1 /*
2  * Copyright 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 "cache.h"
20 #include "frame.h"
21 #include "local_connection.h"
22 #include "macaddress.h"
23 #include "pollable.h"
24 #include "remote_connection.h"
25 #include "result.h"
26 
27 #include <unordered_map>
28 
29 class WifiForwarder : public Pollable {
30 public:
31     WifiForwarder();
32     virtual ~WifiForwarder() = default;
33     Result init();
34 
35     // Pollable interface
36     void getPollData(std::vector<pollfd>* fds) const override;
37     Timestamp getTimeout() const override;
38     bool onReadAvailable(int fd, int* status) override;
39     bool onClose(int fd, int* status) override;
40     bool onTimeout(Timestamp now, int* status) override;
41 private:
42     enum class RadioType {
43         Unknown,
44         Local,
45         Remote
46     };
47 
48     const char* radioTypeToStr(RadioType type) const;
49 
50     void onAck(FrameInfo& info, bool success);
51 
52     void forwardFrame(std::unique_ptr<Frame> frame, RadioType sourceType);
53 
54     std::unordered_map<MacAddress, RadioType> mRadios;
55     Cache<MacAddress, MacAddress> mAliases;
56     LocalConnection mLocalConnection;
57     RemoteConnection mRemoteConnection;
58     Pollable::Timestamp mInitDeadline = Pollable::Timestamp::max();
59     Pollable::Timestamp mDeadline = Pollable::Timestamp::max();
60 };
61 
62