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47 lines
1.8 KiB
C
47 lines
1.8 KiB
C
/*
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* Copyright (c) 2015, 2017-2019, Pelion and affiliates.
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef RPL_OBJECTIVE_H_
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#define RPL_OBJECTIVE_H_
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#include "ns_list.h"
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struct rpl_instance;
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struct rpl_neighbour;
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typedef struct rpl_objective {
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/* The Objective Code Point in DODAG Configuration Option */
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uint16_t ocp;
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/* Run the parent selection algorithm - see rpl_of0.c for detailed info */
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void (*parent_selection)(struct rpl_instance *);
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/* Return the path cost of a neighbour */
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uint16_t (*path_cost)(const struct rpl_neighbour *);
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bool (*neighbour_acceptable)(const struct rpl_instance *, const struct rpl_neighbour *);
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/* Could someone with specified rank be a significantly better candidate than the existing one? */
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/* (In future, this API could be extended to pass a metric pointer as well as rank) */
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bool (*possible_better_candidate)(const struct rpl_instance *, const struct rpl_neighbour *existing, uint16_t rank, uint16_t etx);
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ns_list_link_t link;
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} rpl_objective_t;
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/* Register a new objective function */
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void rpl_objective_register(rpl_objective_t *objective);
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/* Look up an objective function by OCP */
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rpl_objective_t *rpl_objective_lookup(uint16_t ocp);
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#endif /* RPL_OBJECTIVE_H_ */
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