = ntohs(la->la_partner.lip_portid.lpi_prio);
642 req->partner_portno = ntohs(la->la_partner.lip_portid.lpi_portno);
643 req->partner_state = la->la_partner.lip_state;
644 }
645 }
646
647 void
648 lacp_portreq(struct lagg_port *lgp, caddr_t data)
649 {
650 struct lacp_opreq *req = (struct lacp_opreq *)data;
651 struct lacp_port *lp = LACP_PORT(lgp);
652
653 req->actor_prio = ntohs(lp->lp_actor.lip_systemid.lsi_prio);
654 memcpy(&req->actor_mac, &lp->lp_actor.lip_systemid.lsi_mac,
655 ETHER_ADDR_LEN);
656 req->actor_key = ntohs(lp->lp_actor.lip_key);
657 req->actor_portprio = ntohs(lp->lp_actor.lip_portid.lpi_prio);
658 req->actor_portno = ntohs(lp->lp_actor.lip_portid.lpi_portno);
659 req->actor_state = lp->lp_actor.lip_state;
660
661 req->partner_prio = ntohs(lp->lp_partner.lip_systemid.lsi_prio);
662 memcpy(&req->partner_mac, &lp->lp_partner.lip_systemid.lsi_mac,
663 ETHER_ADDR_LEN);
664 req->partner_key = ntohs(lp->lp_partner.lip_key);
665 req->partner_portprio = ntohs(lp->lp_partner.lip_portid.lpi_prio);
666 req->partner_portno = ntohs(lp->lp_partner.lip_portid.lpi_portno);
667 req->partner_state = lp->lp_partner.lip_state;
668 }
669
670 static void
671 lacp_disable_collecting(struct lacp_port *lp)
672 {
673 struct lagg_port *lgp = lp->lp_lagg;
674
675 LACP_DPRINTF((lp, "collecting disabled\n"));
676
677 lp->lp_state &= ~LACP_STATE_COLLECTING;
678 lgp->lp_flags &= ~LAGG_PORT_COLLECTING;
679 }
680
681 static void
682 lacp_enable_collecting(struct lacp_port *lp)
683 {
684 struct lagg_port *lgp = lp->lp_lagg;
685
686 LACP_DPRINTF((lp, "collecting enabled\n"));
687
688 lp->lp_state |= LACP_STATE_COLLECTING;
689 lgp->lp_flags |= LAGG_PORT_COLLECTING;
690 }
691
692 static void
693 lacp_disable_distributing(struct lacp_port *lp)
694 {
695 struct lacp_aggregator *la = lp->lp_aggregator;
696 struct lacp_softc *lsc = lp->lp_lsc;
697 struct lagg_port *lgp = lp->lp_lagg;
698 #if defined(LACP_DEBUG)
699 char buf[LACP_LAGIDSTR_MAX+1];
700 #endif /* defined(LACP_DEBUG) */
701
702 LAGG_WLOCK_ASSERT(lgp->lp_softc);
703
704 if (la == NULL || (lp->lp_state & LACP_STATE_DISTRIBUTING) == 0) {
705 return;
706 }
707
708 KASSERT(!TAILQ_EMPTY(&la->la_ports), ("no aggregator ports"));
709 KASSERT(la->la_nports > 0, ("nports invalid (%d)", la->la_nports));
710 KASSERT(la->la_refcnt >= la->la_nports, ("aggregator refcnt invalid"));
711
712 LACP_DPRINTF((lp, "disable distributing on aggregator %s, "
713 "nports %d -> %d\n",
714 lacp_format_lagid_aggregator(la, buf, sizeof(buf)),
715 la->la_nports, la->la_nports - 1));
716
717 TAILQ_REMOVE(&la->la_ports, lp, lp_dist_q);
718 la->la_nports--;
719
720 lacp_suppress_distributing(lsc, la);
721
722 lp->lp_state &= ~LACP_STATE_DISTRIBUTING;
723 lgp->lp_flags &= ~LAGG_PORT_DISTRIBUTING;
724
725 if (lsc->lsc_active_aggregator == la) {
726 lacp_select_active_aggregator(lsc);
727 }
728 }
729
730 static void
731 lacp_enable_distributing(struct lacp_port *lp)
732 {
733 struct lacp_aggregator *la = lp->lp_aggregator;
734 struct lacp_softc *lsc = lp->lp_lsc;
735 struct lagg_port *lgp = lp->lp_lagg;
736 #if defined(LACP_DEBUG)
737 char buf[LACP_LAGIDSTR_MAX+1];
738 #endif /* defined(LACP_DEBUG) */
739
740 LAGG_WLOCK_ASSERT(lgp->lp_softc);
741
742 if ((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0) {
743 return;
744 }
745
746 LACP_DPRINTF((lp, "enable distributing on aggregator %s, "
747 "nports %d -> %d\n",
748 lacp_format_lagid_aggregator(la, buf, sizeof(buf)),
749 la->la_nports, la->la_nports + 1));
750
751 KASSERT(la->la_refcnt > la->la_nports, ("aggregator refcnt invalid"));
752 TAILQ_INSERT_HEAD(&la->la_ports, lp, lp_dist_q);
753 la->la_nports++;
754
755 lacp_suppress_distributing(lsc, la);
756
757 lp->lp_state |= LACP_STATE_DISTRIBUTING;
758 lgp->lp_flags |= LAGG_PORT_DISTRIBUTING;
759
760 if (lsc->lsc_active_aggregator != la) {
761 lacp_select_active_aggregator(lsc);
762 }
763 }
764
765 static void
766 lacp_transit_expire(void *vp)
767 {
768 struct lacp_softc *lsc = vp;
769
770 LACP_DPRINTF((NULL, "%s\n", __func__));
771 lsc->lsc_suppress_distributing = FALSE;
772 }
773
774 int
775 lacp_attach(struct lagg_softc *sc)
776 {
777 struct lacp_softc *lsc;
778
779 LAGG_WLOCK_ASSERT(sc);
780
781 lsc = malloc(sizeof(struct lacp_softc),
782 M_DEVBUF, M_NOWAIT|M_ZERO);
783 if (lsc == NULL)
784 return (ENOMEM);
785
786 sc->sc_psc = (caddr_t)lsc;
787 lsc->lsc_softc = sc;
788
789 lsc->lsc_hashkey = arc4random();
790 lsc->lsc_active_aggregator = NULL;
791 TAILQ_INIT(&lsc->lsc_aggregators);
792 LIST_INIT(&lsc->lsc_ports);
793
794 TASK_INIT(&lsc->lsc_qtask, 0, lacp_dequeue, lsc);
795 mtx_init(&lsc->lsc_queue.ifq_mtx, "lacp queue", NULL, MTX_DEF);
796 lsc->lsc_queue.ifq_maxlen = ifqmaxlen;
797
798 callout_init(&lsc->lsc_transit_callout, CALLOUT_MPSAFE);
799 callout_init(&lsc->lsc_callout, CALLOUT_MPSAFE);
800
801 /* if the lagg is already up then do the same */
802 if (sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING)
803 lacp_init(sc);
804
805 return (0);
806 }
807
808 int
809 lacp_detach(struct lagg_softc *sc)
810 {
811 struct lacp_softc *lsc = LACP_SOFTC(sc);
812
813 KASSERT(TAILQ_EMPTY(&lsc->lsc_aggregators),
814 ("aggregators still active"));
815 KASSERT(lsc->lsc_active_aggregator == NULL,
816 ("aggregator still attached"));
817
818 sc->sc_psc = NULL;
819 callout_drain(&lsc->lsc_transit_callout);
820 callout_drain(&lsc->lsc_callout);
821 taskqueue_drain(taskqueue_swi, &lsc->lsc_qtask);
822 IF_DRAIN(&lsc->lsc_queue);
823 mtx_destroy(&lsc->lsc_queue.ifq_mtx);
824
825 free(lsc, M_DEVBUF);
826 return (0);
827 }
828
829 void
830 lacp_init(struct lagg_softc *sc)
831 {
832 struct lacp_softc *lsc = LACP_SOFTC(sc);
833
834 callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc);
835 }
836
837 void
838 lacp_stop(struct lagg_softc *sc)
839 {
840 struct lacp_softc *lsc = LACP_SOFTC(sc);
841
842 callout_stop(&lsc->lsc_transit_callout);
843 callout_stop(&lsc->lsc_callout);
844 }
845
846 struct lagg_port *
847 lacp_select_tx_port(struct lagg_softc *sc, struct mbuf *m)
848 {
849 struct lacp_softc *lsc = LACP_SOFTC(sc);
850 struct lacp_aggregator *la;
851 struct lacp_port *lp;
852 uint32_t hash;
853 int nports;
854
855 LAGG_RLOCK_ASSERT(sc);
856
857 if (__predict_false(lsc->lsc_suppress_distributing)) {
858 LACP_DPRINTF((NULL, "%s: waiting transit\n", __func__));
859 return (NULL);
860 }
861
862 la = lsc->lsc_active_aggregator;
863 if (__predict_false(la == NULL)) {
864 LACP_DPRINTF((NULL, "%s: no active aggregator\n", __func__));
865 return (NULL);
866 }
867
868 nports = la->la_nports;
869 KASSERT(nports > 0, ("no ports available"));
870
871 hash = lagg_hashmbuf(m, lsc->lsc_hashkey);
872 hash %= nports;
873 lp = TAILQ_FIRST(&la->la_ports);
874 while (hash--) {
875 lp = TAILQ_NEXT(lp, lp_dist_q);
876 }
877
878 KASSERT((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0,
879 ("aggregated port is not distributing"));
880
881 return (lp->lp_lagg);
882 }
883 /*
884 * lacp_suppress_distributing: drop transmit packets for a while
885 * to preserve packet ordering.
886 */
887
888 static void
889 lacp_suppress_distributing(struct lacp_softc *lsc, struct lacp_aggregator *la)
890 {
891 struct lacp_port *lp;
892
893 if (lsc->lsc_active_aggregator != la) {
894 return;
895 }
896
897 LACP_DPRINTF((NULL, "%s\n", __func__));
898 lsc->lsc_suppress_distributing = TRUE;
899
900 /* send a marker frame down each port to verify the queues are empty */
901 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) {
902 lp->lp_flags |= LACP_PORT_MARK;
903 lacp_xmit_marker(lp);
904 }
905
906 /* set a timeout for the marker frames */
907 callout_reset(&lsc->lsc_transit_callout,
908 LACP_TRANSIT_DELAY * hz / 1000, lacp_transit_expire, lsc);
909 }
910
911 static int
912 lacp_compare_peerinfo(const struct lacp_peerinfo *a,
913 const struct lacp_peerinfo *b)
914 {
915 return (memcmp(a, b, offsetof(struct lacp_peerinfo, lip_state)));
916 }
917
918 static int
919 lacp_compare_systemid(const struct lacp_systemid *a,
920 const struct lacp_systemid *b)
921 {
922 return (memcmp(a, b, sizeof(*a)));
923 }
924
925 #if 0 /* unused */
926 static int
927 lacp_compare_portid(const struct lacp_portid *a,
928 const struct lacp_portid *b)
929 {
930 return (memcmp(a, b, sizeof(*a)));
931 }
932 #endif
933
934 static uint64_t
935 lacp_aggregator_bandwidth(struct lacp_aggregator *la)
936 {
937 struct lacp_port *lp;
938 uint64_t speed;
939
940 lp = TAILQ_FIRST(&la->la_ports);
941 if (lp == NULL) {
942 return (0);
943 }
944
945 speed = ifmedia_baudrate(lp->lp_media);
946 speed *= la->la_nports;
947 if (speed == 0) {
948 LACP_DPRINTF((lp, "speed 0? media=0x%x nports=%d\n",
949 lp->lp_media, la->la_nports));
950 }
951
952 return (speed);
953 }
954
955 /*
956 * lacp_select_active_aggregator: select an aggregator to be used to transmit
957 * packets from lagg(4) interface.
958 */
959
960 static void
961 lacp_select_active_aggregator(struct lacp_softc *lsc)
962 {
963 struct lacp_aggregator *la;
964 struct lacp_aggregator *best_la = NULL;
965 uint64_t best_speed = 0;
966 #if defined(LACP_DEBUG)
967 char buf[LACP_LAGIDSTR_MAX+1];
968 #endif /* defined(LACP_DEBUG) */
969
970 LACP_DPRINTF((NULL, "%s:\n", __func__));
971
972 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) {
973 uint64_t speed;
974
975 if (la->la_nports == 0) {
976 continue;
977 }
978
979 speed = lacp_aggregator_bandwidth(la);
980 LACP_DPRINTF((NULL, "%s, speed=%jd, nports=%d\n",
981 lacp_format_lagid_aggregator(la, buf, sizeof(buf)),
982 speed, la->la_nports));
983
984 /* This aggregator is chosen if
985 * the partner has a better system priority
986 * or, the total aggregated speed is higher
987 * or, it is already the chosen aggregator
988 */
989 if ((best_la != NULL && LACP_SYS_PRI(la->la_partner) <
990 LACP_SYS_PRI(best_la->la_partner)) ||
991 speed > best_speed ||
992 (speed == best_speed &&
993 la == lsc->lsc_active_aggregator)) {
994 best_la = la;
995 best_speed = speed;
996 }
997 }
998
999 KASSERT(best_la == NULL || best_la->la_nports > 0,
1000 ("invalid aggregator refcnt"));
1001 KASSERT(best_la == NULL || !TAILQ_EMPTY(&best_la->la_ports),
1002 ("invalid aggregator list"));
1003
1004 #if defined(LACP_DEBUG)
1005 if (lsc->lsc_active_aggregator != best_la) {
1006 LACP_DPRINTF((NULL, "active aggregator changed\n"));
1007 LACP_DPRINTF((NULL, "old %s\n",
1008 lacp_format_lagid_aggregator(lsc->lsc_active_aggregator,
1009 buf, sizeof(buf))));
1010 } else {
1011 LACP_DPRINTF((NULL, "active aggregator not changed\n"));
1012 }
1013 LACP_DPRINTF((NULL, "new %s\n",
1014 lacp_format_lagid_aggregator(best_la, buf, sizeof(buf))));
1015 #endif /* defined(LACP_DEBUG) */
1016
1017 if (lsc->lsc_active_aggregator != best_la) {
1018 lsc->lsc_active_aggregator = best_la;
1019 if (best_la) {
1020 lacp_suppress_distributing(lsc, best_la);
1021 }
1022 }
1023 }
1024
1025 static uint16_t
1026 lacp_compose_key(struct lacp_port *lp)
1027 {
1028 struct lagg_port *lgp = lp->lp_lagg;
1029 struct lagg_softc *sc = lgp->lp_softc;
1030 u_int media = lp->lp_media;
1031 uint16_t key;
1032
1033 if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) {
1034
1035 /*
1036 * non-aggregatable links should have unique keys.
1037 *
1038 * XXX this isn't really unique as if_index is 16 bit.
1039 */
1040
1041 /* bit 0..14: (some bits of) if_index of this port */
1042 key = lp->lp_ifp->if_index;
1043 /* bit 15: 1 */
1044 key |= 0x8000;
1045 } else {
1046 u_int subtype = IFM_SUBTYPE(media);
1047
1048 KASSERT(IFM_TYPE(media) == IFM_ETHER, ("invalid media type"));
1049 KASSERT((media & IFM_FDX) != 0, ("aggregating HDX interface"));
1050
1051 /* bit 0..4: IFM_SUBTYPE */
1052 key = subtype;
1053 /* bit 5..14: (some bits of) if_index of lagg device */
1054 key |= 0x7fe0 & ((sc->sc_ifp->if_index) << 5);
1055 /* bit 15: 0 */
1056 }
1057 return (htons(key));
1058 }
1059
1060 static void
1061 lacp_aggregator_addref(struct lacp_softc *lsc, struct lacp_aggregator *la)
1062 {
1063 #if defined(LACP_DEBUG)
1064 char buf[LACP_LAGIDSTR_MAX+1];
1065 #endif
1066
1067 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n",
1068 __func__,
1069 lacp_format_lagid(&la->la_actor, &la->la_partner,
1070 buf, sizeof(buf)),
1071 la->la_refcnt, la->la_refcnt + 1));
1072
1073 KASSERT(la->la_refcnt > 0, ("refcount <= 0"));
1074 la->la_refcnt++;
1075 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcount"));
1076 }
1077
1078 static void
1079 lacp_aggregator_delref(struct lacp_softc *lsc, struct lacp_aggregator *la)
1080 {
1081 #if defined(LACP_DEBUG)
1082 char buf[LACP_LAGIDSTR_MAX+1];
1083 #endif
1084
1085 LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n",
1086 __func__,
1087 lacp_format_lagid(&la->la_actor, &la->la_partner,
1088 buf, sizeof(buf)),
1089 la->la_refcnt, la->la_refcnt - 1));
1090
1091 KASSERT(la->la_refcnt > la->la_nports, ("invalid refcnt"));
1092 la->la_refcnt--;
1093 if (la->la_refcnt > 0) {
1094 return;
1095 }
1096
1097 KASSERT(la->la_refcnt == 0, ("refcount not zero"));
1098 KASSERT(lsc->lsc_active_aggregator != la, ("aggregator active"));
1099
1100 TAILQ_REMOVE(&lsc->lsc_aggregators, la, la_q);
1101
1102 free(la, M_DEVBUF);
1103 }
1104
1105 /*
1106 * lacp_aggregator_get: allocate an aggregator.
1107 */
1108
1109 static struct lacp_aggregator *
1110 lacp_aggregator_get(struct lacp_softc *lsc, struct lacp_port *lp)
1111 {
1112 struct lacp_aggregator *la;
1113
1114 la = malloc(sizeof(*la), M_DEVBUF, M_NOWAIT);
1115 if (la) {
1116 la->la_refcnt = 1;
1117 la->la_nports = 0;
1118 TAILQ_INIT(&la->la_ports);
1119 la->la_pending = 0;
1120 TAILQ_INSERT_TAIL(&lsc->lsc_aggregators, la, la_q);
1121 }
1122
1123 return (la);
1124 }
1125
1126 /*
1127 * lacp_fill_aggregator_id: setup a newly allocated aggregator from a port.
1128 */
1129
1130 static void
1131 lacp_fill_aggregator_id(struct lacp_aggregator *la, const struct lacp_port *lp)
1132 {
1133 lacp_fill_aggregator_id_peer(&la->la_partner, &lp->lp_partner);
1134 lacp_fill_aggregator_id_peer(&la->la_actor, &lp->lp_actor);
1135
1136 la->la_actor.lip_state = lp->lp_state & LACP_STATE_AGGREGATION;
1137 }
1138
1139 static void
1140 lacp_fill_aggregator_id_peer(struct lacp_peerinfo *lpi_aggr,
1141 const struct lacp_peerinfo *lpi_port)
1142 {
1143 memset(lpi_aggr, 0, sizeof(*lpi_aggr));
1144 lpi_aggr->lip_systemid = lpi_port->lip_systemid;
1145 lpi_aggr->lip_key = lpi_port->lip_key;
1146 }
1147
1148 /*
1149 * lacp_aggregator_is_compatible: check if a port can join to an aggregator.
1150 */
1151
1152 static int
1153 lacp_aggregator_is_compatible(const struct lacp_aggregator *la,
1154 const struct lacp_port *lp)
1155 {
1156 if (!(lp->lp_state & LACP_STATE_AGGREGATION) ||
1157 !(lp->lp_partner.lip_state & LACP_STATE_AGGREGATION)) {
1158 return (0);
1159 }
1160
1161 if (!(la->la_actor.lip_state & LACP_STATE_AGGREGATION)) {
1162 return (0);
1163 }
1164
1165 if (!lacp_peerinfo_is_compatible(&la->la_partner, &lp->lp_partner)) {
1166 return (0);
1167 }
1168
1169 if (!lacp_peerinfo_is_compatible(&la->la_actor, &lp->lp_actor)) {
1170 return (0);
1171 }
1172
1173 return (1);
1174 }
1175
1176 static int
1177 lacp_peerinfo_is_compatible(const struct lacp_peerinfo *a,
1178 const struct lacp_peerinfo *b)
1179 {
1180 if (memcmp(&a->lip_systemid, &b->lip_systemid,
1181 sizeof(a->lip_systemid))) {
1182 return (0);
1183 }
1184
1185 if (memcmp(&a->lip_key, &b->lip_key, sizeof(a->lip_key))) {
1186 return (0);
1187 }
1188
1189 return (1);
1190 }
1191
1192 static void
1193 lacp_port_enable(struct lacp_port *lp)
1194 {
1195 struct lagg_port *lgp = lp->lp_lagg;
1196
1197 lp->lp_state |= LACP_STATE_AGGREGATION;
1198 lgp->lp_flags &= ~LAGG_PORT_DISABLED;
1199 }
1200
1201 static void
1202 lacp_port_disable(struct lacp_port *lp)
1203 {
1204 struct lagg_port *lgp = lp->lp_lagg;
1205
1206 lacp_set_mux(lp, LACP_MUX_DETACHED);
1207
1208 lp->lp_state &= ~LACP_STATE_AGGREGATION;
1209 lp->lp_selected = LACP_UNSELECTED;
1210 lacp_sm_rx_record_default(lp);
1211 lp->lp_partner.lip_state &= ~LACP_STATE_AGGREGATION;
1212 lp->lp_state &= ~LACP_STATE_EXPIRED;
1213 lgp->lp_flags |= LAGG_PORT_DISABLED;
1214 }
1215
1216 /*
1217 * lacp_select: select an aggregator. create one if necessary.
1218 */
1219 static void
1220 lacp_select(struct lacp_port *lp)
1221 {
1222 struct lacp_softc *lsc = lp->lp_lsc;
1223 struct lacp_aggregator *la;
1224 #if defined(LACP_DEBUG)
1225 char buf[LACP_LAGIDSTR_MAX+1];
1226 #endif
1227
1228 if (lp->lp_aggregator) {
1229 return;
1230 }
1231
1232 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE),
1233 ("timer_wait_while still active"));
1234
1235 LACP_DPRINTF((lp, "port lagid=%s\n",
1236 lacp_format_lagid(&lp->lp_actor, &lp->lp_partner,
1237 buf, sizeof(buf))));
1238
1239 TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) {
1240 if (lacp_aggregator_is_compatible(la, lp)) {
1241 break;
1242 }
1243 }
1244
1245 if (la == NULL) {
1246 la = lacp_aggregator_get(lsc, lp);
1247 if (la == NULL) {
1248 LACP_DPRINTF((lp, "aggregator creation failed\n"));
1249
1250 /*
1251 * will retry on the next tick.
1252 */
1253
1254 return;
1255 }
1256 lacp_fill_aggregator_id(la, lp);
1257 LACP_DPRINTF((lp, "aggregator created\n"));
1258 } else {
1259 LACP_DPRINTF((lp, "compatible aggregator found\n"));
1260 lacp_aggregator_addref(lsc, la);
1261 }
1262
1263 LACP_DPRINTF((lp, "aggregator lagid=%s\n",
1264 lacp_format_lagid(&la->la_actor, &la->la_partner,
1265 buf, sizeof(buf))));
1266
1267 lp->lp_aggregator = la;
1268 lp->lp_selected = LACP_SELECTED;
1269 }
1270
1271 /*
1272 * lacp_unselect: finish unselect/detach process.
1273 */
1274
1275 static void
1276 lacp_unselect(struct lacp_port *lp)
1277 {
1278 struct lacp_softc *lsc = lp->lp_lsc;
1279 struct lacp_aggregator *la = lp->lp_aggregator;
1280
1281 KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE),
1282 ("timer_wait_while still active"));
1283
1284 if (la == NULL) {
1285 return;
1286 }
1287
1288 lp->lp_aggregator = NULL;
1289 lacp_aggregator_delref(lsc, la);
1290 }
1291
1292 /* mux machine */
1293
1294 static void
1295 lacp_sm_mux(struct lacp_port *lp)
1296 {
1297 enum lacp_mux_state new_state;
1298 boolean_t p_sync =
1299 (lp->lp_partner.lip_state & LACP_STATE_SYNC) != 0;
1300 boolean_t p_collecting =
1301 (lp->lp_partner.lip_state & LACP_STATE_COLLECTING) != 0;
1302 enum lacp_selected selected = lp->lp_selected;
1303 struct lacp_aggregator *la;
1304
1305 /* LACP_DPRINTF((lp, "%s: state %d\n", __func__, lp->lp_mux_state)); */
1306
1307 re_eval:
1308 la = lp->lp_aggregator;
1309 KASSERT(lp->lp_mux_state == LACP_MUX_DETACHED || la != NULL,
1310 ("MUX not detached"));
1311 new_state = lp->lp_mux_state;
1312 switch (lp->lp_mux_state) {
1313 case LACP_MUX_DETACHED:
1314 if (selected != LACP_UNSELECTED) {
1315 new_state = LACP_MUX_WAITING;
1316 }
1317 break;
1318 case LACP_MUX_WAITING:
1319 KASSERT(la->la_pending > 0 ||
1320 !LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE),
1321 ("timer_wait_while still active"));
1322 if (selected == LACP_SELECTED && la->la_pending == 0) {
1323 new_state = LACP_MUX_ATTACHED;
1324 } else if (selected == LACP_UNSELECTED) {
1325 new_state = LACP_MUX_DETACHED;
1326 }
1327 break;
1328 case LACP_MUX_ATTACHED:
1329 if (selected == LACP_SELECTED && p_sync) {
1330 new_state = LACP_MUX_COLLECTING;
1331 } else if (selected != LACP_SELECTED) {
1332 new_state = LACP_MUX_DETACHED;
1333 }
1334 break;
1335 case LACP_MUX_COLLECTING:
1336 if (selected == LACP_SELECTED && p_sync && p_collecting) {
1337 new_state = LACP_MUX_DISTRIBUTING;
1338 } else if (selected != LACP_SELECTED || !p_sync) {
1339 new_state = LACP_MUX_ATTACHED;
1340 }
1341 break;
1342 case LACP_MUX_DISTRIBUTING:
1343 if (selected != LACP_SELECTED || !p_sync || !p_collecting) {
1344 new_state = LACP_MUX_COLLECTING;
1345 }
1346 break;
1347 default:
1348 panic("%s: unknown state", __func__);
1349 }
1350
1351 if (lp->lp_mux_state == new_state) {
1352 return;
1353 }
1354
1355 lacp_set_mux(lp, new_state);
1356 goto re_eval;
1357 }
1358
1359 static void
1360 lacp_set_mux(struct lacp_port *lp, enum lacp_mux_state new_state)
1361 {
1362 struct lacp_aggregator *la = lp->lp_aggregator;
1363
1364 if (lp->lp_mux_state == new_state) {
1365 return;
1366 }
1367
1368 switch (new_state) {
1369 case LACP_MUX_DETACHED:
1370 lp->lp_state &= ~LACP_STATE_SYNC;
1371 lacp_disable_distributing(lp);
1372 lacp_disable_collecting(lp);
1373 lacp_sm_assert_ntt(lp);
1374 /* cancel timer */
1375 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE)) {
1376 KASSERT(la->la_pending > 0,
1377 ("timer_wait_while not active"));
1378 la->la_pending--;
1379 }
1380 LACP_TIMER_DISARM(lp, LACP_TIMER_WAIT_WHILE);
1381 lacp_unselect(lp);
1382 break;
1383 case LACP_MUX_WAITING:
1384 LACP_TIMER_ARM(lp, LACP_TIMER_WAIT_WHILE,
1385 LACP_AGGREGATE_WAIT_TIME);
1386 la->la_pending++;
1387 break;
1388 case LACP_MUX_ATTACHED:
1389 lp->lp_state |= LACP_STATE_SYNC;
1390 lacp_disable_collecting(lp);
1391 lacp_sm_assert_ntt(lp);
1392 break;
1393 case LACP_MUX_COLLECTING:
1394 lacp_enable_collecting(lp);
1395 lacp_disable_distributing(lp);
1396 lacp_sm_assert_ntt(lp);
1397 break;
1398 case LACP_MUX_DISTRIBUTING:
1399 lacp_enable_distributing(lp);
1400 break;
1401 default:
1402 panic("%s: unknown state", __func__);
1403 }
1404
1405 LACP_DPRINTF((lp, "mux_state %d -> %d\n", lp->lp_mux_state, new_state));
1406
1407 lp->lp_mux_state = new_state;
1408 }
1409
1410 static void
1411 lacp_sm_mux_timer(struct lacp_port *lp)
1412 {
1413 struct lacp_aggregator *la = lp->lp_aggregator;
1414 #if defined(LACP_DEBUG)
1415 char buf[LACP_LAGIDSTR_MAX+1];
1416 #endif
1417
1418 KASSERT(la->la_pending > 0, ("no pending event"));
1419
1420 LACP_DPRINTF((lp, "%s: aggregator %s, pending %d -> %d\n", __func__,
1421 lacp_format_lagid(&la->la_actor, &la->la_partner,
1422 buf, sizeof(buf)),
1423 la->la_pending, la->la_pending - 1));
1424
1425 la->la_pending--;
1426 }
1427
1428 /* periodic transmit machine */
1429
1430 static void
1431 lacp_sm_ptx_update_timeout(struct lacp_port *lp, uint8_t oldpstate)
1432 {
1433 if (LACP_STATE_EQ(oldpstate, lp->lp_partner.lip_state,
1434 LACP_STATE_TIMEOUT)) {
1435 return;
1436 }
1437
1438 LACP_DPRINTF((lp, "partner timeout changed\n"));
1439
1440 /*
1441 * FAST_PERIODIC -> SLOW_PERIODIC
1442 * or
1443 * SLOW_PERIODIC (-> PERIODIC_TX) -> FAST_PERIODIC
1444 *
1445 * let lacp_sm_ptx_tx_schedule to update timeout.
1446 */
1447
1448 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC);
1449
1450 /*
1451 * if timeout has been shortened, assert NTT.
1452 */
1453
1454 if ((lp->lp_partner.lip_state & LACP_STATE_TIMEOUT)) {
1455 lacp_sm_assert_ntt(lp);
1456 }
1457 }
1458
1459 static void
1460 lacp_sm_ptx_tx_schedule(struct lacp_port *lp)
1461 {
1462 int timeout;
1463
1464 if (!(lp->lp_state & LACP_STATE_ACTIVITY) &&
1465 !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) {
1466
1467 /*
1468 * NO_PERIODIC
1469 */
1470
1471 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC);
1472 return;
1473 }
1474
1475 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_PERIODIC)) {
1476 return;
1477 }
1478
1479 timeout = (lp->lp_partner.lip_state & LACP_STATE_TIMEOUT) ?
1480 LACP_FAST_PERIODIC_TIME : LACP_SLOW_PERIODIC_TIME;
1481
1482 LACP_TIMER_ARM(lp, LACP_TIMER_PERIODIC, timeout);
1483 }
1484
1485 static void
1486 lacp_sm_ptx_timer(struct lacp_port *lp)
1487 {
1488 lacp_sm_assert_ntt(lp);
1489 }
1490
1491 static void
1492 lacp_sm_rx(struct lacp_port *lp, const struct lacpdu *du)
1493 {
1494 int timeout;
1495
1496 /*
1497 * check LACP_DISABLED first
1498 */
1499
1500 if (!(lp->lp_state & LACP_STATE_AGGREGATION)) {
1501 return;
1502 }
1503
1504 /*
1505 * check loopback condition.
1506 */
1507
1508 if (!lacp_compare_systemid(&du->ldu_actor.lip_systemid,
1509 &lp->lp_actor.lip_systemid)) {
1510 return;
1511 }
1512
1513 /*
1514 * EXPIRED, DEFAULTED, CURRENT -> CURRENT
1515 */
1516
1517 lacp_sm_rx_update_selected(lp, du);
1518 lacp_sm_rx_update_ntt(lp, du);
1519 lacp_sm_rx_record_pdu(lp, du);
1520
1521 timeout = (lp->lp_state & LACP_STATE_TIMEOUT) ?
1522 LACP_SHORT_TIMEOUT_TIME : LACP_LONG_TIMEOUT_TIME;
1523 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, timeout);
1524
1525 lp->lp_state &= ~LACP_STATE_EXPIRED;
1526
1527 /*
1528 * kick transmit machine without waiting the next tick.
1529 */
1530
1531 lacp_sm_tx(lp);
1532 }
1533
1534 static void
1535 lacp_sm_rx_set_expired(struct lacp_port *lp)
1536 {
1537 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC;
1538 lp->lp_partner.lip_state |= LACP_STATE_TIMEOUT;
1539 LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, LACP_SHORT_TIMEOUT_TIME);
1540 lp->lp_state |= LACP_STATE_EXPIRED;
1541 }
1542
1543 static void
1544 lacp_sm_rx_timer(struct lacp_port *lp)
1545 {
1546 if ((lp->lp_state & LACP_STATE_EXPIRED) == 0) {
1547 /* CURRENT -> EXPIRED */
1548 LACP_DPRINTF((lp, "%s: CURRENT -> EXPIRED\n", __func__));
1549 lacp_sm_rx_set_expired(lp);
1550 } else {
1551 /* EXPIRED -> DEFAULTED */
1552 LACP_DPRINTF((lp, "%s: EXPIRED -> DEFAULTED\n", __func__));
1553 lacp_sm_rx_update_default_selected(lp);
1554 lacp_sm_rx_record_default(lp);
1555 lp->lp_state &= ~LACP_STATE_EXPIRED;
1556 }
1557 }
1558
1559 static void
1560 lacp_sm_rx_record_pdu(struct lacp_port *lp, const struct lacpdu *du)
1561 {
1562 boolean_t active;
1563 uint8_t oldpstate;
1564 #if defined(LACP_DEBUG)
1565 char buf[LACP_STATESTR_MAX+1];
1566 #endif
1567
1568 /* LACP_DPRINTF((lp, "%s\n", __func__)); */
1569
1570 oldpstate = lp->lp_partner.lip_state;
1571
1572 active = (du->ldu_actor.lip_state & LACP_STATE_ACTIVITY)
1573 || ((lp->lp_state & LACP_STATE_ACTIVITY) &&
1574 (du->ldu_partner.lip_state & LACP_STATE_ACTIVITY));
1575
1576 lp->lp_partner = du->ldu_actor;
1577 if (active &&
1578 ((LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state,
1579 LACP_STATE_AGGREGATION) &&
1580 !lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner))
1581 || (du->ldu_partner.lip_state & LACP_STATE_AGGREGATION) == 0)) {
1582 /* XXX nothing? */
1583 } else {
1584 lp->lp_partner.lip_state &= ~LACP_STATE_SYNC;
1585 }
1586
1587 lp->lp_state &= ~LACP_STATE_DEFAULTED;
1588
1589 if (oldpstate != lp->lp_partner.lip_state) {
1590 LACP_DPRINTF((lp, "old pstate %s\n",
1591 lacp_format_state(oldpstate, buf, sizeof(buf))));
1592 LACP_DPRINTF((lp, "new pstate %s\n",
1593 lacp_format_state(lp->lp_partner.lip_state, buf,
1594 sizeof(buf))));
1595 }
1596
1597 lacp_sm_ptx_update_timeout(lp, oldpstate);
1598 }
1599
1600 static void
1601 lacp_sm_rx_update_ntt(struct lacp_port *lp, const struct lacpdu *du)
1602 {
1603 /* LACP_DPRINTF((lp, "%s\n", __func__)); */
1604
1605 if (lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner) ||
1606 !LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state,
1607 LACP_STATE_ACTIVITY | LACP_STATE_SYNC | LACP_STATE_AGGREGATION)) {
1608 LACP_DPRINTF((lp, "%s: assert ntt\n", __func__));
1609 lacp_sm_assert_ntt(lp);
1610 }
1611 }
1612
1613 static void
1614 lacp_sm_rx_record_default(struct lacp_port *lp)
1615 {
1616 uint8_t oldpstate;
1617
1618 /* LACP_DPRINTF((lp, "%s\n", __func__)); */
1619
1620 oldpstate = lp->lp_partner.lip_state;
1621 lp->lp_partner = lacp_partner_admin;
1622 lp->lp_state |= LACP_STATE_DEFAULTED;
1623 lacp_sm_ptx_update_timeout(lp, oldpstate);
1624 }
1625
1626 static void
1627 lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *lp,
1628 const struct lacp_peerinfo *info)
1629 {
1630 /* LACP_DPRINTF((lp, "%s\n", __func__)); */
1631
1632 if (lacp_compare_peerinfo(&lp->lp_partner, info) ||
1633 !LACP_STATE_EQ(lp->lp_partner.lip_state, info->lip_state,
1634 LACP_STATE_AGGREGATION)) {
1635 lp->lp_selected = LACP_UNSELECTED;
1636 /* mux machine will clean up lp->lp_aggregator */
1637 }
1638 }
1639
1640 static void
1641 lacp_sm_rx_update_selected(struct lacp_port *lp, const struct lacpdu *du)
1642 {
1643 /* LACP_DPRINTF((lp, "%s\n", __func__)); */
1644
1645 lacp_sm_rx_update_selected_from_peerinfo(lp, &du->ldu_actor);
1646 }
1647
1648 static void
1649 lacp_sm_rx_update_default_selected(struct lacp_port *lp)
1650 {
1651 /* LACP_DPRINTF((lp, "%s\n", __func__)); */
1652
1653 lacp_sm_rx_update_selected_from_peerinfo(lp, &lacp_partner_admin);
1654 }
1655
1656 /* transmit machine */
1657
1658 static void
1659 lacp_sm_tx(struct lacp_port *lp)
1660 {
1661 int error;
1662
1663 if (!(lp->lp_state & LACP_STATE_AGGREGATION)
1664 #if 1
1665 || (!(lp->lp_state & LACP_STATE_ACTIVITY)
1666 && !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY))
1667 #endif
1668 ) {
1669 lp->lp_flags &= ~LACP_PORT_NTT;
1670 }
1671
1672 if (!(lp->lp_flags & LACP_PORT_NTT)) {
1673 return;
1674 }
1675
1676 /* Rate limit to 3 PDUs per LACP_FAST_PERIODIC_TIME */
1677 if (ppsratecheck(&lp->lp_last_lacpdu, &lp->lp_lacpdu_sent,
1678 (3 / LACP_FAST_PERIODIC_TIME)) == 0) {
1679 LACP_DPRINTF((lp, "rate limited pdu\n"));
1680 return;
1681 }
1682
1683 error = lacp_xmit_lacpdu(lp);
1684
1685 if (error == 0) {
1686 lp->lp_flags &= ~LACP_PORT_NTT;
1687 } else {
1688 LACP_DPRINTF((lp, "lacpdu transmit failure, error %d\n",
1689 error));
1690 }
1691 }
1692
1693 static void
1694 lacp_sm_assert_ntt(struct lacp_port *lp)
1695 {
1696
1697 lp->lp_flags |= LACP_PORT_NTT;
1698 }
1699
1700 static void
1701 lacp_run_timers(struct lacp_port *lp)
1702 {
1703 int i;
1704
1705 for (i = 0; i < LACP_NTIMER; i++) {
1706 KASSERT(lp->lp_timer[i] >= 0,
1707 ("invalid timer value %d", lp->lp_timer[i]));
1708 if (lp->lp_timer[i] == 0) {
1709 continue;
1710 } else if (--lp->lp_timer[i] <= 0) {
1711 if (lacp_timer_funcs[i]) {
1712 (*lacp_timer_funcs[i])(lp);
1713 }
1714 }
1715 }
1716 }
1717
1718 int
1719 lacp_marker_input(struct lagg_port *lgp, struct mbuf *m)
1720 {
1721 struct lacp_port *lp = LACP_PORT(lgp);
1722 struct lacp_port *lp2;
1723 struct lacp_softc *lsc = lp->lp_lsc;
1724 struct markerdu *mdu;
1725 int error = 0;
1726 int pending = 0;
1727
1728 LAGG_RLOCK_ASSERT(lgp->lp_softc);
1729
1730 if (m->m_pkthdr.len != sizeof(*mdu)) {
1731 goto bad;
1732 }
1733
1734 if (m->m_len < sizeof(*mdu)) {
1735 m = m_pullup(m, sizeof(*mdu));
1736 if (m == NULL) {
1737 return (ENOMEM);
1738 }
1739 }
1740
1741 mdu = mtod(m, struct markerdu *);
1742
1743 if (memcmp(&mdu->mdu_eh.ether_dhost,
1744 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) {
1745 goto bad;
1746 }
1747
1748 if (mdu->mdu_sph.sph_version != 1) {
1749 goto bad;
1750 }
1751
1752 switch (mdu->mdu_tlv.tlv_type) {
1753 case MARKER_TYPE_INFO:
1754 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv,
1755 marker_info_tlv_template, TRUE)) {
1756 goto bad;
1757 }
1758 mdu->mdu_tlv.tlv_type = MARKER_TYPE_RESPONSE;
1759 memcpy(&mdu->mdu_eh.ether_dhost,
1760 ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN);
1761 memcpy(&mdu->mdu_eh.ether_shost,
1762 lgp->lp_lladdr, ETHER_ADDR_LEN);
1763 error = lagg_enqueue(lp->lp_ifp, m);
1764 break;
1765
1766 case MARKER_TYPE_RESPONSE:
1767 if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv,
1768 marker_response_tlv_template, TRUE)) {
1769 goto bad;
1770 }
1771 LACP_DPRINTF((lp, "marker response, port=%u, sys=%6D, id=%u\n",
1772 ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system,
1773 ":", ntohl(mdu->mdu_info.mi_rq_xid)));
1774
1775 /* Verify that it is the last marker we sent out */
1776 if (memcmp(&mdu->mdu_info, &lp->lp_marker,
1777 sizeof(struct lacp_markerinfo)))
1778 goto bad;
1779
1780 lp->lp_flags &= ~LACP_PORT_MARK;
1781
1782 if (lsc->lsc_suppress_distributing) {
1783 /* Check if any ports are waiting for a response */
1784 LIST_FOREACH(lp2, &lsc->lsc_ports, lp_next) {
1785 if (lp2->lp_flags & LACP_PORT_MARK) {
1786 pending = 1;
1787 break;
1788 }
1789 }
1790
1791 if (pending == 0) {
1792 /* All interface queues are clear */
1793 LACP_DPRINTF((NULL, "queue flush complete\n"));
1794 lsc->lsc_suppress_distributing = FALSE;
1795 }
1796 }
1797
1798 m_freem(m);
1799 break;
1800
1801 default:
1802 goto bad;
1803 }
1804
1805 return (error);
1806
1807 bad:
1808 LACP_DPRINTF((lp, "bad marker frame\n"));
1809 m_freem(m);
1810 return (EINVAL);
1811 }
1812
1813 static int
1814 tlv_check(const void *p, size_t size, const struct tlvhdr *tlv,
1815 const struct tlv_template *tmpl, boolean_t check_type)
1816 {
1817 while (/* CONSTCOND */ 1) {
1818 if ((const char *)tlv - (const char *)p + sizeof(*tlv) > size) {
1819 return (EINVAL);
1820 }
1821 if ((check_type && tlv->tlv_type != tmpl->tmpl_type) ||
1822 tlv->tlv_length != tmpl->tmpl_length) {
1823 return (EINVAL);
1824 }
1825 if (tmpl->tmpl_type == 0) {
1826 break;
1827 }
1828 tlv = (const struct tlvhdr *)
1829 ((const char *)tlv + tlv->tlv_length);
1830 tmpl++;
1831 }
1832
1833 return (0);
1834 }
1835
1836 #if defined(LACP_DEBUG)
1837 const char *
1838 lacp_format_mac(const uint8_t *mac, char *buf, size_t buflen)
1839 {
1840 snprintf(buf, buflen, "%02X-%02X-%02X-%02X-%02X-%02X",
1841 (int)mac[0],
1842 (int)mac[1],
1843 (int)mac[2],
1844 (int)mac[3],
1845 (int)mac[4],
1846 (int)mac[5]);
1847
1848 return (buf);
1849 }
1850
1851 const char *
1852 lacp_format_systemid(const struct lacp_systemid *sysid,
1853 char *buf, size_t buflen)
1854 {
1855 char macbuf[LACP_MACSTR_MAX+1];
1856
1857 snprintf(buf, buflen, "%04X,%s",
1858 ntohs(sysid->lsi_prio),
1859 lacp_format_mac(sysid->lsi_mac, macbuf, sizeof(macbuf)));
1860
1861 return (buf);
1862 }
1863
1864 const char *
1865 lacp_format_portid(const struct lacp_portid *portid, char *buf, size_t buflen)
1866 {
1867 snprintf(buf, buflen, "%04X,%04X",
1868 ntohs(portid->lpi_prio),
1869 ntohs(portid->lpi_portno));
1870
1871 return (buf);
1872 }
1873
1874 const char *
1875 lacp_format_partner(const struct lacp_peerinfo *peer, char *buf, size_t buflen)
1876 {
1877 char sysid[LACP_SYSTEMIDSTR_MAX+1];
1878 char portid[LACP_PORTIDSTR_MAX+1];
1879
1880 snprintf(buf, buflen, "(%s,%04X,%s)",
1881 lacp_format_systemid(&peer->lip_systemid, sysid, sizeof(sysid)),
1882 ntohs(peer->lip_key),
1883 lacp_format_portid(&peer->lip_portid, portid, sizeof(portid)));
1884
1885 return (buf);
1886 }
1887
1888 const char *
1889 lacp_format_lagid(const struct lacp_peerinfo *a,
1890 const struct lacp_peerinfo *b, char *buf, size_t buflen)
1891 {
1892 char astr[LACP_PARTNERSTR_MAX+1];
1893 char bstr[LACP_PARTNERSTR_MAX+1];
1894
1895 #if 0
1896 /*
1897 * there's a convention to display small numbered peer
1898 * in the left.
1899 */
1900
1901 if (lacp_compare_peerinfo(a, b) > 0) {
1902 const struct lacp_peerinfo *t;
1903
1904 t = a;
1905 a = b;
1906 b = t;
1907 }
1908 #endif
1909
1910 snprintf(buf, buflen, "[%s,%s]",
1911 lacp_format_partner(a, astr, sizeof(astr)),
1912 lacp_format_partner(b, bstr, sizeof(bstr)));
1913
1914 return (buf);
1915 }
1916
1917 const char *
1918 lacp_format_lagid_aggregator(const struct lacp_aggregator *la,
1919 char *buf, size_t buflen)
1920 {
1921 if (la == NULL) {
1922 return ("(none)");
1923 }
1924
1925 return (lacp_format_lagid(&la->la_actor, &la->la_partner, buf, buflen));
1926 }
1927
1928 const char *
1929 lacp_format_state(uint8_t state, char *buf, size_t buflen)
1930 {
1931 snprintf(buf, buflen, "%b", state, LACP_STATE_BITS);
1932 return (buf);
1933 }
1934
1935 static void
1936 lacp_dump_lacpdu(const struct lacpdu *du)
1937 {
1938 char buf[LACP_PARTNERSTR_MAX+1];
1939 char buf2[LACP_STATESTR_MAX+1];
1940
1941 printf("actor=%s\n",
1942 lacp_format_partner(&du->ldu_actor, buf, sizeof(buf)));
1943 printf("actor.state=%s\n",
1944 lacp_format_state(du->ldu_actor.lip_state, buf2, sizeof(buf2)));
1945 printf("partner=%s\n",
1946 lacp_format_partner(&du->ldu_partner, buf, sizeof(buf)));
1947 printf("partner.state=%s\n",
1948 lacp_format_state(du->ldu_partner.lip_state, buf2, sizeof(buf2)));
1949
1950 printf("maxdelay=%d\n", ntohs(du->ldu_collector.lci_maxdelay));
1951 }
1952
1953 static void
1954 lacp_dprintf(const struct lacp_port *lp, const char *fmt, ...)
1955 {
1956 va_list va;
1957
1958 if (lp) {
1959 printf("%s: ", lp->lp_ifp->if_xname);
1960 }
1961
1962 va_start(va, fmt);
1963 vprintf(fmt, va);
1964 va_end(va);
1965 }
1966 #endif
Cache object: bfd81c6ab954cf50b9980f55c61c5a67
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