1 /*
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 #pragma once
17 
18 #include <cstdint>
19 #include <set>
20 #include <string>
21 
22 namespace cuttlefish {
23 // Check network interface with given name exists, such as cvd-ebr.
24 bool NetworkInterfaceExists(const std::string& interface_name);
25 
26 #ifdef __linux__
27 // Returns a list of TAP devices that have open file descriptors
28 std::set<std::string> TapInterfacesInUse();
29 #endif
30 
31 void GenerateCorrespondingIpv6ForMac(const std::uint8_t mac[6], std::uint8_t out[16]);
32 void GenerateMobileMacForInstance(int index, std::uint8_t out[6]);
33 void GenerateEthMacForInstance(int index, std::uint8_t out[6]);
34 void GenerateWifiMacForInstance(int index, std::uint8_t out[6]);
35 
36 std::string MacAddressToString(const std::uint8_t mac[6]);
37 std::string Ipv6ToString(const std::uint8_t ip[16]);
38 }
39