udapl_tavor/common/dapl_rsp_create.c

9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/*
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * CDDL HEADER START
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * The contents of this file are subject to the terms of the
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Common Development and Distribution License (the "License").
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * You may not use this file except in compliance with the License.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * or http://www.opensolaris.org/os/licensing.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * See the License for the specific language governing permissions
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * and limitations under the License.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * When distributing Covered Code, include this CDDL HEADER in each
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * If applicable, add the following below this CDDL HEADER, with the
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * fields enclosed by brackets "[]" replaced with your own identifying
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * information: Portions Copyright [yyyy] [name of copyright owner]
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * CDDL HEADER END
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/*
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Copyright (c) 2002-2003, Network Appliance, Inc. All rights reserved.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/*
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Use is subject to license terms.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/*
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * MODULE: dapl_rsp_create.c
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * PURPOSE: Connection management
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Description: Interfaces in this file are completely described in
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *      the DAPL 1.1 API, Chapter 6, section 4
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * $Id: dapl_rsp_create.c,v 1.14 2003/07/25 19:24:11 sjs2 Exp $
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#include "dapl.h"
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#include "dapl_sp_util.h"
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#include "dapl_ia_util.h"
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#include "dapl_ep_util.h"
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#include "dapl_adapter_util.h"
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/*
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * dapl_rsp_create
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * uDAPL: User Direct Access Program Library Version 1.1, 6.4.3.4.1
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Create a Resereved Service Point with the specified Endpoint
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * that generates at most one Connection Request that is
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * delivered to the specified Event Dispatcher in a notification
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * event
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Input:
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *  ia_handle
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *  conn_qual
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *  ep_handle
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *  evd_handle
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Output:
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *  rsp_handle
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Returns:
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *  DAT_SUCCESS
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *  DAT_INSUFFICIENT_RESOURCES
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *  DAT_INVALID_PARAMETER
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *  DAT_INVALID_STATE
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *  DAT_CONN_QUAL_IN_USE
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor */
9e39c5ba00a55fa05777cc94b148296af305e135Bill TaylorDAT_RETURN
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylordapl_rsp_create(
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    IN DAT_IA_HANDLE ia_handle,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    IN DAT_CONN_QUAL conn_qual,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    IN DAT_EP_HANDLE ep_handle,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    IN DAT_EVD_HANDLE evd_handle,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    OUT DAT_RSP_HANDLE *rsp_handle)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor{
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    DAPL_IA *ia_ptr;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    DAPL_SP *sp_ptr;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    DAPL_EVD *evd_ptr;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    DAPL_EP *ep_ptr;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    DAT_BOOLEAN sp_found;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    DAT_RETURN dat_status;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    dat_status = DAT_SUCCESS;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    ia_ptr = (DAPL_IA *)ia_handle;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    dapl_dbg_log(DAPL_DBG_TYPE_CM,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        ">>> dapl_rsp_free conn_qual: %x EP: %p\n",
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        conn_qual, ep_handle);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    if (DAPL_BAD_HANDLE(ia_ptr, DAPL_MAGIC_IA)) {
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        dat_status = DAT_ERROR(DAT_INVALID_HANDLE,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            DAT_INVALID_HANDLE_IA);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        goto bail;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    }
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    if (DAPL_BAD_HANDLE(ep_handle, DAPL_MAGIC_EP)) {
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        dat_status = DAT_ERROR(DAT_INVALID_HANDLE,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            DAT_INVALID_HANDLE_EP);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        goto bail;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    }
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    if (DAPL_BAD_HANDLE(evd_handle, DAPL_MAGIC_EVD)) {
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        dat_status = DAT_ERROR(DAT_INVALID_HANDLE,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            DAT_INVALID_HANDLE_EVD_CR);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        goto bail;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    }
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    if (rsp_handle == NULL) {
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        dat_status = DAT_ERROR(DAT_INVALID_PARAMETER, DAT_INVALID_ARG5);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        goto bail;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    }
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    ep_ptr = (DAPL_EP *) ep_handle;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    if (ep_ptr->param.ep_state != DAT_EP_STATE_UNCONNECTED) {
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        dat_status = DAT_ERROR(DAT_INVALID_STATE,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            dapls_ep_state_subtype(ep_ptr));
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        goto bail;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    }
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    evd_ptr = (DAPL_EVD *)evd_handle;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    if (!(evd_ptr->evd_flags & DAT_EVD_CR_FLAG)) {
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        dat_status = DAT_ERROR(DAT_INVALID_HANDLE,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            DAT_INVALID_HANDLE_EVD_CR);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        goto bail;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    }
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    sp_ptr = dapls_ia_sp_search(ia_ptr, conn_qual, DAT_FALSE);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    sp_found = DAT_TRUE;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    if (sp_ptr == NULL) {
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        sp_found = DAT_FALSE;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        /* Allocate RSP */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        sp_ptr = dapls_sp_alloc(ia_ptr, DAT_FALSE);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        if (sp_ptr == NULL) {
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            dat_status = DAT_ERROR(DAT_INSUFFICIENT_RESOURCES,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor                DAT_RESOURCE_MEMORY);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            goto bail;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        }
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    }
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    /*
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor     * Fill out the RSP args
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor     */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    sp_ptr->ia_handle  = ia_handle;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    sp_ptr->conn_qual  = conn_qual;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    sp_ptr->evd_handle = evd_handle;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    sp_ptr->psp_flags  = 0;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    sp_ptr->ep_handle  = ep_handle;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    /*
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor     * Take a reference on the EVD handle
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor     */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    (void) dapl_os_atomic_inc(&((DAPL_EVD *)evd_handle)->evd_ref_count);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    /*
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor     * Update the EP state indicating the provider now owns it
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor     */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    ep_ptr->param.ep_state = DAT_EP_STATE_RESERVED;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    /*
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor     * Set up a listener for a connection. Connections can arrive
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor     * even before this call returns!
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor     */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    sp_ptr->state = DAPL_SP_STATE_RSP_LISTENING;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    sp_ptr->listening = DAT_TRUE;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    if (sp_found == DAT_FALSE) {
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    /* Link it onto the IA */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        dapl_ia_link_rsp(ia_ptr, sp_ptr);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        dat_status = dapls_ib_setup_conn_listener(ia_ptr, conn_qual,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            sp_ptr);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        if (dat_status != DAT_SUCCESS) {
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            /*
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor             * Have a problem setting up the connection, something
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor             * wrong!
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor             * rsp_free will decrement the EVD refcount. Set
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor             * listening to * false to avoid tearing down the
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor             * conn_listener which didn't * get set up.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor             */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            sp_ptr->listening = DAT_FALSE;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            (void) dapl_rsp_free((DAT_RSP_HANDLE) sp_ptr);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            dapl_dbg_log(DAPL_DBG_TYPE_CM,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor                "--> dapl_rsp_create setup_conn_listener failed: "
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor                "%x\n",
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor                dat_status);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            goto bail;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        }
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    }
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    /*
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor     * Return handle to the user
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor     */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    *rsp_handle = (DAT_RSP_HANDLE)sp_ptr;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorbail:
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    return (dat_status);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor}