Files
vpp/src/plugins/map/lpm.h
Ole Troan 91bfa6e266 MAP: Add longest matching prefix (LPM) data structures
In preparation for adding input feature MAP support, as opposed to
going via the FIB, add MAP's own LPM data structures.

Change-Id: Ie363f0961b0ac9dde2a0fb76cb0c58c904876974
Signed-off-by: Ole Troan <ot@cisco.com>
2018-12-18 13:02:45 +00:00

39 lines
1.1 KiB
C

/*
* Copyright (c) 2018 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.
*/
#include <vppinfra/types.h>
#include <vppinfra/bihash_24_8.h>
enum lpm_type_e {
LPM_TYPE_KEY32,
LPM_TYPE_KEY128,
};
typedef struct lpm_ {
void (*add) (struct lpm_ *lpm, void *addr_v, u8 pfxlen, u32 value);
void (*delete) (struct lpm_ *lpm, void *addr_v, u8 pfxlen);
u32 (*lookup) (struct lpm_ *lpm, void *addr_v, u8 pfxlen);
/* IPv4 LPM */
uword *hash[33];
/* IPv6 LPM */
BVT (clib_bihash) bihash;
uword *prefix_lengths_bitmap;
u32 prefix_length_refcount[129];
} lpm_t;
lpm_t *lpm_table_init (enum lpm_type_e lpm_type);