From d792d9c01e60656cbfe1b0f1fd6a9b125f5dab0c Mon Sep 17 00:00:00 2001 From: Neale Ranns Date: Sat, 21 Oct 2017 10:53:20 -0700 Subject: BIER - see draft-ietf-bier-mpls-encapsulation-10 - midpoint, head and tail functions - supported payload protocols; IPv4 and IPv6 only. Change-Id: I59d7363bb6fdfdce8e4016a68a9c8f5a5e5791cb Signed-off-by: Neale Ranns --- src/vnet/bier/bier_disp_entry.h | 81 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 src/vnet/bier/bier_disp_entry.h (limited to 'src/vnet/bier/bier_disp_entry.h') diff --git a/src/vnet/bier/bier_disp_entry.h b/src/vnet/bier/bier_disp_entry.h new file mode 100644 index 00000000000..34ca5d4a09a --- /dev/null +++ b/src/vnet/bier/bier_disp_entry.h @@ -0,0 +1,81 @@ +/* + * 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. + */ +/** + * bier_dispositon : The BIER dispositon object + * + * A BIER dispositon object is used to pop the BIER header for for-us + * packets and steer the packet down the payload protocol specific graph + */ + +#ifndef __BIER_DISP_ENTRY_H__ +#define __BIER_DISP_ENTRY_H__ + +#include +#include +#include + +/** + * The BIER dispositon object + */ +typedef struct bier_disp_entry_t_ { + /** + * The DPO contirubted from the per-payload protocol parents + * on cachline 1. + */ + struct + { + dpo_id_t bde_dpo; + u32 bde_rpf_id; + } bde_fwd[BIER_HDR_N_PROTO]; + + /** + * number of locks + */ + u32 bde_locks; + + /** + * The path-lists used by per-payload protocol parents. + * We don't add the disp entry to the graph as a sibling + * since there is nothing we can do with the updates to + * forwarding. + */ + fib_node_index_t bde_pl[BIER_HDR_N_PROTO]; +} bier_disp_entry_t; + +extern index_t bier_disp_entry_add_or_lock(void); +extern void bier_disp_entry_path_add(index_t bdei, + bier_hdr_proto_id_t pproto, + const fib_route_path_t *rpaths); +extern int bier_disp_entry_path_remove(index_t bdei, + bier_hdr_proto_id_t pproto, + const fib_route_path_t *rpaths); + +extern void bier_disp_entry_unlock(index_t bdi); +extern void bier_disp_entry_lock(index_t bdi); + +extern u8* format_bier_disp_entry(u8* s, va_list *ap); + +extern void bier_disp_entry_contribute_forwarding(index_t bdi, + dpo_id_t *dpo); + +extern bier_disp_entry_t *bier_disp_entry_pool; + +always_inline bier_disp_entry_t* +bier_disp_entry_get (index_t bdi) +{ + return (pool_elt_at_index(bier_disp_entry_pool, bdi)); +} + +#endif -- cgit 1.2.3-korg