From 0bfe5d8c792abcdbcf27bfcc7b7b353fba04aee2 Mon Sep 17 00:00:00 2001 From: Neale Ranns Date: Thu, 25 Aug 2016 15:29:12 +0100 Subject: A Protocol Independent Hierarchical FIB (VPP-352) Main Enhancements: - Protocol Independent FIB API - Hierarchical FIB entries. Dynamic recursive route resolution. - Extranet Support. - Integration of IP and MPLS forwarding. - Separation of FIB and Adjacency databases. - Data-Plane Object forwarding model. Change-Id: I52dc815c0d0aa8b493e3cf6b978568f3cc82296c Signed-off-by: Neale Ranns --- vnet/vnet/fib/mpls_fib.h | 106 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 106 insertions(+) create mode 100644 vnet/vnet/fib/mpls_fib.h (limited to 'vnet/vnet/fib/mpls_fib.h') diff --git a/vnet/vnet/fib/mpls_fib.h b/vnet/vnet/fib/mpls_fib.h new file mode 100644 index 00000000..42c9a865 --- /dev/null +++ b/vnet/vnet/fib/mpls_fib.h @@ -0,0 +1,106 @@ +/* + * mpls_fib.h: The Label/MPLS FIB + * + * Copyright (c) 2012 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 __MPLS_FIB_TABLE_H__ +#define __MPLS_FIB_TABLE_H__ + +#include +#include +#include +#include +#include +#include + +static inline mpls_fib_t* +mpls_fib_get (fib_node_index_t index) +{ + if (!pool_is_free_index(mpls_main.fibs, index)) + return (&(pool_elt_at_index(mpls_main.fibs, index)->mpls)); + return (NULL); +} + +extern u32 mpls_fib_table_find_or_create_and_lock(u32 table_id); +extern u32 mpls_fib_table_create_and_lock(void); +// extern mpls_fib_t * mpls_fib_find(u32 table_id); +extern u32 mpls_fib_index_from_table_id(u32 table_id); + +extern u8 *format_mpls_fib_table_name(u8 * s, va_list * args); + +extern fib_node_index_t mpls_fib_table_entry_add_from_ip_fib_entry ( + u32 table_id, + mpls_label_t label, + mpls_eos_bit_t eos, + fib_node_index_t fib_entry_index); + + +extern fib_node_index_t mpls_fib_table_lookup(const mpls_fib_t *mf, + mpls_label_t label, + mpls_eos_bit_t eos); + +extern void mpls_fib_table_entry_remove(mpls_fib_t *mf, + mpls_label_t label, + mpls_eos_bit_t eos); +extern void mpls_fib_table_entry_insert(mpls_fib_t *mf, + mpls_label_t label, + mpls_eos_bit_t eos, + fib_node_index_t fei); +extern void mpls_fib_table_destroy(mpls_fib_t *mf); + + + +extern void mpls_fib_forwarding_table_update(mpls_fib_t *mf, + mpls_label_t label, + mpls_eos_bit_t eos, + const dpo_id_t *dpo); +extern void mpls_fib_forwarding_table_reset(mpls_fib_t *mf, + mpls_label_t label, + mpls_eos_bit_t eos); + +/** + * @brief + * Lookup a label and EOS bit in the MPLS_FIB table to retrieve the + * load-balance index to be used for packet forwarding. + */ +static inline index_t +mpls_fib_table_forwarding_lookup (u32 mpls_fib_index, + const mpls_unicast_header_t *hdr) +{ + mpls_label_t label; + mpls_fib_t *mf; + u32 key; + + label = clib_net_to_host_u32(hdr->label_exp_s_ttl); + key = (vnet_mpls_uc_get_label(label) << 1) | vnet_mpls_uc_get_s(label); + + mf = mpls_fib_get(mpls_fib_index); + + return (mf->mf_lbs[key]); +} + +static inline u32 +mpls_fib_table_get_index_for_sw_if_index (u32 sw_if_index) +{ + mpls_main_t *mm = &mpls_main; + + ASSERT(vec_len(mm->fib_index_by_sw_if_index) < sw_if_index); + + return (mm->fib_index_by_sw_if_index[sw_if_index]); +} + +extern flow_hash_config_t mpls_fib_table_get_flow_hash_config(u32 fib_index); + +#endif -- cgit 1.2.3-korg