1 /*
2  * Copyright (C) 2020 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #pragma once
18 
19 #include <optional>
20 #include <string>
21 
22 namespace android::netdevice::ethtool {
23 
24 /**
25  * Fetch a single value with ethtool_value.
26  *
27  * \see linux/ethtool.h
28  * \param ifname Interface to fetch data for
29  * \param command Fetch command (ETHTOOL_G*)
30  * \return value, or nullopt if fetch failed
31  */
32 std::optional<uint32_t> getValue(const std::string& ifname, uint32_t command);
33 
34 /**
35  * Set a single value with ethtool_value.
36  *
37  * \see linux/ethtool.h
38  * \param ifname Interface to set data for
39  * \param command Set command (ETHTOOL_S*)
40  * \param value New value
41  * \return true if succeeded, false otherwise
42  */
43 bool setValue(const std::string& ifname, uint32_t command, uint32_t value);
44 
45 }  // namespace android::netdevice::ethtool
46