Release 4.14 net/atm/mpoa_caches.h

/* SPDX-License-Identifier: GPL-2.0 */
#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>
#include <linux/refcount.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;
	
refcount_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;
	
refcount_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
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