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Tomasz Wasilczyk87329672019-07-12 11:43:00 -07001/*
2 * Copyright (C) 2019 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 <string>
20
Tomasz Wasilczyk55f21932019-12-20 09:20:24 -080021namespace android::netdevice {
Tomasz Wasilczyk87329672019-07-12 11:43:00 -070022
23/**
24 * Returns the index of a given network interface.
25 *
26 * If the syscall to check the index fails with other error than ENODEV, it gets logged and the
27 * return value indicates the interface doesn't exists.
28 *
29 * \param ifname Interface to check
30 * \return Interface index, or 0 if the interface doesn't exist
31 */
32unsigned int nametoindex(const std::string& ifname);
33
Tomasz Wasilczyk55f21932019-12-20 09:20:24 -080034} // namespace android::netdevice