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_DISP_TABLE_H__
      17             : #define __BIER_DISP_TABLE_H__
      18             : 
      19             : #include <vnet/ip/ip.h>
      20             : #include <vnet/adj/adj.h>
      21             : #include <vnet/dpo/replicate_dpo.h>
      22             : 
      23             : #include <vnet/bier/bier_types.h>
      24             : #include <vnet/bier/bier_disp_entry.h>
      25             : 
      26             : /**
      27             :  * @brief
      28             :  *   A protocol Independent IP multicast FIB table
      29             :  */
      30             : typedef struct bier_disp_table_t_
      31             : {
      32             :     /**
      33             :      * Required for pool_get_aligned
      34             :      */
      35             :     CLIB_CACHE_LINE_ALIGN_MARK(cacheline0);
      36             : 
      37             :     /**
      38             :      * number of locks on the table
      39             :      */
      40             :     u16 bdt_locks;
      41             : 
      42             :     /**
      43             :      * Table ID (hash key) for this FIB.
      44             :      */
      45             :     u32 bdt_table_id;
      46             : 
      47             :     /**
      48             :      * The lookup DB based on sender BP. Value is the index of the
      49             :      * BIER disp object.
      50             :      */
      51             :     index_t bdt_db[BIER_BP_MAX];
      52             : } bier_disp_table_t;
      53             : 
      54             : /**
      55             :  * @brief
      56             :  *  Format the description/name of the table
      57             :  */
      58             : extern u8* format_bier_disp_table(u8* s, va_list *ap);
      59             : 
      60             : extern void bier_disp_table_entry_path_add(u32 table_id,
      61             :                                            bier_bp_t src,
      62             :                                            bier_hdr_proto_id_t payload_proto,
      63             :                                            const fib_route_path_t *rpath);
      64             : 
      65             : extern void bier_disp_table_entry_path_remove(u32 table_id,
      66             :                                               bier_bp_t src,
      67             :                                               bier_hdr_proto_id_t payload_proto,
      68             :                                               const fib_route_path_t *paths);
      69             : 
      70             : extern index_t bier_disp_table_find(u32 table_id);
      71             : 
      72             : 
      73             : extern index_t bier_disp_table_add_or_lock(u32 table_id);
      74             : extern void bier_disp_table_unlock_w_table_id(u32 table_id);
      75             : 
      76             : extern void bier_disp_table_unlock(index_t bdti);
      77             : extern void bier_disp_table_lock(index_t bdti);
      78             : extern void bier_disp_table_contribute_forwarding(index_t bdti,
      79             :                                                   dpo_id_t *dpo);
      80             : 
      81             : /**
      82             :  * Types and functions to walk all the entries in one BIER Table
      83             :  */
      84             : typedef void (*bier_disp_table_walk_fn_t)(const bier_disp_table_t *bdt,
      85             :                                           const bier_disp_entry_t *bde,
      86             :                                           u16 bp,
      87             :                                           void *ctx);
      88             : extern void bier_disp_table_walk(u32 table_id,
      89             :                                  bier_disp_table_walk_fn_t fn,
      90             :                                  void *ctx);
      91             : 
      92             : /**
      93             :  * @brief
      94             :  * Get a pointer to a FIB table
      95             :  */
      96             : extern bier_disp_table_t *bier_disp_table_pool;
      97             : 
      98             : static inline bier_disp_table_t *
      99         241 : bier_disp_table_get (index_t bdti)
     100             : {
     101         241 :     return (pool_elt_at_index(bier_disp_table_pool, bdti));
     102             : }
     103             : 
     104             : static inline index_t
     105         157 : bier_disp_table_lookup (index_t bdti,
     106             :                         bier_hdr_src_id_t src)
     107             : {
     108             :     bier_disp_table_t *bdt;
     109             : 
     110         157 :     bdt = bier_disp_table_get(bdti);
     111             : 
     112         157 :     return (bdt->bdt_db[src]);
     113             : }
     114             : 
     115             : #endif