1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef MPOA_CACHES_H
3 #define MPOA_CACHES_H
4
5 #include <linux/time64.h>
6 #include <linux/netdevice.h>
7 #include <linux/types.h>
8 #include <linux/atm.h>
9 #include <linux/atmdev.h>
10 #include <linux/atmmpc.h>
11 #include <linux/refcount.h>
12
13 struct mpoa_client;
14
15 void atm_mpoa_init_cache(struct mpoa_client *mpc);
16
17 typedef struct in_cache_entry {
18 struct in_cache_entry *next;
19 struct in_cache_entry *prev;
20 time64_t time;
21 time64_t reply_wait;
22 time64_t hold_down;
23 uint32_t packets_fwded;
24 uint16_t entry_state;
25 uint32_t retry_time;
26 uint32_t refresh_time;
27 uint32_t count;
28 struct atm_vcc *shortcut;
29 uint8_t MPS_ctrl_ATM_addr[ATM_ESA_LEN];
30 struct in_ctrl_info ctrl_info;
31 refcount_t use;
32 } in_cache_entry;
33
34 struct in_cache_ops{
35 in_cache_entry *(*add_entry)(__be32 dst_ip,
36 struct mpoa_client *client);
37 in_cache_entry *(*get)(__be32 dst_ip, struct mpoa_client *client);
38 in_cache_entry *(*get_with_mask)(__be32 dst_ip,
39 struct mpoa_client *client,
40 __be32 mask);
41 in_cache_entry *(*get_by_vcc)(struct atm_vcc *vcc,
42 struct mpoa_client *client);
43 void (*put)(in_cache_entry *entry);
44 void (*remove_entry)(in_cache_entry *delEntry,
45 struct mpoa_client *client );
46 int (*cache_hit)(in_cache_entry *entry,
47 struct mpoa_client *client);
48 void (*clear_count)(struct mpoa_client *client);
49 void (*check_resolving)(struct mpoa_client *client);
50 void (*refresh)(struct mpoa_client *client);
51 void (*destroy_cache)(struct mpoa_client *mpc);
52 };
53
54 typedef struct eg_cache_entry{
55 struct eg_cache_entry *next;
56 struct eg_cache_entry *prev;
57 time64_t time;
58 uint8_t MPS_ctrl_ATM_addr[ATM_ESA_LEN];
59 struct atm_vcc *shortcut;
60 uint32_t packets_rcvd;
61 uint16_t entry_state;
62 __be32 latest_ip_addr; /* The src IP address of the last packet */
63 struct eg_ctrl_info ctrl_info;
64 refcount_t use;
65 } eg_cache_entry;
66
67 struct eg_cache_ops{
68 eg_cache_entry *(*add_entry)(struct k_message *msg, struct mpoa_client *client);
69 eg_cache_entry *(*get_by_cache_id)(__be32 cache_id, struct mpoa_client *client);
70 eg_cache_entry *(*get_by_tag)(__be32 cache_id, struct mpoa_client *client);
71 eg_cache_entry *(*get_by_vcc)(struct atm_vcc *vcc, struct mpoa_client *client);
72 eg_cache_entry *(*get_by_src_ip)(__be32 ipaddr, struct mpoa_client *client);
73 void (*put)(eg_cache_entry *entry);
74 void (*remove_entry)(eg_cache_entry *entry, struct mpoa_client *client);
75 void (*update)(eg_cache_entry *entry, uint16_t holding_time);
76 void (*clear_expired)(struct mpoa_client *client);
77 void (*destroy_cache)(struct mpoa_client *mpc);
78 };
79
80
81 /* Ingress cache entry states */
82
83 #define INGRESS_REFRESHING 3
84 #define INGRESS_RESOLVED 2
85 #define INGRESS_RESOLVING 1
86 #define INGRESS_INVALID 0
87
88 /* VCC states */
89
90 #define OPEN 1
91 #define CLOSED 0
92
93 /* Egress cache entry states */
94
95 #define EGRESS_RESOLVED 2
96 #define EGRESS_PURGE 1
97 #define EGRESS_INVALID 0
98
99 #endif
100
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