/**************************************************************************/
/*                                                                        */
/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
/*                                                                        */
/*       This software is licensed under the Microsoft Software License   */
/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
/*       and in the root directory of this software.                      */
/*                                                                        */
/**************************************************************************/


/**************************************************************************/
/**************************************************************************/
/**                                                                       */
/** NetX Component                                                        */
/**                                                                       */
/**   Internet Protocol (IP)                                              */
/**                                                                       */
/**************************************************************************/
/**************************************************************************/

#define NX_SOURCE_CODE


/* Include necessary system files.  */

#include "nx_api.h"
#include "nx_ip.h"


/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _nx_ip_driver_interface_direct_command              PORTABLE C      */
/*                                                           6.1          */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Yuxin Zhou, Microsoft Corporation                                   */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This function provides the application with direct access to        */
/*    the specific IP's link-level driver.                                */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    ip_ptr                                Pointer to IP instance        */
/*    command                               Driver command (NX_LINK_*)    */
/*    interface_index                       Index to the interface        */
/*    return_value_ptr                      Pointer to place return values*/
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    status                                Completion status             */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    tx_mutex_get                          Get protection mutex          */
/*    tx_mutex_put                          Put protection mutex          */
/*    (ip_link_driver)                      User supplied link driver     */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    Application                                                         */
/*                                                                        */
/*  RELEASE HISTORY                                                       */
/*                                                                        */
/*    DATE              NAME                      DESCRIPTION             */
/*                                                                        */
/*  05-19-2020     Yuxin Zhou               Initial Version 6.0           */
/*  09-30-2020     Yuxin Zhou               Modified comment(s),          */
/*                                            resulting in version 6.1    */
/*                                                                        */
/**************************************************************************/
UINT  _nx_ip_driver_interface_direct_command(NX_IP *ip_ptr, UINT command, UINT interface_index, ULONG *return_value_ptr)
{

NX_IP_DRIVER           driver_request;

#ifdef TX_ENABLE_EVENT_TRACE
TX_TRACE_BUFFER_ENTRY *trace_event;
ULONG                  trace_timestamp;
#endif


    /* If trace is enabled, insert this event into the trace buffer.  */
    NX_TRACE_IN_LINE_INSERT(NX_TRACE_IP_DRIVER_DIRECT_COMMAND, ip_ptr, command, 0, 0, NX_TRACE_IP_EVENTS, &trace_event, &trace_timestamp);

    /* Get mutex protection.  */
    tx_mutex_get(&(ip_ptr -> nx_ip_protection), TX_WAIT_FOREVER);

    /* Build the driver request structure.  */
    driver_request.nx_ip_driver_ptr =         ip_ptr;
    driver_request.nx_ip_driver_command =     command;
    driver_request.nx_ip_driver_return_ptr =  return_value_ptr;
    driver_request.nx_ip_driver_interface  =  &(ip_ptr -> nx_ip_interface[interface_index]);
    (ip_ptr -> nx_ip_interface[interface_index].nx_interface_link_driver_entry)(&driver_request);

    /* Release mutex protection.  */
    tx_mutex_put(&(ip_ptr -> nx_ip_protection));

    /* Update the trace event with the status.  */
    NX_TRACE_EVENT_UPDATE(trace_event, trace_timestamp, NX_TRACE_IP_DRIVER_DIRECT_COMMAND, 0, 0, driver_request.nx_ip_driver_status, 0);

    /* Return status to the caller.  */
    /*lint -e{644} suppress variable might not be initialized, since "nx_ip_driver_status" was initialized in nx_interface_link_driver_entry. */
    return(driver_request.nx_ip_driver_status);
}