text: #pragma once
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  #include <stdint.h>
  
  const char * strstat(int statno);
  char * get_ethernet_header(const uint8_t src[6], const uint8_t dst[6], uint16_t type, 
          char * header);
  uint8_t * get_EAP(uint8_t code, uint8_t id, uint8_t type, const uint8_t *data, uint16_t datalen,
          uint8_t * eap);
  uint8_t * get_EAPOL(uint8_t type, const uint8_t * payload, uint16_t len, uint8_t * eapol);
  
  #ifdef __cplusplus
  }
  #endif
  