SendPacket.cpp

int send_packet_to_device (void* packet) {
  int ret;
  
  ret = open_device();
  if (ret != OK) {
    printf("Device could not be opened!\n");
    goto ERROR;
  }
  
  ret = send_packet(packet);
  if (ret != OK) {
    printf("Failed to send the packet!\n");
    goto ERROR;
  }

  ret = close_device();
  if (ret != OK) {
    printf("Failed to close the device!\n");
    goto ERROR;
  }

  return RET_OK;

ERROR:
  printf("Some error happened!\n");
  return RET_NG;
}