#ifndef MPOA_CACHES_H
  #define MPOA_CACHES_H
  
  #include <linux/netdevice.h>
  #include <linux/types.h>
  #include <linux/atm.h>
  #include <linux/atmdev.h>
  #include <linux/atmmpc.h>
  
  struct mpoa_client;
  
  void atm_mpoa_init_cache(struct mpoa_client *mpc);
  
  typedef struct in_cache_entry {

  	struct in_cache_entry *next;
  	struct in_cache_entry *prev;
  	struct timeval  tv;
  	struct timeval  reply_wait;
  	struct timeval  hold_down;
  	uint32_t  packets_fwded;
  	uint16_t  entry_state;
  	uint32_t retry_time;
  	uint32_t refresh_time;
  	uint32_t count;
  	struct   atm_vcc *shortcut;
  	uint8_t  MPS_ctrl_ATM_addr[ATM_ESA_LEN];
  	struct   in_ctrl_info ctrl_info;
  	atomic_t use;

  } in_cache_entry;
  
  struct in_cache_ops{

  	in_cache_entry *(*add_entry)(__be32 dst_ip,
  				      struct mpoa_client *client);
  	in_cache_entry *(*get)(__be32 dst_ip, struct mpoa_client *client);
  	in_cache_entry *(*get_with_mask)(__be32 dst_ip,

  					 struct mpoa_client *client,

  					 __be32 mask);

  	in_cache_entry *(*get_by_vcc)(struct atm_vcc *vcc,
  				      struct mpoa_client *client);
  	void            (*put)(in_cache_entry *entry);
  	void            (*remove_entry)(in_cache_entry *delEntry,

  					struct mpoa_client *client );

  	int             (*cache_hit)(in_cache_entry *entry,
  				     struct mpoa_client *client);
  	void            (*clear_count)(struct mpoa_client *client);
  	void            (*check_resolving)(struct mpoa_client *client);
  	void            (*refresh)(struct mpoa_client *client);
  	void            (*destroy_cache)(struct mpoa_client *mpc);

  };
  
  typedef struct eg_cache_entry{

  	struct               eg_cache_entry *next;
  	struct               eg_cache_entry *prev;
  	struct               timeval  tv;
  	uint8_t              MPS_ctrl_ATM_addr[ATM_ESA_LEN];
  	struct atm_vcc       *shortcut;
  	uint32_t             packets_rcvd;
  	uint16_t             entry_state;
  	__be32             latest_ip_addr;    /* The src IP address of the last packet */
  	struct eg_ctrl_info  ctrl_info;
  	atomic_t             use;

  } eg_cache_entry;
  
  struct eg_cache_ops{

  	eg_cache_entry *(*add_entry)(struct k_message *msg, struct mpoa_client *client);
  	eg_cache_entry *(*get_by_cache_id)(__be32 cache_id, struct mpoa_client *client);
  	eg_cache_entry *(*get_by_tag)(__be32 cache_id, struct mpoa_client *client);
  	eg_cache_entry *(*get_by_vcc)(struct atm_vcc *vcc, struct mpoa_client *client);
  	eg_cache_entry *(*get_by_src_ip)(__be32 ipaddr, struct mpoa_client *client);
  	void            (*put)(eg_cache_entry *entry);
  	void            (*remove_entry)(eg_cache_entry *entry, struct mpoa_client *client);
  	void            (*update)(eg_cache_entry *entry, uint16_t holding_time);
  	void            (*clear_expired)(struct mpoa_client *client);
  	void            (*destroy_cache)(struct mpoa_client *mpc);

  };
  
  
  /* Ingress cache entry states */
  
  #define INGRESS_REFRESHING 3
  #define INGRESS_RESOLVED   2
  #define INGRESS_RESOLVING  1
  #define INGRESS_INVALID    0
  
  /* VCC states */
  
  #define OPEN   1

  #define CLOSED 0

  
  /* Egress cache entry states */
  
  #define EGRESS_RESOLVED 2
  #define EGRESS_PURGE    1
  #define EGRESS_INVALID  0
  
  #endif