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/*
* 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 <vnet/bier/bier_types.h>
#include <vnet/fib/fib_types.h>
#include <vnet/dpo/dpo.h>
/**
* The BIER dispositon object
*/
typedef struct bier_disp_entry_t_ {
/**
* Required for pool_get_aligned
*/
CLIB_CACHE_LINE_ALIGN_MARK(cacheline0);
/**
* 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
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