1 /*
2  * Copyright (c) 2024 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef NET_FIREWALL_BITMAP_H
17 #define NET_FIREWALL_BITMAP_H
18 
19 #include <linux/bpf.h>
20 
21 #include "netfirewall_types.h"
22 
bitmap_and(bitmap_ptr bitmap,bitmap_ptr val)23 static __always_inline void bitmap_and(bitmap_ptr bitmap, bitmap_ptr val)
24 {
25     for (int i = 0; i < BITMAP_LEN; i++) {
26         bitmap[i] &= val[i];
27     }
28 }
29 
bitmap_and_inv(bitmap_ptr bitmap,bitmap_ptr val)30 static __always_inline void bitmap_and_inv(bitmap_ptr bitmap, bitmap_ptr val)
31 {
32     for (int i = 0; i < BITMAP_LEN; i++) {
33         bitmap[i] &= (~val[i]);
34     }
35 }
36 
bitmap_positive(bitmap_ptr bitmap)37 static __always_inline bool bitmap_positive(bitmap_ptr bitmap)
38 {
39     for (int i = 0; i < BITMAP_LEN; i++) {
40         if (bitmap[i] > 0) {
41             return true;
42         }
43     }
44     return false;
45 }
46 
47 #endif // NET_FIREWALL_BITMAP_H