1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 * Copyright 2012 OmniTI Computer Consulting, Inc All rights reserved.
25 * Copyright 2018 Joyent, Inc.
26 */
27
28 /*
29 * IEEE 802.3ad Link Aggregation - Link Aggregation MAC ports.
30 *
31 * Implements the functions needed to manage the MAC ports that are
32 * part of Link Aggregation groups.
33 */
34
35 #include <sys/types.h>
36 #include <sys/sysmacros.h>
37 #include <sys/conf.h>
38 #include <sys/cmn_err.h>
39 #include <sys/id_space.h>
40 #include <sys/list.h>
41 #include <sys/ksynch.h>
42 #include <sys/kmem.h>
43 #include <sys/stream.h>
44 #include <sys/modctl.h>
45 #include <sys/ddi.h>
46 #include <sys/sunddi.h>
47 #include <sys/atomic.h>
48 #include <sys/stat.h>
49 #include <sys/sdt.h>
50 #include <sys/dlpi.h>
51 #include <sys/dls.h>
52 #include <sys/aggr.h>
53 #include <sys/aggr_impl.h>
54
55 static kmem_cache_t *aggr_port_cache;
56 static id_space_t *aggr_portids;
57
58 static void aggr_port_notify_cb(void *, mac_notify_type_t);
59
60 /*ARGSUSED*/
61 static int
62 aggr_port_constructor(void *buf, void *arg, int kmflag)
63 {
64 bzero(buf, sizeof (aggr_port_t));
65 return (0);
66 }
67
68 /*ARGSUSED*/
69 static void
70 aggr_port_destructor(void *buf, void *arg)
71 {
72 aggr_port_t *port = buf;
73
74 ASSERT(port->lp_mnh == NULL);
75 ASSERT(port->lp_mphp == NULL);
76 ASSERT(!port->lp_rx_grp_added && !port->lp_tx_grp_added);
77 ASSERT(port->lp_hwgh == NULL);
78 }
79
80 void
81 aggr_port_init(void)
82 {
83 aggr_port_cache = kmem_cache_create("aggr_port_cache",
84 sizeof (aggr_port_t), 0, aggr_port_constructor,
85 aggr_port_destructor, NULL, NULL, NULL, 0);
86
87 /*
88 * Allocate a id space to manage port identification. The range of
89 * the arena will be from 1 to UINT16_MAX, because the LACP protocol
90 * specifies 16-bit unique identification.
91 */
92 aggr_portids = id_space_create("aggr_portids", 1, UINT16_MAX);
93 ASSERT(aggr_portids != NULL);
94 }
95
96 void
97 aggr_port_fini(void)
98 {
99 /*
100 * This function is called only after all groups have been
101 * freed. This ensures that there are no remaining allocated
102 * ports when this function is invoked.
103 */
104 kmem_cache_destroy(aggr_port_cache);
105 id_space_destroy(aggr_portids);
106 }
107
108 /* ARGSUSED */
109 void
110 aggr_port_init_callbacks(aggr_port_t *port)
111 {
112 /* add the port's receive callback */
113 port->lp_mnh = mac_notify_add(port->lp_mh, aggr_port_notify_cb, port);
114 /*
115 * Hold a reference of the grp and the port and this reference will
116 * be released when the thread exits.
117 *
118 * The reference on the port is used for aggr_port_delete() to
119 * continue without waiting for the thread to exit; the reference
120 * on the grp is used for aggr_grp_delete() to wait for the thread
121 * to exit before calling mac_unregister().
122 *
123 * Note that these references will be released either in
124 * aggr_port_delete() when mac_notify_remove() succeeds, or in
125 * the aggr_port_notify_cb() callback when the port is deleted
126 * (lp_closing is set).
127 */
128 aggr_grp_port_hold(port);
129 }
130
131 /* ARGSUSED */
132 int
133 aggr_port_create(aggr_grp_t *grp, const datalink_id_t linkid, boolean_t force,
134 aggr_port_t **pp)
135 {
136 int err;
137 mac_handle_t mh;
138 mac_client_handle_t mch = NULL;
139 aggr_port_t *port;
140 uint16_t portid;
141 uint_t i;
142 boolean_t no_link_update = B_FALSE;
143 const mac_info_t *mip;
144 uint32_t note;
145 uint32_t margin;
146 char client_name[MAXNAMELEN];
147 char aggr_name[MAXNAMELEN];
148 char port_name[MAXNAMELEN];
149 mac_diag_t diag;
150 mac_unicast_handle_t mah;
151
152 *pp = NULL;
153
154 if ((err = mac_open_by_linkid(linkid, &mh)) != 0)
155 return (err);
156
157 mip = mac_info(mh);
158 if (mip->mi_media != DL_ETHER || mip->mi_nativemedia != DL_ETHER) {
159 err = EINVAL;
160 goto fail;
161 }
162
163 /*
164 * If the underlying MAC does not support link update notification, it
165 * can only be aggregated if `force' is set. This is because aggr
166 * depends on link notifications to attach ports whose link is up.
167 */
168 note = mac_no_notification(mh);
169 if ((note & (DL_NOTE_LINK_UP | DL_NOTE_LINK_DOWN)) != 0) {
170 no_link_update = B_TRUE;
171 if (!force) {
172 /*
173 * We borrow this error code to indicate that link
174 * notification is not supported.
175 */
176 err = ENETDOWN;
177 goto fail;
178 }
179 }
180
181 if (((err = dls_mgmt_get_linkinfo(grp->lg_linkid,
182 aggr_name, NULL, NULL, NULL)) != 0) ||
183 ((err = dls_mgmt_get_linkinfo(linkid, port_name,
184 NULL, NULL, NULL)) != 0)) {
185 goto fail;
186 }
187
188 (void) snprintf(client_name, MAXNAMELEN, "%s-%s", aggr_name, port_name);
189 if ((err = mac_client_open(mh, &mch, client_name,
190 MAC_OPEN_FLAGS_IS_AGGR_PORT | MAC_OPEN_FLAGS_EXCLUSIVE)) != 0) {
191 goto fail;
192 }
193
194 if ((portid = (uint16_t)id_alloc(aggr_portids)) == 0) {
195 err = ENOMEM;
196 goto fail;
197 }
198
199 /*
200 * As the underlying mac's current margin size is used to determine
201 * the margin size of the aggregation itself, request the underlying
202 * mac not to change to a smaller size.
203 */
204 if ((err = mac_margin_add(mh, &margin, B_TRUE)) != 0) {
205 id_free(aggr_portids, portid);
206 goto fail;
207 }
208
209 if ((err = mac_unicast_add(mch, NULL, MAC_UNICAST_PRIMARY |
210 MAC_UNICAST_DISABLE_TX_VID_CHECK, &mah, 0, &diag)) != 0) {
211 VERIFY(mac_margin_remove(mh, margin) == 0);
212 id_free(aggr_portids, portid);
213 goto fail;
214 }
215
216 port = kmem_cache_alloc(aggr_port_cache, KM_SLEEP);
217
218 port->lp_refs = 1;
219 port->lp_next = NULL;
220 port->lp_mh = mh;
221 port->lp_mch = mch;
222 port->lp_mip = mip;
223 port->lp_linkid = linkid;
224 port->lp_closing = B_FALSE;
225 port->lp_mah = mah;
226
227 /* get the port's original MAC address */
228 mac_unicast_primary_get(port->lp_mh, port->lp_addr);
229
230 /* initialize state */
231 port->lp_state = AGGR_PORT_STATE_STANDBY;
232 port->lp_link_state = LINK_STATE_UNKNOWN;
233 port->lp_ifspeed = 0;
234 port->lp_link_duplex = LINK_DUPLEX_UNKNOWN;
235 port->lp_started = B_FALSE;
236 port->lp_tx_enabled = B_FALSE;
237 port->lp_promisc_on = B_FALSE;
238 port->lp_no_link_update = no_link_update;
239 port->lp_portid = portid;
240 port->lp_margin = margin;
241 port->lp_prom_addr = NULL;
242
243 /*
244 * Save the current statistics of the port. They will be used
245 * later by aggr_m_stats() when aggregating the statistics of
246 * the constituent ports.
247 */
248 for (i = 0; i < MAC_NSTAT; i++) {
249 port->lp_stat[i] =
250 aggr_port_stat(port, i + MAC_STAT_MIN);
251 }
252 for (i = 0; i < ETHER_NSTAT; i++) {
253 port->lp_ether_stat[i] =
254 aggr_port_stat(port, i + MACTYPE_STAT_MIN);
255 }
256
257 /* LACP related state */
258 port->lp_collector_enabled = B_FALSE;
259
260 *pp = port;
261 return (0);
262
263 fail:
264 if (mch != NULL)
265 mac_client_close(mch, MAC_CLOSE_FLAGS_EXCLUSIVE);
266 mac_close(mh);
267 return (err);
268 }
269
270 void
271 aggr_port_delete(aggr_port_t *port)
272 {
273 aggr_lacp_port_t *pl = &port->lp_lacp;
274
275 ASSERT(port->lp_mphp == NULL);
276 ASSERT(!port->lp_promisc_on);
277
278 port->lp_closing = B_TRUE;
279
280 VERIFY(mac_margin_remove(port->lp_mh, port->lp_margin) == 0);
281 mac_rx_clear(port->lp_mch);
282 /*
283 * If the notification callback is already in process and waiting for
284 * the aggr grp's mac perimeter, don't wait (otherwise there would be
285 * deadlock). Otherwise, if mac_notify_remove() succeeds, we can
286 * release the reference held when mac_notify_add() is called.
287 */
288 if ((port->lp_mnh != NULL) &&
289 (mac_notify_remove(port->lp_mnh, B_FALSE) == 0)) {
290 aggr_grp_port_rele(port);
291 }
292 port->lp_mnh = NULL;
293
294 /*
295 * Inform the the port lacp timer thread to exit. Note that waiting
296 * for the thread to exit may cause deadlock since that thread may
297 * need to enter into the mac perimeter which we are currently in.
298 * It is fine to continue without waiting though since that thread
299 * is holding a reference of the port.
300 */
301 mutex_enter(&pl->lacp_timer_lock);
302 pl->lacp_timer_bits |= LACP_THREAD_EXIT;
303 cv_broadcast(&pl->lacp_timer_cv);
304 mutex_exit(&pl->lacp_timer_lock);
305
306 /*
307 * Restore the port MAC address. Note it is called after the
308 * port's notification callback being removed. This prevent
309 * port's MAC_NOTE_UNICST notify callback function being called.
310 */
311 (void) mac_unicast_primary_set(port->lp_mh, port->lp_addr);
312 if (port->lp_mah != NULL)
313 (void) mac_unicast_remove(port->lp_mch, port->lp_mah);
314 mac_client_close(port->lp_mch, MAC_CLOSE_FLAGS_EXCLUSIVE);
315 mac_close(port->lp_mh);
316 AGGR_PORT_REFRELE(port);
317 }
318
319 void
320 aggr_port_free(aggr_port_t *port)
321 {
322 ASSERT(port->lp_refs == 0);
323 if (port->lp_grp != NULL)
324 AGGR_GRP_REFRELE(port->lp_grp);
325 port->lp_grp = NULL;
326 id_free(aggr_portids, port->lp_portid);
327 port->lp_portid = 0;
328 mutex_destroy(&port->lp_lacp.lacp_timer_lock);
329 cv_destroy(&port->lp_lacp.lacp_timer_cv);
330 kmem_cache_free(aggr_port_cache, port);
331 }
332
333 /*
334 * Invoked upon receiving a MAC_NOTE_LINK notification for
335 * one of the constituent ports.
336 */
337 boolean_t
338 aggr_port_notify_link(aggr_grp_t *grp, aggr_port_t *port)
339 {
340 boolean_t do_attach = B_FALSE;
341 boolean_t do_detach = B_FALSE;
342 boolean_t link_state_changed = B_TRUE;
343 uint64_t ifspeed;
344 link_state_t link_state;
345 link_duplex_t link_duplex;
346 mac_perim_handle_t mph;
347
348 ASSERT(MAC_PERIM_HELD(grp->lg_mh));
349 mac_perim_enter_by_mh(port->lp_mh, &mph);
350
351 /*
352 * link state change? For links that do not support link state
353 * notification, always assume the link is up.
354 */
355 link_state = port->lp_no_link_update ? LINK_STATE_UP :
356 mac_link_get(port->lp_mh);
357 if (port->lp_link_state != link_state) {
358 if (link_state == LINK_STATE_UP)
359 do_attach = (port->lp_link_state != LINK_STATE_UP);
360 else
361 do_detach = (port->lp_link_state == LINK_STATE_UP);
362 }
363 port->lp_link_state = link_state;
364
365 /* link duplex change? */
366 link_duplex = aggr_port_stat(port, ETHER_STAT_LINK_DUPLEX);
367 if (port->lp_link_duplex != link_duplex) {
368 if (link_duplex == LINK_DUPLEX_FULL)
369 do_attach |= (port->lp_link_duplex != LINK_DUPLEX_FULL);
370 else
371 do_detach |= (port->lp_link_duplex == LINK_DUPLEX_FULL);
372 }
373 port->lp_link_duplex = link_duplex;
374
375 /* link speed changes? */
376 ifspeed = aggr_port_stat(port, MAC_STAT_IFSPEED);
377 if (port->lp_ifspeed != ifspeed) {
378 mutex_enter(&grp->lg_stat_lock);
379
380 if (port->lp_state == AGGR_PORT_STATE_ATTACHED)
381 do_detach |= (ifspeed != grp->lg_ifspeed);
382 else
383 do_attach |= (ifspeed == grp->lg_ifspeed);
384
385 mutex_exit(&grp->lg_stat_lock);
386 }
387 port->lp_ifspeed = ifspeed;
388
389 if (do_attach) {
390 /* attempt to attach the port to the aggregation */
391 link_state_changed = aggr_grp_attach_port(grp, port);
392 } else if (do_detach) {
393 /* detach the port from the aggregation */
394 link_state_changed = aggr_grp_detach_port(grp, port);
395 }
396
397 mac_perim_exit(mph);
398 return (link_state_changed);
399 }
400
401 /*
402 * Invoked upon receiving a MAC_NOTE_UNICST for one of the constituent
403 * ports of a group.
404 */
405 static void
406 aggr_port_notify_unicst(aggr_grp_t *grp, aggr_port_t *port,
407 boolean_t *mac_addr_changedp, boolean_t *link_state_changedp)
408 {
409 boolean_t mac_addr_changed = B_FALSE;
410 boolean_t link_state_changed = B_FALSE;
411 uint8_t mac_addr[ETHERADDRL];
412 mac_perim_handle_t mph;
413
414 ASSERT(MAC_PERIM_HELD(grp->lg_mh));
415 ASSERT(mac_addr_changedp != NULL);
416 ASSERT(link_state_changedp != NULL);
417 mac_perim_enter_by_mh(port->lp_mh, &mph);
418
419 /*
420 * If it is called when setting the MAC address to the
421 * aggregation group MAC address, do nothing.
422 */
423 mac_unicast_primary_get(port->lp_mh, mac_addr);
424 if (bcmp(mac_addr, grp->lg_addr, ETHERADDRL) == 0) {
425 mac_perim_exit(mph);
426 goto done;
427 }
428
429 /* save the new port MAC address */
430 bcopy(mac_addr, port->lp_addr, ETHERADDRL);
431
432 aggr_grp_port_mac_changed(grp, port, &mac_addr_changed,
433 &link_state_changed);
434
435 mac_perim_exit(mph);
436
437 /*
438 * If this port was used to determine the MAC address of
439 * the group, update the MAC address of the constituent
440 * ports.
441 */
442 if (mac_addr_changed && aggr_grp_update_ports_mac(grp))
443 link_state_changed = B_TRUE;
444
445 done:
446 *mac_addr_changedp = mac_addr_changed;
447 *link_state_changedp = link_state_changed;
448 }
449
450 /*
451 * Notification callback invoked by the MAC service module for
452 * a particular MAC port.
453 */
454 static void
455 aggr_port_notify_cb(void *arg, mac_notify_type_t type)
456 {
457 aggr_port_t *port = arg;
458 aggr_grp_t *grp = port->lp_grp;
459 boolean_t mac_addr_changed, link_state_changed;
460 mac_perim_handle_t mph;
461
462 mac_perim_enter_by_mh(grp->lg_mh, &mph);
463 if (port->lp_closing) {
464 mac_perim_exit(mph);
465
466 /*
467 * Release the reference so it is safe for aggr to call
468 * mac_unregister() now.
469 */
470 aggr_grp_port_rele(port);
471 return;
472 }
473
474 switch (type) {
475 case MAC_NOTE_TX:
476 mac_tx_update(grp->lg_mh);
477 break;
478 case MAC_NOTE_LINK:
479 if (aggr_port_notify_link(grp, port))
480 mac_link_update(grp->lg_mh, grp->lg_link_state);
481 break;
482 case MAC_NOTE_UNICST:
483 aggr_port_notify_unicst(grp, port, &mac_addr_changed,
484 &link_state_changed);
485 if (mac_addr_changed)
486 mac_unicst_update(grp->lg_mh, grp->lg_addr);
487 if (link_state_changed)
488 mac_link_update(grp->lg_mh, grp->lg_link_state);
489 break;
490 default:
491 break;
492 }
493
494 mac_perim_exit(mph);
495 }
496
497 int
498 aggr_port_start(aggr_port_t *port)
499 {
500 ASSERT(MAC_PERIM_HELD(port->lp_mh));
501
502 if (port->lp_started)
503 return (0);
504
505 port->lp_started = B_TRUE;
506 aggr_grp_multicst_port(port, B_TRUE);
507 return (0);
508 }
509
510 void
511 aggr_port_stop(aggr_port_t *port)
512 {
513 ASSERT(MAC_PERIM_HELD(port->lp_mh));
514
515 if (!port->lp_started)
516 return;
517
518 aggr_grp_multicst_port(port, B_FALSE);
519
520 /* update the port state */
521 port->lp_started = B_FALSE;
522 }
523
524 int
525 aggr_port_promisc(aggr_port_t *port, boolean_t on)
526 {
527 int rc;
528
529 ASSERT(MAC_PERIM_HELD(port->lp_mh));
530
531 if (on == port->lp_promisc_on)
532 /* already in desired promiscous mode */
533 return (0);
534
535 if (on) {
536 mac_rx_clear(port->lp_mch);
537
538 /*
539 * We use the promisc callback because without hardware
540 * rings, we deliver through flows that will cause duplicate
541 * delivery of packets when we've flipped into this mode
542 * to compensate for the lack of hardware MAC matching
543 */
544 rc = mac_promisc_add(port->lp_mch, MAC_CLIENT_PROMISC_ALL,
545 aggr_recv_promisc_cb, port, &port->lp_mphp,
546 MAC_PROMISC_FLAGS_NO_TX_LOOP);
547 if (rc != 0) {
548 mac_rx_set(port->lp_mch, aggr_recv_cb, port);
549 return (rc);
550 }
551 } else {
552 mac_promisc_remove(port->lp_mphp);
553 port->lp_mphp = NULL;
554 mac_rx_set(port->lp_mch, aggr_recv_cb, port);
555 }
556
557 port->lp_promisc_on = on;
558
559 return (0);
560 }
561
562 /*
563 * Set the MAC address of a port.
564 */
565 int
566 aggr_port_unicst(aggr_port_t *port)
567 {
568 aggr_grp_t *grp = port->lp_grp;
569
570 ASSERT(MAC_PERIM_HELD(grp->lg_mh));
571 ASSERT(MAC_PERIM_HELD(port->lp_mh));
572
573 return (mac_unicast_primary_set(port->lp_mh, grp->lg_addr));
574 }
575
576 /*
577 * Add or remove a multicast address to/from a port.
578 */
579 int
580 aggr_port_multicst(void *arg, boolean_t add, const uint8_t *addrp)
581 {
582 aggr_port_t *port = arg;
583
584 if (add) {
585 return (mac_multicast_add(port->lp_mch, addrp));
586 } else {
587 mac_multicast_remove(port->lp_mch, addrp);
588 return (0);
589 }
590 }
591
592 uint64_t
593 aggr_port_stat(aggr_port_t *port, uint_t stat)
594 {
595 return (mac_stat_get(port->lp_mh, stat));
596 }
597
598 /*
599 * Add a non-primary unicast address to the underlying port. If the port
600 * supports HW Rx group, try to add the address into the HW Rx group of
601 * the port first. If that fails, or if the port does not support HW Rx
602 * group, enable the port's promiscous mode.
603 */
604 int
605 aggr_port_addmac(aggr_port_t *port, const uint8_t *mac_addr)
606 {
607 aggr_unicst_addr_t *addr, **pprev;
608 mac_perim_handle_t pmph;
609 int err;
610
611 ASSERT(MAC_PERIM_HELD(port->lp_grp->lg_mh));
612 mac_perim_enter_by_mh(port->lp_mh, &pmph);
613
614 /*
615 * If the underlying port support HW Rx group, add the mac to its
616 * RX group directly.
617 */
618 if ((port->lp_hwgh != NULL) &&
619 ((mac_hwgroup_addmac(port->lp_hwgh, mac_addr)) == 0)) {
620 mac_perim_exit(pmph);
621 return (0);
622 }
623
624 /*
625 * If that fails, or if the port does not support HW Rx group, enable
626 * the port's promiscous mode. (Note that we turn on the promiscous
627 * mode only if the port is already started.
628 */
629 if (port->lp_started &&
630 ((err = aggr_port_promisc(port, B_TRUE)) != 0)) {
631 mac_perim_exit(pmph);
632 return (err);
633 }
634
635 /*
636 * Walk through the unicast addresses that requires promiscous mode
637 * enabled on this port, and add this address to the end of the list.
638 */
639 pprev = &port->lp_prom_addr;
640 while ((addr = *pprev) != NULL) {
641 ASSERT(bcmp(mac_addr, addr->aua_addr, ETHERADDRL) != 0);
642 pprev = &addr->aua_next;
643 }
644 addr = kmem_alloc(sizeof (aggr_unicst_addr_t), KM_SLEEP);
645 bcopy(mac_addr, addr->aua_addr, ETHERADDRL);
646 addr->aua_next = NULL;
647 *pprev = addr;
648 mac_perim_exit(pmph);
649 return (0);
650 }
651
652 /*
653 * Remove a non-primary unicast address from the underlying port. This address
654 * must has been added by aggr_port_addmac(). As a result, we probably need to
655 * remove the address from the port's HW Rx group, or to disable the port's
656 * promiscous mode.
657 */
658 void
659 aggr_port_remmac(aggr_port_t *port, const uint8_t *mac_addr)
660 {
661 aggr_grp_t *grp = port->lp_grp;
662 aggr_unicst_addr_t *addr, **pprev;
663 mac_perim_handle_t pmph;
664
665 ASSERT(MAC_PERIM_HELD(grp->lg_mh));
666 mac_perim_enter_by_mh(port->lp_mh, &pmph);
667
668 /*
669 * See whether this address is in the list of addresses that requires
670 * the port being promiscous mode.
671 */
672 pprev = &port->lp_prom_addr;
673 while ((addr = *pprev) != NULL) {
674 if (bcmp(mac_addr, addr->aua_addr, ETHERADDRL) == 0)
675 break;
676 pprev = &addr->aua_next;
677 }
678 if (addr != NULL) {
679 /*
680 * This unicast address put the port into the promiscous mode,
681 * delete this address from the lp_prom_addr list. If this is
682 * the last address in that list, disable the promiscous mode
683 * if the aggregation is not in promiscous mode.
684 */
685 *pprev = addr->aua_next;
686 kmem_free(addr, sizeof (aggr_unicst_addr_t));
687 if (port->lp_prom_addr == NULL && !grp->lg_promisc)
688 (void) aggr_port_promisc(port, B_FALSE);
689 } else {
690 ASSERT(port->lp_hwgh != NULL);
691 (void) mac_hwgroup_remmac(port->lp_hwgh, mac_addr);
692 }
693 mac_perim_exit(pmph);
694 }
695
696 int
697 aggr_port_addvlan(aggr_port_t *port, uint16_t vid)
698 {
699 mac_perim_handle_t pmph;
700 int err;
701
702 ASSERT(MAC_PERIM_HELD(port->lp_grp->lg_mh));
703 mac_perim_enter_by_mh(port->lp_mh, &pmph);
704
705 /*
706 * Add the VLAN filter to the HW group if the port has a HW
707 * group. If the port doesn't have a HW group, then it will
708 * implicitly allow tagged traffic to pass and there is
709 * nothing to do.
710 */
711 if (port->lp_hwgh == NULL)
712 return (0);
713
714 err = mac_hwgroup_addvlan(port->lp_hwgh, vid);
715 mac_perim_exit(pmph);
716 return (err);
717 }
718
719 int
720 aggr_port_remvlan(aggr_port_t *port, uint16_t vid)
721 {
722 mac_perim_handle_t pmph;
723 int err;
724
725 ASSERT(MAC_PERIM_HELD(port->lp_grp->lg_mh));
726 mac_perim_enter_by_mh(port->lp_mh, &pmph);
727
728 if (port->lp_hwgh == NULL)
729 return (0);
730
731 err = mac_hwgroup_remvlan(port->lp_hwgh, vid);
732 mac_perim_exit(pmph);
733 return (err);
734 }