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/*
* Copyright (c) 2022 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 "interest_manifest.h"
int_manifest_split_strategy_t disaggregation_strategy =
INT_MANIFEST_SPLIT_MAX_N_SUFFIXES;
unsigned N_SUFFIXES_PER_SPIT = 256;
bool interest_manifest_is_valid(interest_manifest_header_t *int_manifest_header,
size_t payload_length) {
if (int_manifest_header->n_suffixes == 0 ||
int_manifest_header->n_suffixes > MAX_SUFFIXES_IN_MANIFEST) {
ERROR("Manifest with invalid number of suffixes (%d)",
int_manifest_header->n_suffixes);
return false;
}
uint32_t empty_bitmap[BITMAP_SIZE] = {0};
if (memcmp(empty_bitmap, int_manifest_header->request_bitmap,
sizeof(empty_bitmap)) == 0) {
ERROR("Manifest with empty bitmap");
return false;
}
if (payload_length - sizeof(interest_manifest_header_t) !=
int_manifest_header->n_suffixes * sizeof(u32)) {
ERROR("Size of suffixes in intereset manifest (%d) is not equal to %d",
payload_length - sizeof(interest_manifest_header_t),
int_manifest_header->n_suffixes * sizeof(u32));
return false;
}
return true;
}
int interest_manifest_update_bitmap(const u32 *initial_bitmap,
u32 *bitmap_to_update, int start, int n,
int max_suffixes) {
int i = start, n_ones = 0;
while (i < n) {
if (is_bit_set(initial_bitmap, i)) {
set_bit(bitmap_to_update, i);
n_ones++;
}
i++;
if (n_ones == max_suffixes) break;
}
return i;
}
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