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[/] [funbase_ip_library/] [trunk/] [TUT/] [ip.swp.api/] [openmcapi/] [1.0/] [libmcapi/] [mcapi/] [forward.c] - Blame information for rev 145

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1 145 lanttu
/*
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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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/*************************************************************************
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*
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*   FUNCTION
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*
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*       mcapi_forward
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*
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*   DESCRIPTION
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*
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*       Forwards an MCAPI packet to another node.
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*
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*   INPUTS
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*
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*       *node_data              A pointer to the global structure holding
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*                               data about the local node.
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*       *mcapi_buf_ptr          A pointer to the buffer to be forwarded.
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*       dest_node               The final destination node.
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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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void mcapi_forward(MCAPI_GLOBAL_DATA *node_data, MCAPI_BUFFER *mcapi_buf_ptr,
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                   mcapi_node_t dest_node)
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{
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    MCAPI_ROUTE     *route_ptr;
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    mcapi_status_t  status = -1;
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    MCAPI_NODE      *node_ptr;
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    int             node_idx;
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    /* Get the index of the local node. */
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    node_idx = mcapi_find_node(MCAPI_Node_ID, node_data);
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    if (node_idx != -1)
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    {
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        /* Get a pointer to the local node. */
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        node_ptr = &node_data->mcapi_node_list[node_idx];
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        /* Find a route to the destination. */
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        route_ptr = mcapi_find_route(dest_node, node_ptr);
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        /* If a route was found. */
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        if (route_ptr)
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        {
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            /* Pass the data to the transport layer driver. */
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            status =
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                route_ptr->mcapi_rt_int->mcapi_tx_output(mcapi_buf_ptr,
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                                                         mcapi_buf_ptr->buf_size,
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                                                         MCAPI_GET16(mcapi_buf_ptr->buf_ptr,
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                                                         MCAPI_PRIO_OFFSET), MCAPI_NULL);
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        }
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    }
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    /* If the packet could not be forwarded. */
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    if (status != MCAPI_SUCCESS)
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    {
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        ((MCAPI_INTERFACE*)(mcapi_buf_ptr->mcapi_dev_ptr))->
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            mcapi_recover_buffer(mcapi_buf_ptr);
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    }
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}

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