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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.
*/
#ifndef __IP6_FIB_H__
#define __IP6_FIB_H__
#include <vlib/vlib.h>
#include <vnet/ip/format.h>
#include <vnet/fib/fib_entry.h>
#include <vnet/fib/fib_table.h>
#include <vnet/ip/lookup.h>
#include <vnet/dpo/load_balance.h>
extern fib_node_index_t ip6_fib_table_lookup(u32 fib_index,
const ip6_address_t *addr,
u32 len);
extern fib_node_index_t ip6_fib_table_lookup_exact_match(u32 fib_index,
const ip6_address_t *addr,
u32 len);
extern void ip6_fib_table_entry_remove(u32 fib_index,
const ip6_address_t *addr,
u32 len);
extern void ip6_fib_table_entry_insert(u32 fib_index,
const ip6_address_t *addr,
u32 len,
fib_node_index_t fib_entry_index);
extern void ip6_fib_table_destroy(u32 fib_index);
extern void ip6_fib_table_fwding_dpo_update(u32 fib_index,
const ip6_address_t *addr,
u32 len,
const dpo_id_t *dpo);
extern void ip6_fib_table_fwding_dpo_remove(u32 fib_index,
const ip6_address_t *addr,
u32 len,
const dpo_id_t *dpo);
u32 ip6_fib_table_fwding_lookup_with_if_index(ip6_main_t * im,
u32 sw_if_index,
const ip6_address_t * dst);
u32 ip6_fib_table_fwding_lookup(ip6_main_t * im,
u32 fib_index,
const ip6_address_t * dst);
/**
* @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 ip6_fib_table_walk(u32 fib_index,
fib_table_walk_fn_t fn,
void *ctx);
/**
* @biref return the DPO that the LB stacks on.
*/
always_inline u32
ip6_src_lookup_for_packet (ip6_main_t * im,
vlib_buffer_t * b,
ip6_header_t * i)
{
if (vnet_buffer (b)->ip.adj_index[VLIB_RX] == ~0)
{
const dpo_id_t *dpo;
index_t lbi;
lbi = ip6_fib_table_fwding_lookup_with_if_index(
im,
vnet_buffer (b)->sw_if_index[VLIB_RX],
&i->src_address);
dpo = load_balance_get_bucket_i(load_balance_get(lbi), 0);
if (dpo_is_adj(dpo))
{
vnet_buffer (b)->ip.adj_index[VLIB_RX] = dpo->dpoi_index;
}
}
return vnet_buffer (b)->ip.adj_index[VLIB_RX];
}
/**
* \brief Get or create an IPv6 fib.
*
* Get or create an IPv4 fib with the provided table ID.
*
* \param im
* ip4_main pointer.
* \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 ip6_fib_table_find_or_create_and_lock(u32 table_id);
extern u32 ip6_fib_table_create_and_lock(void);
static inline ip6_fib_t *
ip6_fib_get (fib_node_index_t index)
{
ASSERT(!pool_is_free_index(ip6_main.fibs, index));
return (&pool_elt_at_index (ip6_main.fibs, index)->v6);
}
static inline
u32 ip6_fib_index_from_table_id (u32 table_id)
{
ip6_main_t * im = &ip6_main;
uword * p;
p = hash_get (im->fib_index_by_table_id, table_id);
if (!p)
return ~0;
return p[0];
}
extern u32 ip6_fib_table_get_index_for_sw_if_index(u32 sw_if_index);
extern flow_hash_config_t ip6_fib_table_get_flow_hash_config(u32 fib_index);
#endif
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