sun_sas/common/Sun_sasGetAdapterPortAttributes.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 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include    <sun_sas.h>

/*
 * Retrieves the attributes for a specified port of an adapter
 */
HBA_STATUS
Sun_sasGetAdapterPortAttributes(HBA_HANDLE handle,
        HBA_UINT32 port, PSMHBA_PORTATTRIBUTES attributes) {
    const char      ROUTINE[] = "Sun_sasGetAdapterPortAttributes";
    HBA_STATUS      status;
    struct sun_sas_hba  *hba_ptr;
    struct sun_sas_port *hba_port_ptr;
    int         index;

    /* Validate the arguments */
    if ((attributes == NULL) ||
        (attributes->PortSpecificAttribute.SASPort == NULL)) {
        log(LOG_DEBUG, ROUTINE, "NULL attributes");
        return (HBA_STATUS_ERROR_ARG);
    }

    lock(&all_hbas_lock);
    index = RetrieveIndex(handle);
    lock(&open_handles_lock);
    hba_ptr = RetrieveHandle(index);
    if (hba_ptr == NULL) {
        log(LOG_DEBUG, ROUTINE, "Invalid handle %08lx", handle);
        unlock(&open_handles_lock);
        unlock(&all_hbas_lock);
        return (HBA_STATUS_ERROR_INVALID_HANDLE);
    }

    /* Check for stale data */
    status = verifyAdapter(hba_ptr);
    if (status != HBA_STATUS_OK) {
        log(LOG_DEBUG, ROUTINE, "Verify Adapter failed");
        unlock(&open_handles_lock);
        unlock(&all_hbas_lock);
        return (status);
    }

    if (hba_ptr->first_port == NULL) {
        /* This is probably an internal failure of the library */
        if (hba_ptr->device_path) {
        log(LOG_DEBUG, ROUTINE,
            "Internal failure:  Adapter %s contains no port data",
            hba_ptr->device_path);
        } else {
        log(LOG_DEBUG, ROUTINE,
            "Internal failure:  Adapter at index %d contains no port "
            "data", hba_ptr->index);
        }
        unlock(&open_handles_lock);
        unlock(&all_hbas_lock);
        return (HBA_STATUS_ERROR);
    }
    for (hba_port_ptr = hba_ptr->first_port;
        hba_port_ptr != NULL; hba_port_ptr = hba_port_ptr->next) {
        if (hba_port_ptr->index == port) {
            break;
        }
    }
    if (hba_port_ptr == NULL || hba_port_ptr->index != port) {
        log(LOG_DEBUG, ROUTINE,
            "Invalid port index %d for handle %08lx.",
            port, handle);
        unlock(&open_handles_lock);
        unlock(&all_hbas_lock);
        return (HBA_STATUS_ERROR_ILLEGAL_INDEX);
    }

    attributes->PortType =  hba_port_ptr->port_attributes.PortType;
    attributes->PortState =  hba_port_ptr->port_attributes.PortState;
    (void) strlcpy(attributes->OSDeviceName,
        hba_port_ptr->port_attributes.OSDeviceName,
        sizeof (attributes->OSDeviceName));
    (void) memcpy(attributes->PortSpecificAttribute.SASPort,
        hba_port_ptr->port_attributes.PortSpecificAttribute.SASPort,
        sizeof (struct SMHBA_SAS_Port));

    unlock(&open_handles_lock);
    unlock(&all_hbas_lock);

    return (HBA_STATUS_OK);
}