| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you 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 __LINUX_ROUTING_QUEUEING_FQ_CODEL_HPP__ |
| #define __LINUX_ROUTING_QUEUEING_FQ_CODEL_HPP__ |
| |
| #include <stdint.h> |
| |
| #include <string> |
| |
| #include <stout/hashmap.hpp> |
| #include <stout/try.hpp> |
| |
| #include "linux/routing/handle.hpp" |
| |
| namespace routing { |
| namespace queueing { |
| namespace fq_codel { |
| |
| constexpr char KIND[] = "fq_codel"; |
| |
| |
| // NOTE: Root queueing discipline handle has to be X:0, so handle's |
| // secondary number has to be 0 here. There can be only one root |
| // queueing discipline on the egress side of a link and fq_codel is |
| // classless and hence there is only one instance of fq_codel per |
| // link. This allows us to fix the fq_codel handle. |
| |
| |
| // The default number of flows for the fq_codel queueing discipline. |
| extern const int DEFAULT_FLOWS; |
| |
| |
| // Returns true if there exists an fq_codel queueing discipline on the |
| // egress side of the link. |
| Try<bool> exists( |
| const std::string& link, |
| const Handle& parent); |
| |
| |
| // Creates a new fq_codel queueing discipline on the egress side of |
| // the link. Returns false if a queueing discipline already exists. |
| // NOTE: The root queueing discipline handle has to be X:0, so |
| // handle's secondary number must be zero if the parent is attached to |
| // EGRESS_ROOT. |
| Try<bool> create( |
| const std::string& link, |
| const Handle& parent, |
| const Option<Handle>& handle); |
| |
| |
| // Removes the fq_codel queueing discipline from the link. Return |
| // false if the fq_codel queueing discipline is not found. |
| Try<bool> remove( |
| const std::string& link, |
| const Handle& parent); |
| |
| |
| // Returns the set of common Traffic Control statistics for the |
| // fq_codel queueing discipline on the link, None() if the link or |
| // qdisc does not exist or an error if we cannot cannot determine the |
| // result. |
| Result<hashmap<std::string, uint64_t>> statistics( |
| const std::string& link, |
| const Handle& parent); |
| |
| |
| } // namespace fq_codel { |
| } // namespace queueing { |
| } // namespace routing { |
| |
| #endif // __LINUX_ROUTING_QUEUEING_FQ_CODEL_HPP__ |