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/*
* Copyright (c) 2017 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>
#include <vnet/session/session_rules_table.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
*/
session_rules_table_t session_rules[TRANSPORT_N_PROTO];
/** 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;
} session_table_t;
#define SESSION_TABLE_INVALID_INDEX ((u32)~0)
#define SESSION_LOCAL_TABLE_PREFIX ((u32)~0)
#define SESSION_INVALID_INDEX ((u32)~0)
#define SESSION_INVALID_HANDLE ((u64)~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_cb (clib_bihash_kv_16_8_t * kvp, void *arg);
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);
/* 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)
#endif /* SRC_VNET_SESSION_SESSION_TABLE_H_ */
/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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