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)(uint32_t dst_ip,
33                                      struct mpoa_client *client);
34        in_cache_entry *(*get)(uint32_t dst_ip, struct mpoa_client *client);
35        in_cache_entry *(*get_with_mask)(uint32_t dst_ip,
36					 struct mpoa_client *client,
37					 uint32_t 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        uint32_t             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)(uint32_t cache_id, struct mpoa_client *client);
67        eg_cache_entry *(*get_by_tag)(uint32_t 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)(uint32_t 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