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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.
*/
/**
* @brief bier_fmask_db : The BIER fmask Database
*/
#ifndef __BIER_FMASK_DB_H__
#define __BIER_FMASK_DB_H__
#include <vnet/ip/ip.h>
#include <vnet/fib/fib_types.h>
/**
* BIER header encapulsation types
*/
typedef enum bier_hdr_type_t_ {
/**
* BIER Header in MPLS networks
*/
BIER_HDR_O_MPLS,
/**
* BIER header in non-MPLS networks
*/
BIER_HDR_O_OTHER,
} __attribute__((packed)) bier_hdr_type_t;
/**
* BIER next-hop type
*/
typedef enum bier_nh_type_t_ {
/**
* BIER Header in MPLS networks
*/
BIER_NH_IP,
/**
* BIER header in non-MPLS networks
*/
BIER_NH_UDP,
} __attribute__((packed)) bier_nh_type_t;
/**
* A key/ID for a BIER forwarding Mas (FMask).
* This is a simplified version of a fib_route_path_t.
*/
typedef struct bier_fmask_id_t_ {
union {
/**
* next-hop of the peer
*/
ip46_address_t bfmi_nh;
/**
* ID of the next-hop object, e.g. a UDP-encap
*/
u32 bfmi_id;
};
/**
* The BIER table this fmask is in
*/
index_t bfmi_bti;
/**
* Type of BIER header this fmask supports
*/
bier_hdr_type_t bfmi_hdr_type;
/**
* Union discriminator
*/
bier_nh_type_t bfmi_nh_type;
} __attribute__((packed)) bier_fmask_id_t;
extern index_t
bier_fmask_db_find_or_create_and_lock(index_t bti,
const fib_route_path_t *rpath);
extern index_t bier_fmask_db_find (index_t bti,
const fib_route_path_t *rpath);
extern void bier_fmask_db_remove (const bier_fmask_id_t *fmid);
/**
* Walk all the BIER fmasks
*/
typedef walk_rc_t (*bier_fmask_walk_fn_t) (index_t bfmi, void *ctx);
extern void bier_fmask_db_walk(bier_fmask_walk_fn_t fn, void *ctx);
#endif
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