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mpoa_caches.h
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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 
10 struct mpoa_client;
11 
12 void atm_mpoa_init_cache(struct mpoa_client *mpc);
13 
14 typedef 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 
31 struct 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 
51 typedef 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 
64 struct 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
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