gid_dictionary.h

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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.
 */

#ifndef VNET_LISP_GPE_GID_DICTIONARY_H_
#define VNET_LISP_GPE_GID_DICTIONARY_H_

#include <vnet/vnet.h>
#include <vnet/lisp-cp/lisp_types.h>
#include <vppinfra/bihash_24_8.h>
#include <vppinfra/bihash_template.h>

#define GID_LOOKUP_MISS ((u32)~0)

/* Default size of the ip4 hash table */
#define IP4_LOOKUP_DEFAULT_HASH_NUM_BUCKETS (64 * 1024)
#define IP4_LOOKUP_DEFAULT_HASH_MEMORY_SIZE (32<<20)

/* Default size of the ip6 hash table */
#define IP6_LOOKUP_DEFAULT_HASH_NUM_BUCKETS (64 * 1024)
#define IP6_LOOKUP_DEFAULT_HASH_MEMORY_SIZE (32<<20)

typedef struct
{
  BVT(clib_bihash) ip4_lookup_table;

  /* bitmap/vector of mask widths to search */
  uword * ip4_non_empty_dst_address_length_bitmap;
  u8 * ip4_prefix_lengths_in_search_order;
  ip4_address_t ip4_fib_masks[33];
  u32 ip4_prefix_len_refcount[33];

  /* ip4 lookup table config parameters */
  u32 ip4_lookup_table_nbuckets;
  uword ip4_lookup_table_size;

  BVT(clib_bihash) ip6_lookup_table;

  /* bitmap/vector of mask widths to search */
  uword * ip6_non_empty_dst_address_length_bitmap;
  u8 * ip6_prefix_lengths_in_search_order;
  ip6_address_t ip6_fib_masks[129];
  u64 ip6_prefix_len_refcount[129];

  /* ip6 lookup table config parameters */
  u32 ip6_lookup_table_nbuckets;
  uword ip6_lookup_table_size;

} gid_dictionary_t;

u32
gid_dictionary_add_del (gid_dictionary_t *db, gid_address_t *key, u32 value,
                        u8 is_add);

u32
gid_dictionary_lookup (gid_dictionary_t * db, gid_address_t *key);

void
gid_dictionary_init (gid_dictionary_t * db);

#endif /* VNET_LISP_GPE_GID_DICTIONARY_H_ */