Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 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 | /** |
Jim Thompson | f324dec | 2019-04-08 03:22:21 -0500 | [diff] [blame^] | 16 | * bier_disposition : The BIER disposition object |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 17 | * |
Jim Thompson | f324dec | 2019-04-08 03:22:21 -0500 | [diff] [blame^] | 18 | * A BIER disposition object is used to pop the BIER header for for-us |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 19 | * packets and steer the packet down the payload protocol specific graph |
| 20 | */ |
| 21 | |
| 22 | #ifndef __BIER_DISP_ENTRY_H__ |
| 23 | #define __BIER_DISP_ENTRY_H__ |
| 24 | |
| 25 | #include <vnet/bier/bier_types.h> |
| 26 | #include <vnet/fib/fib_types.h> |
| 27 | #include <vnet/dpo/dpo.h> |
| 28 | |
| 29 | /** |
Jim Thompson | f324dec | 2019-04-08 03:22:21 -0500 | [diff] [blame^] | 30 | * The BIER disposition object |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 31 | */ |
| 32 | typedef struct bier_disp_entry_t_ { |
| 33 | /** |
Dave Barach | eb987d3 | 2018-05-03 08:26:39 -0400 | [diff] [blame] | 34 | * Required for pool_get_aligned |
| 35 | */ |
| 36 | CLIB_CACHE_LINE_ALIGN_MARK(cacheline0); |
| 37 | |
| 38 | /** |
Neale Ranns | d792d9c | 2017-10-21 10:53:20 -0700 | [diff] [blame] | 39 | * The DPO contirubted from the per-payload protocol parents |
| 40 | * on cachline 1. |
| 41 | */ |
| 42 | struct |
| 43 | { |
| 44 | dpo_id_t bde_dpo; |
| 45 | u32 bde_rpf_id; |
| 46 | } bde_fwd[BIER_HDR_N_PROTO]; |
| 47 | |
| 48 | /** |
| 49 | * number of locks |
| 50 | */ |
| 51 | u32 bde_locks; |
| 52 | |
| 53 | /** |
| 54 | * The path-lists used by per-payload protocol parents. |
| 55 | * We don't add the disp entry to the graph as a sibling |
| 56 | * since there is nothing we can do with the updates to |
| 57 | * forwarding. |
| 58 | */ |
| 59 | fib_node_index_t bde_pl[BIER_HDR_N_PROTO]; |
| 60 | } bier_disp_entry_t; |
| 61 | |
| 62 | extern index_t bier_disp_entry_add_or_lock(void); |
| 63 | extern void bier_disp_entry_path_add(index_t bdei, |
| 64 | bier_hdr_proto_id_t pproto, |
| 65 | const fib_route_path_t *rpaths); |
| 66 | extern int bier_disp_entry_path_remove(index_t bdei, |
| 67 | bier_hdr_proto_id_t pproto, |
| 68 | const fib_route_path_t *rpaths); |
| 69 | |
| 70 | extern void bier_disp_entry_unlock(index_t bdi); |
| 71 | extern void bier_disp_entry_lock(index_t bdi); |
| 72 | |
| 73 | extern u8* format_bier_disp_entry(u8* s, va_list *ap); |
| 74 | |
| 75 | extern void bier_disp_entry_contribute_forwarding(index_t bdi, |
| 76 | dpo_id_t *dpo); |
| 77 | |
| 78 | extern bier_disp_entry_t *bier_disp_entry_pool; |
| 79 | |
| 80 | always_inline bier_disp_entry_t* |
| 81 | bier_disp_entry_get (index_t bdi) |
| 82 | { |
| 83 | return (pool_elt_at_index(bier_disp_entry_pool, bdi)); |
| 84 | } |
| 85 | |
| 86 | #endif |