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/*
* Copyright (c) 2021-2023 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 "local_prefixes.h"
#include <hicn/core/forwarder.h>
#include <hicn/core/nexthops.h>
#include <hicn/core/mapme.h>
#define MAX_PREFIXES 10
struct local_prefixes_s {
hicn_prefix_t local_prefixes[MAX_PREFIXES];
unsigned len;
};
local_prefixes_t *create_local_prefixes() {
local_prefixes_t *lp = calloc(1, sizeof(local_prefixes_t));
if (!lp) return NULL;
return lp;
}
void free_local_prefixes(local_prefixes_t *lp) { free(lp); }
unsigned local_prefixes_get_len(local_prefixes_t *prefixes) {
return prefixes->len;
}
bool contain_prefix(const local_prefixes_t *prefixes,
const hicn_prefix_t *prefix) {
for (unsigned i = 0; i < prefixes->len; i++) {
if (hicn_prefix_equals(&(prefixes->local_prefixes[i]), prefix)) return true;
}
return false;
}
void local_prefixes_add_prefixes(local_prefixes_t *prefixes,
local_prefixes_t *new_prefixes) {
// if there is not enough space for the new prefixes they are not added
unsigned i = 0;
while ((i < new_prefixes->len) && (prefixes->len < MAX_PREFIXES)) {
if (!contain_prefix(prefixes, &(new_prefixes->local_prefixes[i]))) {
hicn_prefix_copy(&prefixes->local_prefixes[prefixes->len],
&new_prefixes->local_prefixes[i]);
prefixes->len++;
}
i++;
}
}
void local_prefixes_add_prefix(local_prefixes_t *prefixes,
const hicn_prefix_t *prefix) {
if (prefixes->len >= MAX_PREFIXES) return;
if (!contain_prefix(prefixes, prefix)) {
hicn_prefix_copy(&(prefixes->local_prefixes[prefixes->len]), prefix);
prefixes->len++;
}
}
void update_remote_node_paths(const void *nexthops, const void *forwarder,
local_prefixes_t *prefixes) {
if (!prefixes) return;
struct mapme_s *mapme = forwarder_get_mapme((forwarder_t *)forwarder);
fib_t *fib = forwarder_get_fib((forwarder_t *)forwarder);
for (unsigned i = 0; i < prefixes->len; i++) {
fib_entry_t *entry = fib_match_prefix(fib, &prefixes->local_prefixes[i]);
if (!entry) continue;
// XXX we don't want to force
mapme_set_adjacencies(mapme, entry, (nexthops_t *)nexthops, NULL);
}
}
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