/*
* 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 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
*
* MODULE: dapl_ep_free.c
*
* PURPOSE: Endpoint management
* Description: Interfaces in this file are completely described in
* the DAPL 1.1 API, Chapter 6, section 5.4
*
* $Id: dapl_ep_free.c,v 1.21 2003/07/30 18:13:37 hobie16 Exp $
*/
#include "dapl.h"
#include "dapl_ia_util.h"
#include "dapl_ep_util.h"
#include "dapl_adapter_util.h"
#include "dapl_ring_buffer_util.h"
/*
* dapl_ep_free
*
* DAPL Requirements Version xxx, 6.5.3
*
* Destroy an instance of the Endpoint
*
* Input:
* ep_handle
*
* Output:
* none
*
* Returns:
* DAT_SUCCESS
* DAT_INVALID_PARAMETER
* DAT_INVALID_STATE
*/
DAT_RETURN
dapl_ep_free(
IN DAT_EP_HANDLE ep_handle)
{
DAPL_EP *ep_ptr;
DAPL_IA *ia_ptr;
DAT_EP_PARAM *param;
DAT_RETURN dat_status = DAT_SUCCESS;
dapl_dbg_log(DAPL_DBG_TYPE_API, "dapl_ep_free (%p)\n", ep_handle);
ep_ptr = (DAPL_EP *) ep_handle;
param = &ep_ptr->param;
/*
* Verify parameter & state
*/
if (DAPL_BAD_HANDLE(ep_ptr, DAPL_MAGIC_EP) &&
!(ep_ptr->header.magic == DAPL_MAGIC_EP_EXIT &&
ep_ptr->param.ep_state == DAT_EP_STATE_DISCONNECTED)) {
dat_status = DAT_ERROR(DAT_INVALID_HANDLE,
DAT_INVALID_HANDLE_EP);
goto bail;
}
if (ep_ptr->param.ep_state == DAT_EP_STATE_RESERVED ||
ep_ptr->param.ep_state == DAT_EP_STATE_PASSIVE_CONNECTION_PENDING ||
ep_ptr->param.ep_state ==
DAT_EP_STATE_TENTATIVE_CONNECTION_PENDING) {
dapl_dbg_log(DAPL_DBG_TYPE_WARN,
"--> dapl_ep_free: invalid state: %x, ep %p\n",
ep_ptr->param.ep_state, ep_ptr);
dat_status = DAT_ERROR(DAT_INVALID_STATE,
dapls_ep_state_subtype(ep_ptr));
goto bail;
}
ia_ptr = ep_ptr->header.owner_ia;
/*
* If we are connected, issue a disconnect. If we are in the
* disconnect_pending state, disconnect with the ABRUPT flag
* set.
*/
/*
* Do verification of parameters and the state change atomically.
*/
dapl_os_lock(&ep_ptr->header.lock);
if (ep_ptr->param.ep_state == DAT_EP_STATE_CONNECTED ||
ep_ptr->param.ep_state == DAT_EP_STATE_ACTIVE_CONNECTION_PENDING ||
ep_ptr->param.ep_state == DAT_EP_STATE_COMPLETION_PENDING ||
ep_ptr->param.ep_state == DAT_EP_STATE_DISCONNECT_PENDING) {
/*
* Issue the disconnect and return. The DISCONNECT callback
* will invoke this routine and finish the job
*/
ep_ptr->param.ep_state = DAT_EP_STATE_DISCONNECT_PENDING;
dapl_os_unlock(&ep_ptr->header.lock);
dapl_dbg_log(DAPL_DBG_TYPE_EP,
"--> dapl_ep_free: disconnecting EP: %x, ep %p\n",
ep_ptr->param.ep_state, ep_ptr);
dat_status = dapls_ib_disconnect(ep_ptr, DAT_CLOSE_ABRUPT_FLAG);
ep_ptr->param.ep_state = DAT_EP_STATE_DISCONNECT_PENDING;
ep_ptr->header.magic = DAPL_MAGIC_EP_EXIT;
} else {
dapl_os_unlock(&ep_ptr->header.lock);
}
/*
* Release all reference counts and unlink this structure. If we
* got here from a callback, don't repeat this step
*/
if (!(ep_ptr->header.magic == DAPL_MAGIC_EP_EXIT &&
ep_ptr->param.ep_state == DAT_EP_STATE_DISCONNECTED)) {
/* Remove link from the IA */
dapl_ia_unlink_ep(ia_ptr, ep_ptr);
}
/*
* If the EP is disconnected tear everything down. Otherwise,
* disconnect the EP but leave the QP and basic EP structure
* intact; the callback code will finish the job.
*/
dapl_os_lock(&ep_ptr->header.lock);
if (ep_ptr->param.ep_state == DAT_EP_STATE_DISCONNECTED ||
ep_ptr->param.ep_state == DAT_EP_STATE_UNCONNECTED) {
/*
* Update ref counts. Note the user may have used ep_modify
* to set handles to NULL.
*/
if (param->pz_handle != NULL) {
dapl_os_atomic_dec(&((DAPL_PZ *)
param->pz_handle)->pz_ref_count);
param->pz_handle = NULL;
}
if (param->recv_evd_handle != NULL) {
dapl_os_atomic_dec(&((DAPL_EVD *)
param->recv_evd_handle)->evd_ref_count);
param->recv_evd_handle = NULL;
}
if (param->request_evd_handle != NULL) {
dapl_os_atomic_dec(&((DAPL_EVD *)
param->request_evd_handle)->evd_ref_count);
param->request_evd_handle = NULL;
}
if (param->connect_evd_handle != NULL) {
dapl_os_atomic_dec(&((DAPL_EVD *)
param->connect_evd_handle)->evd_ref_count);
param->connect_evd_handle = NULL;
}
if (param->srq_handle != NULL) {
dapl_os_atomic_dec(&((DAPL_SRQ *)
param->srq_handle)->srq_ref_count);
param->srq_handle = NULL;
}
dapl_dbg_log(DAPL_DBG_TYPE_EP,
"--> dapl_ep_free: Free EP: %x, ep %p\n",
ep_ptr->param.ep_state, ep_ptr);
/*
* Free the QP. If the EP has never been used,
* the QP is invalid
*/
if (ep_ptr->qp_handle != IB_INVALID_HANDLE) {
dat_status = dapls_ib_qp_free(ia_ptr, ep_ptr);
/*
* This should always succeed, but report to the user if
* there is a problem
*/
if (dat_status != DAT_SUCCESS) {
goto bail;
}
ep_ptr->qp_handle = IB_INVALID_HANDLE;
}
dapl_os_unlock(&ep_ptr->header.lock);
/* Free the resource */
dapl_ep_dealloc(ep_ptr);
} else {
dapl_os_unlock(&ep_ptr->header.lock);
}
bail:
return (dat_status);
}