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-rw-r--r--vnet/vnet/fib/ip4_fib.h141
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diff --git a/vnet/vnet/fib/ip4_fib.h b/vnet/vnet/fib/ip4_fib.h
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--- a/vnet/vnet/fib/ip4_fib.h
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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
- *
- * FIBs are composed of two prefix data-bases (akak tables). The non-forwarding
- * table contains all the routes that the control plane has programmed, the
- * forwarding table contains the sub-set of those routes that can be used to
- * forward packets.
- * In the IPv4 FIB the non-forwarding table is an array of hash tables indexed
- * by mask length, the forwarding table is an mtrie
- *
- * This IPv4 FIB is used by the protocol independent FIB. So directly using
- * this APIs in client code is not encouraged. However, this IPv4 FIB can be
- * used if all the client wants is an IPv4 prefix data-base
- */
-
-#ifndef __IP4_FIB_H__
-#define __IP4_FIB_H__
-
-#include <vlib/vlib.h>
-#include <vnet/ip/ip.h>
-#include <vnet/fib/fib_entry.h>
-#include <vnet/fib/fib_table.h>
-
-extern fib_node_index_t ip4_fib_table_lookup(const ip4_fib_t *fib,
- const ip4_address_t *addr,
- u32 len);
-extern fib_node_index_t ip4_fib_table_lookup_exact_match(const ip4_fib_t *fib,
- const ip4_address_t *addr,
- u32 len);
-
-extern void ip4_fib_table_entry_remove(ip4_fib_t *fib,
- const ip4_address_t *addr,
- u32 len);
-
-extern void ip4_fib_table_entry_insert(ip4_fib_t *fib,
- const ip4_address_t *addr,
- u32 len,
- fib_node_index_t fib_entry_index);
-extern void ip4_fib_table_destroy(ip4_fib_t *fib);
-
-extern void ip4_fib_table_fwding_dpo_update(ip4_fib_t *fib,
- const ip4_address_t *addr,
- u32 len,
- const dpo_id_t *dpo);
-
-extern void ip4_fib_table_fwding_dpo_remove(ip4_fib_t *fib,
- const ip4_address_t *addr,
- u32 len,
- const dpo_id_t *dpo);
-extern u32 ip4_fib_table_lookup_lb (ip4_fib_t *fib,
- const ip4_address_t * dst);
-
-/**
- * @brief Get the FIB at the given index
- */
-static inline ip4_fib_t *
-ip4_fib_get (u32 index)
-{
- return (&(pool_elt_at_index(ip4_main.fibs, index)->v4));
-}
-
-always_inline u32
-ip4_fib_lookup (ip4_main_t * im, u32 sw_if_index, ip4_address_t * dst)
-{
- return (ip4_fib_table_lookup_lb(
- ip4_fib_get(vec_elt (im->fib_index_by_sw_if_index, sw_if_index)),
- dst));
-}
-
-/**
- * @brief Get or create an IPv4 fib.
- *
- * Get or create an IPv4 fib with the provided table ID.
- *
- * @param table_id
- * When set to \c ~0, an arbitrary and unused fib ID is picked
- * and can be retrieved with \c ret->table_id.
- * Otherwise, the fib ID to be used to retrieve or create the desired fib.
- * @returns A pointer to the retrieved or created fib.
- *
- */
-extern u32 ip4_fib_table_find_or_create_and_lock(u32 table_id);
-extern u32 ip4_fib_table_create_and_lock(void);
-
-
-static inline
-u32 ip4_fib_index_from_table_id (u32 table_id)
-{
- ip4_main_t * im = &ip4_main;
- uword * p;
-
- p = hash_get (im->fib_index_by_table_id, table_id);
- if (!p)
- return ~0;
-
- return p[0];
-}
-
-extern u32 ip4_fib_table_get_index_for_sw_if_index(u32 sw_if_index);
-
-extern flow_hash_config_t ip4_fib_table_get_flow_hash_config(u32 fib_index);
-
-
-always_inline index_t
-ip4_fib_forwarding_lookup (u32 fib_index,
- const ip4_address_t * addr)
-{
- ip4_fib_mtrie_leaf_t leaf;
- ip4_fib_mtrie_t * mtrie;
-
- mtrie = &ip4_fib_get(fib_index)->mtrie;
-
- leaf = IP4_FIB_MTRIE_LEAF_ROOT;
- leaf = ip4_fib_mtrie_lookup_step (mtrie, leaf, addr, 0);
- leaf = ip4_fib_mtrie_lookup_step (mtrie, leaf, addr, 1);
- leaf = ip4_fib_mtrie_lookup_step (mtrie, leaf, addr, 2);
- leaf = ip4_fib_mtrie_lookup_step (mtrie, leaf, addr, 3);
-
- /* Handle default route. */
- leaf = (leaf == IP4_FIB_MTRIE_LEAF_EMPTY ? mtrie->default_leaf : leaf);
-
- return (ip4_fib_mtrie_leaf_get_adj_index(leaf));
-}
-
-
-#endif
-