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      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     };
     32     Fwmark() : intValue(0) {}
     33 };
     34 
     35 static const unsigned FWMARK_NET_ID_MASK = 0xffff;
     36 
     37 static_assert(sizeof(Fwmark) == sizeof(uint32_t), "The entire fwmark must fit into 32 bits");
     38 
     39 #endif  // NETD_INCLUDE_FWMARK_H
     40