/* * 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_disposition : The BIER disposition object * * A BIER disposition 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 <vnet/bier/bier_types.h> #include <vnet/fib/fib_types.h> #include <vnet/dpo/dpo.h> /** * The BIER disposition object */ typedef struct bier_disp_entry_t_ { /** * Required for pool_get_aligned */ CLIB_CACHE_LINE_ALIGN_MARK(cacheline0); /** * The DPO contributed from the per-payload protocol parents * on cacheline 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