6659 nvlist_free(NULL) is a no-op

[illumos-gate.git] / usr / src / lib / libdladm / common / libdlib.c

/*
 * 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);
        }
}