diff options
Diffstat (limited to 'hicn-light/src/hicn/strategies/replication.c')
-rw-r--r-- | hicn-light/src/hicn/strategies/replication.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/hicn-light/src/hicn/strategies/replication.c b/hicn-light/src/hicn/strategies/replication.c new file mode 100644 index 000000000..86a3e3431 --- /dev/null +++ b/hicn-light/src/hicn/strategies/replication.c @@ -0,0 +1,98 @@ +/* + * Copyright (c) 2021 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 <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> + +#include <hicn/hicn-light/config.h> + +#include <hicn/core/nexthops.h> +#include <hicn/core/strategy.h> +#include <hicn/core/strategy_vft.h> + +#include "replication.h" + +/* Shorthand */ +#define strategy_state_t strategy_replication_state_t + +static int strategy_replication_initialize(strategy_entry_t *entry, + const void *forwarder) { + entry->forwarder = forwarder; + strategy_state_t *state = &entry->state.replication; + state->prev_nexthops = malloc(sizeof(nexthops_t)); + *((nexthops_t *)state->prev_nexthops) = NEXTHOPS_EMPTY; + return 0; +} + +static int strategy_replication_finalize(strategy_entry_t *entry) { + /* Nothing to do */ + strategy_state_t *state = &entry->state.replication; + free(state->prev_nexthops); + return 0; +} + +static int strategy_replication_add_nexthop(strategy_entry_t *entry, + nexthops_t *nexthops, + off_t offset) { + /* Nothing to do */ + return 0; +} + +static int strategy_replication_remove_nexthop(strategy_entry_t *entry, + nexthops_t *nexthops, + off_t offset) { + /* Nothing to do */ + return 0; +} + +static nexthops_t *strategy_replication_lookup_nexthops( + strategy_entry_t *entry, nexthops_t *nexthops, const msgbuf_t *msgbuf) { + // if nexthops is different from prev_nexthops send updates + strategy_state_t *state = &entry->state.replication; + + if (!nexthops_equal((nexthops_t *)state->prev_nexthops, nexthops)) { + // send updates + strategy_replication_options_t *options = &entry->options.replication; + update_remote_node_paths(nexthops, entry->forwarder, + options->local_prefixes); + + // update next hops + nexthops_copy(nexthops, (nexthops_t *)state->prev_nexthops); + } + + // Return all next hops + return nexthops; +} + +static int strategy_replication_on_data(strategy_entry_t *entry, + nexthops_t *nexthops, + const nexthops_t *data_nexthops, + const msgbuf_t *msgbuf, + Ticks pitEntryCreation, + Ticks objReception) { + /* Nothing to do */ + return 0; +} + +static int strategy_replication_on_timeout(strategy_entry_t *entry, + nexthops_t *nexthops, + const nexthops_t *timeout_nexthops) { + /* Nothing to do */ + return 0; +} + +DECLARE_STRATEGY(replication); |