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/*
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* Copyright (c) 2010, Mentor Graphics Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of the <ORGANIZATION> nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <openmcapi.h>
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extern MCAPI_INTERFACE MCAPI_Interface_List[];
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/*************************************************************************
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*
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* FUNCTION
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*
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* mcapi_delete_endpoint
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*
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* DESCRIPTION
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*
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* API routine to delete a specific endpoint on the local node.
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* An endpoint can be deleted only by the node that created the
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* endpoint. All pending incoming messages will be discarded
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* upon deletion. If the endpoint is a packet or scalar, the
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* connection must be closed before deleting the endpoint.
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*
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* INPUTS
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*
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* endpoint The endpoint identifier on the local node
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* to delete.
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* *mcapi_status A pointer to memory that will be filled in
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* with the status of the call.
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*
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* OUTPUTS
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*
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* The endpoint identifier associated with the node ID / port ID
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* combination.
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*
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*************************************************************************/
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void mcapi_delete_endpoint(mcapi_endpoint_t endpoint,
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mcapi_status_t *mcapi_status)
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{
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MCAPI_GLOBAL_DATA *node_data;
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MCAPI_ENDPOINT *endp_ptr = MCAPI_NULL;
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int node_idx;
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mcapi_node_t node_id;
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mcapi_port_t port_id;
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MCAPI_BUFFER *cur_buf;
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/* Ensure mcapi_status is valid. */
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if (mcapi_status)
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{
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/* Get the lock. */
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mcapi_lock_node_data();
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/* Get a pointer to the global node list. */
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node_data = mcapi_get_node_data();
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/* Get a pointer to the endpoint. */
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endp_ptr = mcapi_decode_local_endpoint(node_data, &node_id, &port_id,
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endpoint, mcapi_status);
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/* Ensure the endpoint is valid. */
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if (*mcapi_status == MCAPI_SUCCESS)
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{
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/* Ensure the endpoint is not part of a connected channel. */
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if ( (!(endp_ptr->mcapi_state & MCAPI_ENDP_TX)) &&
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(!(endp_ptr->mcapi_state & MCAPI_ENDP_RX)) )
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{
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/* Get a pointer to the node structure. */
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node_idx = mcapi_find_node(node_id, node_data);
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if (node_idx != -1)
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{
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/* Decrement the number of used endpoints on this node. */
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node_data->mcapi_node_list[node_idx].mcapi_endpoint_count --;
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/* If the endpoint is part of a half-open connection. */
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if (endp_ptr->mcapi_state & MCAPI_ENDP_CONNECTING)
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{
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/* Close the connection. */
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mcapi_tx_fin_msg(endp_ptr, mcapi_status);
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}
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/* Cancel any threads blocking on this endpoint and set an
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* error in the request structure.
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*/
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mcapi_check_resume(MCAPI_REQ_DELETED, endpoint, MCAPI_NULL, 0,
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MCAPI_ERR_PORT_INVALID);
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/* Set the state of the entry to closed. */
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endp_ptr->mcapi_state = MCAPI_ENDP_CLOSED;
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/* Remove the first buffer from the receive queue. */
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cur_buf = mcapi_dequeue(&endp_ptr->mcapi_rx_queue);
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/* If there is data pending on the endpoint, free it. */
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while (cur_buf)
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{
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/* Remove the buffer from the receive queue and place
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* it on the free list.
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*/
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((MCAPI_INTERFACE*)(cur_buf->mcapi_dev_ptr))->
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mcapi_recover_buffer(cur_buf);
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/* Get the next buffer. */
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cur_buf = mcapi_dequeue(&endp_ptr->mcapi_rx_queue);
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}
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*mcapi_status = MCAPI_SUCCESS;
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}
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else
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{
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*mcapi_status = MCAPI_ERR_ENDP_INVALID;
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}
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}
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/* Channel must be closed before deleting an endpoint. */
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else
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{
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*mcapi_status = MCAPI_ERR_CHAN_OPEN;
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}
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}
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/* Release the lock. */
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mcapi_unlock_node_data();
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}
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}
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