text: /*
   * FreeRTOS V202112.00
   * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy of
   * this software and associated documentation files (the "Software"), to deal in
   * the Software without restriction, including without limitation the rights to
   * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
   * the Software, and to permit persons to whom the Software is furnished to do so,
   * subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in all
   * copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
   * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
   * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
   * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
   * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   *
   * https://www.FreeRTOS.org
   * https://aws.amazon.com/freertos
   *
   */
  
  #ifndef NET_IF_H
  #define NET_IF_H
  
  /*
   * Send uip_len bytes from uip_buf to the network interface selected by the 
   * configNETWORK_INTERFACE_TO_USE constant (defined in FreeRTOSConfig.h). 
   */
  void vNetifTx( void );
  
  /*
   * Receive bytes from the network interface selected by the 
   * configNETWORK_INTERFACE_TO_USE constant (defined in FreeRTOSConfig.h).  The
   * bytes are placed in uip_buf.  The number of bytes copied into uip_buf is
   * returned.
   */
  UBaseType_t uxNetifRx( void );
  
  /*
   * Prepare a packet capture session.  This will print out all the network 
   * interfaces available, and the one actually used is set by the 
   * configNETWORK_INTERFACE_TO_USE constant that is defined in 
   * FreeRTOSConfig.h. */
  BaseType_t xNetifInit( void );
  
  #endif /* NET_IF_H */
  