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 (c) 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright 2018 Joyent, Inc.
24 * Copyright 2016 OmniTI Computer Consulting, Inc. All rights reserved.
25 * Copyright 2020 OmniOS Community Edition (OmniOSce) Association.
26 * Copyright 2022 RackTop Systems, Inc.
27 */
28
29 #include <sys/types.h>
30 #include <sys/cred.h>
31 #include <sys/sysmacros.h>
32 #include <sys/conf.h>
33 #include <sys/cmn_err.h>
34 #include <sys/list.h>
35 #include <sys/ksynch.h>
36 #include <sys/kmem.h>
37 #include <sys/stream.h>
38 #include <sys/modctl.h>
39 #include <sys/ddi.h>
40 #include <sys/sunddi.h>
41 #include <sys/atomic.h>
42 #include <sys/stat.h>
43 #include <sys/modhash.h>
44 #include <sys/strsubr.h>
45 #include <sys/strsun.h>
46 #include <sys/dlpi.h>
47 #include <sys/mac.h>
48 #include <sys/mac_provider.h>
49 #include <sys/mac_client.h>
50 #include <sys/mac_client_priv.h>
51 #include <sys/mac_ether.h>
52 #include <sys/dls.h>
53 #include <sys/pattr.h>
54 #include <sys/time.h>
55 #include <sys/vlan.h>
56 #include <sys/vnic.h>
57 #include <sys/vnic_impl.h>
58 #include <sys/mac_impl.h>
59 #include <sys/mac_flow_impl.h>
60 #include <inet/ip_impl.h>
61
62 /*
63 * Note that for best performance, the VNIC is a passthrough design.
64 * For each VNIC corresponds a MAC client of the underlying MAC (lower MAC).
65 * This MAC client is opened by the VNIC driver at VNIC creation,
66 * and closed when the VNIC is deleted.
67 * When a MAC client of the VNIC itself opens a VNIC, the MAC layer
68 * (upper MAC) detects that the MAC being opened is a VNIC. Instead
69 * of allocating a new MAC client, it asks the VNIC driver to return
70 * the lower MAC client handle associated with the VNIC, and that handle
71 * is returned to the upper MAC client directly. This allows access
72 * by upper MAC clients of the VNIC to have direct access to the lower
73 * MAC client for the control path and data path.
74 *
75 * Due to this passthrough, some of the entry points exported by the
76 * VNIC driver are never directly invoked. These entry points include
77 * vnic_m_start, vnic_m_stop, vnic_m_promisc, vnic_m_multicst, etc.
78 *
79 * VNICs support multiple upper mac clients to enable support for
80 * multiple MAC addresses on the VNIC. When the VNIC is created the
81 * initial mac client is the primary upper mac. Any additional mac
82 * clients are secondary macs.
83 */
84
85 static int vnic_m_start(void *);
86 static void vnic_m_stop(void *);
87 static int vnic_m_promisc(void *, boolean_t);
88 static int vnic_m_multicst(void *, boolean_t, const uint8_t *);
89 static int vnic_m_unicst(void *, const uint8_t *);
90 static int vnic_m_stat(void *, uint_t, uint64_t *);
91 static void vnic_m_ioctl(void *, queue_t *, mblk_t *);
92 static int vnic_m_setprop(void *, const char *, mac_prop_id_t, uint_t,
93 const void *);
94 static int vnic_m_getprop(void *, const char *, mac_prop_id_t, uint_t, void *);
95 static void vnic_m_propinfo(void *, const char *, mac_prop_id_t,
96 mac_prop_info_handle_t);
97 static mblk_t *vnic_m_tx(void *, mblk_t *);
98 static boolean_t vnic_m_capab_get(void *, mac_capab_t, void *);
99 static void vnic_notify_cb(void *, mac_notify_type_t);
100 static void vnic_cleanup_secondary_macs(vnic_t *, int);
101
102 static kmem_cache_t *vnic_cache;
103 static krwlock_t vnic_lock;
104 static uint_t vnic_count;
105
106 #define ANCHOR_VNIC_MIN_MTU 576
107 #define ANCHOR_VNIC_MAX_MTU 9000
108
109 /* hash of VNICs (vnic_t's), keyed by VNIC id */
110 static mod_hash_t *vnic_hash;
111 #define VNIC_HASHSZ 64
112 #define VNIC_HASH_KEY(vnic_id) ((mod_hash_key_t)(uintptr_t)vnic_id)
113
114 #define VNIC_M_CALLBACK_FLAGS \
115 (MC_IOCTL | MC_GETCAPAB | MC_SETPROP | MC_GETPROP | MC_PROPINFO)
116
117 static mac_callbacks_t vnic_m_callbacks = {
118 VNIC_M_CALLBACK_FLAGS,
119 vnic_m_stat,
120 vnic_m_start,
121 vnic_m_stop,
122 vnic_m_promisc,
123 vnic_m_multicst,
124 vnic_m_unicst,
125 vnic_m_tx,
126 NULL,
127 vnic_m_ioctl,
128 vnic_m_capab_get,
129 NULL,
130 NULL,
131 vnic_m_setprop,
132 vnic_m_getprop,
133 vnic_m_propinfo
134 };
135
136 void
vnic_dev_init(void)137 vnic_dev_init(void)
138 {
139 vnic_cache = kmem_cache_create("vnic_cache",
140 sizeof (vnic_t), 0, NULL, NULL, NULL, NULL, NULL, 0);
141
142 vnic_hash = mod_hash_create_idhash("vnic_hash",
143 VNIC_HASHSZ, mod_hash_null_valdtor);
144
145 rw_init(&vnic_lock, NULL, RW_DEFAULT, NULL);
146
147 vnic_count = 0;
148 }
149
150 void
vnic_dev_fini(void)151 vnic_dev_fini(void)
152 {
153 ASSERT(vnic_count == 0);
154
155 rw_destroy(&vnic_lock);
156 mod_hash_destroy_idhash(vnic_hash);
157 kmem_cache_destroy(vnic_cache);
158 }
159
160 uint_t
vnic_dev_count(void)161 vnic_dev_count(void)
162 {
163 return (vnic_count);
164 }
165
166 static vnic_ioc_diag_t
vnic_mac2vnic_diag(mac_diag_t diag)167 vnic_mac2vnic_diag(mac_diag_t diag)
168 {
169 switch (diag) {
170 case MAC_DIAG_MACADDR_NIC:
171 return (VNIC_IOC_DIAG_MACADDR_NIC);
172 case MAC_DIAG_MACADDR_INUSE:
173 return (VNIC_IOC_DIAG_MACADDR_INUSE);
174 case MAC_DIAG_MACADDR_INVALID:
175 return (VNIC_IOC_DIAG_MACADDR_INVALID);
176 case MAC_DIAG_MACADDRLEN_INVALID:
177 return (VNIC_IOC_DIAG_MACADDRLEN_INVALID);
178 case MAC_DIAG_MACFACTORYSLOTINVALID:
179 return (VNIC_IOC_DIAG_MACFACTORYSLOTINVALID);
180 case MAC_DIAG_MACFACTORYSLOTUSED:
181 return (VNIC_IOC_DIAG_MACFACTORYSLOTUSED);
182 case MAC_DIAG_MACFACTORYSLOTALLUSED:
183 return (VNIC_IOC_DIAG_MACFACTORYSLOTALLUSED);
184 case MAC_DIAG_MACFACTORYNOTSUP:
185 return (VNIC_IOC_DIAG_MACFACTORYNOTSUP);
186 case MAC_DIAG_MACPREFIX_INVALID:
187 return (VNIC_IOC_DIAG_MACPREFIX_INVALID);
188 case MAC_DIAG_MACPREFIXLEN_INVALID:
189 return (VNIC_IOC_DIAG_MACPREFIXLEN_INVALID);
190 case MAC_DIAG_MACNO_HWRINGS:
191 return (VNIC_IOC_DIAG_NO_HWRINGS);
192 default:
193 return (VNIC_IOC_DIAG_NONE);
194 }
195 }
196
197 static int
vnic_unicast_add(vnic_t * vnic,vnic_mac_addr_type_t vnic_addr_type,int * addr_slot,uint_t prefix_len,int * addr_len_ptr_arg,uint8_t * mac_addr_arg,uint16_t flags,vnic_ioc_diag_t * diag,uint16_t vid,boolean_t req_hwgrp_flag)198 vnic_unicast_add(vnic_t *vnic, vnic_mac_addr_type_t vnic_addr_type,
199 int *addr_slot, uint_t prefix_len, int *addr_len_ptr_arg,
200 uint8_t *mac_addr_arg, uint16_t flags, vnic_ioc_diag_t *diag,
201 uint16_t vid, boolean_t req_hwgrp_flag)
202 {
203 mac_diag_t mac_diag = MAC_DIAG_NONE;
204 uint16_t mac_flags = 0;
205 int err;
206 uint_t addr_len;
207
208 if (flags & VNIC_IOC_CREATE_NODUPCHECK)
209 mac_flags |= MAC_UNICAST_NODUPCHECK;
210
211 switch (vnic_addr_type) {
212 case VNIC_MAC_ADDR_TYPE_FIXED:
213 case VNIC_MAC_ADDR_TYPE_VRID:
214 /*
215 * The MAC address value to assign to the VNIC
216 * is already provided in mac_addr_arg. addr_len_ptr_arg
217 * already contains the MAC address length.
218 */
219 break;
220
221 case VNIC_MAC_ADDR_TYPE_RANDOM:
222 /*
223 * Random MAC address. There are two sub-cases:
224 *
225 * 1 - If mac_len == 0, a new MAC address is generated.
226 * The length of the MAC address to generated depends
227 * on the type of MAC used. The prefix to use for the MAC
228 * address is stored in the most significant bytes
229 * of the mac_addr argument, and its length is specified
230 * by the mac_prefix_len argument. This prefix can
231 * correspond to a IEEE OUI in the case of Ethernet,
232 * for example.
233 *
234 * 2 - If mac_len > 0, the address was already picked
235 * randomly, and is now passed back during VNIC
236 * re-creation. The mac_addr argument contains the MAC
237 * address that was generated. We distinguish this
238 * case from the fixed MAC address case, since we
239 * want the user consumers to know, when they query
240 * the list of VNICs, that a VNIC was assigned a
241 * random MAC address vs assigned a fixed address
242 * specified by the user.
243 */
244
245 /*
246 * If it's a pre-generated address, we're done. mac_addr_arg
247 * and addr_len_ptr_arg already contain the MAC address
248 * value and length.
249 */
250 if (*addr_len_ptr_arg > 0)
251 break;
252
253 /* generate a new random MAC address */
254 if ((err = mac_addr_random(vnic->vn_mch,
255 prefix_len, mac_addr_arg, &mac_diag)) != 0) {
256 *diag = vnic_mac2vnic_diag(mac_diag);
257 return (err);
258 }
259 *addr_len_ptr_arg = mac_addr_len(vnic->vn_lower_mh);
260 break;
261
262 case VNIC_MAC_ADDR_TYPE_FACTORY:
263 err = mac_addr_factory_reserve(vnic->vn_mch, addr_slot);
264 if (err != 0) {
265 if (err == EINVAL)
266 *diag = VNIC_IOC_DIAG_MACFACTORYSLOTINVALID;
267 if (err == EBUSY)
268 *diag = VNIC_IOC_DIAG_MACFACTORYSLOTUSED;
269 if (err == ENOSPC)
270 *diag = VNIC_IOC_DIAG_MACFACTORYSLOTALLUSED;
271 return (err);
272 }
273
274 mac_addr_factory_value(vnic->vn_lower_mh, *addr_slot,
275 mac_addr_arg, &addr_len, NULL, NULL);
276 *addr_len_ptr_arg = addr_len;
277 break;
278
279 case VNIC_MAC_ADDR_TYPE_AUTO:
280 /* first try to allocate a factory MAC address */
281 err = mac_addr_factory_reserve(vnic->vn_mch, addr_slot);
282 if (err == 0) {
283 mac_addr_factory_value(vnic->vn_lower_mh, *addr_slot,
284 mac_addr_arg, &addr_len, NULL, NULL);
285 vnic_addr_type = VNIC_MAC_ADDR_TYPE_FACTORY;
286 *addr_len_ptr_arg = addr_len;
287 break;
288 }
289
290 /*
291 * Allocating a factory MAC address failed, generate a
292 * random MAC address instead.
293 */
294 if ((err = mac_addr_random(vnic->vn_mch,
295 prefix_len, mac_addr_arg, &mac_diag)) != 0) {
296 *diag = vnic_mac2vnic_diag(mac_diag);
297 return (err);
298 }
299 *addr_len_ptr_arg = mac_addr_len(vnic->vn_lower_mh);
300 vnic_addr_type = VNIC_MAC_ADDR_TYPE_RANDOM;
301 break;
302 case VNIC_MAC_ADDR_TYPE_PRIMARY:
303 /*
304 * We get the address here since we copy it in the
305 * vnic's vn_addr.
306 * We can't ask for hardware resources since we
307 * don't currently support hardware classification
308 * for these MAC clients.
309 */
310 if (req_hwgrp_flag) {
311 *diag = VNIC_IOC_DIAG_NO_HWRINGS;
312 return (ENOTSUP);
313 }
314 mac_unicast_primary_get(vnic->vn_lower_mh, mac_addr_arg);
315 *addr_len_ptr_arg = mac_addr_len(vnic->vn_lower_mh);
316 mac_flags |= MAC_UNICAST_VNIC_PRIMARY;
317 break;
318 }
319
320 vnic->vn_addr_type = vnic_addr_type;
321
322 err = mac_unicast_add(vnic->vn_mch, mac_addr_arg, mac_flags,
323 &vnic->vn_muh, vid, &mac_diag);
324 if (err != 0) {
325 if (vnic_addr_type == VNIC_MAC_ADDR_TYPE_FACTORY) {
326 /* release factory MAC address */
327 mac_addr_factory_release(vnic->vn_mch, *addr_slot);
328 }
329 *diag = vnic_mac2vnic_diag(mac_diag);
330 }
331
332 return (err);
333 }
334
335 /*
336 * Create a new VNIC upon request from administrator.
337 * Returns 0 on success, an errno on failure.
338 */
339 /* ARGSUSED */
340 int
vnic_dev_create(datalink_id_t vnic_id,datalink_id_t linkid,vnic_mac_addr_type_t * vnic_addr_type,int * mac_len,uchar_t * mac_addr,int * mac_slot,uint_t mac_prefix_len,uint16_t vid,vrid_t vrid,int af,mac_resource_props_t * mrp,uint32_t flags,vnic_ioc_diag_t * diag,cred_t * credp)341 vnic_dev_create(datalink_id_t vnic_id, datalink_id_t linkid,
342 vnic_mac_addr_type_t *vnic_addr_type, int *mac_len, uchar_t *mac_addr,
343 int *mac_slot, uint_t mac_prefix_len, uint16_t vid, vrid_t vrid,
344 int af, mac_resource_props_t *mrp, uint32_t flags, vnic_ioc_diag_t *diag,
345 cred_t *credp)
346 {
347 vnic_t *vnic;
348 mac_register_t *mac;
349 int err;
350 boolean_t is_anchor = ((flags & VNIC_IOC_CREATE_ANCHOR) != 0);
351 char vnic_name[MAXNAMELEN];
352 const mac_info_t *minfop;
353 uint32_t req_hwgrp_flag = B_FALSE;
354
355 *diag = VNIC_IOC_DIAG_NONE;
356
357 rw_enter(&vnic_lock, RW_WRITER);
358
359 /* Does a VNIC with the same id already exist? */
360 err = mod_hash_find(vnic_hash, VNIC_HASH_KEY(vnic_id),
361 (mod_hash_val_t *)&vnic);
362 if (err == 0) {
363 rw_exit(&vnic_lock);
364 return (EEXIST);
365 }
366
367 vnic = kmem_cache_alloc(vnic_cache, KM_NOSLEEP);
368 if (vnic == NULL) {
369 rw_exit(&vnic_lock);
370 return (ENOMEM);
371 }
372
373 bzero(vnic, sizeof (*vnic));
374
375 vnic->vn_ls = LINK_STATE_UNKNOWN;
376 vnic->vn_id = vnic_id;
377 vnic->vn_link_id = linkid;
378 vnic->vn_vrid = vrid;
379 vnic->vn_af = af;
380
381 if (!is_anchor) {
382 if (linkid == DATALINK_INVALID_LINKID) {
383 err = EINVAL;
384 goto bail;
385 }
386
387 /*
388 * Open the lower MAC and assign its initial bandwidth and
389 * MAC address. We do this here during VNIC creation and
390 * do not wait until the upper MAC client open so that we
391 * can validate the VNIC creation parameters (bandwidth,
392 * MAC address, etc) and reserve a factory MAC address if
393 * one was requested.
394 */
395 err = mac_open_by_linkid(linkid, &vnic->vn_lower_mh);
396 if (err != 0)
397 goto bail;
398
399 /*
400 * VNIC(vlan) over VNICs(vlans) is not supported.
401 */
402 if (mac_is_vnic(vnic->vn_lower_mh)) {
403 err = EINVAL;
404 goto bail;
405 }
406
407 /* only ethernet support for now */
408 minfop = mac_info(vnic->vn_lower_mh);
409 if (minfop->mi_nativemedia != DL_ETHER) {
410 err = ENOTSUP;
411 goto bail;
412 }
413
414 (void) dls_mgmt_get_linkinfo(vnic_id, vnic_name, NULL, NULL,
415 NULL);
416 err = mac_client_open(vnic->vn_lower_mh, &vnic->vn_mch,
417 vnic_name, MAC_OPEN_FLAGS_IS_VNIC);
418 if (err != 0)
419 goto bail;
420
421 /* assign a MAC address to the VNIC */
422
423 err = vnic_unicast_add(vnic, *vnic_addr_type, mac_slot,
424 mac_prefix_len, mac_len, mac_addr, flags, diag, vid,
425 req_hwgrp_flag);
426 if (err != 0) {
427 vnic->vn_muh = NULL;
428 if (diag != NULL && req_hwgrp_flag)
429 *diag = VNIC_IOC_DIAG_NO_HWRINGS;
430 goto bail;
431 }
432
433 /* register to receive notification from underlying MAC */
434 vnic->vn_mnh = mac_notify_add(vnic->vn_lower_mh, vnic_notify_cb,
435 vnic);
436
437 *vnic_addr_type = vnic->vn_addr_type;
438 vnic->vn_addr_len = *mac_len;
439 vnic->vn_vid = vid;
440
441 bcopy(mac_addr, vnic->vn_addr, vnic->vn_addr_len);
442
443 if (vnic->vn_addr_type == VNIC_MAC_ADDR_TYPE_FACTORY)
444 vnic->vn_slot_id = *mac_slot;
445
446 /*
447 * Set the initial VNIC capabilities. If the VNIC is created
448 * over MACs which does not support nactive vlan, disable
449 * VNIC's hardware checksum capability if its VID is not 0,
450 * since the underlying MAC would get the hardware checksum
451 * offset wrong in case of VLAN packets.
452 */
453 if (vid == 0 || !mac_capab_get(vnic->vn_lower_mh,
454 MAC_CAPAB_NO_NATIVEVLAN, NULL)) {
455 if (!mac_capab_get(vnic->vn_lower_mh, MAC_CAPAB_HCKSUM,
456 &vnic->vn_hcksum_txflags))
457 vnic->vn_hcksum_txflags = 0;
458 } else {
459 vnic->vn_hcksum_txflags = 0;
460 }
461
462 /*
463 * Check for LSO capabilities. LSO implementations
464 * depend on hardware checksumming, so the same
465 * requirement is enforced here.
466 */
467 if (vnic->vn_hcksum_txflags != 0) {
468 if (!mac_capab_get(vnic->vn_lower_mh, MAC_CAPAB_LSO,
469 &vnic->vn_cap_lso)) {
470 vnic->vn_cap_lso.lso_flags = 0;
471 }
472 } else {
473 vnic->vn_cap_lso.lso_flags = 0;
474 }
475 }
476
477 /* register with the MAC module */
478 if ((mac = mac_alloc(MAC_VERSION)) == NULL)
479 goto bail;
480
481 mac->m_type_ident = MAC_PLUGIN_IDENT_ETHER;
482 mac->m_driver = vnic;
483 mac->m_dip = vnic_get_dip();
484 mac->m_instance = (uint_t)-1;
485 mac->m_src_addr = vnic->vn_addr;
486 mac->m_callbacks = &vnic_m_callbacks;
487
488 if (!is_anchor) {
489 /*
490 * If this is a VNIC based VLAN, then we check for the
491 * margin unless it has been created with the force
492 * flag. If we are configuring a VLAN over an etherstub,
493 * we don't check the margin even if force is not set.
494 */
495 if (vid == 0 || (flags & VNIC_IOC_CREATE_FORCE) != 0) {
496 if (vid != VLAN_ID_NONE)
497 vnic->vn_force = B_TRUE;
498 /*
499 * As the current margin size of the underlying mac is
500 * used to determine the margin size of the VNIC
501 * itself, request the underlying mac not to change
502 * to a smaller margin size.
503 */
504 err = mac_margin_add(vnic->vn_lower_mh,
505 &vnic->vn_margin, B_TRUE);
506 ASSERT(err == 0);
507 } else {
508 vnic->vn_margin = VLAN_TAGSZ;
509 err = mac_margin_add(vnic->vn_lower_mh,
510 &vnic->vn_margin, B_FALSE);
511 if (err != 0) {
512 mac_free(mac);
513 if (diag != NULL)
514 *diag = VNIC_IOC_DIAG_MACMARGIN_INVALID;
515 goto bail;
516 }
517 }
518
519 mac_sdu_get(vnic->vn_lower_mh, &mac->m_min_sdu,
520 &mac->m_max_sdu);
521 err = mac_mtu_add(vnic->vn_lower_mh, &mac->m_max_sdu, B_FALSE);
522 if (err != 0) {
523 VERIFY(mac_margin_remove(vnic->vn_lower_mh,
524 vnic->vn_margin) == 0);
525 mac_free(mac);
526 if (diag != NULL)
527 *diag = VNIC_IOC_DIAG_MACMTU_INVALID;
528 goto bail;
529 }
530 vnic->vn_mtu = mac->m_max_sdu;
531 } else {
532 vnic->vn_margin = VLAN_TAGSZ;
533 mac->m_min_sdu = 1;
534 mac->m_max_sdu = ANCHOR_VNIC_MAX_MTU;
535 vnic->vn_mtu = ANCHOR_VNIC_MAX_MTU;
536 }
537
538 mac->m_margin = vnic->vn_margin;
539
540 err = mac_register(mac, &vnic->vn_mh);
541 mac_free(mac);
542 if (err != 0) {
543 if (!is_anchor) {
544 VERIFY(mac_mtu_remove(vnic->vn_lower_mh,
545 vnic->vn_mtu) == 0);
546 VERIFY(mac_margin_remove(vnic->vn_lower_mh,
547 vnic->vn_margin) == 0);
548 }
549 goto bail;
550 }
551
552 /* Set the VNIC's MAC in the client */
553 if (!is_anchor) {
554 mac_set_upper_mac(vnic->vn_mch, vnic->vn_mh, mrp);
555
556 if (mrp != NULL) {
557 if ((mrp->mrp_mask & MRP_RX_RINGS) != 0 ||
558 (mrp->mrp_mask & MRP_TX_RINGS) != 0) {
559 req_hwgrp_flag = B_TRUE;
560 }
561 err = mac_client_set_resources(vnic->vn_mch, mrp);
562 if (err != 0) {
563 VERIFY(mac_mtu_remove(vnic->vn_lower_mh,
564 vnic->vn_mtu) == 0);
565 VERIFY(mac_margin_remove(vnic->vn_lower_mh,
566 vnic->vn_margin) == 0);
567 (void) mac_unregister(vnic->vn_mh);
568 goto bail;
569 }
570 }
571 }
572
573 err = dls_devnet_create(vnic->vn_mh, vnic->vn_id, crgetzoneid(credp));
574 if (err != 0) {
575 if (!is_anchor) {
576 VERIFY(mac_mtu_remove(vnic->vn_lower_mh,
577 vnic->vn_mtu) == 0);
578 VERIFY(mac_margin_remove(vnic->vn_lower_mh,
579 vnic->vn_margin) == 0);
580 }
581 (void) mac_unregister(vnic->vn_mh);
582 goto bail;
583 }
584
585 /* add new VNIC to hash table */
586 err = mod_hash_insert(vnic_hash, VNIC_HASH_KEY(vnic_id),
587 (mod_hash_val_t)vnic);
588 ASSERT(err == 0);
589 vnic_count++;
590
591 /*
592 * Now that we've enabled this VNIC, we should go through and update the
593 * link state by setting it to our parents.
594 */
595 vnic->vn_enabled = B_TRUE;
596
597 if (is_anchor) {
598 vnic->vn_ls = LINK_STATE_UP;
599 } else {
600 vnic->vn_ls = mac_client_stat_get(vnic->vn_mch,
601 MAC_STAT_LINK_STATE);
602 }
603 mac_link_update(vnic->vn_mh, vnic->vn_ls);
604
605 rw_exit(&vnic_lock);
606
607 return (0);
608
609 bail:
610 rw_exit(&vnic_lock);
611 if (!is_anchor) {
612 if (vnic->vn_mnh != NULL)
613 (void) mac_notify_remove(vnic->vn_mnh, B_TRUE);
614 if (vnic->vn_muh != NULL)
615 (void) mac_unicast_remove(vnic->vn_mch, vnic->vn_muh);
616 if (vnic->vn_mch != NULL)
617 mac_client_close(vnic->vn_mch, MAC_CLOSE_FLAGS_IS_VNIC);
618 if (vnic->vn_lower_mh != NULL)
619 mac_close(vnic->vn_lower_mh);
620 }
621
622 kmem_cache_free(vnic_cache, vnic);
623 return (err);
624 }
625
626 /*
627 * Modify the properties of an existing VNIC.
628 */
629 /* ARGSUSED */
630 int
vnic_dev_modify(datalink_id_t vnic_id,uint_t modify_mask,vnic_mac_addr_type_t mac_addr_type,uint_t mac_len,uchar_t * mac_addr,uint_t mac_slot,mac_resource_props_t * mrp)631 vnic_dev_modify(datalink_id_t vnic_id, uint_t modify_mask,
632 vnic_mac_addr_type_t mac_addr_type, uint_t mac_len, uchar_t *mac_addr,
633 uint_t mac_slot, mac_resource_props_t *mrp)
634 {
635 vnic_t *vnic = NULL;
636
637 rw_enter(&vnic_lock, RW_WRITER);
638
639 if (mod_hash_find(vnic_hash, VNIC_HASH_KEY(vnic_id),
640 (mod_hash_val_t *)&vnic) != 0) {
641 rw_exit(&vnic_lock);
642 return (ENOENT);
643 }
644
645 rw_exit(&vnic_lock);
646
647 return (0);
648 }
649
650 /* ARGSUSED */
651 int
vnic_dev_delete(datalink_id_t vnic_id,uint32_t flags,cred_t * credp)652 vnic_dev_delete(datalink_id_t vnic_id, uint32_t flags, cred_t *credp)
653 {
654 vnic_t *vnic = NULL;
655 mod_hash_val_t val;
656 datalink_id_t tmpid;
657 int rc;
658
659 rw_enter(&vnic_lock, RW_WRITER);
660
661 if (mod_hash_find(vnic_hash, VNIC_HASH_KEY(vnic_id),
662 (mod_hash_val_t *)&vnic) != 0) {
663 rw_exit(&vnic_lock);
664 return (ENOENT);
665 }
666
667 if ((rc = dls_devnet_destroy(vnic->vn_mh, &tmpid, B_TRUE)) != 0) {
668 rw_exit(&vnic_lock);
669 return (rc);
670 }
671
672 ASSERT(vnic_id == tmpid);
673
674 /*
675 * We cannot unregister the MAC yet. Unregistering would
676 * free up mac_impl_t which should not happen at this time.
677 * So disable mac_impl_t by calling mac_disable(). This will prevent
678 * any new claims on mac_impl_t.
679 */
680 if ((rc = mac_disable(vnic->vn_mh)) != 0) {
681 (void) dls_devnet_create(vnic->vn_mh, vnic_id,
682 crgetzoneid(credp));
683 rw_exit(&vnic_lock);
684 return (rc);
685 }
686
687 vnic_cleanup_secondary_macs(vnic, vnic->vn_nhandles);
688
689 vnic->vn_enabled = B_FALSE;
690 (void) mod_hash_remove(vnic_hash, VNIC_HASH_KEY(vnic_id), &val);
691 ASSERT(vnic == (vnic_t *)val);
692 vnic_count--;
693 rw_exit(&vnic_lock);
694
695 /*
696 * XXX-nicolas shouldn't have a void cast here, if it's
697 * expected that the function will never fail, then we should
698 * have an ASSERT().
699 */
700 (void) mac_unregister(vnic->vn_mh);
701
702 if (vnic->vn_lower_mh != NULL) {
703 /*
704 * Check if MAC address for the vnic was obtained from the
705 * factory MAC addresses. If yes, release it.
706 */
707 if (vnic->vn_addr_type == VNIC_MAC_ADDR_TYPE_FACTORY) {
708 (void) mac_addr_factory_release(vnic->vn_mch,
709 vnic->vn_slot_id);
710 }
711 (void) mac_margin_remove(vnic->vn_lower_mh, vnic->vn_margin);
712 (void) mac_mtu_remove(vnic->vn_lower_mh, vnic->vn_mtu);
713 (void) mac_notify_remove(vnic->vn_mnh, B_TRUE);
714 (void) mac_unicast_remove(vnic->vn_mch, vnic->vn_muh);
715 mac_client_close(vnic->vn_mch, MAC_CLOSE_FLAGS_IS_VNIC);
716 mac_close(vnic->vn_lower_mh);
717 }
718
719 kmem_cache_free(vnic_cache, vnic);
720 return (0);
721 }
722
723 /* ARGSUSED */
724 mblk_t *
vnic_m_tx(void * arg,mblk_t * mp_chain)725 vnic_m_tx(void *arg, mblk_t *mp_chain)
726 {
727 /*
728 * This function could be invoked for an anchor VNIC when sending
729 * broadcast and multicast packets, and unicast packets which did
730 * not match any local known destination.
731 */
732 freemsgchain(mp_chain);
733 return (NULL);
734 }
735
736 /*ARGSUSED*/
737 static void
vnic_m_ioctl(void * arg,queue_t * q,mblk_t * mp)738 vnic_m_ioctl(void *arg, queue_t *q, mblk_t *mp)
739 {
740 miocnak(q, mp, 0, ENOTSUP);
741 }
742
743 /*
744 * This entry point cannot be passed-through, since it is invoked
745 * for the per-VNIC kstats which must be exported independently
746 * of the existence of VNIC MAC clients.
747 */
748 static int
vnic_m_stat(void * arg,uint_t stat,uint64_t * val)749 vnic_m_stat(void *arg, uint_t stat, uint64_t *val)
750 {
751 vnic_t *vnic = arg;
752 int rval = 0;
753
754 if (vnic->vn_lower_mh == NULL) {
755 /*
756 * It's an anchor VNIC, which does not have any
757 * statistics in itself.
758 */
759 return (ENOTSUP);
760 }
761
762 /*
763 * ENOTSUP must be reported for unsupported stats, the VNIC
764 * driver reports a subset of the stats that would
765 * be returned by a real piece of hardware.
766 */
767
768 switch (stat) {
769 case MAC_STAT_LINK_STATE:
770 case MAC_STAT_LINK_UP:
771 case MAC_STAT_PROMISC:
772 case MAC_STAT_IFSPEED:
773 case MAC_STAT_MULTIRCV:
774 case MAC_STAT_MULTIXMT:
775 case MAC_STAT_BRDCSTRCV:
776 case MAC_STAT_BRDCSTXMT:
777 case MAC_STAT_OPACKETS:
778 case MAC_STAT_OBYTES:
779 case MAC_STAT_IERRORS:
780 case MAC_STAT_OERRORS:
781 case MAC_STAT_RBYTES:
782 case MAC_STAT_IPACKETS:
783 *val = mac_client_stat_get(vnic->vn_mch, stat);
784 break;
785 default:
786 rval = ENOTSUP;
787 }
788
789 return (rval);
790 }
791
792 /*
793 * Invoked by the upper MAC to retrieve the lower MAC client handle
794 * corresponding to a VNIC. A pointer to this function is obtained
795 * by the upper MAC via capability query.
796 *
797 * XXX-nicolas Note: this currently causes all VNIC MAC clients to
798 * receive the same MAC client handle for the same VNIC. This is ok
799 * as long as we have only one VNIC MAC client which sends and
800 * receives data, but we don't currently enforce this at the MAC layer.
801 */
802 static void *
vnic_mac_client_handle(void * vnic_arg)803 vnic_mac_client_handle(void *vnic_arg)
804 {
805 vnic_t *vnic = vnic_arg;
806
807 return (vnic->vn_mch);
808 }
809
810 /*
811 * Invoked when updating the primary MAC so that the secondary MACs are
812 * kept in sync.
813 */
814 static void
vnic_mac_secondary_update(void * vnic_arg)815 vnic_mac_secondary_update(void *vnic_arg)
816 {
817 vnic_t *vn = vnic_arg;
818 int i;
819
820 for (i = 1; i <= vn->vn_nhandles; i++) {
821 mac_secondary_dup(vn->vn_mc_handles[0], vn->vn_mc_handles[i]);
822 }
823 }
824
825 /*
826 * Return information about the specified capability.
827 */
828 /* ARGSUSED */
829 static boolean_t
vnic_m_capab_get(void * arg,mac_capab_t cap,void * cap_data)830 vnic_m_capab_get(void *arg, mac_capab_t cap, void *cap_data)
831 {
832 vnic_t *vnic = arg;
833
834 switch (cap) {
835 case MAC_CAPAB_HCKSUM: {
836 uint32_t *hcksum_txflags = cap_data;
837
838 *hcksum_txflags = vnic->vn_hcksum_txflags &
839 (HCKSUM_INET_FULL_V4 | HCKSUM_INET_FULL_V6 |
840 HCKSUM_IPHDRCKSUM | HCKSUM_INET_PARTIAL);
841 break;
842 }
843 case MAC_CAPAB_LSO: {
844 mac_capab_lso_t *cap_lso = cap_data;
845
846 if (vnic->vn_cap_lso.lso_flags == 0) {
847 return (B_FALSE);
848 }
849 *cap_lso = vnic->vn_cap_lso;
850 break;
851 }
852 case MAC_CAPAB_VNIC: {
853 mac_capab_vnic_t *vnic_capab = cap_data;
854
855 if (vnic->vn_lower_mh == NULL) {
856 /*
857 * It's an anchor VNIC, we don't have an underlying
858 * NIC and MAC client handle.
859 */
860 return (B_FALSE);
861 }
862
863 if (vnic_capab != NULL) {
864 vnic_capab->mcv_arg = vnic;
865 vnic_capab->mcv_mac_client_handle =
866 vnic_mac_client_handle;
867 vnic_capab->mcv_mac_secondary_update =
868 vnic_mac_secondary_update;
869 }
870 break;
871 }
872 case MAC_CAPAB_ANCHOR_VNIC: {
873 /* since it's an anchor VNIC we don't have lower mac handle */
874 if (vnic->vn_lower_mh == NULL) {
875 ASSERT(vnic->vn_link_id == 0);
876 return (B_TRUE);
877 }
878 return (B_FALSE);
879 }
880 case MAC_CAPAB_NO_NATIVEVLAN:
881 return (B_FALSE);
882 case MAC_CAPAB_NO_ZCOPY:
883 return (B_TRUE);
884 case MAC_CAPAB_VRRP: {
885 mac_capab_vrrp_t *vrrp_capab = cap_data;
886
887 if (vnic->vn_vrid != 0) {
888 if (vrrp_capab != NULL)
889 vrrp_capab->mcv_af = vnic->vn_af;
890 return (B_TRUE);
891 }
892 return (B_FALSE);
893 }
894 default:
895 return (B_FALSE);
896 }
897 return (B_TRUE);
898 }
899
900 /* ARGSUSED */
901 static int
vnic_m_start(void * arg)902 vnic_m_start(void *arg)
903 {
904 return (0);
905 }
906
907 /* ARGSUSED */
908 static void
vnic_m_stop(void * arg)909 vnic_m_stop(void *arg)
910 {
911 }
912
913 /* ARGSUSED */
914 static int
vnic_m_promisc(void * arg,boolean_t on)915 vnic_m_promisc(void *arg, boolean_t on)
916 {
917 return (0);
918 }
919
920 /* ARGSUSED */
921 static int
vnic_m_multicst(void * arg,boolean_t add,const uint8_t * addrp)922 vnic_m_multicst(void *arg, boolean_t add, const uint8_t *addrp)
923 {
924 return (0);
925 }
926
927 static int
vnic_m_unicst(void * arg,const uint8_t * macaddr)928 vnic_m_unicst(void *arg, const uint8_t *macaddr)
929 {
930 vnic_t *vnic = arg;
931
932 return (mac_vnic_unicast_set(vnic->vn_mch, macaddr));
933 }
934
935 static void
vnic_cleanup_secondary_macs(vnic_t * vn,int cnt)936 vnic_cleanup_secondary_macs(vnic_t *vn, int cnt)
937 {
938 int i;
939
940 /* Remove existing secondaries (primary is at 0) */
941 for (i = 1; i <= cnt; i++) {
942 mac_rx_clear(vn->vn_mc_handles[i]);
943
944 /* unicast handle might not have been set yet */
945 if (vn->vn_mu_handles[i] != NULL)
946 (void) mac_unicast_remove(vn->vn_mc_handles[i],
947 vn->vn_mu_handles[i]);
948
949 mac_secondary_cleanup(vn->vn_mc_handles[i]);
950
951 mac_client_close(vn->vn_mc_handles[i], MAC_CLOSE_FLAGS_IS_VNIC);
952
953 vn->vn_mu_handles[i] = NULL;
954 vn->vn_mc_handles[i] = NULL;
955 }
956
957 vn->vn_nhandles = 0;
958 }
959
960 /*
961 * Setup secondary MAC addresses on the vnic. Due to limitations in the mac
962 * code, each mac address must be associated with a mac_client (and the
963 * flow that goes along with the client) so we need to create those clients
964 * here.
965 */
966 static int
vnic_set_secondary_macs(vnic_t * vn,mac_secondary_addr_t * msa)967 vnic_set_secondary_macs(vnic_t *vn, mac_secondary_addr_t *msa)
968 {
969 int i, err;
970 char primary_name[MAXNAMELEN];
971
972 /* First, remove pre-existing secondaries */
973 ASSERT(vn->vn_nhandles < MPT_MAXMACADDR);
974 vnic_cleanup_secondary_macs(vn, vn->vn_nhandles);
975
976 if (msa->ms_addrcnt == (uint32_t)-1)
977 msa->ms_addrcnt = 0;
978
979 vn->vn_nhandles = msa->ms_addrcnt;
980
981 (void) dls_mgmt_get_linkinfo(vn->vn_id, primary_name, NULL, NULL, NULL);
982
983 /*
984 * Now add the new secondary MACs
985 * Recall that the primary MAC address is the first element.
986 * The secondary clients are named after the primary with their
987 * index to distinguish them.
988 */
989 for (i = 1; i <= vn->vn_nhandles; i++) {
990 uint8_t *addr;
991 mac_diag_t mac_diag;
992 char secondary_name[MAXNAMELEN];
993
994 (void) snprintf(secondary_name, sizeof (secondary_name),
995 "%s%02d", primary_name, i);
996
997 err = mac_client_open(vn->vn_lower_mh, &vn->vn_mc_handles[i],
998 secondary_name, MAC_OPEN_FLAGS_IS_VNIC);
999 if (err != 0) {
1000 /* Remove any that we successfully added */
1001 vnic_cleanup_secondary_macs(vn, --i);
1002 return (err);
1003 }
1004
1005 /*
1006 * Assign a MAC address to the VNIC
1007 *
1008 * Normally this would be done with vnic_unicast_add but since
1009 * we know these are fixed adddresses, and since we need to
1010 * save this in the proper array slot, we bypass that function
1011 * and go direct.
1012 */
1013 addr = msa->ms_addrs[i - 1];
1014 err = mac_unicast_add(vn->vn_mc_handles[i], addr, 0,
1015 &vn->vn_mu_handles[i], vn->vn_vid, &mac_diag);
1016 if (err != 0) {
1017 /* Remove any that we successfully added */
1018 vnic_cleanup_secondary_macs(vn, i);
1019 return (err);
1020 }
1021
1022 /*
1023 * Setup the secondary the same way as the primary (i.e.
1024 * receiver function/argument (e.g. i_dls_link_rx, mac_pkt_drop,
1025 * etc.), the promisc list, and the resource controls).
1026 */
1027 mac_secondary_dup(vn->vn_mc_handles[0], vn->vn_mc_handles[i]);
1028 }
1029
1030 return (0);
1031 }
1032
1033 static int
vnic_get_secondary_macs(vnic_t * vn,uint_t pr_valsize,void * pr_val)1034 vnic_get_secondary_macs(vnic_t *vn, uint_t pr_valsize, void *pr_val)
1035 {
1036 int i;
1037 mac_secondary_addr_t msa;
1038
1039 if (pr_valsize < sizeof (msa))
1040 return (EINVAL);
1041
1042 /* Get existing addresses (primary is at 0) */
1043 ASSERT(vn->vn_nhandles < MPT_MAXMACADDR);
1044 for (i = 1; i <= vn->vn_nhandles; i++) {
1045 ASSERT(vn->vn_mc_handles[i] != NULL);
1046 mac_unicast_secondary_get(vn->vn_mc_handles[i],
1047 msa.ms_addrs[i - 1]);
1048 }
1049 msa.ms_addrcnt = vn->vn_nhandles;
1050
1051 bcopy(&msa, pr_val, sizeof (msa));
1052 return (0);
1053 }
1054
1055 /*
1056 * Callback functions for set/get of properties
1057 */
1058 /*ARGSUSED*/
1059 static int
vnic_m_setprop(void * m_driver,const char * pr_name,mac_prop_id_t pr_num,uint_t pr_valsize,const void * pr_val)1060 vnic_m_setprop(void *m_driver, const char *pr_name, mac_prop_id_t pr_num,
1061 uint_t pr_valsize, const void *pr_val)
1062 {
1063 int err = 0;
1064 vnic_t *vn = m_driver;
1065
1066 switch (pr_num) {
1067 case MAC_PROP_MTU: {
1068 uint32_t mtu;
1069
1070 if (pr_valsize < sizeof (mtu)) {
1071 err = EINVAL;
1072 break;
1073 }
1074 bcopy(pr_val, &mtu, sizeof (mtu));
1075
1076 if (vn->vn_link_id == DATALINK_INVALID_LINKID) {
1077 if (mtu < ANCHOR_VNIC_MIN_MTU ||
1078 mtu > ANCHOR_VNIC_MAX_MTU) {
1079 err = EINVAL;
1080 break;
1081 }
1082 } else {
1083 err = mac_mtu_add(vn->vn_lower_mh, &mtu, B_FALSE);
1084 /*
1085 * If it's not supported to set a value here, translate
1086 * that to EINVAL, so user land gets a better idea of
1087 * what went wrong. This realistically means that they
1088 * violated the output of prop info.
1089 */
1090 if (err == ENOTSUP)
1091 err = EINVAL;
1092 if (err != 0)
1093 break;
1094 VERIFY(mac_mtu_remove(vn->vn_lower_mh,
1095 vn->vn_mtu) == 0);
1096 }
1097 vn->vn_mtu = mtu;
1098 err = mac_maxsdu_update(vn->vn_mh, mtu);
1099 break;
1100 }
1101 case MAC_PROP_VN_PROMISC_FILTERED: {
1102 boolean_t filtered;
1103
1104 if (pr_valsize < sizeof (filtered)) {
1105 err = EINVAL;
1106 break;
1107 }
1108
1109 bcopy(pr_val, &filtered, sizeof (filtered));
1110 mac_set_promisc_filtered(vn->vn_mch, filtered);
1111 break;
1112 }
1113 case MAC_PROP_SECONDARY_ADDRS: {
1114 mac_secondary_addr_t msa;
1115
1116 bcopy(pr_val, &msa, sizeof (msa));
1117 err = vnic_set_secondary_macs(vn, &msa);
1118 break;
1119 }
1120 case MAC_PROP_PRIVATE: {
1121 if (vn->vn_link_id != DATALINK_INVALID_LINKID ||
1122 strcmp(pr_name, "_linkstate") != 0) {
1123 err = ENOTSUP;
1124 break;
1125 }
1126
1127 if (strcmp(pr_val, "up") == 0) {
1128 vn->vn_ls = LINK_STATE_UP;
1129 } else if (strcmp(pr_val, "down") == 0) {
1130 vn->vn_ls = LINK_STATE_DOWN;
1131 } else if (strcmp(pr_val, "unknown") == 0) {
1132 vn->vn_ls = LINK_STATE_UNKNOWN;
1133 } else {
1134 return (EINVAL);
1135 }
1136 mac_link_update(vn->vn_mh, vn->vn_ls);
1137 break;
1138 }
1139 default:
1140 err = ENOTSUP;
1141 break;
1142 }
1143 return (err);
1144 }
1145
1146 /* ARGSUSED */
1147 static int
vnic_m_getprop(void * arg,const char * pr_name,mac_prop_id_t pr_num,uint_t pr_valsize,void * pr_val)1148 vnic_m_getprop(void *arg, const char *pr_name, mac_prop_id_t pr_num,
1149 uint_t pr_valsize, void *pr_val)
1150 {
1151 vnic_t *vn = arg;
1152 int ret = 0;
1153 boolean_t out;
1154
1155 switch (pr_num) {
1156 case MAC_PROP_VN_PROMISC_FILTERED:
1157 out = mac_get_promisc_filtered(vn->vn_mch);
1158 ASSERT(pr_valsize >= sizeof (boolean_t));
1159 bcopy(&out, pr_val, sizeof (boolean_t));
1160 break;
1161 case MAC_PROP_SECONDARY_ADDRS:
1162 ret = vnic_get_secondary_macs(vn, pr_valsize, pr_val);
1163 break;
1164 case MAC_PROP_PRIVATE:
1165 if (vn->vn_link_id != DATALINK_INVALID_LINKID) {
1166 ret = EINVAL;
1167 break;
1168 }
1169
1170 if (strcmp(pr_name, "_linkstate") != 0) {
1171 ret = EINVAL;
1172 break;
1173 }
1174 if (vn->vn_ls == LINK_STATE_UP) {
1175 (void) sprintf(pr_val, "up");
1176 } else if (vn->vn_ls == LINK_STATE_DOWN) {
1177 (void) sprintf(pr_val, "down");
1178 } else {
1179 (void) sprintf(pr_val, "unknown");
1180 }
1181 break;
1182 default:
1183 ret = ENOTSUP;
1184 break;
1185 }
1186
1187 return (ret);
1188 }
1189
1190 /* ARGSUSED */
1191 static void
vnic_m_propinfo(void * m_driver,const char * pr_name,mac_prop_id_t pr_num,mac_prop_info_handle_t prh)1192 vnic_m_propinfo(void *m_driver, const char *pr_name,
1193 mac_prop_id_t pr_num, mac_prop_info_handle_t prh)
1194 {
1195 vnic_t *vn = m_driver;
1196
1197 switch (pr_num) {
1198 case MAC_PROP_MTU:
1199 if (vn->vn_link_id == DATALINK_INVALID_LINKID) {
1200 mac_prop_info_set_range_uint32(prh,
1201 ANCHOR_VNIC_MIN_MTU, ANCHOR_VNIC_MAX_MTU);
1202 } else {
1203 uint32_t max;
1204 mac_perim_handle_t mph;
1205 mac_propval_range_t range;
1206
1207 /*
1208 * The valid range for a VNIC's MTU is the minimum that
1209 * the device supports and the current value of the
1210 * device. A VNIC cannot increase the current MTU of the
1211 * device. Therefore we need to get the range from the
1212 * propinfo endpoint and current mtu from the
1213 * traditional property endpoint.
1214 */
1215 mac_perim_enter_by_mh(vn->vn_lower_mh, &mph);
1216 if (mac_get_prop(vn->vn_lower_mh, MAC_PROP_MTU, "mtu",
1217 &max, sizeof (uint32_t)) != 0) {
1218 mac_perim_exit(mph);
1219 return;
1220 }
1221
1222 range.mpr_count = 1;
1223 if (mac_prop_info(vn->vn_lower_mh, MAC_PROP_MTU, "mtu",
1224 NULL, 0, &range, NULL) != 0) {
1225 mac_perim_exit(mph);
1226 return;
1227 }
1228
1229 mac_prop_info_set_default_uint32(prh, max);
1230 mac_prop_info_set_range_uint32(prh,
1231 range.mpr_range_uint32[0].mpur_min, max);
1232 mac_perim_exit(mph);
1233 }
1234 break;
1235 case MAC_PROP_PRIVATE:
1236 if (vn->vn_link_id != DATALINK_INVALID_LINKID)
1237 break;
1238
1239 if (strcmp(pr_name, "_linkstate") == 0) {
1240 char buf[16];
1241
1242 mac_prop_info_set_perm(prh, MAC_PROP_PERM_RW);
1243 (void) sprintf(buf, "unknown");
1244 mac_prop_info_set_default_str(prh, buf);
1245 }
1246 break;
1247 }
1248 }
1249
1250
1251 int
vnic_info(vnic_info_t * info,cred_t * credp)1252 vnic_info(vnic_info_t *info, cred_t *credp)
1253 {
1254 vnic_t *vnic;
1255 int err;
1256
1257 /* Make sure that the VNIC link is visible from the caller's zone. */
1258 if (!dls_devnet_islinkvisible(info->vn_vnic_id, crgetzoneid(credp)))
1259 return (ENOENT);
1260
1261 rw_enter(&vnic_lock, RW_WRITER);
1262
1263 err = mod_hash_find(vnic_hash, VNIC_HASH_KEY(info->vn_vnic_id),
1264 (mod_hash_val_t *)&vnic);
1265 if (err != 0) {
1266 rw_exit(&vnic_lock);
1267 return (ENOENT);
1268 }
1269
1270 info->vn_link_id = vnic->vn_link_id;
1271 info->vn_mac_addr_type = vnic->vn_addr_type;
1272 info->vn_mac_len = vnic->vn_addr_len;
1273 bcopy(vnic->vn_addr, info->vn_mac_addr, MAXMACADDRLEN);
1274 info->vn_mac_slot = vnic->vn_slot_id;
1275 info->vn_mac_prefix_len = 0;
1276 info->vn_vid = vnic->vn_vid;
1277 info->vn_force = vnic->vn_force;
1278 info->vn_vrid = vnic->vn_vrid;
1279 info->vn_af = vnic->vn_af;
1280
1281 bzero(&info->vn_resource_props, sizeof (mac_resource_props_t));
1282 if (vnic->vn_mch != NULL)
1283 mac_client_get_resources(vnic->vn_mch,
1284 &info->vn_resource_props);
1285
1286 rw_exit(&vnic_lock);
1287 return (0);
1288 }
1289
1290 static void
vnic_notify_cb(void * arg,mac_notify_type_t type)1291 vnic_notify_cb(void *arg, mac_notify_type_t type)
1292 {
1293 vnic_t *vnic = arg;
1294
1295 /*
1296 * Do not deliver notifications if the vnic is not fully initialized
1297 * or is in process of being torn down.
1298 */
1299 if (!vnic->vn_enabled)
1300 return;
1301
1302 switch (type) {
1303 case MAC_NOTE_UNICST:
1304 /*
1305 * Only the VLAN VNIC needs to be notified with primary MAC
1306 * address change.
1307 */
1308 if (vnic->vn_addr_type != VNIC_MAC_ADDR_TYPE_PRIMARY)
1309 return;
1310
1311 /* the unicast MAC address value */
1312 mac_unicast_primary_get(vnic->vn_lower_mh, vnic->vn_addr);
1313
1314 /* notify its upper layer MAC about MAC address change */
1315 mac_unicst_update(vnic->vn_mh, (const uint8_t *)vnic->vn_addr);
1316 break;
1317
1318 case MAC_NOTE_LINK:
1319 vnic->vn_ls = mac_client_stat_get(vnic->vn_mch,
1320 MAC_STAT_LINK_STATE);
1321 mac_link_update(vnic->vn_mh, vnic->vn_ls);
1322 break;
1323
1324 default:
1325 break;
1326 }
1327 }
1328