Line data    Source code

       1             : /*
       2             :  * Copyright (c) 2016 Cisco and/or its affiliates.
       3             :  * Licensed under the Apache License, Version 2.0 (the "License");
       4             :  * you may not use this file except in compliance with the License.
       5             :  * You may obtain a copy of the License at:
       6             :  *
       7             :  *     http://www.apache.org/licenses/LICENSE-2.0
       8             :  *
       9             :  * Unless required by applicable law or agreed to in writing, software
      10             :  * distributed under the License is distributed on an "AS IS" BASIS,
      11             :  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      12             :  * See the License for the specific language governing permissions and
      13             :  * limitations under the License.
      14             :  */
      15             : 
      16             : #ifndef __BIER_BIFT_TABLE_H__
      17             : #define __BIER_BIFT_TABLE_H__
      18             : 
      19             : #include <vnet/dpo/dpo.h>
      20             : #include <vnet/bier/bier_types.h>
      21             : #include <vnet/mpls/packet.h>
      22             : 
      23             : /*
      24             :  * the lookup table used to get from a BIFT_ID to a load-balance.
      25             :  * As per-draft draft-ietf-bier-mpls-encapsulation-10 this is the
      26             :  * use case for non-MPLS networks
      27             :  */
      28             : #define BIER_BIFT_N_ENTRIES (1 << 20)
      29             : typedef struct bier_bfit_table_t_
      30             : {
      31             :     /**
      32             :      * Forwarding information for each BIFT ID
      33             :      */
      34             :     dpo_id_t bblt_dpos[BIER_BIFT_N_ENTRIES];
      35             : 
      36             :     /**
      37             :      * The number of entries in the table
      38             :      */
      39             :     u32 bblt_n_entries;
      40             : } bier_bfit_table_t;
      41             : 
      42             : 
      43             : extern void bier_bift_table_entry_add(bier_bift_id_t id,
      44             :                                       const dpo_id_t *dpo);
      45             : 
      46             : extern void bier_bift_table_entry_remove(bier_bift_id_t id);
      47             : 
      48             : /**
      49             :  * Global BIFT table
      50             :  */
      51             : extern bier_bfit_table_t *bier_bift_table;
      52             : 
      53             : static inline const dpo_id_t*
      54           1 : bier_bift_dp_lookup (bier_bift_id_t key_host_order)
      55             : {
      56           1 :     return (&bier_bift_table->bblt_dpos[vnet_mpls_uc_get_label(key_host_order)]);
      57             : }
      58             : #endif