2 * Copyright (c) 2017-2019 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #ifndef SRC_VNET_SESSION_SESSION_TABLE_H_
17 #define SRC_VNET_SESSION_SESSION_TABLE_H_
19 #include <vppinfra/bihash_16_8.h>
20 #include <vppinfra/bihash_48_8.h>
21 #include <vnet/session/session_rules_table.h>
23 typedef struct _session_lookup_table
26 * Lookup tables for established sessions and listeners
28 clib_bihash_16_8_t v4_session_hash;
29 clib_bihash_48_8_t v6_session_hash;
32 * Lookup tables for half-open sessions
34 clib_bihash_16_8_t v4_half_open_hash;
35 clib_bihash_48_8_t v6_half_open_hash;
38 * Per fib proto and transport proto session rules tables
40 session_rules_table_t session_rules[TRANSPORT_N_PROTO];
42 /** Flag that indicates if table has local scope */
45 /** Namespace this table belongs to */
48 /** For global tables only one fib proto is active. This is a
49 * byproduct of fib table ids not necessarily being the same for
50 * identical fib idices of v4 and v6 fib protos */
52 /* Required for pool_get_aligned(...) */
53 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
56 #define SESSION_TABLE_INVALID_INDEX ((u32)~0)
57 #define SESSION_LOCAL_TABLE_PREFIX ((u32)~0)
58 #define SESSION_DROP_HANDLE (((u64)~0) - 1)
60 typedef int (*ip4_session_table_walk_fn_t) (clib_bihash_kv_16_8_t * kvp,
63 void ip4_session_table_walk_cb (clib_bihash_kv_16_8_t * kvp, void *arg);
64 void ip4_session_table_walk (clib_bihash_16_8_t * hash,
65 ip4_session_table_walk_fn_t fn, void *arg);
67 session_table_t *session_table_alloc (void);
68 session_table_t *session_table_get (u32 table_index);
69 u32 session_table_index (session_table_t * slt);
70 void session_table_init (session_table_t * slt, u8 fib_proto);
72 /* Internal, try not to use it! */
73 session_table_t *_get_session_tables ();
75 #define session_table_foreach(VAR, BODY) \
76 pool_foreach(VAR, _get_session_tables (), BODY)
78 #endif /* SRC_VNET_SESSION_SESSION_TABLE_H_ */
81 * fd.io coding-style-patch-verification: ON
84 * eval: (c-set-style "gnu")