xref: /illumos-gate/usr/src/lib/libdladm/common/libdlvnic.c (revision fc910014e8a32a65612105835a10995f2c13d942)
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) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23  * Copyright 2015, Joyent Inc.
24  * Copyright 2020 OmniOS Community Edition (OmniOSce) Association.
25  */
26 
27 #include <stdio.h>
28 #include <sys/types.h>
29 #include <sys/stat.h>
30 #include <string.h>
31 #include <fcntl.h>
32 #include <unistd.h>
33 #include <stropts.h>
34 #include <stdlib.h>
35 #include <errno.h>
36 #include <strings.h>
37 #include <libintl.h>
38 #include <net/if_types.h>
39 #include <net/if_dl.h>
40 #include <sys/dld.h>
41 #include <libdladm_impl.h>
42 #include <libvrrpadm.h>
43 #include <libdllink.h>
44 #include <libdlbridge.h>
45 #include <libdlvnic.h>
46 
47 /*
48  * VNIC administration library.
49  */
50 
51 /*
52  * Default random MAC address prefix (locally administered).
53  */
54 static char dladm_vnic_def_prefix[] = {0x02, 0x08, 0x20};
55 
56 static dladm_status_t	dladm_vnic_persist_conf(dladm_handle_t,
57 			    const char *name, dladm_vnic_attr_t *,
58 			    datalink_class_t);
59 static const char	*dladm_vnic_macaddr2str(const uchar_t *, char *);
60 static dladm_status_t	dladm_vnic_str2macaddr(const char *, uchar_t *);
61 
62 /*
63  * Convert a diagnostic returned by the kernel into a dladm_status_t.
64  */
65 static dladm_status_t
66 dladm_vnic_diag2status(vnic_ioc_diag_t ioc_diag)
67 {
68 	switch (ioc_diag) {
69 	case VNIC_IOC_DIAG_NONE:
70 		return (DLADM_STATUS_OK);
71 	case VNIC_IOC_DIAG_MACADDRLEN_INVALID:
72 		return (DLADM_STATUS_INVALIDMACADDRLEN);
73 	case VNIC_IOC_DIAG_MACADDR_NIC:
74 		return (DLADM_STATUS_INVALIDMACADDRNIC);
75 	case VNIC_IOC_DIAG_MACADDR_INUSE:
76 		return (DLADM_STATUS_INVALIDMACADDRINUSE);
77 	case VNIC_IOC_DIAG_MACFACTORYSLOTINVALID:
78 		return (DLADM_STATUS_MACFACTORYSLOTINVALID);
79 	case VNIC_IOC_DIAG_MACFACTORYSLOTUSED:
80 		return (DLADM_STATUS_MACFACTORYSLOTUSED);
81 	case VNIC_IOC_DIAG_MACFACTORYSLOTALLUSED:
82 		return (DLADM_STATUS_MACFACTORYSLOTALLUSED);
83 	case VNIC_IOC_DIAG_MACFACTORYNOTSUP:
84 		return (DLADM_STATUS_MACFACTORYNOTSUP);
85 	case VNIC_IOC_DIAG_MACPREFIX_INVALID:
86 		return (DLADM_STATUS_INVALIDMACPREFIX);
87 	case VNIC_IOC_DIAG_MACPREFIXLEN_INVALID:
88 		return (DLADM_STATUS_INVALIDMACPREFIXLEN);
89 	case VNIC_IOC_DIAG_MACMARGIN_INVALID:
90 		return (DLADM_STATUS_INVALID_MACMARGIN);
91 	case VNIC_IOC_DIAG_NO_HWRINGS:
92 		return (DLADM_STATUS_NO_HWRINGS);
93 	case VNIC_IOC_DIAG_MACADDR_INVALID:
94 		return (DLADM_STATUS_INVALIDMACADDR);
95 	case VNIC_IOC_DIAG_MACMTU_INVALID:
96 		return (DLADM_STATUS_INVALID_MTU);
97 	default:
98 		return (DLADM_STATUS_FAILED);
99 	}
100 }
101 
102 /*
103  * Send a create command to the VNIC driver.
104  */
105 dladm_status_t
106 i_dladm_vnic_create_sys(dladm_handle_t handle, dladm_vnic_attr_t *attr)
107 {
108 	int rc;
109 	vnic_ioc_create_t ioc;
110 	dladm_status_t status = DLADM_STATUS_OK;
111 
112 	bzero(&ioc, sizeof (ioc));
113 	ioc.vc_vnic_id = attr->va_vnic_id;
114 	ioc.vc_link_id = attr->va_link_id;
115 	ioc.vc_mac_addr_type = attr->va_mac_addr_type;
116 	ioc.vc_mac_len = attr->va_mac_len;
117 	ioc.vc_mac_slot = attr->va_mac_slot;
118 	ioc.vc_mac_prefix_len = attr->va_mac_prefix_len;
119 	ioc.vc_vid = attr->va_vid;
120 	ioc.vc_vrid = attr->va_vrid;
121 	ioc.vc_af = attr->va_af;
122 	ioc.vc_flags = attr->va_force ? VNIC_IOC_CREATE_FORCE : 0;
123 
124 	if (attr->va_mac_len > 0 || ioc.vc_mac_prefix_len > 0)
125 		bcopy(attr->va_mac_addr, ioc.vc_mac_addr, MAXMACADDRLEN);
126 	bcopy(&attr->va_resource_props, &ioc.vc_resource_props,
127 	    sizeof (mac_resource_props_t));
128 	if (attr->va_link_id == DATALINK_INVALID_LINKID)
129 		ioc.vc_flags |= VNIC_IOC_CREATE_ANCHOR;
130 
131 	rc = ioctl(dladm_dld_fd(handle), VNIC_IOC_CREATE, &ioc);
132 	if (rc < 0)
133 		status = dladm_errno2status(errno);
134 
135 	if (status != DLADM_STATUS_OK) {
136 		if (ioc.vc_diag != VNIC_IOC_DIAG_NONE)
137 			status = dladm_vnic_diag2status(ioc.vc_diag);
138 	}
139 	if (status != DLADM_STATUS_OK)
140 		return (status);
141 
142 	attr->va_mac_addr_type = ioc.vc_mac_addr_type;
143 	switch (ioc.vc_mac_addr_type) {
144 	case VNIC_MAC_ADDR_TYPE_FACTORY:
145 		attr->va_mac_slot = ioc.vc_mac_slot;
146 		break;
147 	case VNIC_MAC_ADDR_TYPE_RANDOM:
148 		bcopy(ioc.vc_mac_addr, attr->va_mac_addr, MAXMACADDRLEN);
149 		attr->va_mac_len = ioc.vc_mac_len;
150 		break;
151 	default:
152 		break;
153 	}
154 	return (status);
155 }
156 
157 /*
158  * Get the configuration information of the given VNIC.
159  */
160 static dladm_status_t
161 i_dladm_vnic_info_active(dladm_handle_t handle, datalink_id_t linkid,
162     dladm_vnic_attr_t *attrp)
163 {
164 	vnic_ioc_info_t ioc;
165 	vnic_info_t *vnic;
166 	int rc;
167 	dladm_status_t status = DLADM_STATUS_OK;
168 
169 	bzero(&ioc, sizeof (ioc));
170 	vnic = &ioc.vi_info;
171 	vnic->vn_vnic_id = linkid;
172 
173 	rc = ioctl(dladm_dld_fd(handle), VNIC_IOC_INFO, &ioc);
174 	if (rc != 0) {
175 		status = dladm_errno2status(errno);
176 		goto bail;
177 	}
178 
179 	attrp->va_vnic_id = vnic->vn_vnic_id;
180 	attrp->va_link_id = vnic->vn_link_id;
181 	attrp->va_mac_addr_type = vnic->vn_mac_addr_type;
182 	bcopy(vnic->vn_mac_addr, attrp->va_mac_addr, MAXMACADDRLEN);
183 	attrp->va_mac_len = vnic->vn_mac_len;
184 	attrp->va_mac_slot = vnic->vn_mac_slot;
185 	attrp->va_mac_prefix_len = vnic->vn_mac_prefix_len;
186 	attrp->va_vid = vnic->vn_vid;
187 	attrp->va_vrid = vnic->vn_vrid;
188 	attrp->va_af = vnic->vn_af;
189 	attrp->va_force = vnic->vn_force;
190 
191 bail:
192 	return (status);
193 }
194 
195 static dladm_status_t
196 i_dladm_vnic_info_persist(dladm_handle_t handle, datalink_id_t linkid,
197     dladm_vnic_attr_t *attrp)
198 {
199 	dladm_conf_t conf;
200 	dladm_status_t status;
201 	char macstr[ETHERADDRL * 3];
202 	char linkover[MAXLINKNAMELEN];
203 	uint64_t u64;
204 	datalink_class_t class;
205 
206 	attrp->va_vnic_id = linkid;
207 	if ((status = dladm_getsnap_conf(handle, linkid, &conf)) !=
208 	    DLADM_STATUS_OK)
209 		return (status);
210 
211 	status = dladm_get_conf_field(handle, conf, FLINKOVER, linkover,
212 	    sizeof (linkover));
213 	if (status != DLADM_STATUS_OK) {
214 		/*
215 		 * This isn't an error, etherstubs don't have a FLINKOVER
216 		 * property.
217 		 */
218 		attrp->va_link_id = DATALINK_INVALID_LINKID;
219 	} else {
220 		if ((status = dladm_name2info(handle, linkover,
221 		    &attrp->va_link_id, NULL, NULL, NULL)) != DLADM_STATUS_OK)
222 			goto done;
223 	}
224 
225 	if ((status = dladm_datalink_id2info(handle, linkid, NULL, &class,
226 	    NULL, NULL, 0)) != DLADM_STATUS_OK)
227 		goto done;
228 
229 	if (class == DATALINK_CLASS_VLAN) {
230 		if (attrp->va_link_id == DATALINK_INVALID_LINKID) {
231 			status = DLADM_STATUS_BADARG;
232 			goto done;
233 		}
234 		attrp->va_mac_addr_type = VNIC_MAC_ADDR_TYPE_PRIMARY;
235 		attrp->va_mac_len = 0;
236 	} else {
237 		status = dladm_get_conf_field(handle, conf, FMADDRTYPE, &u64,
238 		    sizeof (u64));
239 		if (status != DLADM_STATUS_OK)
240 			goto done;
241 
242 		attrp->va_mac_addr_type = (vnic_mac_addr_type_t)u64;
243 
244 		if ((status = dladm_get_conf_field(handle, conf, FVRID,
245 		    &u64, sizeof (u64))) != DLADM_STATUS_OK) {
246 			attrp->va_vrid = VRRP_VRID_NONE;
247 		} else {
248 			attrp->va_vrid = (vrid_t)u64;
249 		}
250 
251 		if ((status = dladm_get_conf_field(handle, conf, FVRAF,
252 		    &u64, sizeof (u64))) != DLADM_STATUS_OK) {
253 			attrp->va_af = AF_UNSPEC;
254 		} else {
255 			attrp->va_af = (int)u64;
256 		}
257 
258 		status = dladm_get_conf_field(handle, conf, FMADDRLEN, &u64,
259 		    sizeof (u64));
260 		attrp->va_mac_len = ((status == DLADM_STATUS_OK) ?
261 		    (uint_t)u64 : ETHERADDRL);
262 
263 		status = dladm_get_conf_field(handle, conf, FMADDRSLOT, &u64,
264 		    sizeof (u64));
265 		attrp->va_mac_slot = ((status == DLADM_STATUS_OK) ?
266 		    (int)u64 : -1);
267 
268 		status = dladm_get_conf_field(handle, conf, FMADDRPREFIXLEN,
269 		    &u64, sizeof (u64));
270 		attrp->va_mac_prefix_len = ((status == DLADM_STATUS_OK) ?
271 		    (uint_t)u64 : sizeof (dladm_vnic_def_prefix));
272 
273 		status = dladm_get_conf_field(handle, conf, FMACADDR, macstr,
274 		    sizeof (macstr));
275 		if (status != DLADM_STATUS_OK)
276 			goto done;
277 
278 		status = dladm_vnic_str2macaddr(macstr, attrp->va_mac_addr);
279 		if (status != DLADM_STATUS_OK)
280 			goto done;
281 	}
282 
283 	status = dladm_get_conf_field(handle, conf, FVLANID, &u64,
284 	    sizeof (u64));
285 	attrp->va_vid = ((status == DLADM_STATUS_OK) ?  (uint16_t)u64 : 0);
286 
287 	status = DLADM_STATUS_OK;
288 done:
289 	dladm_destroy_conf(handle, conf);
290 	return (status);
291 }
292 
293 dladm_status_t
294 dladm_vnic_info(dladm_handle_t handle, datalink_id_t linkid,
295     dladm_vnic_attr_t *attrp, uint32_t flags)
296 {
297 	if (flags == DLADM_OPT_ACTIVE)
298 		return (i_dladm_vnic_info_active(handle, linkid, attrp));
299 	else if (flags == DLADM_OPT_PERSIST)
300 		return (i_dladm_vnic_info_persist(handle, linkid, attrp));
301 	else
302 		return (DLADM_STATUS_BADARG);
303 }
304 
305 /*
306  * Remove a VNIC from the kernel.
307  */
308 dladm_status_t
309 i_dladm_vnic_delete_sys(dladm_handle_t handle, datalink_id_t linkid)
310 {
311 	vnic_ioc_delete_t ioc;
312 	dladm_status_t status = DLADM_STATUS_OK;
313 	int rc;
314 
315 	ioc.vd_vnic_id = linkid;
316 
317 	rc = ioctl(dladm_dld_fd(handle), VNIC_IOC_DELETE, &ioc);
318 	if (rc < 0)
319 		status = dladm_errno2status(errno);
320 
321 	return (status);
322 }
323 
324 /*
325  * Convert between MAC address types and their string representations.
326  */
327 
328 typedef struct dladm_vnic_addr_type_s {
329 	const char		*va_str;
330 	vnic_mac_addr_type_t	va_type;
331 } dladm_vnic_addr_type_t;
332 
333 static dladm_vnic_addr_type_t addr_types[] = {
334 	{"fixed", VNIC_MAC_ADDR_TYPE_FIXED},
335 	{"random", VNIC_MAC_ADDR_TYPE_RANDOM},
336 	{"factory", VNIC_MAC_ADDR_TYPE_FACTORY},
337 	{"auto", VNIC_MAC_ADDR_TYPE_AUTO},
338 	{"fixed", VNIC_MAC_ADDR_TYPE_PRIMARY},
339 	{"vrrp", VNIC_MAC_ADDR_TYPE_VRID}
340 };
341 
342 #define	NADDR_TYPES (sizeof (addr_types) / sizeof (dladm_vnic_addr_type_t))
343 
344 static const char *
345 dladm_vnic_macaddrtype2str(vnic_mac_addr_type_t type)
346 {
347 	uint_t i;
348 
349 	for (i = 0; i < NADDR_TYPES; i++) {
350 		if (type == addr_types[i].va_type)
351 			return (addr_types[i].va_str);
352 	}
353 	return (NULL);
354 }
355 
356 dladm_status_t
357 dladm_vnic_str2macaddrtype(const char *str, vnic_mac_addr_type_t *val)
358 {
359 	uint_t i;
360 	dladm_vnic_addr_type_t *type;
361 
362 	for (i = 0; i < NADDR_TYPES; i++) {
363 		type = &addr_types[i];
364 		if (strncmp(str, type->va_str, strlen(type->va_str)) == 0) {
365 			*val = type->va_type;
366 			return (DLADM_STATUS_OK);
367 		}
368 	}
369 	return (DLADM_STATUS_BADARG);
370 }
371 
372 /*
373  * Based on the VRRP specification, the virtual router MAC address associated
374  * with a virtual router is an IEEE 802 MAC address in the following format:
375  *
376  * IPv4 case: 00-00-5E-00-01-{VRID} (in hex in internet standard bit-order)
377  *
378  * IPv6 case: 00-00-5E-00-02-{VRID} (in hex in internet standard bit-order)
379  */
380 static dladm_status_t
381 i_dladm_vnic_vrrp_mac(vrid_t vrid, int af, uint8_t *mac, uint_t maclen)
382 {
383 	if (maclen < ETHERADDRL || vrid < VRRP_VRID_MIN ||
384 	    vrid > VRRP_VRID_MAX || (af != AF_INET && af != AF_INET6)) {
385 		return (DLADM_STATUS_BADARG);
386 	}
387 
388 	mac[0] = mac[1] = mac[3] = 0x0;
389 	mac[2] = 0x5e;
390 	mac[4] = (af == AF_INET) ? 0x01 : 0x02;
391 	mac[5] = vrid;
392 	return (DLADM_STATUS_OK);
393 }
394 
395 /*
396  * Create a new VNIC / VLAN. Update the configuration file and bring it up.
397  * The "vrid" and "af" arguments are only required if the mac_addr_type is
398  * VNIC_MAC_ADDR_TYPE_VRID. In that case, the MAC address will be caculated
399  * based on the above algorithm.
400  */
401 dladm_status_t
402 dladm_vnic_create(dladm_handle_t handle, const char *vnic, datalink_id_t linkid,
403     vnic_mac_addr_type_t mac_addr_type, uchar_t *mac_addr, uint_t mac_len,
404     int *mac_slot, uint_t mac_prefix_len, uint16_t vid, vrid_t vrid,
405     int af, datalink_id_t *vnic_id_out, dladm_arg_list_t *proplist,
406     dladm_errlist_t *errs, uint32_t flags)
407 {
408 	dladm_vnic_attr_t attr;
409 	datalink_id_t vnic_id;
410 	datalink_class_t class, pclass;
411 	uint32_t media = DL_ETHER;
412 	uint32_t link_flags;
413 	char name[MAXLINKNAMELEN];
414 	uchar_t tmp_addr[MAXMACADDRLEN];
415 	dladm_status_t status;
416 	boolean_t is_vlan;
417 	boolean_t is_etherstub;
418 	uint_t i;
419 	boolean_t vnic_created = B_FALSE;
420 	boolean_t conf_set = B_FALSE;
421 
422 	/*
423 	 * Sanity test arguments.
424 	 */
425 	if ((flags & DLADM_OPT_ACTIVE) == 0)
426 		return (DLADM_STATUS_NOTSUP);
427 
428 	/*
429 	 * It's an anchor VNIC - linkid must be set to DATALINK_INVALID_LINKID
430 	 * and the VLAN id must be 0
431 	 */
432 	if ((flags & DLADM_OPT_ANCHOR) != 0 &&
433 	    (linkid != DATALINK_INVALID_LINKID || vid != 0)) {
434 		return (DLADM_STATUS_BADARG);
435 	}
436 
437 	is_vlan = ((flags & DLADM_OPT_VLAN) != 0);
438 	if (is_vlan && ((vid < 1 || vid > 4094)))
439 		return (DLADM_STATUS_VIDINVAL);
440 
441 	is_etherstub = (linkid == DATALINK_INVALID_LINKID);
442 
443 	if (!dladm_vnic_macaddrtype2str(mac_addr_type))
444 		return (DLADM_STATUS_INVALIDMACADDRTYPE);
445 
446 	if (!is_etherstub) {
447 		if ((status = dladm_datalink_id2info(handle, linkid,
448 		    &link_flags, &pclass, &media, NULL, 0)) != DLADM_STATUS_OK)
449 			return (status);
450 
451 		/* Disallow persistent objects on top of temporary ones */
452 		if ((flags & DLADM_OPT_PERSIST) != 0 &&
453 		    (link_flags & DLMGMT_PERSIST) == 0)
454 			return (DLADM_STATUS_PERSIST_ON_TEMP);
455 
456 		/* Links cannot be created on top of these object types */
457 		if (pclass == DATALINK_CLASS_VNIC ||
458 		    pclass == DATALINK_CLASS_VLAN)
459 			return (DLADM_STATUS_BADARG);
460 	}
461 
462 	/*
463 	 * Only VRRP VNIC need VRID and address family specified.
464 	 */
465 	if (mac_addr_type != VNIC_MAC_ADDR_TYPE_VRID &&
466 	    (af != AF_UNSPEC || vrid != VRRP_VRID_NONE)) {
467 		return (DLADM_STATUS_BADARG);
468 	}
469 
470 	/*
471 	 * If a random address might be generated, but no prefix
472 	 * was specified by the caller, use the default MAC address
473 	 * prefix.
474 	 */
475 	if ((mac_addr_type == VNIC_MAC_ADDR_TYPE_RANDOM ||
476 	    mac_addr_type == VNIC_MAC_ADDR_TYPE_AUTO) &&
477 	    mac_prefix_len == 0) {
478 		mac_prefix_len = sizeof (dladm_vnic_def_prefix);
479 		mac_addr = tmp_addr;
480 		bcopy(dladm_vnic_def_prefix, mac_addr, mac_prefix_len);
481 	}
482 
483 	/*
484 	 * If this is a VRRP VNIC, generate its MAC address using the given
485 	 * VRID and address family.
486 	 */
487 	if (mac_addr_type == VNIC_MAC_ADDR_TYPE_VRID) {
488 		/*
489 		 * VRRP VNICs must be created over ethernet data-links.
490 		 */
491 		if (vrid < VRRP_VRID_MIN || vrid > VRRP_VRID_MAX ||
492 		    (af != AF_INET && af != AF_INET6) || mac_addr != NULL ||
493 		    mac_len != 0 || mac_prefix_len != 0 ||
494 		    (mac_slot != NULL && *mac_slot != -1) || is_etherstub ||
495 		    media != DL_ETHER) {
496 			return (DLADM_STATUS_BADARG);
497 		}
498 		mac_len = ETHERADDRL;
499 		mac_addr = tmp_addr;
500 		status = i_dladm_vnic_vrrp_mac(vrid, af, mac_addr, mac_len);
501 		if (status != DLADM_STATUS_OK)
502 			return (status);
503 	}
504 
505 	if (mac_len > MAXMACADDRLEN)
506 		return (DLADM_STATUS_INVALIDMACADDRLEN);
507 
508 	if (vnic == NULL) {
509 		flags |= DLADM_OPT_PREFIX;
510 		(void) strlcpy(name, "vnic", sizeof (name));
511 	} else {
512 		(void) strlcpy(name, vnic, sizeof (name));
513 	}
514 
515 	class = is_vlan ? DATALINK_CLASS_VLAN :
516 	    (is_etherstub ? DATALINK_CLASS_ETHERSTUB : DATALINK_CLASS_VNIC);
517 	if ((status = dladm_create_datalink_id(handle, name, class,
518 	    media, flags, &vnic_id)) != DLADM_STATUS_OK)
519 		return (status);
520 
521 	if ((flags & DLADM_OPT_PREFIX) != 0) {
522 		(void) snprintf(name + 4, sizeof (name), "%llu", vnic_id);
523 		flags &= ~DLADM_OPT_PREFIX;
524 	}
525 
526 	bzero(&attr, sizeof (attr));
527 
528 	/* Extract resource_ctl and cpu_list from proplist */
529 	if (proplist != NULL) {
530 		status = dladm_link_proplist_extract(handle, proplist,
531 		    &attr.va_resource_props, 0);
532 		if (status != DLADM_STATUS_OK)
533 			goto done;
534 	}
535 
536 	attr.va_vnic_id = vnic_id;
537 	attr.va_link_id = linkid;
538 	attr.va_mac_addr_type = mac_addr_type;
539 	attr.va_mac_len = mac_len;
540 	if (mac_slot != NULL)
541 		attr.va_mac_slot = *mac_slot;
542 	if (mac_len > 0)
543 		bcopy(mac_addr, attr.va_mac_addr, mac_len);
544 	else if (mac_prefix_len > 0)
545 		bcopy(mac_addr, attr.va_mac_addr, mac_prefix_len);
546 	attr.va_mac_prefix_len = mac_prefix_len;
547 	attr.va_vid = vid;
548 	attr.va_vrid = vrid;
549 	attr.va_af = af;
550 	attr.va_force = (flags & DLADM_OPT_FORCE) != 0;
551 
552 	status = i_dladm_vnic_create_sys(handle, &attr);
553 	if (status != DLADM_STATUS_OK) {
554 		if (!is_etherstub && pclass == DATALINK_CLASS_OVERLAY &&
555 		    status == DLADM_STATUS_ADDRNOTAVAIL) {
556 			char errmsg[DLADM_STRSIZE];
557 			(void) dladm_errlist_append(errs,
558 			    "failed to start overlay device; "
559 			    "could not open underlay socket: %s",
560 			    dladm_status2str(status, errmsg));
561 		}
562 		goto done;
563 	}
564 	vnic_created = B_TRUE;
565 
566 	/* Save vnic configuration and its properties */
567 	if (!(flags & DLADM_OPT_PERSIST))
568 		goto done;
569 
570 	status = dladm_vnic_persist_conf(handle, name, &attr, class);
571 	if (status != DLADM_STATUS_OK)
572 		goto done;
573 	conf_set = B_TRUE;
574 
575 	if (proplist != NULL) {
576 		for (i = 0; i < proplist->al_count; i++) {
577 			dladm_arg_info_t	*aip = &proplist->al_info[i];
578 
579 			status = dladm_set_linkprop(handle, vnic_id,
580 			    aip->ai_name, aip->ai_val, aip->ai_count,
581 			    DLADM_OPT_PERSIST);
582 			if (status != DLADM_STATUS_OK) {
583 				char	errmsg[DLADM_STRSIZE];
584 				(void) dladm_errlist_append(errs,
585 				    "failed to set property %s: %s",
586 				    aip->ai_name,
587 				    dladm_status2str(status, errmsg));
588 				break;
589 			}
590 		}
591 	}
592 
593 done:
594 	if (status != DLADM_STATUS_OK) {
595 		if (conf_set)
596 			(void) dladm_remove_conf(handle, vnic_id);
597 		if (vnic_created)
598 			(void) i_dladm_vnic_delete_sys(handle, vnic_id);
599 		(void) dladm_destroy_datalink_id(handle, vnic_id, flags);
600 	} else {
601 		if (vnic_id_out != NULL)
602 			*vnic_id_out = vnic_id;
603 		if (mac_slot != NULL)
604 			*mac_slot = attr.va_mac_slot;
605 	}
606 
607 	if (is_vlan) {
608 		dladm_status_t stat2;
609 
610 		stat2 = dladm_bridge_refresh(handle, linkid);
611 		if (status == DLADM_STATUS_OK && stat2 != DLADM_STATUS_OK)
612 			status = stat2;
613 	}
614 	return (status);
615 }
616 
617 /*
618  * Delete a VNIC / VLAN.
619  */
620 dladm_status_t
621 dladm_vnic_delete(dladm_handle_t handle, datalink_id_t linkid, uint32_t flags)
622 {
623 	dladm_status_t status;
624 	datalink_class_t class;
625 
626 	if (flags == 0)
627 		return (DLADM_STATUS_BADARG);
628 
629 	if ((dladm_datalink_id2info(handle, linkid, NULL, &class, NULL, NULL, 0)
630 	    != DLADM_STATUS_OK))
631 		return (DLADM_STATUS_BADARG);
632 
633 	if ((flags & DLADM_OPT_VLAN) != 0) {
634 		if (class != DATALINK_CLASS_VLAN)
635 			return (DLADM_STATUS_BADARG);
636 	} else {
637 		if (class != DATALINK_CLASS_VNIC &&
638 		    class != DATALINK_CLASS_ETHERSTUB)
639 			return (DLADM_STATUS_BADARG);
640 	}
641 
642 	if ((flags & DLADM_OPT_ACTIVE) != 0) {
643 		status = i_dladm_vnic_delete_sys(handle, linkid);
644 		if (status == DLADM_STATUS_OK) {
645 			(void) dladm_set_linkprop(handle, linkid, NULL, NULL, 0,
646 			    DLADM_OPT_ACTIVE);
647 			(void) dladm_destroy_datalink_id(handle, linkid,
648 			    DLADM_OPT_ACTIVE);
649 		} else if (status != DLADM_STATUS_NOTFOUND ||
650 		    !(flags & DLADM_OPT_PERSIST)) {
651 			return (status);
652 		}
653 	}
654 	if ((flags & DLADM_OPT_PERSIST) != 0) {
655 		(void) dladm_remove_conf(handle, linkid);
656 		(void) dladm_destroy_datalink_id(handle, linkid,
657 		    DLADM_OPT_PERSIST);
658 	}
659 	return (dladm_bridge_refresh(handle, linkid));
660 }
661 
662 static const char *
663 dladm_vnic_macaddr2str(const uchar_t *mac, char *buf)
664 {
665 	static char unknown_mac[] = {0, 0, 0, 0, 0, 0};
666 
667 	if (buf == NULL)
668 		return (NULL);
669 
670 	if (bcmp(unknown_mac, mac, ETHERADDRL) == 0)
671 		(void) strlcpy(buf, "unknown", DLADM_STRSIZE);
672 	else
673 		return (_link_ntoa(mac, buf, ETHERADDRL, IFT_OTHER));
674 
675 	return (buf);
676 }
677 
678 static dladm_status_t
679 dladm_vnic_str2macaddr(const char *str, uchar_t *buf)
680 {
681 	int len = 0;
682 	uchar_t *b = _link_aton(str, &len);
683 
684 	if (b == NULL || len >= MAXMACADDRLEN)
685 		return (DLADM_STATUS_BADARG);
686 
687 	bcopy(b, buf, len);
688 	free(b);
689 	return (DLADM_STATUS_OK);
690 }
691 
692 
693 static dladm_status_t
694 dladm_vnic_persist_conf(dladm_handle_t handle, const char *name,
695     dladm_vnic_attr_t *attrp, datalink_class_t class)
696 {
697 	dladm_conf_t conf;
698 	dladm_status_t status;
699 	char macstr[ETHERADDRL * 3];
700 	char linkover[MAXLINKNAMELEN];
701 	uint64_t u64;
702 
703 	if ((status = dladm_create_conf(handle, name, attrp->va_vnic_id,
704 	    class, DL_ETHER, &conf)) != DLADM_STATUS_OK)
705 		return (status);
706 
707 	if (attrp->va_link_id != DATALINK_INVALID_LINKID) {
708 		status = dladm_datalink_id2info(handle, attrp->va_link_id, NULL,
709 		    NULL, NULL, linkover, sizeof (linkover));
710 		if (status != DLADM_STATUS_OK)
711 			goto done;
712 		status = dladm_set_conf_field(handle, conf, FLINKOVER,
713 		    DLADM_TYPE_STR, linkover);
714 		if (status != DLADM_STATUS_OK)
715 			goto done;
716 	}
717 
718 	if (class != DATALINK_CLASS_VLAN) {
719 		u64 = attrp->va_mac_addr_type;
720 		status = dladm_set_conf_field(handle, conf, FMADDRTYPE,
721 		    DLADM_TYPE_UINT64, &u64);
722 		if (status != DLADM_STATUS_OK)
723 			goto done;
724 
725 		u64 = attrp->va_vrid;
726 		status = dladm_set_conf_field(handle, conf, FVRID,
727 		    DLADM_TYPE_UINT64, &u64);
728 		if (status != DLADM_STATUS_OK)
729 			goto done;
730 
731 		u64 = attrp->va_af;
732 		status = dladm_set_conf_field(handle, conf, FVRAF,
733 		    DLADM_TYPE_UINT64, &u64);
734 		if (status != DLADM_STATUS_OK)
735 			goto done;
736 
737 		if (attrp->va_mac_len != ETHERADDRL) {
738 			u64 = attrp->va_mac_len;
739 			status = dladm_set_conf_field(handle, conf, FMADDRLEN,
740 			    DLADM_TYPE_UINT64, &u64);
741 			if (status != DLADM_STATUS_OK)
742 				goto done;
743 		}
744 
745 		if (attrp->va_mac_slot != -1) {
746 			u64 = attrp->va_mac_slot;
747 			status = dladm_set_conf_field(handle, conf,
748 			    FMADDRSLOT, DLADM_TYPE_UINT64, &u64);
749 			if (status != DLADM_STATUS_OK)
750 			goto done;
751 		}
752 
753 		if (attrp->va_mac_prefix_len !=
754 		    sizeof (dladm_vnic_def_prefix)) {
755 			u64 = attrp->va_mac_prefix_len;
756 			status = dladm_set_conf_field(handle, conf,
757 			    FMADDRPREFIXLEN, DLADM_TYPE_UINT64, &u64);
758 			if (status != DLADM_STATUS_OK)
759 				goto done;
760 		}
761 
762 		(void) dladm_vnic_macaddr2str(attrp->va_mac_addr, macstr);
763 		status = dladm_set_conf_field(handle, conf, FMACADDR,
764 		    DLADM_TYPE_STR, macstr);
765 		if (status != DLADM_STATUS_OK)
766 			goto done;
767 	}
768 
769 	if (attrp->va_vid != 0) {
770 		u64 = attrp->va_vid;
771 		status = dladm_set_conf_field(handle, conf, FVLANID,
772 		    DLADM_TYPE_UINT64, &u64);
773 		if (status != DLADM_STATUS_OK)
774 			goto done;
775 	}
776 
777 	/*
778 	 * Commit the link configuration.
779 	 */
780 	status = dladm_write_conf(handle, conf);
781 
782 done:
783 	dladm_destroy_conf(handle, conf);
784 	return (status);
785 }
786 
787 typedef struct dladm_vnic_up_arg_s {
788 	uint32_t	flags;
789 	dladm_status_t	status;
790 } dladm_vnic_up_arg_t;
791 
792 static int
793 i_dladm_vnic_up(dladm_handle_t handle, datalink_id_t linkid, void *arg)
794 {
795 	dladm_status_t *statusp = &(((dladm_vnic_up_arg_t *)arg)->status);
796 	dladm_vnic_attr_t attr;
797 	dladm_status_t status;
798 	dladm_arg_list_t *proplist;
799 
800 	bzero(&attr, sizeof (attr));
801 
802 	status = dladm_vnic_info(handle, linkid, &attr, DLADM_OPT_PERSIST);
803 	if (status != DLADM_STATUS_OK)
804 		goto done;
805 
806 	/* Get all properties for this vnic */
807 	status = dladm_link_get_proplist(handle, linkid, &proplist);
808 	if (status != DLADM_STATUS_OK)
809 		goto done;
810 
811 	if (proplist != NULL) {
812 		status = dladm_link_proplist_extract(handle, proplist,
813 		    &attr.va_resource_props, DLADM_OPT_BOOT);
814 	}
815 
816 	status = i_dladm_vnic_create_sys(handle, &attr);
817 	if (status == DLADM_STATUS_OK) {
818 		status = dladm_up_datalink_id(handle, linkid);
819 		if (status != DLADM_STATUS_OK)
820 			(void) i_dladm_vnic_delete_sys(handle, linkid);
821 	}
822 
823 done:
824 	*statusp = status;
825 	return (DLADM_WALK_CONTINUE);
826 }
827 
828 dladm_status_t
829 dladm_vnic_up(dladm_handle_t handle, datalink_id_t linkid, uint32_t flags)
830 {
831 	dladm_vnic_up_arg_t vnic_arg;
832 	datalink_class_t class;
833 
834 	class = ((flags & DLADM_OPT_VLAN) != 0) ? DATALINK_CLASS_VLAN :
835 	    (DATALINK_CLASS_VNIC | DATALINK_CLASS_ETHERSTUB);
836 
837 	if (linkid == DATALINK_ALL_LINKID) {
838 		(void) dladm_walk_datalink_id(i_dladm_vnic_up, handle,
839 		    &vnic_arg, class, DATALINK_ANY_MEDIATYPE,
840 		    DLADM_OPT_PERSIST);
841 		return (DLADM_STATUS_OK);
842 	} else {
843 		(void) i_dladm_vnic_up(handle, linkid, &vnic_arg);
844 		return (vnic_arg.status);
845 	}
846 }
847