/*
 * 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) 2002-2003, Network Appliance, Inc. All rights reserved.
 */

/*
 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*
 *
 * MODULE: dapl_evd_create.c
 *
 * PURPOSE: EVENT management
 *
 * Description: Interfaces in this file are completely defined in
 *              the uDAPL 1.1 API, Chapter 6, section 3
 *
 * $Id: dapl_evd_create.c,v 1.12 2003/08/06 14:04:27 sjs2 Exp $
 */

#include "dapl.h"
#include "dapl_evd_util.h"

/*
 * dapl_evd_create
 *
 * DAPL Requirements Version xxx, 6.3.2.1
 *
 * Create and instance of Event Dispatcher.
 *
 * Input:
 *    ia_handle
 *    cno_handle
 *    evd_min_qlen
 *    evd_flags
 *
 * Output:
 *    evd_handle
 *
 * Returns:
 *     DAT_SUCCESS
 *     DAT_INSUFFICIENT_RESOURCES
 *     DAT_INVALID_PARAMETER
 */

/*
 * ** REVISIT **
 *
 * Selecting the cqe handing domain must still be done.
 * We *probably* want one per hca, but we could have one
 * per provider or one per consumer.
 */
/*
 * Note that if there already is a cq, it is not deleted
 * even if it is not required. However, it will not be armed.
 */

DAT_RETURN dapl_evd_create(
    IN    DAT_IA_HANDLE         ia_handle,
    IN    DAT_COUNT             evd_min_qlen,
    IN    DAT_CNO_HANDLE        cno_handle,
    IN    DAT_EVD_FLAGS         evd_flags,
    OUT   DAT_EVD_HANDLE        *evd_handle)
{
        DAPL_IA                 *ia_ptr;
        DAPL_EVD                *evd_ptr;
        DAPL_CNO                *cno_ptr;
        DAT_RETURN              dat_status;
        DAT_PROVIDER_ATTR       provider_attr = {0};
        int                     i;
        int                     j;
        DAT_EVD_FLAGS           mask[6] = {DAT_EVD_SOFTWARE_FLAG,
            DAT_EVD_CR_FLAG, DAT_EVD_DTO_FLAG, DAT_EVD_CONNECTION_FLAG,
            DAT_EVD_RMR_BIND_FLAG, DAT_EVD_ASYNC_FLAG};

        dapl_dbg_log(DAPL_DBG_TYPE_API,
            "dapl_evd_create (%p, %d, %p, 0x%x, %p)\n",
            ia_handle,
            evd_min_qlen,
            cno_handle,
            evd_flags,
            evd_handle);

        ia_ptr          = (DAPL_IA *)ia_handle;
        cno_ptr         = (DAPL_CNO *)cno_handle;
        evd_ptr         = NULL;
        *evd_handle     = NULL;
        dat_status      = DAT_SUCCESS;

        if (DAPL_BAD_HANDLE(ia_handle, DAPL_MAGIC_IA)) {
                dat_status = DAT_ERROR(DAT_INVALID_HANDLE,
                    DAT_INVALID_HANDLE_IA);
                goto bail;
        }

        if (evd_min_qlen <= 0) {
                dat_status = DAT_ERROR(DAT_INVALID_PARAMETER, DAT_INVALID_ARG2);
                goto bail;
        }
        if (evd_min_qlen > ia_ptr->hca_ptr->ia_attr.max_evd_qlen) {
                dat_status = DAT_ERROR(DAT_INSUFFICIENT_RESOURCES,
                    DAT_RESOURCE_TEVD);
                goto bail;
        }

        if ((cno_handle != DAT_HANDLE_NULL) &&
            DAPL_BAD_HANDLE(cno_handle, DAPL_MAGIC_CNO)) {
                dat_status = DAT_ERROR(DAT_INVALID_HANDLE,
                    DAT_INVALID_HANDLE_CNO);
                goto bail;
        }

        /*
         * Check the merging attributes to ensure the combination of
         * flags requested is supported.
         */
        (void) dapl_ia_query(ia_handle, NULL,
            0, NULL,
            DAT_PROVIDER_FIELD_ALL, &provider_attr);


        for (i = 0; i < 6; i++) {
                if (mask[i] & evd_flags) {
                        for (j = i; j < 6; j++) {
                                if (mask[j] & evd_flags) {
                                        if (provider_attr.
                                            evd_stream_merging_supported[i][j]
                                            == DAT_FALSE) {
                                                dat_status = DAT_ERROR(
                                                    DAT_INVALID_PARAMETER,
                                                    DAT_INVALID_ARG4);
                                                goto bail;
                                        }
                                }
                        } /* end for j */
                }
        } /* end for i */

        dat_status = dapls_evd_internal_create(ia_ptr,
            cno_ptr,
            evd_min_qlen,
            evd_flags,
            &evd_ptr);
        if (dat_status != DAT_SUCCESS) {
                goto bail;
        }

        evd_ptr->evd_state = DAPL_EVD_STATE_OPEN;

        *evd_handle = (DAT_EVD_HANDLE) evd_ptr;

bail:
        if (dat_status != DAT_SUCCESS) {
                if (evd_ptr) {
                        (void) dapl_evd_free(evd_ptr);
                }
        }

        dapl_dbg_log(DAPL_DBG_TYPE_RTN,
            "dapl_evd_create () returns 0x%x\n",
            dat_status);

        return (dat_status);
}