1 /*
2  * Copyright (C) 2014 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 #ifndef NETD_INCLUDE_FWMARK_H
18 #define NETD_INCLUDE_FWMARK_H
19 
20 #include "Permission.h"
21 
22 #include <stdint.h>
23 
24 union Fwmark {
25     uint32_t intValue;
26     struct {
27         unsigned netId          : 16;
28         bool explicitlySelected :  1;
29         bool protectedFromVpn   :  1;
30         Permission permission   :  2;
31         bool uidBillingDone     :  1;
32     };
Fwmark()33     constexpr Fwmark() : intValue(0) {}
34 
getUidBillingMask()35     static inline uint32_t getUidBillingMask() {
36         Fwmark m;
37         m.uidBillingDone = true;
38         return m.intValue;
39     }
40 };
41 
42 static const unsigned FWMARK_NET_ID_MASK = 0xffff;
43 
44 static_assert(sizeof(Fwmark) == sizeof(uint32_t), "The entire fwmark must fit into 32 bits");
45 
46 #endif  // NETD_INCLUDE_FWMARK_H
47