dapl_rsp_free.c revision 9e39c5ba00a55fa05777cc94b148296af305e135
/*
* 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 2003 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
*
* MODULE: dapl_rsp_free.c
*
* PURPOSE: Connection management
* Description: Interfaces in this file are completely described in
* the DAPL 1.1 API, Chapter 6, section 4
*
* $Id: dapl_rsp_free.c,v 1.16 2003/07/25 19:24:11 sjs2 Exp $
*/
#include "dapl.h"
#include "dapl_sp_util.h"
#include "dapl_ia_util.h"
#include "dapl_adapter_util.h"
/*
* dapl_rsp_free
*
* uDAPL: User Direct Access Program Library Version 1.1, 6.4.3.5
*
* Destroy a specific instance of a Reserved Service Point.
*
* Input:
* rsp_handle
*
* Output:
* none
*
* Returns:
* DAT_SUCCESS
* DAT_INVALID_HANDLE
*/
DAT_RETURN
dapl_rsp_free(
IN DAT_RSP_HANDLE rsp_handle)
{
DAPL_IA *ia_ptr;
DAPL_SP *sp_ptr;
DAPL_EP *ep_ptr;
DAT_RETURN dat_status;
dat_status = DAT_SUCCESS;
sp_ptr = (DAPL_SP *)rsp_handle;
/*
* Verify handle
*/
dapl_dbg_log(DAPL_DBG_TYPE_CM,
">>> dapl_rsp_free %p\n",
rsp_handle);
if (DAPL_BAD_HANDLE(sp_ptr, DAPL_MAGIC_RSP)) {
dat_status = DAT_ERROR(DAT_INVALID_HANDLE,
DAT_INVALID_HANDLE_RSP);
goto bail;
}
/* ia_ptr = (DAPL_IA *)sp_ptr->header.owner_ia; */
ia_ptr = sp_ptr->header.owner_ia;
/*
* Remove the connection listener if there are no connections. If
* we defer removing the sp it becomes something of a zombie
* container until disconnection, after which it will be cleaned up.
*/
dapl_os_lock(&sp_ptr->header.lock);
/*
* Make sure we don't leave a dangling EP. If the state is still
* RESERVED then the RSP still owns it.
*/
ep_ptr = (DAPL_EP *)sp_ptr->ep_handle;
if (ep_ptr->param.ep_state == DAT_EP_STATE_RESERVED) {
ep_ptr->param.ep_state = DAT_EP_STATE_UNCONNECTED;
}
sp_ptr->ep_handle = NULL;
/* Release reference on EVD */
dapl_os_atomic_dec(&((DAPL_EVD *)sp_ptr->evd_handle)->evd_ref_count);
sp_ptr->evd_handle = NULL;
/*
* Release the base resource if there are no outstanding connections;
* else the last disconnect on this RSP will free it up. The RSP
* is used to contain CR records for each connection, which
* contain information necessary to disconnect.
*/
if (sp_ptr->listening == DAT_TRUE && sp_ptr->cr_list_count == 0) {
sp_ptr->listening = DAT_FALSE;
sp_ptr->state = DAPL_SP_STATE_FREE;
dapl_os_unlock(&sp_ptr->header.lock);
dat_status = dapls_ib_remove_conn_listener(ia_ptr, sp_ptr);
if (dat_status != DAT_SUCCESS) {
sp_ptr->listening = DAT_TRUE;
sp_ptr->state = DAPL_SP_STATE_RSP_LISTENING;
goto bail;
}
dapls_ia_unlink_sp(ia_ptr, sp_ptr);
dapls_sp_free_sp(sp_ptr);
} else {
/*
* The RSP is now in the pending state, where it will sit until
* the connection terminates or the app uses the same
* ServiceID again, which will reactivate it.
*/
sp_ptr->state = DAPL_SP_STATE_RSP_PENDING;
dapl_os_unlock(&sp_ptr->header.lock);
}
bail:
return (dat_status);
}
/*
* Local variables:
* c-indent-level: 4
* c-basic-offset: 4
* c-brace-offset: -4
* tab-width: 8
* End:
*/