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 #include <vnet/session/session_table.h>
17 #include <vnet/session/session.h>
20 * Pool of session tables
22 static session_table_t *lookup_tables;
25 _get_session_tables (void)
31 session_table_alloc (void)
34 pool_get_aligned (lookup_tables, slt, CLIB_CACHE_LINE_BYTES);
35 clib_memset (slt, 0, sizeof (*slt));
40 session_table_index (session_table_t * slt)
42 return (slt - lookup_tables);
46 session_table_get (u32 table_index)
48 if (pool_is_free_index (lookup_tables, table_index))
50 return pool_elt_at_index (lookup_tables, table_index);
53 #define foreach_hash_table_parameter \
54 _(v4,session,buckets,20000) \
55 _(v4,session,memory,(64<<20)) \
56 _(v6,session,buckets,20000) \
57 _(v6,session,memory,(64<<20)) \
58 _(v4,halfopen,buckets,20000) \
59 _(v4,halfopen,memory,(64<<20)) \
60 _(v6,halfopen,buckets,20000) \
61 _(v6,halfopen,memory,(64<<20))
64 * Initialize session table hash tables
66 * If vpp configured with set of table parameters it uses them,
67 * otherwise it uses defaults above.
70 session_table_init (session_table_t * slt, u8 fib_proto)
72 u8 all = fib_proto > FIB_PROTOCOL_IP6 ? 1 : 0;
75 #define _(af,table,parm,value) \
76 u32 configured_##af##_##table##_table_##parm = value;
77 foreach_hash_table_parameter;
80 #define _(af,table,parm,value) \
81 if (session_manager_main.configured_##af##_##table##_table_##parm) \
82 configured_##af##_##table##_table_##parm = \
83 session_manager_main.configured_##af##_##table##_table_##parm;
84 foreach_hash_table_parameter;
87 if (fib_proto == FIB_PROTOCOL_IP4 || all)
89 clib_bihash_init_16_8 (&slt->v4_session_hash, "v4 session table",
90 configured_v4_session_table_buckets,
91 configured_v4_session_table_memory);
92 clib_bihash_init_16_8 (&slt->v4_half_open_hash, "v4 half-open table",
93 configured_v4_halfopen_table_buckets,
94 configured_v4_halfopen_table_memory);
96 if (fib_proto == FIB_PROTOCOL_IP6 || all)
98 clib_bihash_init_48_8 (&slt->v6_session_hash, "v6 session table",
99 configured_v6_session_table_buckets,
100 configured_v6_session_table_memory);
101 clib_bihash_init_48_8 (&slt->v6_half_open_hash, "v6 half-open table",
102 configured_v6_halfopen_table_buckets,
103 configured_v6_halfopen_table_memory);
106 for (i = 0; i < TRANSPORT_N_PROTO; i++)
107 session_rules_table_init (&slt->session_rules[i]);
110 typedef struct _ip4_session_table_walk_ctx_t
112 ip4_session_table_walk_fn_t fn;
114 } ip4_session_table_walk_ctx_t;
117 ip4_session_table_walk_cb (clib_bihash_kv_16_8_t * kvp, void *arg)
119 ip4_session_table_walk_ctx_t *ctx = arg;
120 ctx->fn (kvp, ctx->ctx);
124 ip4_session_table_walk (clib_bihash_16_8_t * hash,
125 ip4_session_table_walk_fn_t fn, void *arg)
127 ip4_session_table_walk_ctx_t ctx = {
131 clib_bihash_foreach_key_value_pair_16_8 (hash, ip4_session_table_walk_cb,
137 * fd.io coding-style-patch-verification: ON
140 * eval: (c-set-style "gnu")