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/*
* Copyright (c) 2016 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.
*/
/**
* @brief The IPv4 FIB Hash table
*/
#ifndef __IP4_FIB_HASH_H__
#define __IP4_FIB_HASH_H__
#include <vlib/vlib.h>
#include <vnet/ip/ip.h>
typedef struct ip4_fib_hash_t_
{
/* Hash table for each prefix length mapping. */
uword *fib_entry_by_dst_address[33];
/* Table ID (hash key) for this FIB. */
u32 table_id;
} ip4_fib_hash_t;
extern fib_node_index_t ip4_fib_hash_table_lookup(const ip4_fib_hash_t *fib,
const ip4_address_t *addr,
u32 len);
extern index_t ip4_fib_hash_table_lookup_lb(const ip4_fib_hash_t *fib,
const ip4_address_t *addr);
extern fib_node_index_t ip4_fib_hash_table_lookup_exact_match(const ip4_fib_hash_t *fib,
const ip4_address_t *addr,
u32 len);
extern void ip4_fib_hash_table_entry_remove(ip4_fib_hash_t *fib,
const ip4_address_t *addr,
u32 len);
extern void ip4_fib_hash_table_entry_insert(ip4_fib_hash_t *fib,
const ip4_address_t *addr,
u32 len,
fib_node_index_t fib_entry_index);
extern void ip4_fib_hash_table_init(ip4_fib_hash_t *fib);
extern void ip4_fib_hash_table_destroy(ip4_fib_hash_t *fib);
/**
* @brief Walk all entries in a FIB table
* N.B: This is NOT safe to deletes. If you need to delete walk the whole
* table and store elements in a vector, then delete the elements
*/
extern void ip4_fib_hash_table_walk(ip4_fib_hash_t *fib,
fib_table_walk_fn_t fn,
void *ctx);
/**
* @brief Walk all entries in a sub-tree of the FIB table
* N.B: This is NOT safe to deletes. If you need to delete walk the whole
* table and store elements in a vector, then delete the elements
*/
extern void ip4_fib_hash_table_sub_tree_walk(ip4_fib_hash_t *fib,
const fib_prefix_t *root,
fib_table_walk_fn_t fn,
void *ctx);
#endif
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