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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_endpoint_t MCAPI_CTRL_RX_Endp;
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extern mcapi_endpoint_t MCAPI_CTRL_TX_Endp;
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extern MCAPI_BUF_QUEUE MCAPI_RX_Queue[MCAPI_PRIO_COUNT];
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static void mcapi_connect_endpoints(MCAPI_GLOBAL_DATA *, unsigned char *,
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mcapi_status_t *);
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static void mcapi_setup_connection(MCAPI_GLOBAL_DATA *, MCAPI_ENDPOINT *,
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unsigned char *, mcapi_status_t *, mcapi_uint16_t);
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static void send_connect_response(unsigned char *, mcapi_status_t);
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/*************************************************************************
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*
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* FUNCTION
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*
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* mcapi_process_ctrl_msg
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*
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* DESCRIPTION
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*
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* Processes incoming control messages sent from other nodes in
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* the system.
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*
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* INPUTS
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*
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* None.
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*
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* OUTPUTS
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*
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* None.
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*
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*************************************************************************/
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MCAPI_THREAD_ENTRY(mcapi_process_ctrl_msg)
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{
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mcapi_status_t mcapi_status;
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unsigned char buffer[MCAPI_CONTROL_MSG_LEN];
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mcapi_request_t *request, mcapi_request;
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size_t rx_size;
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MCAPI_GLOBAL_DATA *node_data;
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mcapi_node_t node_id;
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mcapi_port_t port_id;
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MCAPI_ENDPOINT *endp_ptr;
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mcapi_endpoint_t endpoint;
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/* This loop is active while the node is up and running. */
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for (;;)
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{
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/* Wait for data on the endpoint. */
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mcapi_msg_recv(MCAPI_CTRL_RX_Endp, &buffer,
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MCAPI_CONTROL_MSG_LEN,
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&rx_size, &mcapi_status);
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/* If a control message was received. */
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if ( (mcapi_status == MCAPI_SUCCESS) && (rx_size) )
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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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/* Determine the type of message. */
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switch (MCAPI_GET16(buffer, MCAPI_PROT_TYPE))
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{
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case MCAPI_GETENDP_REQUEST:
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/* Extract the target port from the packet. */
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port_id = MCAPI_GET16(buffer, MCAPI_GETENDP_PORT);
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/* Get a pointer to the endpoint. */
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endp_ptr = mcapi_find_local_endpoint(node_data,
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MCAPI_Node_ID,
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port_id);
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/* If the endpoint was found. */
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if (endp_ptr)
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{
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/* Set the type. */
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MCAPI_PUT16(buffer, MCAPI_PROT_TYPE,
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MCAPI_GETENDP_RESPONSE);
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/* Set the status. */
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MCAPI_PUT32(buffer, MCAPI_GETENDP_STATUS, MCAPI_SUCCESS);
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/* Extract the destination endpoint. */
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endpoint = MCAPI_GET32(buffer, MCAPI_GETENDP_ENDP);
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/* Put the target endpoint in the buffer. */
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MCAPI_PUT32(buffer, MCAPI_GETENDP_ENDP,
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mcapi_encode_endpoint(endp_ptr->mcapi_node_id,
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endp_ptr->mcapi_port_id));
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/* Send the packet back to the caller. */
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msg_send(MCAPI_CTRL_TX_Endp, endpoint, buffer,
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MCAPI_GET_ENDP_LEN, MCAPI_DEFAULT_PRIO,
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&mcapi_request, &mcapi_status, 0xffffffff);
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}
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/* The endpoint has not been created. */
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else
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{
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/* Decode the requestor's information. */
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mcapi_decode_endpoint(MCAPI_GET32(buffer, MCAPI_GETENDP_ENDP),
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&node_id, &port_id);
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/* Ensure another thread on this same remote node
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* is not already waiting for the endpoint to be
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* created.
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*/
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request = node_data->mcapi_foreign_req_queue.flink;
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/* Check each request. */
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while (request)
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{
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/* If this is an endpoint request for the same endpoint
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* from the same node, do not add it again since all
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* tasks waiting for this endpoint will be resumed by
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* one call.
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*/
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if ( (request->mcapi_type == MCAPI_REQ_CREATED) &&
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(request->mcapi_target_node_id == MCAPI_Node_ID) &&
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(request->mcapi_target_port_id ==
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MCAPI_GET16(buffer, MCAPI_GETENDP_PORT)) &&
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(request->mcapi_requesting_node_id == node_id) )
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{
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request->mcapi_pending_count ++;
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break;
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}
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request = request->mcapi_next;
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}
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/* If the remote node is not already pending creation
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* of the target endpoint.
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*/
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if (!request)
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{
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/* Reserve a global request structure. */
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request = mcapi_get_free_request_struct();
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/* If a free structure is available. */
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if (request)
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{
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/* Set the type. */
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request->mcapi_type = MCAPI_REQ_CREATED;
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/* Set up the request structure. */
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request->mcapi_target_port_id =
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MCAPI_GET16(buffer, MCAPI_GETENDP_PORT);
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request->mcapi_target_node_id = MCAPI_Node_ID;
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request->mcapi_requesting_node_id = node_id;
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request->mcapi_requesting_port_id = port_id;
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request->mcapi_status = MCAPI_PENDING;
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request->mcapi_pending_count = 1;
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/* Add the structure to the wait list. */
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mcapi_enqueue(&node_data->mcapi_foreign_req_queue, request);
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}
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/* Otherwise, send an error to the caller. */
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else
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{
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/* Set an error. */
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MCAPI_PUT32(buffer, MCAPI_GETENDP_STATUS,
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(mcapi_uint32_t)MCAPI_ERR_REQUEST_LIMIT);
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| 198 |
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/* Set the type. */
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MCAPI_PUT16(buffer, MCAPI_PROT_TYPE,
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MCAPI_GETENDP_RESPONSE);
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/* Extract the destination endpoint. */
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endpoint = MCAPI_GET32(buffer, MCAPI_GETENDP_ENDP);
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/* Put the target endpoint in the packet. */
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MCAPI_PUT32(buffer, MCAPI_GETENDP_ENDP,
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mcapi_encode_endpoint(MCAPI_Node_ID, port_id));
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| 208 |
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| 209 |
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/* Send the packet back to the caller. */
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msg_send(MCAPI_CTRL_TX_Endp, endpoint, buffer,
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MCAPI_GET_ENDP_LEN, MCAPI_DEFAULT_PRIO,
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&mcapi_request, &mcapi_status, 0xffffffff);
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}
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}
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}
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break;
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| 219 |
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case MCAPI_GETENDP_RESPONSE:
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/* Extract the status from the packet. */
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mcapi_status = MCAPI_GET32(buffer, MCAPI_GETENDP_STATUS);
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| 223 |
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| 224 |
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/* Wake the task that requested this data. */
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mcapi_check_resume(MCAPI_REQ_CREATED,
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MCAPI_GET32(buffer, MCAPI_GETENDP_ENDP),
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MCAPI_NULL, 0, mcapi_status);
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| 228 |
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| 229 |
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break;
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| 230 |
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| 231 |
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case MCAPI_CANCEL_MSG:
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| 233 |
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/* Decode the requestor's information. */
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| 234 |
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mcapi_decode_endpoint(MCAPI_GET32(buffer, MCAPI_GETENDP_ENDP),
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&node_id, &port_id);
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| 236 |
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| 237 |
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/* Find the request message in the list. */
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| 238 |
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request = node_data->mcapi_foreign_req_queue.flink;
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| 239 |
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| 240 |
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/* Check each request. */
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| 241 |
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while (request)
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| 242 |
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{
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| 243 |
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/* If this request matches. */
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| 244 |
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if ( (request->mcapi_type == MCAPI_REQ_CREATED) &&
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| 245 |
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(request->mcapi_target_node_id == MCAPI_Node_ID) &&
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| 246 |
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(request->mcapi_target_port_id ==
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| 247 |
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MCAPI_GET16(buffer, MCAPI_GETENDP_PORT)) &&
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| 248 |
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(request->mcapi_requesting_node_id == node_id) )
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| 249 |
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{
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| 250 |
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/* Decrement the number of tasks pending completion
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| 251 |
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* of this request.
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| 252 |
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*/
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| 253 |
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request->mcapi_pending_count --;
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| 254 |
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| 255 |
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/* If this was the only task waiting for the request
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| 256 |
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* to complete.
|
| 257 |
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*/
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| 258 |
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if (request->mcapi_pending_count == 0)
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| 259 |
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{
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| 260 |
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/* Remove the request from the list. */
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| 261 |
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mcapi_remove(&node_data->mcapi_foreign_req_queue, request);
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| 262 |
|
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}
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| 263 |
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| 264 |
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break;
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| 265 |
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}
|
| 266 |
|
|
|
| 267 |
|
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/* Get the next request. */
|
| 268 |
|
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request = request->mcapi_next;
|
| 269 |
|
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}
|
| 270 |
|
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|
| 271 |
|
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break;
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| 272 |
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|
| 273 |
|
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case MCAPI_CONNECT_REQUEST:
|
| 274 |
|
|
|
| 275 |
|
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/* If the node ID of the send side is the local node,
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| 276 |
|
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* connect the send side. The requestor should only
|
| 277 |
|
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* send the connection request to the send side.
|
| 278 |
|
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*/
|
| 279 |
|
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if (MCAPI_GET16(buffer, MCAPI_CNCT_TX_NODE) == MCAPI_Node_ID)
|
| 280 |
|
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{
|
| 281 |
|
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/* Send a SYN request to the receive side. */
|
| 282 |
|
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mcapi_connect_endpoints(node_data, buffer, &mcapi_status);
|
| 283 |
|
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|
| 284 |
|
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/* If the connection is not possible, send an error
|
| 285 |
|
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* to the caller.
|
| 286 |
|
|
*/
|
| 287 |
|
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if (mcapi_status != MCAPI_SUCCESS)
|
| 288 |
|
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{
|
| 289 |
|
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/* Send the response. */
|
| 290 |
|
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send_connect_response(buffer, mcapi_status);
|
| 291 |
|
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}
|
| 292 |
|
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}
|
| 293 |
|
|
|
| 294 |
|
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break;
|
| 295 |
|
|
|
| 296 |
|
|
case MCAPI_CONNECT_SYN:
|
| 297 |
|
|
|
| 298 |
|
|
/* Extract the node ID and port ID. */
|
| 299 |
|
|
node_id = MCAPI_GET16(buffer, MCAPI_CNCT_RX_NODE);
|
| 300 |
|
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port_id = MCAPI_GET16(buffer, MCAPI_CNCT_RX_PORT);
|
| 301 |
|
|
|
| 302 |
|
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/* Get a pointer to the endpoint. */
|
| 303 |
|
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endp_ptr = mcapi_find_local_endpoint(node_data, node_id,
|
| 304 |
|
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port_id);
|
| 305 |
|
|
|
| 306 |
|
|
/* If the endpoint was found. */
|
| 307 |
|
|
if (endp_ptr)
|
| 308 |
|
|
{
|
| 309 |
|
|
/* Make the call to set up the connection. */
|
| 310 |
|
|
mcapi_setup_connection(node_data, endp_ptr, buffer,
|
| 311 |
|
|
&mcapi_status, MCAPI_RX_SIDE);
|
| 312 |
|
|
}
|
| 313 |
|
|
|
| 314 |
|
|
/* The endpoint is not valid. */
|
| 315 |
|
|
else
|
| 316 |
|
|
{
|
| 317 |
|
|
mcapi_status = MCAPI_ERR_ENDP_INVALID;
|
| 318 |
|
|
}
|
| 319 |
|
|
|
| 320 |
|
|
/* Set the type to ACK. */
|
| 321 |
|
|
MCAPI_PUT16(buffer, MCAPI_PROT_TYPE, MCAPI_CONNECT_ACK);
|
| 322 |
|
|
|
| 323 |
|
|
/* Set the status. */
|
| 324 |
|
|
MCAPI_PUT32(buffer, MCAPI_CNCT_STATUS, mcapi_status);
|
| 325 |
|
|
|
| 326 |
|
|
/* Send the status response to the transmit node. */
|
| 327 |
|
|
msg_send(MCAPI_CTRL_TX_Endp,
|
| 328 |
|
|
mcapi_encode_endpoint(MCAPI_GET16(buffer, MCAPI_CNCT_TX_NODE),
|
| 329 |
|
|
MCAPI_RX_CONTROL_PORT), buffer,
|
| 330 |
|
|
MCAPI_CONNECT_MSG_LEN, MCAPI_DEFAULT_PRIO,
|
| 331 |
|
|
&mcapi_request, &mcapi_status, 0xffffffff);
|
| 332 |
|
|
|
| 333 |
|
|
/* If the request was successful. */
|
| 334 |
|
|
if (mcapi_status == MCAPI_SUCCESS)
|
| 335 |
|
|
{
|
| 336 |
|
|
/* If the open call has been made from the application,
|
| 337 |
|
|
* send the open request to the send side.
|
| 338 |
|
|
*/
|
| 339 |
|
|
if ( (endp_ptr) &&
|
| 340 |
|
|
(endp_ptr->mcapi_state & MCAPI_ENDP_RX) )
|
| 341 |
|
|
{
|
| 342 |
|
|
/* Send the open call to the other side. */
|
| 343 |
|
|
mcapi_tx_open(buffer, endp_ptr,
|
| 344 |
|
|
endp_ptr->mcapi_foreign_node_id,
|
| 345 |
|
|
endp_ptr->mcapi_foreign_port_id,
|
| 346 |
|
|
endp_ptr->mcapi_node_id,
|
| 347 |
|
|
endp_ptr->mcapi_port_id, MCAPI_OPEN_RX,
|
| 348 |
|
|
MCAPI_GET16(buffer, MCAPI_CNCT_CHAN_TYPE),
|
| 349 |
|
|
&mcapi_status);
|
| 350 |
|
|
}
|
| 351 |
|
|
}
|
| 352 |
|
|
|
| 353 |
|
|
break;
|
| 354 |
|
|
|
| 355 |
|
|
case MCAPI_CONNECT_ACK:
|
| 356 |
|
|
|
| 357 |
|
|
/* Extract the node ID and port ID. */
|
| 358 |
|
|
node_id = MCAPI_GET16(buffer, MCAPI_CNCT_TX_NODE);
|
| 359 |
|
|
port_id = MCAPI_GET16(buffer, MCAPI_CNCT_TX_PORT);
|
| 360 |
|
|
|
| 361 |
|
|
/* Get a pointer to the endpoint. */
|
| 362 |
|
|
endp_ptr = mcapi_find_local_endpoint(node_data, node_id,
|
| 363 |
|
|
port_id);
|
| 364 |
|
|
|
| 365 |
|
|
/* Get the status from the packet. */
|
| 366 |
|
|
mcapi_status = MCAPI_GET32(buffer, MCAPI_CNCT_STATUS);
|
| 367 |
|
|
|
| 368 |
|
|
/* Ensure the endpoint wasn't deleted while waiting for
|
| 369 |
|
|
* the ACK from the other side.
|
| 370 |
|
|
*/
|
| 371 |
|
|
if (endp_ptr)
|
| 372 |
|
|
{
|
| 373 |
|
|
/* If the status is success, open the connection. */
|
| 374 |
|
|
if (mcapi_status == MCAPI_SUCCESS)
|
| 375 |
|
|
{
|
| 376 |
|
|
mcapi_setup_connection(node_data, endp_ptr, buffer,
|
| 377 |
|
|
&mcapi_status, MCAPI_TX_SIDE);
|
| 378 |
|
|
|
| 379 |
|
|
/* If the open call has been made by the application,
|
| 380 |
|
|
* send the open request to the receive side.
|
| 381 |
|
|
*/
|
| 382 |
|
|
if (endp_ptr->mcapi_state & MCAPI_ENDP_TX)
|
| 383 |
|
|
{
|
| 384 |
|
|
/* Send the open call to the other side. */
|
| 385 |
|
|
mcapi_tx_open(buffer, endp_ptr,
|
| 386 |
|
|
endp_ptr->mcapi_node_id,
|
| 387 |
|
|
endp_ptr->mcapi_port_id,
|
| 388 |
|
|
endp_ptr->mcapi_foreign_node_id,
|
| 389 |
|
|
endp_ptr->mcapi_foreign_port_id,
|
| 390 |
|
|
MCAPI_OPEN_TX,
|
| 391 |
|
|
MCAPI_GET16(buffer, MCAPI_CNCT_CHAN_TYPE),
|
| 392 |
|
|
&mcapi_status);
|
| 393 |
|
|
}
|
| 394 |
|
|
}
|
| 395 |
|
|
|
| 396 |
|
|
/* The other side could not open the connection. */
|
| 397 |
|
|
else
|
| 398 |
|
|
{
|
| 399 |
|
|
/* Clear the "connecting" flag since this connection
|
| 400 |
|
|
* could not be made.
|
| 401 |
|
|
*/
|
| 402 |
|
|
endp_ptr->mcapi_state &= ~MCAPI_ENDP_CONNECTING;
|
| 403 |
|
|
}
|
| 404 |
|
|
}
|
| 405 |
|
|
|
| 406 |
|
|
/* Send the response to the requestor. If the endpoint was
|
| 407 |
|
|
* deleted, it's OK to report success to the connection
|
| 408 |
|
|
* requestor since an error will be returned to the
|
| 409 |
|
|
* RX side when it tries to open.
|
| 410 |
|
|
*/
|
| 411 |
|
|
send_connect_response(buffer, mcapi_status);
|
| 412 |
|
|
|
| 413 |
|
|
break;
|
| 414 |
|
|
|
| 415 |
|
|
case MCAPI_OPEN_TX:
|
| 416 |
|
|
|
| 417 |
|
|
mcapi_status = MCAPI_SUCCESS;
|
| 418 |
|
|
|
| 419 |
|
|
/* Extract the node ID and port ID. */
|
| 420 |
|
|
node_id = MCAPI_GET16(buffer, MCAPI_CNCT_RX_NODE);
|
| 421 |
|
|
port_id = MCAPI_GET16(buffer, MCAPI_CNCT_RX_PORT);
|
| 422 |
|
|
|
| 423 |
|
|
/* Get a pointer to the endpoint. */
|
| 424 |
|
|
endp_ptr = mcapi_find_local_endpoint(node_data, node_id,
|
| 425 |
|
|
port_id);
|
| 426 |
|
|
|
| 427 |
|
|
/* If the endpoint was found. */
|
| 428 |
|
|
if (endp_ptr)
|
| 429 |
|
|
{
|
| 430 |
|
|
/* Set the state to indicate the send side has
|
| 431 |
|
|
* opened.
|
| 432 |
|
|
*/
|
| 433 |
|
|
endp_ptr->mcapi_state |= MCAPI_ENDP_TX_ACKED;
|
| 434 |
|
|
|
| 435 |
|
|
/* If the receive side has also opened. */
|
| 436 |
|
|
if (endp_ptr->mcapi_state & MCAPI_ENDP_RX_ACKED)
|
| 437 |
|
|
{
|
| 438 |
|
|
/* Indicate that the connection is complete. */
|
| 439 |
|
|
endp_ptr->mcapi_state |= MCAPI_ENDP_CONNECTED;
|
| 440 |
|
|
|
| 441 |
|
|
/* Check if any tasks are waiting for the receive side
|
| 442 |
|
|
* to be opened.
|
| 443 |
|
|
*/
|
| 444 |
|
|
mcapi_check_resume(MCAPI_REQ_RX_OPEN,
|
| 445 |
|
|
endp_ptr->mcapi_endp_handle,
|
| 446 |
|
|
MCAPI_NULL, 0, mcapi_status);
|
| 447 |
|
|
}
|
| 448 |
|
|
}
|
| 449 |
|
|
|
| 450 |
|
|
else
|
| 451 |
|
|
{
|
| 452 |
|
|
mcapi_status = MCAPI_ERR_ENDP_INVALID;
|
| 453 |
|
|
}
|
| 454 |
|
|
|
| 455 |
|
|
/* Set the type to TX_ACK. */
|
| 456 |
|
|
MCAPI_PUT16(buffer, MCAPI_PROT_TYPE, MCAPI_OPEN_TX_ACK);
|
| 457 |
|
|
|
| 458 |
|
|
/* Put the status in the packet. */
|
| 459 |
|
|
MCAPI_PUT32(buffer, MCAPI_CNCT_STATUS, mcapi_status);
|
| 460 |
|
|
|
| 461 |
|
|
/* Send a status back to the send side so they
|
| 462 |
|
|
* know whether the connection should proceed.
|
| 463 |
|
|
*/
|
| 464 |
|
|
msg_send(MCAPI_CTRL_TX_Endp,
|
| 465 |
|
|
mcapi_encode_endpoint(MCAPI_GET16(buffer,
|
| 466 |
|
|
MCAPI_CNCT_TX_NODE), MCAPI_RX_CONTROL_PORT),
|
| 467 |
|
|
buffer, MCAPI_CONNECT_MSG_LEN,
|
| 468 |
|
|
MCAPI_DEFAULT_PRIO,
|
| 469 |
|
|
&mcapi_request, &mcapi_status, 0xffffffff);
|
| 470 |
|
|
|
| 471 |
|
|
break;
|
| 472 |
|
|
|
| 473 |
|
|
case MCAPI_OPEN_RX:
|
| 474 |
|
|
|
| 475 |
|
|
mcapi_status = MCAPI_SUCCESS;
|
| 476 |
|
|
|
| 477 |
|
|
/* Extract the node ID and port ID. */
|
| 478 |
|
|
node_id = MCAPI_GET16(buffer, MCAPI_CNCT_TX_NODE);
|
| 479 |
|
|
port_id = MCAPI_GET16(buffer, MCAPI_CNCT_TX_PORT);
|
| 480 |
|
|
|
| 481 |
|
|
/* Get a pointer to the endpoint. */
|
| 482 |
|
|
endp_ptr = mcapi_find_local_endpoint(node_data, node_id,
|
| 483 |
|
|
port_id);
|
| 484 |
|
|
|
| 485 |
|
|
/* If the endpoint was found. */
|
| 486 |
|
|
if (endp_ptr)
|
| 487 |
|
|
{
|
| 488 |
|
|
/* Set the state to indicate the other side has
|
| 489 |
|
|
* opened.
|
| 490 |
|
|
*/
|
| 491 |
|
|
endp_ptr->mcapi_state |= MCAPI_ENDP_RX_ACKED;
|
| 492 |
|
|
|
| 493 |
|
|
/* If the send side has opened and been ACKed. */
|
| 494 |
|
|
if (endp_ptr->mcapi_state & MCAPI_ENDP_TX_ACKED)
|
| 495 |
|
|
{
|
| 496 |
|
|
/* Indicate that the connection is completed. */
|
| 497 |
|
|
endp_ptr->mcapi_state |= MCAPI_ENDP_CONNECTED;
|
| 498 |
|
|
|
| 499 |
|
|
/* Check if any tasks are waiting for the send side
|
| 500 |
|
|
* to be opened.
|
| 501 |
|
|
*/
|
| 502 |
|
|
mcapi_check_resume(MCAPI_REQ_TX_OPEN,
|
| 503 |
|
|
endp_ptr->mcapi_endp_handle,
|
| 504 |
|
|
MCAPI_NULL, 0, mcapi_status);
|
| 505 |
|
|
}
|
| 506 |
|
|
}
|
| 507 |
|
|
|
| 508 |
|
|
else
|
| 509 |
|
|
{
|
| 510 |
|
|
mcapi_status = MCAPI_ERR_ENDP_INVALID;
|
| 511 |
|
|
}
|
| 512 |
|
|
|
| 513 |
|
|
/* Set the type to RX_ACK. */
|
| 514 |
|
|
MCAPI_PUT16(buffer, MCAPI_PROT_TYPE, MCAPI_OPEN_RX_ACK);
|
| 515 |
|
|
|
| 516 |
|
|
/* Put the status in the packet. */
|
| 517 |
|
|
MCAPI_PUT32(buffer, MCAPI_CNCT_STATUS, mcapi_status);
|
| 518 |
|
|
|
| 519 |
|
|
/* Send a status back to the receive side so they
|
| 520 |
|
|
* know whether the connection should proceed.
|
| 521 |
|
|
*/
|
| 522 |
|
|
msg_send(MCAPI_CTRL_TX_Endp,
|
| 523 |
|
|
mcapi_encode_endpoint(MCAPI_GET16(buffer,
|
| 524 |
|
|
MCAPI_CNCT_RX_NODE), MCAPI_RX_CONTROL_PORT),
|
| 525 |
|
|
buffer, MCAPI_CONNECT_MSG_LEN,
|
| 526 |
|
|
MCAPI_DEFAULT_PRIO,
|
| 527 |
|
|
&mcapi_request, &mcapi_status, 0xffffffff);
|
| 528 |
|
|
|
| 529 |
|
|
break;
|
| 530 |
|
|
|
| 531 |
|
|
case MCAPI_OPEN_RX_ACK:
|
| 532 |
|
|
|
| 533 |
|
|
/* Extract the node ID and port ID. */
|
| 534 |
|
|
node_id = MCAPI_GET16(buffer, MCAPI_CNCT_RX_NODE);
|
| 535 |
|
|
port_id = MCAPI_GET16(buffer, MCAPI_CNCT_RX_PORT);
|
| 536 |
|
|
|
| 537 |
|
|
/* Get a pointer to the endpoint. */
|
| 538 |
|
|
endp_ptr = mcapi_find_local_endpoint(node_data, node_id,
|
| 539 |
|
|
port_id);
|
| 540 |
|
|
|
| 541 |
|
|
/* If the endpoint was found. */
|
| 542 |
|
|
if (endp_ptr)
|
| 543 |
|
|
{
|
| 544 |
|
|
/* Extract the status from the packet. */
|
| 545 |
|
|
mcapi_status = MCAPI_GET32(buffer, MCAPI_CNCT_STATUS);
|
| 546 |
|
|
|
| 547 |
|
|
/* If the ACK is successful. */
|
| 548 |
|
|
if (mcapi_status == MCAPI_SUCCESS)
|
| 549 |
|
|
{
|
| 550 |
|
|
/* Set the flag indicating that the RX side is
|
| 551 |
|
|
* open.
|
| 552 |
|
|
*/
|
| 553 |
|
|
endp_ptr->mcapi_state |= MCAPI_ENDP_RX_ACKED;
|
| 554 |
|
|
|
| 555 |
|
|
/* If both sides have issued successful open calls. */
|
| 556 |
|
|
if (endp_ptr->mcapi_state & MCAPI_ENDP_TX_ACKED)
|
| 557 |
|
|
{
|
| 558 |
|
|
/* Indicate that the connection is connected. */
|
| 559 |
|
|
endp_ptr->mcapi_state |= MCAPI_ENDP_CONNECTED;
|
| 560 |
|
|
|
| 561 |
|
|
/* Check if any tasks are waiting for the receive side
|
| 562 |
|
|
* to be opened.
|
| 563 |
|
|
*/
|
| 564 |
|
|
mcapi_check_resume(MCAPI_REQ_RX_OPEN,
|
| 565 |
|
|
endp_ptr->mcapi_endp_handle,
|
| 566 |
|
|
MCAPI_NULL, 0, mcapi_status);
|
| 567 |
|
|
}
|
| 568 |
|
|
}
|
| 569 |
|
|
|
| 570 |
|
|
else
|
| 571 |
|
|
{
|
| 572 |
|
|
/* Clear the flag. */
|
| 573 |
|
|
endp_ptr->mcapi_state &= ~MCAPI_ENDP_RX;
|
| 574 |
|
|
|
| 575 |
|
|
/* Check if any tasks are waiting for the receive side
|
| 576 |
|
|
* to be opened.
|
| 577 |
|
|
*/
|
| 578 |
|
|
mcapi_check_resume(MCAPI_REQ_RX_OPEN,
|
| 579 |
|
|
endp_ptr->mcapi_endp_handle,
|
| 580 |
|
|
MCAPI_NULL, 0, mcapi_status);
|
| 581 |
|
|
}
|
| 582 |
|
|
}
|
| 583 |
|
|
|
| 584 |
|
|
break;
|
| 585 |
|
|
|
| 586 |
|
|
case MCAPI_OPEN_TX_ACK:
|
| 587 |
|
|
|
| 588 |
|
|
/* Extract the status from the packet. */
|
| 589 |
|
|
mcapi_status = MCAPI_GET32(buffer, MCAPI_CNCT_STATUS);
|
| 590 |
|
|
|
| 591 |
|
|
/* Extract the node ID and port ID. */
|
| 592 |
|
|
node_id = MCAPI_GET16(buffer, MCAPI_CNCT_TX_NODE);
|
| 593 |
|
|
port_id = MCAPI_GET16(buffer, MCAPI_CNCT_TX_PORT);
|
| 594 |
|
|
|
| 595 |
|
|
/* Get a pointer to the endpoint. */
|
| 596 |
|
|
endp_ptr =
|
| 597 |
|
|
mcapi_find_local_endpoint(node_data, node_id, port_id);
|
| 598 |
|
|
|
| 599 |
|
|
/* If the endpoint was found. */
|
| 600 |
|
|
if (endp_ptr)
|
| 601 |
|
|
{
|
| 602 |
|
|
/* If the status of the ACK is success. */
|
| 603 |
|
|
if (mcapi_status == MCAPI_SUCCESS)
|
| 604 |
|
|
{
|
| 605 |
|
|
/* Set the state to indicate that the TX side
|
| 606 |
|
|
* is open.
|
| 607 |
|
|
*/
|
| 608 |
|
|
endp_ptr->mcapi_state |= MCAPI_ENDP_TX_ACKED;
|
| 609 |
|
|
|
| 610 |
|
|
/* If both sides have issued successful open calls. */
|
| 611 |
|
|
if (endp_ptr->mcapi_state & MCAPI_ENDP_RX_ACKED)
|
| 612 |
|
|
{
|
| 613 |
|
|
/* Indicate that the connection is connected. */
|
| 614 |
|
|
endp_ptr->mcapi_state |= MCAPI_ENDP_CONNECTED;
|
| 615 |
|
|
|
| 616 |
|
|
/* Check if any tasks are waiting for the send side
|
| 617 |
|
|
* to be opened.
|
| 618 |
|
|
*/
|
| 619 |
|
|
mcapi_check_resume(MCAPI_REQ_TX_OPEN,
|
| 620 |
|
|
endp_ptr->mcapi_endp_handle,
|
| 621 |
|
|
MCAPI_NULL, 0, mcapi_status);
|
| 622 |
|
|
}
|
| 623 |
|
|
}
|
| 624 |
|
|
|
| 625 |
|
|
else
|
| 626 |
|
|
{
|
| 627 |
|
|
/* Clear the transmit and connecting flags. */
|
| 628 |
|
|
endp_ptr->mcapi_state &= ~MCAPI_ENDP_TX;
|
| 629 |
|
|
|
| 630 |
|
|
/* Check if any tasks are waiting for the send side
|
| 631 |
|
|
* to be opened.
|
| 632 |
|
|
*/
|
| 633 |
|
|
mcapi_check_resume(MCAPI_REQ_TX_OPEN,
|
| 634 |
|
|
endp_ptr->mcapi_endp_handle,
|
| 635 |
|
|
MCAPI_NULL, 0, mcapi_status);
|
| 636 |
|
|
}
|
| 637 |
|
|
}
|
| 638 |
|
|
|
| 639 |
|
|
break;
|
| 640 |
|
|
|
| 641 |
|
|
case MCAPI_CONNECT_RESPONSE:
|
| 642 |
|
|
|
| 643 |
|
|
/* Get the status. */
|
| 644 |
|
|
mcapi_status = MCAPI_GET32(buffer, MCAPI_CNCT_STATUS);
|
| 645 |
|
|
|
| 646 |
|
|
/* Get the transmit node. */
|
| 647 |
|
|
node_id = MCAPI_GET16(buffer, MCAPI_CNCT_TX_NODE);
|
| 648 |
|
|
|
| 649 |
|
|
/* Get the transmit port. */
|
| 650 |
|
|
port_id = MCAPI_GET16(buffer, MCAPI_CNCT_TX_PORT);
|
| 651 |
|
|
|
| 652 |
|
|
/* Check if any tasks are waiting for this connection
|
| 653 |
|
|
* to be created.
|
| 654 |
|
|
*/
|
| 655 |
|
|
mcapi_check_resume(MCAPI_REQ_CONNECTED,
|
| 656 |
|
|
mcapi_encode_endpoint(node_id, port_id),
|
| 657 |
|
|
MCAPI_NULL, 0, mcapi_status);
|
| 658 |
|
|
|
| 659 |
|
|
break;
|
| 660 |
|
|
|
| 661 |
|
|
case MCAPI_CONNECT_FIN:
|
| 662 |
|
|
|
| 663 |
|
|
/* Extract the port ID. */
|
| 664 |
|
|
port_id = MCAPI_GET16(buffer, MCAPI_CNCT_FIN_PORT);
|
| 665 |
|
|
|
| 666 |
|
|
/* Get a pointer to the endpoint. */
|
| 667 |
|
|
endp_ptr = mcapi_find_local_endpoint(node_data, MCAPI_Node_ID,
|
| 668 |
|
|
port_id);
|
| 669 |
|
|
|
| 670 |
|
|
/* If the endpoint was found. */
|
| 671 |
|
|
if (endp_ptr)
|
| 672 |
|
|
{
|
| 673 |
|
|
/* Clear the "connected" flag since the other side
|
| 674 |
|
|
* has shutdown the read/write side.
|
| 675 |
|
|
*/
|
| 676 |
|
|
endp_ptr->mcapi_state &= ~MCAPI_ENDP_CONNECTED;
|
| 677 |
|
|
endp_ptr->mcapi_state &= ~MCAPI_ENDP_CONNECTING;
|
| 678 |
|
|
|
| 679 |
|
|
/* Resume any threads that are suspended on this endpoint
|
| 680 |
|
|
* for any reason.
|
| 681 |
|
|
*/
|
| 682 |
|
|
mcapi_check_resume(MCAPI_REQ_CLOSED,
|
| 683 |
|
|
endp_ptr->mcapi_endp_handle, MCAPI_NULL,
|
| 684 |
|
|
0, MGC_MCAPI_ERR_NOT_CONNECTED);
|
| 685 |
|
|
|
| 686 |
|
|
}
|
| 687 |
|
|
|
| 688 |
|
|
break;
|
| 689 |
|
|
|
| 690 |
|
|
default:
|
| 691 |
|
|
|
| 692 |
|
|
break;
|
| 693 |
|
|
}
|
| 694 |
|
|
|
| 695 |
|
|
/* Release the lock. */
|
| 696 |
|
|
mcapi_unlock_node_data();
|
| 697 |
|
|
}
|
| 698 |
|
|
|
| 699 |
|
|
/* The application has called mcapi_finalize(). Exit the loop. */
|
| 700 |
|
|
else
|
| 701 |
|
|
{
|
| 702 |
|
|
break;
|
| 703 |
|
|
}
|
| 704 |
|
|
}
|
| 705 |
|
|
|
| 706 |
|
|
/* Terminate this task. */
|
| 707 |
|
|
MCAPI_Cleanup_Task();
|
| 708 |
|
|
|
| 709 |
|
|
return NULL;
|
| 710 |
|
|
}
|
| 711 |
|
|
|
| 712 |
|
|
/*************************************************************************
|
| 713 |
|
|
*
|
| 714 |
|
|
* FUNCTION
|
| 715 |
|
|
*
|
| 716 |
|
|
* mcapi_connect_endpoints
|
| 717 |
|
|
*
|
| 718 |
|
|
* DESCRIPTION
|
| 719 |
|
|
*
|
| 720 |
|
|
* Issues a request to an endpoint to connect the endpoint.
|
| 721 |
|
|
*
|
| 722 |
|
|
* INPUTS
|
| 723 |
|
|
*
|
| 724 |
|
|
* *node_data A pointer to the global node data.
|
| 725 |
|
|
* *buffer A pointer to the buffer containing
|
| 726 |
|
|
* the request. This buffer will be
|
| 727 |
|
|
* reused to send the SYN to the receive
|
| 728 |
|
|
* endpoint.
|
| 729 |
|
|
* *status A pointer that will be filled in with
|
| 730 |
|
|
* the status of the request.
|
| 731 |
|
|
*
|
| 732 |
|
|
* OUTPUTS
|
| 733 |
|
|
*
|
| 734 |
|
|
* None.
|
| 735 |
|
|
*
|
| 736 |
|
|
*************************************************************************/
|
| 737 |
|
|
static void mcapi_connect_endpoints(MCAPI_GLOBAL_DATA *node_data,
|
| 738 |
|
|
unsigned char *buffer,
|
| 739 |
|
|
mcapi_status_t *mcapi_status)
|
| 740 |
|
|
{
|
| 741 |
|
|
MCAPI_ENDPOINT *endp_ptr;
|
| 742 |
|
|
mcapi_node_t local_node_id, foreign_node_id;
|
| 743 |
|
|
mcapi_port_t local_port_id;
|
| 744 |
|
|
mcapi_request_t request;
|
| 745 |
|
|
|
| 746 |
|
|
/* Get the local node. */
|
| 747 |
|
|
local_node_id = MCAPI_GET16(buffer, MCAPI_CNCT_TX_NODE);
|
| 748 |
|
|
|
| 749 |
|
|
/* Get the local port. */
|
| 750 |
|
|
local_port_id = MCAPI_GET16(buffer, MCAPI_CNCT_TX_PORT);
|
| 751 |
|
|
|
| 752 |
|
|
/* Get the foreign node. */
|
| 753 |
|
|
foreign_node_id = MCAPI_GET16(buffer, MCAPI_CNCT_RX_NODE);
|
| 754 |
|
|
|
| 755 |
|
|
/* Get a pointer to the endpoint. */
|
| 756 |
|
|
endp_ptr = mcapi_find_local_endpoint(node_data, local_node_id,
|
| 757 |
|
|
local_port_id);
|
| 758 |
|
|
|
| 759 |
|
|
/* If the endpoint was found. */
|
| 760 |
|
|
if (endp_ptr)
|
| 761 |
|
|
{
|
| 762 |
|
|
/* If the endpoint is not already connected. */
|
| 763 |
|
|
if (!(endp_ptr->mcapi_state & MCAPI_ENDP_CONNECTING))
|
| 764 |
|
|
{
|
| 765 |
|
|
/* Set the type to connected so another node doesn't
|
| 766 |
|
|
* try to issue a connection while this connection
|
| 767 |
|
|
* is in progress.
|
| 768 |
|
|
*/
|
| 769 |
|
|
endp_ptr->mcapi_state |= MCAPI_ENDP_CONNECTING;
|
| 770 |
|
|
|
| 771 |
|
|
/* Clear the disconnected status in case it is set. */
|
| 772 |
|
|
endp_ptr->mcapi_state &= ~MCAPI_ENDP_DISCONNECTED;
|
| 773 |
|
|
|
| 774 |
|
|
/* Set the packet type. */
|
| 775 |
|
|
MCAPI_PUT16(buffer, MCAPI_PROT_TYPE, MCAPI_CONNECT_SYN);
|
| 776 |
|
|
|
| 777 |
|
|
/* Send a message to the foreign node to see if
|
| 778 |
|
|
* the connection can be made.
|
| 779 |
|
|
*/
|
| 780 |
|
|
msg_send(MCAPI_CTRL_TX_Endp,
|
| 781 |
|
|
mcapi_encode_endpoint(foreign_node_id,
|
| 782 |
|
|
MCAPI_RX_CONTROL_PORT), buffer,
|
| 783 |
|
|
MCAPI_CONNECT_MSG_LEN, MCAPI_DEFAULT_PRIO,
|
| 784 |
|
|
&request, mcapi_status, 0xffffffff);
|
| 785 |
|
|
}
|
| 786 |
|
|
|
| 787 |
|
|
/* This endpoint is already connected. */
|
| 788 |
|
|
else
|
| 789 |
|
|
{
|
| 790 |
|
|
*mcapi_status = MCAPI_ERR_CHAN_CONNECTED;
|
| 791 |
|
|
}
|
| 792 |
|
|
}
|
| 793 |
|
|
|
| 794 |
|
|
/* This endpoint is not a valid endpoint. */
|
| 795 |
|
|
else
|
| 796 |
|
|
{
|
| 797 |
|
|
*mcapi_status = MCAPI_ERR_ENDP_INVALID;
|
| 798 |
|
|
}
|
| 799 |
|
|
|
| 800 |
|
|
}
|
| 801 |
|
|
|
| 802 |
|
|
/*************************************************************************
|
| 803 |
|
|
*
|
| 804 |
|
|
* FUNCTION
|
| 805 |
|
|
*
|
| 806 |
|
|
* mcapi_setup_connection
|
| 807 |
|
|
*
|
| 808 |
|
|
* DESCRIPTION
|
| 809 |
|
|
*
|
| 810 |
|
|
* Sets up a connection over an endpoint.
|
| 811 |
|
|
*
|
| 812 |
|
|
* INPUTS
|
| 813 |
|
|
*
|
| 814 |
|
|
* *node_data A pointer to the global node data.
|
| 815 |
|
|
* *buffer A pointer to the buffer containing the
|
| 816 |
|
|
* connection SYN.
|
| 817 |
|
|
* *mcapi_status A pointer that will be filled in with
|
| 818 |
|
|
* the status of the operation.
|
| 819 |
|
|
* connect_side The local node's side of the connection:
|
| 820 |
|
|
* MCAPI_TX_SIDE or MCAPI_RX_SIDE.
|
| 821 |
|
|
*
|
| 822 |
|
|
* OUTPUTS
|
| 823 |
|
|
*
|
| 824 |
|
|
* None.
|
| 825 |
|
|
*
|
| 826 |
|
|
*************************************************************************/
|
| 827 |
|
|
static void mcapi_setup_connection(MCAPI_GLOBAL_DATA *node_data,
|
| 828 |
|
|
MCAPI_ENDPOINT *endp_ptr, unsigned char *buffer,
|
| 829 |
|
|
mcapi_status_t *mcapi_status,
|
| 830 |
|
|
mcapi_uint16_t connect_side)
|
| 831 |
|
|
{
|
| 832 |
|
|
int node_idx;
|
| 833 |
|
|
MCAPI_NODE *node_ptr;
|
| 834 |
|
|
|
| 835 |
|
|
/* If the endpoint is not already connected. Note that the
|
| 836 |
|
|
* transmit side is set to connected when the initial connect
|
| 837 |
|
|
* request is made.
|
| 838 |
|
|
*/
|
| 839 |
|
|
if ( (connect_side == MCAPI_TX_SIDE) ||
|
| 840 |
|
|
(!(endp_ptr->mcapi_state & MCAPI_ENDP_CONNECTING)) )
|
| 841 |
|
|
{
|
| 842 |
|
|
/* Get the index of the local node. */
|
| 843 |
|
|
node_idx = mcapi_find_node(endp_ptr->mcapi_node_id, node_data);
|
| 844 |
|
|
|
| 845 |
|
|
if (node_idx != -1)
|
| 846 |
|
|
{
|
| 847 |
|
|
/* Get a pointer to the node structure. */
|
| 848 |
|
|
node_ptr = &node_data->mcapi_node_list[node_idx];
|
| 849 |
|
|
|
| 850 |
|
|
/* Set up routes between the two endpoints. */
|
| 851 |
|
|
endp_ptr->mcapi_route =
|
| 852 |
|
|
mcapi_find_route(endp_ptr->mcapi_node_id, node_ptr);
|
| 853 |
|
|
|
| 854 |
|
|
/* Ensure the receive side is reachable from this node. */
|
| 855 |
|
|
if (endp_ptr->mcapi_route)
|
| 856 |
|
|
{
|
| 857 |
|
|
/* Ensure the attributes of both endpoints match. */
|
| 858 |
|
|
|
| 859 |
|
|
/* Set the state of the send endpoint. */
|
| 860 |
|
|
endp_ptr->mcapi_state |= MCAPI_ENDP_CONNECTING;
|
| 861 |
|
|
|
| 862 |
|
|
/* Clear the disconnected status in case it is set. */
|
| 863 |
|
|
endp_ptr->mcapi_state &= ~MCAPI_ENDP_DISCONNECTED;
|
| 864 |
|
|
|
| 865 |
|
|
/* Get the index of the local node. */
|
| 866 |
|
|
if (connect_side == MCAPI_TX_SIDE)
|
| 867 |
|
|
{
|
| 868 |
|
|
/* Get the receive node. */
|
| 869 |
|
|
endp_ptr->mcapi_foreign_node_id =
|
| 870 |
|
|
MCAPI_GET16(buffer, MCAPI_CNCT_RX_NODE);
|
| 871 |
|
|
|
| 872 |
|
|
/* Get the receive port. */
|
| 873 |
|
|
endp_ptr->mcapi_foreign_port_id =
|
| 874 |
|
|
MCAPI_GET16(buffer, MCAPI_CNCT_RX_PORT);
|
| 875 |
|
|
|
| 876 |
|
|
/* Set the state indicating that this side is connecting
|
| 877 |
|
|
* as a sender.
|
| 878 |
|
|
*/
|
| 879 |
|
|
endp_ptr->mcapi_state |= MCAPI_ENDP_CONNECTING_TX;
|
| 880 |
|
|
}
|
| 881 |
|
|
|
| 882 |
|
|
else
|
| 883 |
|
|
{
|
| 884 |
|
|
/* Get the receive node. */
|
| 885 |
|
|
endp_ptr->mcapi_foreign_node_id =
|
| 886 |
|
|
MCAPI_GET16(buffer, MCAPI_CNCT_TX_NODE);
|
| 887 |
|
|
|
| 888 |
|
|
/* Get the receive port. */
|
| 889 |
|
|
endp_ptr->mcapi_foreign_port_id =
|
| 890 |
|
|
MCAPI_GET16(buffer, MCAPI_CNCT_TX_PORT);
|
| 891 |
|
|
|
| 892 |
|
|
/* Set the state indicating that this side is connecting
|
| 893 |
|
|
* as a receiver.
|
| 894 |
|
|
*/
|
| 895 |
|
|
endp_ptr->mcapi_state |= MCAPI_ENDP_CONNECTING_RX;
|
| 896 |
|
|
}
|
| 897 |
|
|
|
| 898 |
|
|
/* Set the channel type. */
|
| 899 |
|
|
endp_ptr->mcapi_chan_type =
|
| 900 |
|
|
MCAPI_GET16(buffer, MCAPI_CNCT_CHAN_TYPE);
|
| 901 |
|
|
|
| 902 |
|
|
/* Extract the requestor's node ID and port ID. */
|
| 903 |
|
|
endp_ptr->mcapi_req_node_id =
|
| 904 |
|
|
MCAPI_GET16(buffer, MCAPI_CNCT_REQ_NODE);
|
| 905 |
|
|
|
| 906 |
|
|
endp_ptr->mcapi_req_port_id =
|
| 907 |
|
|
MCAPI_GET16(buffer, MCAPI_CNCT_REQ_PORT);
|
| 908 |
|
|
}
|
| 909 |
|
|
|
| 910 |
|
|
/* The node is not reachable from this node. */
|
| 911 |
|
|
else
|
| 912 |
|
|
{
|
| 913 |
|
|
*mcapi_status = MCAPI_ERR_ENDP_INVALID;
|
| 914 |
|
|
}
|
| 915 |
|
|
}
|
| 916 |
|
|
|
| 917 |
|
|
/* The node is not reachable from this node. */
|
| 918 |
|
|
else
|
| 919 |
|
|
{
|
| 920 |
|
|
*mcapi_status = MCAPI_ERR_ENDP_INVALID;
|
| 921 |
|
|
}
|
| 922 |
|
|
}
|
| 923 |
|
|
|
| 924 |
|
|
else
|
| 925 |
|
|
{
|
| 926 |
|
|
*mcapi_status = MCAPI_ERR_CHAN_CONNECTED;
|
| 927 |
|
|
}
|
| 928 |
|
|
|
| 929 |
|
|
}
|
| 930 |
|
|
|
| 931 |
|
|
/*************************************************************************
|
| 932 |
|
|
*
|
| 933 |
|
|
* FUNCTION
|
| 934 |
|
|
*
|
| 935 |
|
|
* send_connect_response
|
| 936 |
|
|
*
|
| 937 |
|
|
* DESCRIPTION
|
| 938 |
|
|
*
|
| 939 |
|
|
* Sends a response to a connection request.
|
| 940 |
|
|
*
|
| 941 |
|
|
* INPUTS
|
| 942 |
|
|
*
|
| 943 |
|
|
* *buffer A pointer to the buffer containing the
|
| 944 |
|
|
* outgoing response.
|
| 945 |
|
|
* status The status to insert in the response.
|
| 946 |
|
|
*
|
| 947 |
|
|
* OUTPUTS
|
| 948 |
|
|
*
|
| 949 |
|
|
* None.
|
| 950 |
|
|
*
|
| 951 |
|
|
*************************************************************************/
|
| 952 |
|
|
static void send_connect_response(unsigned char *buffer, mcapi_status_t status)
|
| 953 |
|
|
{
|
| 954 |
|
|
mcapi_node_t node_id;
|
| 955 |
|
|
mcapi_port_t port_id;
|
| 956 |
|
|
mcapi_status_t mcapi_status;
|
| 957 |
|
|
mcapi_request_t request;
|
| 958 |
|
|
|
| 959 |
|
|
/* Get the requestor node. */
|
| 960 |
|
|
node_id = MCAPI_GET16(buffer, MCAPI_CNCT_REQ_NODE);
|
| 961 |
|
|
|
| 962 |
|
|
/* Get the requestor port. */
|
| 963 |
|
|
port_id = MCAPI_GET16(buffer, MCAPI_CNCT_REQ_PORT);
|
| 964 |
|
|
|
| 965 |
|
|
/* Set the error message in the packet. */
|
| 966 |
|
|
MCAPI_PUT32(buffer, MCAPI_CNCT_STATUS, status);
|
| 967 |
|
|
|
| 968 |
|
|
/* Set the type to response. */
|
| 969 |
|
|
MCAPI_PUT16(buffer, MCAPI_PROT_TYPE, MCAPI_CONNECT_RESPONSE);
|
| 970 |
|
|
|
| 971 |
|
|
/* Send the error response to the requestor. */
|
| 972 |
|
|
msg_send(MCAPI_CTRL_TX_Endp,
|
| 973 |
|
|
mcapi_encode_endpoint(node_id, port_id),
|
| 974 |
|
|
buffer, MCAPI_CONNECT_MSG_LEN,
|
| 975 |
|
|
MCAPI_DEFAULT_PRIO,
|
| 976 |
|
|
&request, &mcapi_status, 0xffffffff);
|
| 977 |
|
|
|
| 978 |
|
|
}
|
| 979 |
|
|
|
| 980 |
|
|
/*************************************************************************
|
| 981 |
|
|
*
|
| 982 |
|
|
* FUNCTION
|
| 983 |
|
|
*
|
| 984 |
|
|
* mcapi_tx_response
|
| 985 |
|
|
*
|
| 986 |
|
|
* DESCRIPTION
|
| 987 |
|
|
*
|
| 988 |
|
|
* Transmits a response to a foreign node for a pending request.
|
| 989 |
|
|
*
|
| 990 |
|
|
* INPUTS
|
| 991 |
|
|
*
|
| 992 |
|
|
* *node_data A pointer to the global MCAPI node data
|
| 993 |
|
|
* structure.
|
| 994 |
|
|
* *request The request structure associated with the
|
| 995 |
|
|
* foreign node to resume.
|
| 996 |
|
|
*
|
| 997 |
|
|
* OUTPUTS
|
| 998 |
|
|
*
|
| 999 |
|
|
* None.
|
| 1000 |
|
|
*
|
| 1001 |
|
|
*************************************************************************/
|
| 1002 |
|
|
void mcapi_tx_response(MCAPI_GLOBAL_DATA *node_data, mcapi_request_t *request)
|
| 1003 |
|
|
{
|
| 1004 |
|
|
mcapi_status_t tx_status;
|
| 1005 |
|
|
mcapi_endpoint_t remote_endp;
|
| 1006 |
|
|
mcapi_request_t tx_request;
|
| 1007 |
|
|
unsigned char buffer[MCAPI_GET_ENDP_LEN];
|
| 1008 |
|
|
|
| 1009 |
|
|
/* If the get request was successful, send the response. */
|
| 1010 |
|
|
if (request->mcapi_status != MCAPI_ERR_REQUEST_CANCELLED)
|
| 1011 |
|
|
{
|
| 1012 |
|
|
MCAPI_PUT16(buffer, MCAPI_PROT_TYPE, MCAPI_GETENDP_RESPONSE);
|
| 1013 |
|
|
|
| 1014 |
|
|
/* Set the status. */
|
| 1015 |
|
|
MCAPI_PUT32(buffer, MCAPI_GETENDP_STATUS, request->mcapi_status);
|
| 1016 |
|
|
}
|
| 1017 |
|
|
|
| 1018 |
|
|
/* If the get request is being canceled, send a cancel message. */
|
| 1019 |
|
|
else
|
| 1020 |
|
|
{
|
| 1021 |
|
|
MCAPI_PUT16(buffer, MCAPI_PROT_TYPE, MCAPI_CANCEL_MSG);
|
| 1022 |
|
|
}
|
| 1023 |
|
|
|
| 1024 |
|
|
/* Put the target port in the buffer. */
|
| 1025 |
|
|
MCAPI_PUT16(buffer, MCAPI_GETENDP_PORT, request->mcapi_target_port_id);
|
| 1026 |
|
|
|
| 1027 |
|
|
remote_endp = mcapi_encode_endpoint(request->mcapi_requesting_node_id,
|
| 1028 |
|
|
request->mcapi_requesting_port_id);
|
| 1029 |
|
|
|
| 1030 |
|
|
/* Put the target endpoint in the packet. */
|
| 1031 |
|
|
MCAPI_PUT32(buffer, MCAPI_GETENDP_ENDP,
|
| 1032 |
|
|
mcapi_encode_endpoint(MCAPI_Node_ID,
|
| 1033 |
|
|
request->mcapi_target_port_id));
|
| 1034 |
|
|
|
| 1035 |
|
|
/* Send the packet back to the caller. */
|
| 1036 |
|
|
msg_send(MCAPI_CTRL_TX_Endp, remote_endp, buffer, MCAPI_GET_ENDP_LEN,
|
| 1037 |
|
|
MCAPI_DEFAULT_PRIO, &tx_request, &tx_status,
|
| 1038 |
|
|
0xffffffff);
|
| 1039 |
|
|
|
| 1040 |
|
|
}
|
| 1041 |
|
|
|
| 1042 |
|
|
/*************************************************************************
|
| 1043 |
|
|
*
|
| 1044 |
|
|
* FUNCTION
|
| 1045 |
|
|
*
|
| 1046 |
|
|
* mcapi_rx_data
|
| 1047 |
|
|
*
|
| 1048 |
|
|
* DESCRIPTION
|
| 1049 |
|
|
*
|
| 1050 |
|
|
* Process incoming data from driver level interfaces.
|
| 1051 |
|
|
*
|
| 1052 |
|
|
* INPUTS
|
| 1053 |
|
|
*
|
| 1054 |
|
|
* None.
|
| 1055 |
|
|
*
|
| 1056 |
|
|
* OUTPUTS
|
| 1057 |
|
|
*
|
| 1058 |
|
|
* None.
|
| 1059 |
|
|
*
|
| 1060 |
|
|
*************************************************************************/
|
| 1061 |
|
|
void mcapi_rx_data(void)
|
| 1062 |
|
|
{
|
| 1063 |
|
|
MCAPI_ENDPOINT *endp_ptr;
|
| 1064 |
|
|
MCAPI_BUFFER *mcapi_buf_ptr;
|
| 1065 |
|
|
MCAPI_GLOBAL_DATA *node_data;
|
| 1066 |
|
|
mcapi_int_t cookie;
|
| 1067 |
|
|
mcapi_node_t dest_node;
|
| 1068 |
|
|
mcapi_port_t dest_port;
|
| 1069 |
|
|
int i;
|
| 1070 |
|
|
|
| 1071 |
|
|
mcapi_lock_node_data();
|
| 1072 |
|
|
|
| 1073 |
|
|
/* Get a pointer to the global node list. */
|
| 1074 |
|
|
node_data = mcapi_get_node_data();
|
| 1075 |
|
|
|
| 1076 |
|
|
for (i = 0; i < MCAPI_PRIO_COUNT; i++)
|
| 1077 |
|
|
{
|
| 1078 |
|
|
/* Process all data on the incoming receive queue. */
|
| 1079 |
|
|
while (MCAPI_RX_Queue[i].head)
|
| 1080 |
|
|
{
|
| 1081 |
|
|
/* Disable interrupts - the HISR could add to this queue
|
| 1082 |
|
|
* while we remove from it.
|
| 1083 |
|
|
*/
|
| 1084 |
|
|
cookie = MCAPI_Lock_RX_Queue();
|
| 1085 |
|
|
|
| 1086 |
|
|
/* Pull the buffer off the queue. */
|
| 1087 |
|
|
mcapi_buf_ptr = mcapi_dequeue(&MCAPI_RX_Queue[i]);
|
| 1088 |
|
|
|
| 1089 |
|
|
/* Restore interrupts to the previous level. */
|
| 1090 |
|
|
MCAPI_Unlock_RX_Queue(cookie);
|
| 1091 |
|
|
|
| 1092 |
|
|
/* Extract the destination node. */
|
| 1093 |
|
|
dest_node =
|
| 1094 |
|
|
MCAPI_GET16(mcapi_buf_ptr->buf_ptr, MCAPI_DEST_NODE_OFFSET);
|
| 1095 |
|
|
|
| 1096 |
|
|
/* Extract the destination port. */
|
| 1097 |
|
|
dest_port =
|
| 1098 |
|
|
MCAPI_GET16(mcapi_buf_ptr->buf_ptr, MCAPI_DEST_PORT_OFFSET);
|
| 1099 |
|
|
|
| 1100 |
|
|
/* Decode message header and obtain RX endpoint */
|
| 1101 |
|
|
endp_ptr =
|
| 1102 |
|
|
mcapi_find_local_endpoint(node_data, dest_node, dest_port);
|
| 1103 |
|
|
|
| 1104 |
|
|
/* If the packet is for this node. */
|
| 1105 |
|
|
if (endp_ptr)
|
| 1106 |
|
|
{
|
| 1107 |
|
|
/* Enqueue the new buffer onto the receive queue for
|
| 1108 |
|
|
* the endpoint.
|
| 1109 |
|
|
*/
|
| 1110 |
|
|
mcapi_enqueue(&endp_ptr->mcapi_rx_queue, mcapi_buf_ptr);
|
| 1111 |
|
|
|
| 1112 |
|
|
/* Check if any tasks are waiting to receive data on this
|
| 1113 |
|
|
* endpoint.
|
| 1114 |
|
|
*/
|
| 1115 |
|
|
mcapi_check_resume(MCAPI_REQ_RX_FIN,
|
| 1116 |
|
|
endp_ptr->mcapi_endp_handle, endp_ptr,
|
| 1117 |
|
|
mcapi_buf_ptr->buf_size - MCAPI_HEADER_LEN,
|
| 1118 |
|
|
MCAPI_SUCCESS);
|
| 1119 |
|
|
}
|
| 1120 |
|
|
|
| 1121 |
|
|
else
|
| 1122 |
|
|
#if (MCAPI_ENABLE_FORWARDING == 1)
|
| 1123 |
|
|
{
|
| 1124 |
|
|
/* Attempt to forward the packet. */
|
| 1125 |
|
|
mcapi_forward(node_data, mcapi_buf_ptr, dest_node);
|
| 1126 |
|
|
}
|
| 1127 |
|
|
#else
|
| 1128 |
|
|
{
|
| 1129 |
|
|
/* The packet is not destined for this node, and forwarding
|
| 1130 |
|
|
* capabilities are disabled.
|
| 1131 |
|
|
*/
|
| 1132 |
|
|
((MCAPI_INTERFACE*)(mcapi_buf_ptr->mcapi_dev_ptr))->
|
| 1133 |
|
|
mcapi_recover_buffer(mcapi_buf_ptr);
|
| 1134 |
|
|
}
|
| 1135 |
|
|
#endif
|
| 1136 |
|
|
}
|
| 1137 |
|
|
}
|
| 1138 |
|
|
|
| 1139 |
|
|
/* Release the lock. */
|
| 1140 |
|
|
mcapi_unlock_node_data();
|
| 1141 |
|
|
|
| 1142 |
|
|
}
|
