1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/*
* Copyright (c) 2017-2019 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef SRC_VNET_SESSION_SESSION_TABLE_H_
#define SRC_VNET_SESSION_SESSION_TABLE_H_
#include <vppinfra/bihash_16_8.h>
#include <vppinfra/bihash_48_8.h>
typedef struct _session_lookup_table
{
/**
* Lookup tables for established sessions and listeners
*/
clib_bihash_16_8_t v4_session_hash;
clib_bihash_48_8_t v6_session_hash;
/**
* Lookup tables for half-open sessions
*/
clib_bihash_16_8_t v4_half_open_hash;
clib_bihash_48_8_t v6_half_open_hash;
/**
* Per fib proto and transport proto session rules tables
*/
u32 srtg_handle;
/** Flag that indicates if table has local scope */
u8 is_local;
/** Namespace this table belongs to */
u32 appns_index;
/** For global tables only one fib proto is active. This is a
* byproduct of fib table ids not necessarily being the same for
* identical fib idices of v4 and v6 fib protos */
u8 active_fib_proto;
/* Required for pool_get_aligned(...) */
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
} session_table_t;
#define SESSION_TABLE_INVALID_INDEX ((u32)~0)
#define SESSION_LOCAL_TABLE_PREFIX ((u32)~0)
#define SESSION_DROP_HANDLE (((u64)~0) - 1)
typedef int (*ip4_session_table_walk_fn_t) (clib_bihash_kv_16_8_t * kvp,
void *ctx);
void ip4_session_table_walk (clib_bihash_16_8_t * hash,
ip4_session_table_walk_fn_t fn, void *arg);
session_table_t *session_table_alloc (void);
session_table_t *session_table_get (u32 table_index);
u32 session_table_index (session_table_t * slt);
void session_table_init (session_table_t * slt, u8 fib_proto);
void session_table_free (session_table_t *slt, u8 fib_proto);
u32 session_table_memory_size (session_table_t *st);
u8 *format_session_table (u8 *s, va_list *args);
/* Internal, try not to use it! */
session_table_t *_get_session_tables ();
#define session_table_foreach(VAR, BODY) \
pool_foreach (VAR, _get_session_tables ()) BODY
void session_lookup_table_cleanup (u32 fib_proto, u32 fib_index);
#endif /* SRC_VNET_SESSION_SESSION_TABLE_H_ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
