text: /*
   * addr_hash.h:
   *
   */
  
  #ifndef __ADDR_HASH_H_ /* include guard */
  #define __ADDR_HASH_H_
  
  #include <sys/types.h>
  #include <sys/socket.h>
  #include <netinet/in.h>
  #include "hash.h"
  
  typedef struct {
      unsigned short int protocol;
      unsigned short int src_port;
      struct in_addr src;
      unsigned short int dst_port;
      struct in_addr dst;
  } addr_pair;
  
  typedef addr_pair key_type;      /* index into hash table */
  
  hash_type* addr_hash_create(void);
  
  #endif /* __ADDR_HASH_H_ */
  