libdladm/common/libdlib.c

	libdlib.c revision 327151705b7439cb7ab35c370f682cac7ef9523a
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
 */

#include <stdio.h>
#include <libdevinfo.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <stropts.h>
#include <stdlib.h>
#include <errno.h>
#include <strings.h>
#include <libintl.h>
#include <net/if_types.h>
#include <net/if_dl.h>
#include <sys/dld.h>
#include <sys/ib/ib_types.h>
#include <sys/ibpart.h>
#include <libdllink.h>
#include <libdladm.h>
#include <libdlib.h>
#include <libdladm_impl.h>

/*
 * IP over IB administration API; see PSARC/2010/085
 */

/*
 * Function prototypes
 */
dladm_status_t dladm_part_create(dladm_handle_t, datalink_id_t, ib_pkey_t,
    uint32_t, char *, datalink_id_t *, dladm_arg_list_t *);
static dladm_status_t   i_dladm_part_create(dladm_handle_t,
    dladm_part_attr_t *);
static dladm_status_t   dladm_part_persist_conf(dladm_handle_t, const char *,
    dladm_part_attr_t *);
static dladm_status_t i_dladm_part_delete(dladm_handle_t, datalink_id_t);
dladm_status_t  dladm_part_delete(dladm_handle_t, datalink_id_t, int);
static int  i_dladm_part_up(dladm_handle_t, datalink_id_t, void *);
dladm_status_t  dladm_part_up(dladm_handle_t, datalink_id_t, uint32_t);

/*
 * Convert a error status returned by the IP over IB kernel driver to a
 * valid dladm status.
 */
static dladm_status_t
dladm_ib_ioctl_err2status(int err)
{
    switch (err) {
    case 0:
        return (DLADM_STATUS_OK);
    case IBD_INVALID_PORT_INST:
        return (DLADM_STATUS_INVALID_PORT_INSTANCE);
    case IBD_PORT_IS_DOWN:
        return (DLADM_STATUS_PORT_IS_DOWN);
    case IBD_PKEY_NOT_PRESENT:
        return (DLADM_STATUS_PKEY_NOT_PRESENT);
    case IBD_PARTITION_EXISTS:
        return (DLADM_STATUS_PARTITION_EXISTS);
    case IBD_INVALID_PKEY:
        return (DLADM_STATUS_INVALID_PKEY);
    case IBD_NO_HW_RESOURCE:
        return (DLADM_STATUS_NO_IB_HW_RESOURCE);
    case IBD_INVALID_PKEY_TBL_SIZE:
        return (DLADM_STATUS_INVALID_PKEY_TBL_SIZE);
    default:
        return (DLADM_STATUS_FAILED);
    }
}

static dladm_status_t
i_dladm_ib_ioctl(dladm_handle_t handle, int ioccmd, ibd_ioctl_t *iocp)
{
    if (ioctl(dladm_dld_fd(handle), ioccmd, iocp) == 0)
        return (DLADM_STATUS_OK);

    if (iocp->ioc_status == 0)
        return (dladm_errno2status(errno));

    return (dladm_ib_ioctl_err2status(iocp->ioc_status));
}

/*
 * Get the active configuration information for the partition given by
 * the 'linkid'.
 */
static dladm_status_t
i_dladm_part_info_active(dladm_handle_t handle, datalink_id_t linkid,
    dladm_part_attr_t *attrp)
{
    ibpart_ioctl_t ioc;
    dladm_status_t status = DLADM_STATUS_OK;

    bzero(&ioc, sizeof (ioc));
    bzero(attrp, sizeof (*attrp));
    /*
     * The ioc_linkid here will contain the data link id of the IB partition
     * object.
     */
    ioc.ibdioc.ioc_linkid = linkid;
    ioc.ibdioc.ioc_info_cmd = IBD_INFO_CMD_IBPART;

    status = i_dladm_ib_ioctl(handle, IBD_INFO_IBPART, (ibd_ioctl_t *)&ioc);
    if (status != DLADM_STATUS_OK)
        goto bail;

    /*
     * On return from the ioctl ioc_linkid field contains the IB port's
     * linkid.
     */
    attrp->dia_physlinkid = ioc.ibdioc.ioc_linkid;
    attrp->dia_partlinkid = ioc.ioc_partid;
    attrp->dia_pkey = ioc.ioc_pkey;
    attrp->dia_portnum = ioc.ibdioc.ioc_portnum;
    attrp->dia_hca_guid = ioc.ibdioc.ioc_hcaguid;
    attrp->dia_port_guid = ioc.ibdioc.ioc_portguid;
    attrp->dia_instance = ioc.ibdioc.ioc_port_inst;

    /*
     * If the IP over IB driver reports that this partition was created
     * forcibly, then set the force create flag.
     */
    if (ioc.ioc_force_create)
        attrp->dia_flags |= DLADM_PART_FORCE_CREATE;

bail:
    return (status);
}

/*
 * Get the configuration information about the IB partition 'linkid' from the
 * persistent configuration.
 */
static dladm_status_t
i_dladm_part_info_persist(dladm_handle_t handle, datalink_id_t linkid,
    dladm_part_attr_t *attrp)
{
    dladm_conf_t conf;
    dladm_status_t status;
    char linkover[MAXLINKNAMELEN];
    datalink_class_t class;
    boolean_t force = B_FALSE;

    /* Get the IB partition's datalink ID */
    if ((status = dladm_datalink_id2info(handle, linkid, NULL, &class,
        NULL, NULL, 0)) != DLADM_STATUS_OK)
        goto done;

    bzero(attrp, sizeof (*attrp));
    attrp->dia_partlinkid = linkid;
    if ((status = dladm_getsnap_conf(handle, linkid, &conf)) !=
        DLADM_STATUS_OK)
        return (status);

    /*
     * Get the name of the IB Phys link over which IB partition was
     * created.
     */
    status = dladm_get_conf_field(handle, conf, FLINKOVER, linkover,
        sizeof (linkover));
    if (status != DLADM_STATUS_OK) {
        attrp->dia_physlinkid = DATALINK_INVALID_LINKID;
        goto done;
    } else {
        /* Get the IB Phys link's datalink ID */
        if ((status = dladm_name2info(handle, linkover,
            &attrp->dia_physlinkid, NULL, NULL, NULL)) !=
            DLADM_STATUS_OK)
            goto done;
    }

    /* Get the IB partition's P_Key */
    status = dladm_get_conf_field(handle, conf, FPORTPKEY,
        &attrp->dia_pkey, sizeof (uint64_t));
    if (status != DLADM_STATUS_OK)
        goto done;

    if (class != DATALINK_CLASS_PART) {
        status = DLADM_STATUS_BADARG;
        goto done;
    }

    /*
     * If the FFORCE field is set in the persistent configuration database
     * set the force create flag in the partition attributes.
     */
    status = dladm_get_conf_field(handle, conf, FFORCE, &force,
        sizeof (boolean_t));
    if (status != DLADM_STATUS_OK) {
        if (status != DLADM_STATUS_NOTFOUND)
            goto done;
    } else if (force == B_TRUE) {
        attrp->dia_flags |= DLADM_PART_FORCE_CREATE;
    }

    status = DLADM_STATUS_OK;
done:
    dladm_destroy_conf(handle, conf);
    return (status);
}

/*
 * Get the configuration information for the IB partition given by the datalink
 * ID 'linkid'. Based on the 'flags' field the information is either from the
 * active system (DLADM_OPT_ACTIVE) or from the persistent configuration
 * database.
 */
dladm_status_t
dladm_part_info(dladm_handle_t handle, datalink_id_t linkid,
    dladm_part_attr_t *attrp, uint32_t flags)
{
    if (flags == DLADM_OPT_ACTIVE)
        return (i_dladm_part_info_active(handle, linkid, attrp));
    else if (flags == DLADM_OPT_PERSIST)
        return (i_dladm_part_info_persist(handle, linkid, attrp));
    else
        return (DLADM_STATUS_BADARG);
}

/*
 * Get the configuration information for the IB Phys link given by the datalink
 * ID 'linkid'.
 */
/* ARGSUSED */
dladm_status_t
dladm_ib_info(dladm_handle_t handle, datalink_id_t linkid,
    dladm_ib_attr_t *attrp, uint32_t flags)
{
    uint_t instance;
    ibport_ioctl_t ioc;
    dladm_phys_attr_t   dpa;
    dladm_status_t status = DLADM_STATUS_OK;

    /*
     * We need to get the device name of the IB Phys link to get the
     * correct instance number of the IP over IB driver instance.
     */
    if (dladm_phys_info(handle, linkid, &dpa, DLADM_OPT_ACTIVE)
        != DLADM_STATUS_OK)
        return (DLADM_STATUS_BADARG);

    /*
     * Get the instance number of the IP over IB driver instance which
     * represents this IB Phys link.
     */
    if (dladm_parselink(dpa.dp_dev, NULL, &instance) != DLADM_STATUS_OK)
        return (DLADM_STATUS_FAILED);

    bzero(&ioc, sizeof (ioc));
    /*
     * The ioc_linkid here will contain IB port linkid here. We make the
     * first ioctl call to get the P_Key table size for this HCA port.
     */
    ioc.ibdioc.ioc_linkid = linkid;
    ioc.ibdioc.ioc_info_cmd = IBD_INFO_CMD_PKEYTBLSZ;
    ioc.ioc_pkey_tbl_sz = 0;
    ioc.ibdioc.ioc_port_inst = instance;

    status = i_dladm_ib_ioctl(handle, IBD_INFO_IBPART, (ibd_ioctl_t *)&ioc);
    if (status != DLADM_STATUS_OK)
        return (status);

    /*
     * Now allocate the memory for the P_Key table based on the table size
     * return by the ioctl.
     */
    ioc.ioc_pkeys = calloc(sizeof (ib_pkey_t), ioc.ioc_pkey_tbl_sz);
    if (ioc.ioc_pkeys == NULL) {
        status = dladm_errno2status(errno);
        goto bail;
    }

    /*
     * Call the ioctl again to get the P_Key table and other IB Phys link
     * attributes.
     */
    ioc.ibdioc.ioc_linkid = linkid;
    ioc.ibdioc.ioc_port_inst = instance;
    ioc.ibdioc.ioc_info_cmd = IBD_INFO_CMD_IBPORT;

    status = i_dladm_ib_ioctl(handle, IBD_INFO_IBPART, (ibd_ioctl_t *)&ioc);
    if (status != DLADM_STATUS_OK)
        goto bail;

    attrp->dia_physlinkid = ioc.ibdioc.ioc_linkid;
    attrp->dia_portnum = ioc.ibdioc.ioc_portnum;
    attrp->dia_port_pkey_tbl_sz = ioc.ioc_pkey_tbl_sz;
    attrp->dia_port_pkeys = ioc.ioc_pkeys;
    attrp->dia_hca_guid = ioc.ibdioc.ioc_hcaguid;
    attrp->dia_port_guid = ioc.ibdioc.ioc_portguid;
    attrp->dia_instance = ioc.ibdioc.ioc_port_inst;
    return (status);
bail:
    free(ioc.ioc_pkeys);
    return (status);
}

/*
 * Free the memory allocated for the IB HCA port's P_Key table by
 * dladm_ib_info library call.
 */
void
dladm_free_ib_info(dladm_ib_attr_t *attr)
{
    if (attr && attr->dia_port_pkeys)
        free(attr->dia_port_pkeys);
}

/*
 * Call into the IP over IB driver to create a partition object.
 */
static dladm_status_t
i_dladm_part_create(dladm_handle_t handle, dladm_part_attr_t *pattr)
{
    ibpart_ioctl_t  ioc;

    bzero(&ioc, sizeof (ioc));

    /* IB Physical datalink ID */
    ioc.ibdioc.ioc_linkid       = pattr->dia_physlinkid;
    /* IB Partition datalink ID */
    ioc.ioc_partid          = pattr->dia_partlinkid;
    ioc.ioc_pkey            = pattr->dia_pkey;
    ioc.ibdioc.ioc_port_inst    = pattr->dia_instance;
    ioc.ioc_force_create        = ((pattr->dia_flags & DLADM_OPT_FORCE)
        != 0);

    return (i_dladm_ib_ioctl(handle, IBD_CREATE_IBPART, &ioc.ibdioc));
}

/*
 * Create an entry in the dladm persistent configuration database for the
 * partition specified by pattr.
 */
dladm_status_t
dladm_part_persist_conf(dladm_handle_t handle, const char *pname,
    dladm_part_attr_t *pattr)
{

    dladm_conf_t    conf;
    dladm_status_t  status;
    char        linkover[MAXLINKNAMELEN];
    uint64_t    u64;

    status = dladm_create_conf(handle, pname, pattr->dia_partlinkid,
        DATALINK_CLASS_PART, DL_IB, &conf);
    if (status != DLADM_STATUS_OK)
        return (status);

    /*
     * Get the name of the IB Phys link over which this partition was
     * created.
     */
    status = dladm_datalink_id2info(handle, pattr->dia_physlinkid,
        NULL, NULL, NULL, linkover, sizeof (linkover));
    if (status != DLADM_STATUS_OK)
        return (status);

    /* Store IB Phys link name (linkover) */
    status = dladm_set_conf_field(handle, conf, FLINKOVER, DLADM_TYPE_STR,
        linkover);
    if (status != DLADM_STATUS_OK)
        return (status);

    u64 = pattr->dia_pkey;

    /* Store the IB Partitions P_Key */
    status = dladm_set_conf_field(handle, conf, FPORTPKEY,
        DLADM_TYPE_UINT64, &u64);
    if (status != DLADM_STATUS_OK)
        return (status);

    if (pattr->dia_flags & DLADM_OPT_FORCE) {
        boolean_t force = B_TRUE;
        /* Store the force create flag. */
        status = dladm_set_conf_field(handle, conf, FFORCE,
            DLADM_TYPE_BOOLEAN, &force);
        if (status != DLADM_STATUS_OK)
            goto done;
    }

    status = dladm_write_conf(handle, conf);
    if (status != DLADM_STATUS_OK)
        return (status);

    dladm_destroy_conf(handle, conf);
done:
    return (status);
}

/*
 * Create a new IB Partition datalink of name 'pname' over the IB Physical link
 * given in 'physlinkid' with the P_key 'pkey' and return the datalink ID in
 * 'partlinkid'. If the 'force' option is set in the 'flags' argument, the
 * partition will be created even if the P_Key 'pkey' does not exist or if the
 * HCA port represented by the IB Phys link is down. If the 'temporary' flag is
 * set, then the configuration information is not added to the persistent
 * database.
 */
dladm_status_t
dladm_part_create(dladm_handle_t handle, datalink_id_t physlinkid,
    ib_pkey_t pkey, uint32_t flags, char *pname, datalink_id_t *partlinkid,
    dladm_arg_list_t *proplist)
{
    int         i;
    dladm_status_t      status;
    uint_t          media;
    boolean_t       part_created = B_FALSE;
    boolean_t       conf_set = B_FALSE;
    dladm_phys_attr_t   dpa;
    dladm_part_attr_t   pattr;

    pattr.dia_pkey = pkey;
    pattr.dia_physlinkid = physlinkid; /* IB Phys link's datalink id */
    pattr.dia_flags = flags;

    flags &= ~DLADM_OPT_FORCE;

    /*
     * Check whether the PKEY is valid. If not, return immediately
     * Only full members are allowed as per the IPoIB specification
     */
    if (pattr.dia_pkey <= IB_PKEY_INVALID_FULL)
        return (DLADM_STATUS_INVALID_PKEY);

    /*
     * Get the media type of the Phys link datalink ID provided and
     * make sure that it is Infiniband media DL_IB)
     */
    if ((status = dladm_datalink_id2info(handle, pattr.dia_physlinkid, NULL,
        NULL, &media, NULL, 0)) != DLADM_STATUS_OK)
        return (status);

    if (media != DL_IB)
        return (dladm_errno2status(ENOTSUP));

    /*
     * Get the instance number of the IP over IB driver instance which the
     * IB Phys link 'physlinkid' over which we will be creating our IB
     * partition.
     */
    if ((status = dladm_phys_info(handle, pattr.dia_physlinkid, &dpa,
        DLADM_OPT_ACTIVE)) != DLADM_STATUS_OK)
        return (status);

    if (dladm_parselink(dpa.dp_dev, NULL, (uint_t *)&pattr.dia_instance) !=
        DLADM_STATUS_OK)
        return (DLADM_STATUS_FAILED);


    if ((status = dladm_create_datalink_id(handle, pname,
        DATALINK_CLASS_PART, DL_IB, flags, &pattr.dia_partlinkid)) !=
        DLADM_STATUS_OK)
        return (status);

    /*
     * Create the IB partition object.
     */
    status = i_dladm_part_create(handle, &pattr);
    if (status != DLADM_STATUS_OK)
        goto done;

    part_created = B_TRUE;

    /*
     * If the persist flag is set then write this partition information
     * to the persistent configuration.
     */
    if (pattr.dia_flags & DLADM_OPT_PERSIST) {
        status = dladm_part_persist_conf(handle, pname, &pattr);
        if (status != DLADM_STATUS_OK)
            goto done;
        conf_set = B_TRUE;
    }

    /*
     * If the name-value pair list of properties were provided set those
     * properties over the datalink.
     */
    if (proplist != NULL) {
        for (i = 0; i < proplist->al_count; i++) {
            dladm_arg_info_t *aip = &proplist->al_info[i];

            status = dladm_set_linkprop(handle,
                pattr.dia_partlinkid, aip->ai_name, aip->ai_val,
                aip->ai_count, pattr.dia_flags);
            if (status != DLADM_STATUS_OK)
                break;
        }
    }
done:
    if (status != DLADM_STATUS_OK) {
        if (conf_set)
            (void) dladm_remove_conf(handle, pattr.dia_partlinkid);
        if (part_created)
            (void) i_dladm_part_delete(handle,
                pattr.dia_partlinkid);
        (void) dladm_destroy_datalink_id(handle, pattr.dia_partlinkid,
            flags);
    }

    if (partlinkid != NULL)
        *partlinkid = pattr.dia_partlinkid;

    return (status);
}

/*
 * Call into the IP over IB driver to delete the IB partition and free up all
 * the resources allocated for it.
 */
static dladm_status_t
i_dladm_part_delete(dladm_handle_t handle, datalink_id_t partid)
{
    ibpart_ioctl_t ioc;

    bzero(&ioc, sizeof (ioc));
    ioc.ioc_partid = partid;
    return (i_dladm_ib_ioctl(handle, IBD_DELETE_IBPART, &ioc.ibdioc));
}

/*
 * Delete an IB partition if 'flags' contains the active flag. Update the
 * persistent configuration if 'flags' contains the persist flag.
 */
dladm_status_t
dladm_part_delete(dladm_handle_t handle, datalink_id_t partid, int flags)
{
    dladm_status_t  status = DLADM_STATUS_OK;
    datalink_class_t class;

    if (flags == 0)
        return (DLADM_STATUS_BADARG);

    /*
     * Make sure that the datalinkid provided is an IB partition class
     * datalink ID.
     */
    if ((dladm_datalink_id2info(handle, partid, NULL, &class, NULL, NULL, 0)
        != DLADM_STATUS_OK))
        return (DLADM_STATUS_BADARG);

    if (class != DATALINK_CLASS_PART)
        return (DLADM_STATUS_BADARG);

    if ((flags & DLADM_OPT_ACTIVE) != 0) {
        status = i_dladm_part_delete(handle, partid);
        if (status == DLADM_STATUS_OK) {
            (void) dladm_set_linkprop(handle, partid, NULL, NULL, 0,
                DLADM_OPT_ACTIVE);
            (void) dladm_destroy_datalink_id(handle, partid,
                DLADM_OPT_ACTIVE);
        } else if (status != DLADM_STATUS_NOTFOUND ||
            !(flags & DLADM_OPT_PERSIST)) {
            return (status);
        }
    }

    if ((flags & DLADM_OPT_PERSIST) != 0) {
        dladm_status_t db_status;
        db_status = dladm_remove_conf(handle, partid);

        /*
         * A partition could have been temporarily deleted in which
         * case the delete of the active partition above would have
         * failed. In that case, we update the status to be returned
         * to that of the status returned for deleting the persistent
         * database entry.
         */
        if (status == DLADM_STATUS_NOTFOUND)
            status = db_status;

        (void) dladm_destroy_datalink_id(handle, partid,
            DLADM_OPT_PERSIST);
    }

    return (status);
}

/*
 * Call into the IP over IB driver to create the active instances of one or all
 * IB partitions present in the persistent configuration.
 */
/* ARGSUSED */
static int
i_dladm_part_up(dladm_handle_t handle, datalink_id_t plinkid, void *arg)
{
    dladm_conf_t    conf;
    datalink_id_t   linkid;
    ib_pkey_t   pkey;
    uint64_t    u64;
    char linkover[MAXLINKNAMELEN];
    dladm_status_t  status;
    dladm_phys_attr_t dpa;
    dladm_part_attr_t pattr;

    /*
     * plinkid is the IB partition datalink's ID. Get an handle to the
     * persistent configuration entry for this datalink ID. If this datalink
     * ID is not present in the persistent configuration return.
     */
    if ((status = dladm_getsnap_conf(handle, plinkid, &conf)) !=
        DLADM_STATUS_OK)
        return (status);

    /*
     * Get the name of the IB Phys link over which this partition was
     * created.
     */
    status = dladm_get_conf_field(handle, conf, FLINKOVER, linkover,
        sizeof (linkover));
    if (status != DLADM_STATUS_OK)
        goto done;

    if ((status = dladm_name2info(handle, linkover, &linkid, NULL, NULL,
        NULL)) != DLADM_STATUS_OK)
        goto done;

    /*
     * Get the phys attribute of the IB Phys link to get the device name
     * associated with the phys link. We need this to get the IP over IB
     * driver instance number.
     */
    if (dladm_phys_info(handle, linkid, &dpa, DLADM_OPT_ACTIVE)
        != DLADM_STATUS_OK)
        goto done;

    /* Get the IB partition's P_key */
    status = dladm_get_conf_field(handle, conf, FPORTPKEY, &u64,
        sizeof (u64));
    if (status != DLADM_STATUS_OK)
        goto done;

    pkey = (ib_pkey_t)u64;

    /*
     * We always set the force flag during dladm_part_up because we want
     * the partition creation to succeed even if the IB HCA port over which
     * the partition is being created is still down. Since dladm_part_up
     * is usually invoked during early boot sequence, it is possible under
     * some IB subnet configurations for dladm_up_part to be called before
     * the IB link negotiation is completed and port state is set to active
     * and P_Key table is updated.
     */
    pattr.dia_flags = DLADM_OPT_FORCE | DLADM_OPT_ACTIVE |
        DLADM_OPT_PERSIST;
    /* IB Phys link's datalink ID. */
    pattr.dia_physlinkid = linkid;
    /* IB Partition's datalink ID. */
    pattr.dia_partlinkid = plinkid;
    pattr.dia_pkey = pkey;
    if (dladm_parselink(dpa.dp_dev, NULL, (uint_t *)&pattr.dia_instance) !=
        DLADM_STATUS_OK)
        return (DLADM_WALK_CONTINUE);

    /* Create the active IB Partition object. */
    if (i_dladm_part_create(handle, &pattr) == DLADM_STATUS_OK &&
        dladm_up_datalink_id(handle, plinkid) != DLADM_STATUS_OK)
        (void) i_dladm_part_delete(handle, linkid);

done:
    dladm_destroy_conf(handle, conf);
    return (DLADM_WALK_CONTINUE);
}

/*
 * Bring up one or all IB partition(s) present in the persistent configuration
 * database. If we need to bring up one IB Partition, its datalink ID is
 * provided in 'linkid'.
 */
/* ARGSUSED */
dladm_status_t
dladm_part_up(dladm_handle_t handle, datalink_id_t linkid, uint32_t flags)
{
    dladm_status_t status = DLADM_STATUS_OK;

    if (linkid == DATALINK_ALL_LINKID) {
        (void) dladm_walk_datalink_id(i_dladm_part_up, handle,
            &status, DATALINK_CLASS_PART, DATALINK_ANY_MEDIATYPE,
            DLADM_OPT_PERSIST);
        return (DLADM_STATUS_OK);
    } else {
        (void) i_dladm_part_up(handle, linkid, &status);
        return (status);
    }
}