xref: /illumos-gate/usr/src/lib/libdladm/common/libdlvnic.c (revision 46b592853d0f4f11781b6b0a7533f267c6aee132)
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 2009 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #include <stdio.h>
27 #include <sys/types.h>
28 #include <sys/stat.h>
29 #include <string.h>
30 #include <fcntl.h>
31 #include <unistd.h>
32 #include <stropts.h>
33 #include <stdlib.h>
34 #include <errno.h>
35 #include <strings.h>
36 #include <libintl.h>
37 #include <net/if_types.h>
38 #include <net/if_dl.h>
39 #include <sys/dld.h>
40 #include <libdladm_impl.h>
41 #include <libdllink.h>
42 #include <libdlbridge.h>
43 #include <libdlvnic.h>
44 
45 /*
46  * VNIC administration library.
47  */
48 
49 /*
50  * Default random MAC address prefix (locally administered).
51  */
52 static char dladm_vnic_def_prefix[] = {0x02, 0x08, 0x20};
53 
54 static dladm_status_t	dladm_vnic_persist_conf(dladm_handle_t,
55 			    const char *name, dladm_vnic_attr_t *,
56 			    datalink_class_t);
57 static const char	*dladm_vnic_macaddr2str(const uchar_t *, char *);
58 static dladm_status_t	dladm_vnic_str2macaddr(const char *, uchar_t *);
59 
60 /*
61  * Convert a diagnostic returned by the kernel into a dladm_status_t.
62  */
63 static dladm_status_t
64 dladm_vnic_diag2status(vnic_ioc_diag_t ioc_diag)
65 {
66 	switch (ioc_diag) {
67 	case VNIC_IOC_DIAG_MACADDR_INVALID:
68 		return (DLADM_STATUS_INVALIDMACADDR);
69 	case VNIC_IOC_DIAG_MACADDRLEN_INVALID:
70 		return (DLADM_STATUS_INVALIDMACADDRLEN);
71 	case VNIC_IOC_DIAG_MACADDR_NIC:
72 		return (DLADM_STATUS_INVALIDMACADDRNIC);
73 	case VNIC_IOC_DIAG_MACADDR_INUSE:
74 		return (DLADM_STATUS_INVALIDMACADDRINUSE);
75 	case VNIC_IOC_DIAG_MACFACTORYSLOTINVALID:
76 		return (DLADM_STATUS_MACFACTORYSLOTINVALID);
77 	case VNIC_IOC_DIAG_MACFACTORYSLOTUSED:
78 		return (DLADM_STATUS_MACFACTORYSLOTUSED);
79 	case VNIC_IOC_DIAG_MACFACTORYSLOTALLUSED:
80 		return (DLADM_STATUS_MACFACTORYSLOTALLUSED);
81 	case VNIC_IOC_DIAG_MACFACTORYNOTSUP:
82 		return (DLADM_STATUS_MACFACTORYNOTSUP);
83 	case VNIC_IOC_DIAG_MACPREFIX_INVALID:
84 		return (DLADM_STATUS_INVALIDMACPREFIX);
85 	case VNIC_IOC_DIAG_MACPREFIXLEN_INVALID:
86 		return (DLADM_STATUS_INVALIDMACPREFIXLEN);
87 	case VNIC_IOC_DIAG_MACMARGIN_INVALID:
88 		return (DLADM_STATUS_INVALID_MACMARGIN);
89 	case VNIC_IOC_DIAG_NO_HWRINGS:
90 		return (DLADM_STATUS_NO_HWRINGS);
91 	}
92 	return (DLADM_STATUS_OK);
93 }
94 
95 /*
96  * Send a create command to the VNIC driver.
97  */
98 dladm_status_t
99 i_dladm_vnic_create_sys(dladm_handle_t handle, dladm_vnic_attr_t *attr)
100 {
101 	int rc;
102 	vnic_ioc_create_t ioc;
103 	dladm_status_t status = DLADM_STATUS_OK;
104 
105 	bzero(&ioc, sizeof (ioc));
106 	ioc.vc_vnic_id = attr->va_vnic_id;
107 	ioc.vc_link_id = attr->va_link_id;
108 	ioc.vc_mac_addr_type = attr->va_mac_addr_type;
109 	ioc.vc_mac_len = attr->va_mac_len;
110 	ioc.vc_mac_slot = attr->va_mac_slot;
111 	ioc.vc_mac_prefix_len = attr->va_mac_prefix_len;
112 	ioc.vc_vid = attr->va_vid;
113 	ioc.vc_flags = attr->va_force ? VNIC_IOC_CREATE_FORCE : 0;
114 	ioc.vc_flags |= attr->va_hwrings ? VNIC_IOC_CREATE_REQ_HWRINGS : 0;
115 
116 	if (attr->va_mac_len > 0 || ioc.vc_mac_prefix_len > 0)
117 		bcopy(attr->va_mac_addr, ioc.vc_mac_addr, MAXMACADDRLEN);
118 	bcopy(&attr->va_resource_props, &ioc.vc_resource_props,
119 	    sizeof (mac_resource_props_t));
120 	if (attr->va_link_id == DATALINK_INVALID_LINKID)
121 		ioc.vc_flags |= VNIC_IOC_CREATE_ANCHOR;
122 
123 	rc = ioctl(dladm_dld_fd(handle), VNIC_IOC_CREATE, &ioc);
124 	if (rc < 0)
125 		status = dladm_errno2status(errno);
126 
127 	if (status != DLADM_STATUS_OK) {
128 		if (ioc.vc_diag != VNIC_IOC_DIAG_NONE)
129 			status = dladm_vnic_diag2status(ioc.vc_diag);
130 	}
131 	if (status != DLADM_STATUS_OK)
132 		return (status);
133 
134 	attr->va_mac_addr_type = ioc.vc_mac_addr_type;
135 	switch (ioc.vc_mac_addr_type) {
136 	case VNIC_MAC_ADDR_TYPE_FACTORY:
137 		attr->va_mac_slot = ioc.vc_mac_slot;
138 		break;
139 	case VNIC_MAC_ADDR_TYPE_RANDOM:
140 		bcopy(ioc.vc_mac_addr, attr->va_mac_addr, MAXMACADDRLEN);
141 		attr->va_mac_len = ioc.vc_mac_len;
142 		break;
143 	}
144 	return (status);
145 }
146 
147 /*
148  * Get the configuration information of the given VNIC.
149  */
150 static dladm_status_t
151 i_dladm_vnic_info_active(dladm_handle_t handle, datalink_id_t linkid,
152     dladm_vnic_attr_t *attrp)
153 {
154 	vnic_ioc_info_t ioc;
155 	vnic_info_t *vnic;
156 	int rc;
157 	dladm_status_t status = DLADM_STATUS_OK;
158 
159 	bzero(&ioc, sizeof (ioc));
160 	vnic = &ioc.vi_info;
161 	vnic->vn_vnic_id = linkid;
162 
163 	rc = ioctl(dladm_dld_fd(handle), VNIC_IOC_INFO, &ioc);
164 	if (rc != 0) {
165 		status = dladm_errno2status(errno);
166 		goto bail;
167 	}
168 
169 	attrp->va_vnic_id = vnic->vn_vnic_id;
170 	attrp->va_link_id = vnic->vn_link_id;
171 	attrp->va_mac_addr_type = vnic->vn_mac_addr_type;
172 	bcopy(vnic->vn_mac_addr, attrp->va_mac_addr, MAXMACADDRLEN);
173 	attrp->va_mac_len = vnic->vn_mac_len;
174 	attrp->va_mac_slot = vnic->vn_mac_slot;
175 	attrp->va_mac_prefix_len = vnic->vn_mac_prefix_len;
176 	attrp->va_vid = vnic->vn_vid;
177 	attrp->va_force = vnic->vn_force;
178 
179 bail:
180 	return (status);
181 }
182 
183 static dladm_status_t
184 i_dladm_vnic_info_persist(dladm_handle_t handle, datalink_id_t linkid,
185     dladm_vnic_attr_t *attrp)
186 {
187 	dladm_conf_t conf;
188 	dladm_status_t status;
189 	char macstr[ETHERADDRL * 3];
190 	char linkover[MAXLINKNAMELEN];
191 	uint64_t u64;
192 	datalink_class_t class;
193 
194 	attrp->va_vnic_id = linkid;
195 	if ((status = dladm_read_conf(handle, linkid, &conf)) !=
196 	    DLADM_STATUS_OK)
197 		return (status);
198 
199 	status = dladm_get_conf_field(handle, conf, FLINKOVER, linkover,
200 	    sizeof (linkover));
201 	if (status != DLADM_STATUS_OK) {
202 		/*
203 		 * This isn't an error, etherstubs don't have a FLINKOVER
204 		 * property.
205 		 */
206 		attrp->va_link_id = DATALINK_INVALID_LINKID;
207 	} else {
208 		if ((status = dladm_name2info(handle, linkover,
209 		    &attrp->va_link_id, NULL, NULL, NULL)) != DLADM_STATUS_OK)
210 			goto done;
211 	}
212 
213 	status = dladm_get_conf_field(handle, conf, FHWRINGS,
214 	    &attrp->va_hwrings, sizeof (boolean_t));
215 
216 	if (status != DLADM_STATUS_OK && status != DLADM_STATUS_NOTFOUND)
217 		goto done;
218 	if (status == DLADM_STATUS_NOTFOUND)
219 		attrp->va_hwrings = B_FALSE;
220 
221 	if ((status = dladm_datalink_id2info(handle, linkid, NULL, &class,
222 	    NULL, NULL, 0)) != DLADM_STATUS_OK)
223 		goto done;
224 
225 	if (class == DATALINK_CLASS_VLAN) {
226 		if (attrp->va_link_id == DATALINK_INVALID_LINKID) {
227 			status = DLADM_STATUS_BADARG;
228 			goto done;
229 		}
230 		attrp->va_mac_addr_type = VNIC_MAC_ADDR_TYPE_PRIMARY;
231 		attrp->va_mac_len = 0;
232 	} else {
233 		status = dladm_get_conf_field(handle, conf, FMADDRTYPE, &u64,
234 		    sizeof (u64));
235 		if (status != DLADM_STATUS_OK)
236 			goto done;
237 
238 		attrp->va_mac_addr_type = (vnic_mac_addr_type_t)u64;
239 
240 		status = dladm_get_conf_field(handle, conf, FMADDRLEN, &u64,
241 		    sizeof (u64));
242 		attrp->va_mac_len = ((status == DLADM_STATUS_OK) ?
243 		    (uint_t)u64 : ETHERADDRL);
244 
245 		status = dladm_get_conf_field(handle, conf, FMADDRSLOT, &u64,
246 		    sizeof (u64));
247 		attrp->va_mac_slot = ((status == DLADM_STATUS_OK) ?
248 		    (int)u64 : -1);
249 
250 		status = dladm_get_conf_field(handle, conf, FMADDRPREFIXLEN,
251 		    &u64, sizeof (u64));
252 		attrp->va_mac_prefix_len = ((status == DLADM_STATUS_OK) ?
253 		    (uint_t)u64 : sizeof (dladm_vnic_def_prefix));
254 
255 		status = dladm_get_conf_field(handle, conf, FMACADDR, macstr,
256 		    sizeof (macstr));
257 		if (status != DLADM_STATUS_OK)
258 			goto done;
259 
260 		status = dladm_vnic_str2macaddr(macstr, attrp->va_mac_addr);
261 		if (status != DLADM_STATUS_OK)
262 			goto done;
263 	}
264 
265 	status = dladm_get_conf_field(handle, conf, FVLANID, &u64,
266 	    sizeof (u64));
267 	attrp->va_vid = ((status == DLADM_STATUS_OK) ?  (uint16_t)u64 : 0);
268 
269 
270 	status = DLADM_STATUS_OK;
271 done:
272 	dladm_destroy_conf(handle, conf);
273 	return (status);
274 }
275 
276 dladm_status_t
277 dladm_vnic_info(dladm_handle_t handle, datalink_id_t linkid,
278     dladm_vnic_attr_t *attrp, uint32_t flags)
279 {
280 	if (flags == DLADM_OPT_ACTIVE)
281 		return (i_dladm_vnic_info_active(handle, linkid, attrp));
282 	else if (flags == DLADM_OPT_PERSIST)
283 		return (i_dladm_vnic_info_persist(handle, linkid, attrp));
284 	else
285 		return (DLADM_STATUS_BADARG);
286 }
287 
288 /*
289  * Remove a VNIC from the kernel.
290  */
291 dladm_status_t
292 i_dladm_vnic_delete_sys(dladm_handle_t handle, datalink_id_t linkid)
293 {
294 	vnic_ioc_delete_t ioc;
295 	dladm_status_t status = DLADM_STATUS_OK;
296 	int rc;
297 
298 	ioc.vd_vnic_id = linkid;
299 
300 	rc = ioctl(dladm_dld_fd(handle), VNIC_IOC_DELETE, &ioc);
301 	if (rc < 0)
302 		status = dladm_errno2status(errno);
303 
304 	return (status);
305 }
306 
307 /*
308  * Convert between MAC address types and their string representations.
309  */
310 
311 typedef struct dladm_vnic_addr_type_s {
312 	const char		*va_str;
313 	vnic_mac_addr_type_t	va_type;
314 } dladm_vnic_addr_type_t;
315 
316 static dladm_vnic_addr_type_t addr_types[] = {
317 	{"fixed", VNIC_MAC_ADDR_TYPE_FIXED},
318 	{"random", VNIC_MAC_ADDR_TYPE_RANDOM},
319 	{"factory", VNIC_MAC_ADDR_TYPE_FACTORY},
320 	{"auto", VNIC_MAC_ADDR_TYPE_AUTO},
321 	{"fixed", VNIC_MAC_ADDR_TYPE_PRIMARY}
322 };
323 
324 #define	NADDR_TYPES (sizeof (addr_types) / sizeof (dladm_vnic_addr_type_t))
325 
326 static const char *
327 dladm_vnic_macaddrtype2str(vnic_mac_addr_type_t type)
328 {
329 	int i;
330 
331 	for (i = 0; i < NADDR_TYPES; i++) {
332 		if (type == addr_types[i].va_type)
333 			return (addr_types[i].va_str);
334 	}
335 	return (NULL);
336 }
337 
338 dladm_status_t
339 dladm_vnic_str2macaddrtype(const char *str, vnic_mac_addr_type_t *val)
340 {
341 	int i;
342 	dladm_vnic_addr_type_t *type;
343 
344 	for (i = 0; i < NADDR_TYPES; i++) {
345 		type = &addr_types[i];
346 		if (strncmp(str, type->va_str, strlen(type->va_str)) == 0) {
347 			*val = type->va_type;
348 			return (DLADM_STATUS_OK);
349 		}
350 	}
351 	return (DLADM_STATUS_BADARG);
352 }
353 
354 /*
355  * Create a new VNIC / VLAN. Update the configuration file and bring it up.
356  */
357 dladm_status_t
358 dladm_vnic_create(dladm_handle_t handle, const char *vnic, datalink_id_t linkid,
359     vnic_mac_addr_type_t mac_addr_type, uchar_t *mac_addr, int mac_len,
360     int *mac_slot, uint_t mac_prefix_len, uint16_t vid,
361     datalink_id_t *vnic_id_out, dladm_arg_list_t *proplist, uint32_t flags)
362 {
363 	dladm_vnic_attr_t attr;
364 	datalink_id_t vnic_id;
365 	datalink_class_t class;
366 	uint32_t media = DL_ETHER;
367 	char name[MAXLINKNAMELEN];
368 	uchar_t tmp_addr[MAXMACADDRLEN];
369 	dladm_status_t status;
370 	boolean_t is_vlan;
371 	boolean_t is_etherstub;
372 	int i;
373 	boolean_t vnic_created = B_FALSE;
374 	boolean_t conf_set = B_FALSE;
375 
376 	/*
377 	 * Sanity test arguments.
378 	 */
379 	if ((flags & DLADM_OPT_ACTIVE) == 0)
380 		return (DLADM_STATUS_NOTSUP);
381 
382 	is_vlan = ((flags & DLADM_OPT_VLAN) != 0);
383 	if (is_vlan && ((vid < 1 || vid > 4094)))
384 		return (DLADM_STATUS_VIDINVAL);
385 
386 	is_etherstub = (linkid == DATALINK_INVALID_LINKID);
387 
388 	if (mac_len > MAXMACADDRLEN)
389 		return (DLADM_STATUS_INVALIDMACADDRLEN);
390 
391 	if (!dladm_vnic_macaddrtype2str(mac_addr_type))
392 		return (DLADM_STATUS_INVALIDMACADDRTYPE);
393 
394 	/*
395 	 * If a random address might be generated, but no prefix
396 	 * was specified by the caller, use the default MAC address
397 	 * prefix.
398 	 */
399 	if ((mac_addr_type == VNIC_MAC_ADDR_TYPE_RANDOM ||
400 	    mac_addr_type == VNIC_MAC_ADDR_TYPE_AUTO) &&
401 	    mac_prefix_len == 0) {
402 		mac_prefix_len = sizeof (dladm_vnic_def_prefix);
403 		mac_addr = tmp_addr;
404 		bcopy(dladm_vnic_def_prefix, mac_addr, mac_prefix_len);
405 	}
406 
407 	if ((flags & DLADM_OPT_ANCHOR) == 0) {
408 		if ((status = dladm_datalink_id2info(handle, linkid, NULL,
409 		    &class, &media, NULL, 0)) != DLADM_STATUS_OK)
410 			return (status);
411 
412 		if (class == DATALINK_CLASS_VNIC ||
413 		    class == DATALINK_CLASS_VLAN)
414 			return (DLADM_STATUS_BADARG);
415 	} else {
416 		/* it's an anchor VNIC */
417 		if (linkid != DATALINK_INVALID_LINKID || vid != 0)
418 			return (DLADM_STATUS_BADARG);
419 	}
420 
421 	if (vnic == NULL) {
422 		flags |= DLADM_OPT_PREFIX;
423 		(void) strlcpy(name, "vnic", sizeof (name));
424 	} else {
425 		(void) strlcpy(name, vnic, sizeof (name));
426 	}
427 
428 	class = is_vlan ? DATALINK_CLASS_VLAN :
429 	    (is_etherstub ? DATALINK_CLASS_ETHERSTUB : DATALINK_CLASS_VNIC);
430 	if ((status = dladm_create_datalink_id(handle, name, class,
431 	    media, flags, &vnic_id)) != DLADM_STATUS_OK)
432 		return (status);
433 
434 	if ((flags & DLADM_OPT_PREFIX) != 0) {
435 		(void) snprintf(name + 4, sizeof (name), "%llu", vnic_id);
436 		flags &= ~DLADM_OPT_PREFIX;
437 	}
438 
439 	bzero(&attr, sizeof (attr));
440 
441 	/* Extract resource_ctl and cpu_list from proplist */
442 	if (proplist != NULL) {
443 		status = dladm_link_proplist_extract(handle, proplist,
444 		    &attr.va_resource_props);
445 		if (status != DLADM_STATUS_OK)
446 			goto done;
447 	}
448 
449 	attr.va_vnic_id = vnic_id;
450 	attr.va_link_id = linkid;
451 	attr.va_mac_addr_type = mac_addr_type;
452 	attr.va_mac_len = mac_len;
453 	if (mac_slot != NULL)
454 		attr.va_mac_slot = *mac_slot;
455 	if (mac_len > 0)
456 		bcopy(mac_addr, attr.va_mac_addr, mac_len);
457 	else if (mac_prefix_len > 0)
458 		bcopy(mac_addr, attr.va_mac_addr, mac_prefix_len);
459 	attr.va_mac_prefix_len = mac_prefix_len;
460 	attr.va_vid = vid;
461 	attr.va_force = (flags & DLADM_OPT_FORCE) != 0;
462 	attr.va_hwrings = (flags & DLADM_OPT_HWRINGS) != 0;
463 
464 	status = i_dladm_vnic_create_sys(handle, &attr);
465 	if (status != DLADM_STATUS_OK)
466 		goto done;
467 	vnic_created = B_TRUE;
468 
469 	/* Save vnic configuration and its properties */
470 	if (!(flags & DLADM_OPT_PERSIST))
471 		goto done;
472 
473 	status = dladm_vnic_persist_conf(handle, name, &attr, class);
474 	if (status != DLADM_STATUS_OK)
475 		goto done;
476 	conf_set = B_TRUE;
477 
478 	if (proplist != NULL) {
479 		for (i = 0; i < proplist->al_count; i++) {
480 			dladm_arg_info_t	*aip = &proplist->al_info[i];
481 
482 			status = dladm_set_linkprop(handle, vnic_id,
483 			    aip->ai_name, aip->ai_val, aip->ai_count,
484 			    DLADM_OPT_PERSIST);
485 			if (status != DLADM_STATUS_OK)
486 				break;
487 		}
488 	}
489 
490 done:
491 	if (status != DLADM_STATUS_OK) {
492 		if (conf_set)
493 			(void) dladm_remove_conf(handle, vnic_id);
494 		if (vnic_created)
495 			(void) i_dladm_vnic_delete_sys(handle, vnic_id);
496 		(void) dladm_destroy_datalink_id(handle, vnic_id, flags);
497 	} else {
498 		if (vnic_id_out != NULL)
499 			*vnic_id_out = vnic_id;
500 		if (mac_slot != NULL)
501 			*mac_slot = attr.va_mac_slot;
502 	}
503 
504 	if (is_vlan) {
505 		dladm_status_t stat2;
506 
507 		stat2 = dladm_bridge_refresh(handle, linkid);
508 		if (status == DLADM_STATUS_OK && stat2 != DLADM_STATUS_OK)
509 			status = stat2;
510 	}
511 	return (status);
512 }
513 
514 /*
515  * Delete a VNIC / VLAN.
516  */
517 dladm_status_t
518 dladm_vnic_delete(dladm_handle_t handle, datalink_id_t linkid, uint32_t flags)
519 {
520 	dladm_status_t status;
521 	datalink_class_t class;
522 
523 	if (flags == 0)
524 		return (DLADM_STATUS_BADARG);
525 
526 	if ((dladm_datalink_id2info(handle, linkid, NULL, &class, NULL, NULL, 0)
527 	    != DLADM_STATUS_OK))
528 		return (DLADM_STATUS_BADARG);
529 
530 	if ((flags & DLADM_OPT_VLAN) != 0) {
531 		if (class != DATALINK_CLASS_VLAN)
532 			return (DLADM_STATUS_BADARG);
533 	} else {
534 		if (class != DATALINK_CLASS_VNIC &&
535 		    class != DATALINK_CLASS_ETHERSTUB)
536 			return (DLADM_STATUS_BADARG);
537 	}
538 
539 	if ((flags & DLADM_OPT_ACTIVE) != 0) {
540 		status = i_dladm_vnic_delete_sys(handle, linkid);
541 		if (status == DLADM_STATUS_OK) {
542 			(void) dladm_set_linkprop(handle, linkid, NULL, NULL, 0,
543 			    DLADM_OPT_ACTIVE);
544 			(void) dladm_destroy_datalink_id(handle, linkid,
545 			    DLADM_OPT_ACTIVE);
546 		} else if (status != DLADM_STATUS_NOTFOUND ||
547 		    !(flags & DLADM_OPT_PERSIST)) {
548 			return (status);
549 		}
550 	}
551 	if ((flags & DLADM_OPT_PERSIST) != 0) {
552 		(void) dladm_remove_conf(handle, linkid);
553 		(void) dladm_destroy_datalink_id(handle, linkid,
554 		    DLADM_OPT_PERSIST);
555 	}
556 	return (dladm_bridge_refresh(handle, linkid));
557 }
558 
559 static const char *
560 dladm_vnic_macaddr2str(const uchar_t *mac, char *buf)
561 {
562 	static char unknown_mac[] = {0, 0, 0, 0, 0, 0};
563 
564 	if (buf == NULL)
565 		return (NULL);
566 
567 	if (bcmp(unknown_mac, mac, ETHERADDRL) == 0)
568 		(void) strlcpy(buf, "unknown", DLADM_STRSIZE);
569 	else
570 		return (_link_ntoa(mac, buf, ETHERADDRL, IFT_OTHER));
571 
572 	return (buf);
573 }
574 
575 static dladm_status_t
576 dladm_vnic_str2macaddr(const char *str, uchar_t *buf)
577 {
578 	int len = 0;
579 	uchar_t *b = _link_aton(str, &len);
580 
581 	if (b == NULL || len >= MAXMACADDRLEN)
582 		return (DLADM_STATUS_BADARG);
583 
584 	bcopy(b, buf, len);
585 	free(b);
586 	return (DLADM_STATUS_OK);
587 }
588 
589 
590 static dladm_status_t
591 dladm_vnic_persist_conf(dladm_handle_t handle, const char *name,
592     dladm_vnic_attr_t *attrp, datalink_class_t class)
593 {
594 	dladm_conf_t conf = DLADM_INVALID_CONF;
595 	dladm_status_t status;
596 	char macstr[ETHERADDRL * 3];
597 	char linkover[MAXLINKNAMELEN];
598 	uint64_t u64;
599 
600 	if ((status = dladm_create_conf(handle, name, attrp->va_vnic_id,
601 	    class, DL_ETHER, &conf)) != DLADM_STATUS_OK)
602 		return (status);
603 
604 	if (attrp->va_link_id != DATALINK_INVALID_LINKID) {
605 		status = dladm_datalink_id2info(handle, attrp->va_link_id, NULL,
606 		    NULL, NULL, linkover, sizeof (linkover));
607 		if (status != DLADM_STATUS_OK)
608 			goto done;
609 		status = dladm_set_conf_field(handle, conf, FLINKOVER,
610 		    DLADM_TYPE_STR, linkover);
611 		if (status != DLADM_STATUS_OK)
612 			goto done;
613 	}
614 
615 	if (class != DATALINK_CLASS_VLAN) {
616 		u64 = attrp->va_mac_addr_type;
617 		status = dladm_set_conf_field(handle, conf, FMADDRTYPE,
618 		    DLADM_TYPE_UINT64, &u64);
619 		if (status != DLADM_STATUS_OK)
620 			goto done;
621 
622 		if (attrp->va_mac_len != ETHERADDRL) {
623 			u64 = attrp->va_mac_len;
624 			status = dladm_set_conf_field(handle, conf, FMADDRLEN,
625 			    DLADM_TYPE_UINT64, &u64);
626 			if (status != DLADM_STATUS_OK)
627 				goto done;
628 		}
629 	}
630 
631 	if (attrp->va_hwrings) {
632 		boolean_t hwrings = attrp->va_hwrings;
633 		status = dladm_set_conf_field(handle, conf, FHWRINGS,
634 		    DLADM_TYPE_BOOLEAN, &hwrings);
635 		if (status != DLADM_STATUS_OK)
636 			goto done;
637 	}
638 
639 	if (class != DATALINK_CLASS_VLAN) {
640 		if (attrp->va_mac_slot != -1) {
641 			u64 = attrp->va_mac_slot;
642 			status = dladm_set_conf_field(handle, conf, FMADDRSLOT,
643 			    DLADM_TYPE_UINT64, &u64);
644 			if (status != DLADM_STATUS_OK)
645 			goto done;
646 		}
647 
648 		if (attrp->va_mac_prefix_len !=
649 		    sizeof (dladm_vnic_def_prefix)) {
650 			u64 = attrp->va_mac_prefix_len;
651 			status = dladm_set_conf_field(handle, conf,
652 			    FMADDRPREFIXLEN, DLADM_TYPE_UINT64, &u64);
653 			if (status != DLADM_STATUS_OK)
654 				goto done;
655 		}
656 
657 		(void) dladm_vnic_macaddr2str(attrp->va_mac_addr, macstr);
658 		status = dladm_set_conf_field(handle, conf, FMACADDR,
659 		    DLADM_TYPE_STR, macstr);
660 		if (status != DLADM_STATUS_OK)
661 			goto done;
662 	}
663 
664 	if (attrp->va_vid != 0) {
665 		u64 = attrp->va_vid;
666 		status = dladm_set_conf_field(handle, conf, FVLANID,
667 		    DLADM_TYPE_UINT64, &u64);
668 		if (status != DLADM_STATUS_OK)
669 			goto done;
670 	}
671 
672 	/*
673 	 * Commit the link configuration.
674 	 */
675 	status = dladm_write_conf(handle, conf);
676 
677 done:
678 	dladm_destroy_conf(handle, conf);
679 	return (status);
680 }
681 
682 typedef struct dladm_vnic_up_arg_s {
683 	uint32_t	flags;
684 	dladm_status_t	status;
685 } dladm_vnic_up_arg_t;
686 
687 #define	DLADM_VNIC_UP_FIRST_WALK	0x1
688 #define	DLADM_VNIC_UP_SECOND_WALK	0x2
689 
690 static int
691 i_dladm_vnic_up(dladm_handle_t handle, datalink_id_t linkid, void *arg)
692 {
693 	dladm_status_t *statusp = &(((dladm_vnic_up_arg_t *)arg)->status);
694 	dladm_vnic_attr_t attr;
695 	dladm_status_t status;
696 	dladm_arg_list_t *proplist;
697 	uint32_t flags = ((dladm_vnic_up_arg_t *)arg)->flags;
698 
699 	bzero(&attr, sizeof (attr));
700 
701 	status = dladm_vnic_info(handle, linkid, &attr, DLADM_OPT_PERSIST);
702 	if (status != DLADM_STATUS_OK)
703 		goto done;
704 
705 	/*
706 	 * Create the vnics that request hardware group first
707 	 * Create the vnics that don't request hardware group in the second walk
708 	 */
709 	if ((flags == DLADM_VNIC_UP_FIRST_WALK && !attr.va_hwrings) ||
710 	    (flags == DLADM_VNIC_UP_SECOND_WALK && attr.va_hwrings))
711 			goto done;
712 
713 	/* Get all properties for this vnic */
714 	status = dladm_link_get_proplist(handle, linkid, &proplist);
715 	if (status != DLADM_STATUS_OK)
716 		goto done;
717 
718 	if (proplist != NULL) {
719 		status = dladm_link_proplist_extract(handle, proplist,
720 		    &attr.va_resource_props);
721 	}
722 
723 	status = i_dladm_vnic_create_sys(handle, &attr);
724 	if (status == DLADM_STATUS_OK) {
725 		status = dladm_up_datalink_id(handle, linkid);
726 		if (status != DLADM_STATUS_OK)
727 			(void) i_dladm_vnic_delete_sys(handle, linkid);
728 	}
729 
730 done:
731 	*statusp = status;
732 	return (DLADM_WALK_CONTINUE);
733 }
734 
735 dladm_status_t
736 dladm_vnic_up(dladm_handle_t handle, datalink_id_t linkid, uint32_t flags)
737 {
738 	dladm_vnic_up_arg_t vnic_arg;
739 	datalink_class_t class;
740 
741 	class = ((flags & DLADM_OPT_VLAN) != 0) ? DATALINK_CLASS_VLAN :
742 	    (DATALINK_CLASS_VNIC | DATALINK_CLASS_ETHERSTUB);
743 
744 	if (linkid == DATALINK_ALL_LINKID) {
745 		vnic_arg.flags = DLADM_VNIC_UP_FIRST_WALK;
746 		(void) dladm_walk_datalink_id(i_dladm_vnic_up, handle,
747 		    &vnic_arg, class, DATALINK_ANY_MEDIATYPE,
748 		    DLADM_OPT_PERSIST);
749 		vnic_arg.flags = DLADM_VNIC_UP_SECOND_WALK;
750 		(void) dladm_walk_datalink_id(i_dladm_vnic_up, handle,
751 		    &vnic_arg, class, DATALINK_ANY_MEDIATYPE,
752 		    DLADM_OPT_PERSIST);
753 		return (DLADM_STATUS_OK);
754 	} else {
755 		(void) i_dladm_vnic_up(handle, linkid, &vnic_arg);
756 		return (vnic_arg.status);
757 	}
758 }
759