1#ifndef MPOA_CACHES_H
2#define MPOA_CACHES_H
3
4#include <linux/netdevice.h>
5#include <linux/types.h>
6#include <linux/atm.h>
7#include <linux/atmdev.h>
8#include <linux/atmmpc.h>
9
10struct mpoa_client;
11
12void atm_mpoa_init_cache(struct mpoa_client *mpc);
13
14typedef struct in_cache_entry {
15	struct in_cache_entry *next;
16	struct in_cache_entry *prev;
17	struct timeval  tv;
18	struct timeval  reply_wait;
19	struct timeval  hold_down;
20	uint32_t  packets_fwded;
21	uint16_t  entry_state;
22	uint32_t retry_time;
23	uint32_t refresh_time;
24	uint32_t count;
25	struct   atm_vcc *shortcut;
26	uint8_t  MPS_ctrl_ATM_addr[ATM_ESA_LEN];
27	struct   in_ctrl_info ctrl_info;
28	atomic_t use;
29} in_cache_entry;
30
31struct in_cache_ops{
32	in_cache_entry *(*add_entry)(__be32 dst_ip,
33				      struct mpoa_client *client);
34	in_cache_entry *(*get)(__be32 dst_ip, struct mpoa_client *client);
35	in_cache_entry *(*get_with_mask)(__be32 dst_ip,
36					 struct mpoa_client *client,
37					 __be32 mask);
38	in_cache_entry *(*get_by_vcc)(struct atm_vcc *vcc,
39				      struct mpoa_client *client);
40	void            (*put)(in_cache_entry *entry);
41	void            (*remove_entry)(in_cache_entry *delEntry,
42					struct mpoa_client *client );
43	int             (*cache_hit)(in_cache_entry *entry,
44				     struct mpoa_client *client);
45	void            (*clear_count)(struct mpoa_client *client);
46	void            (*check_resolving)(struct mpoa_client *client);
47	void            (*refresh)(struct mpoa_client *client);
48	void            (*destroy_cache)(struct mpoa_client *mpc);
49};
50
51typedef struct eg_cache_entry{
52	struct               eg_cache_entry *next;
53	struct               eg_cache_entry *prev;
54	struct               timeval  tv;
55	uint8_t              MPS_ctrl_ATM_addr[ATM_ESA_LEN];
56	struct atm_vcc       *shortcut;
57	uint32_t             packets_rcvd;
58	uint16_t             entry_state;
59	__be32             latest_ip_addr;    /* The src IP address of the last packet */
60	struct eg_ctrl_info  ctrl_info;
61	atomic_t             use;
62} eg_cache_entry;
63
64struct eg_cache_ops{
65	eg_cache_entry *(*add_entry)(struct k_message *msg, struct mpoa_client *client);
66	eg_cache_entry *(*get_by_cache_id)(__be32 cache_id, struct mpoa_client *client);
67	eg_cache_entry *(*get_by_tag)(__be32 cache_id, struct mpoa_client *client);
68	eg_cache_entry *(*get_by_vcc)(struct atm_vcc *vcc, struct mpoa_client *client);
69	eg_cache_entry *(*get_by_src_ip)(__be32 ipaddr, struct mpoa_client *client);
70	void            (*put)(eg_cache_entry *entry);
71	void            (*remove_entry)(eg_cache_entry *entry, struct mpoa_client *client);
72	void            (*update)(eg_cache_entry *entry, uint16_t holding_time);
73	void            (*clear_expired)(struct mpoa_client *client);
74	void            (*destroy_cache)(struct mpoa_client *mpc);
75};
76
77
78/* Ingress cache entry states */
79
80#define INGRESS_REFRESHING 3
81#define INGRESS_RESOLVED   2
82#define INGRESS_RESOLVING  1
83#define INGRESS_INVALID    0
84
85/* VCC states */
86
87#define OPEN   1
88#define CLOSED 0
89
90/* Egress cache entry states */
91
92#define EGRESS_RESOLVED 2
93#define EGRESS_PURGE    1
94#define EGRESS_INVALID  0
95
96#endif
97