1
2#ifndef _LINUX_INDIRECT_CALL_WRAPPER_H
3#define _LINUX_INDIRECT_CALL_WRAPPER_H
4
5#ifdef CONFIG_RETPOLINE
6
7
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9
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12
13
14
15
16
17#define INDIRECT_CALL_1(f, f1, ...) \
18 ({ \
19 likely(f == f1) ? f1(__VA_ARGS__) : f(__VA_ARGS__); \
20 })
21#define INDIRECT_CALL_2(f, f2, f1, ...) \
22 ({ \
23 likely(f == f2) ? f2(__VA_ARGS__) : \
24 INDIRECT_CALL_1(f, f1, __VA_ARGS__); \
25 })
26#define INDIRECT_CALL_3(f, f3, f2, f1, ...) \
27 ({ \
28 likely(f == f3) ? f3(__VA_ARGS__) : \
29 INDIRECT_CALL_2(f, f2, f1, __VA_ARGS__); \
30 })
31#define INDIRECT_CALL_4(f, f4, f3, f2, f1, ...) \
32 ({ \
33 likely(f == f4) ? f4(__VA_ARGS__) : \
34 INDIRECT_CALL_3(f, f3, f2, f1, __VA_ARGS__); \
35 })
36
37#define INDIRECT_CALLABLE_DECLARE(f) f
38#define INDIRECT_CALLABLE_SCOPE
39#define EXPORT_INDIRECT_CALLABLE(f) EXPORT_SYMBOL(f)
40
41#else
42#define INDIRECT_CALL_1(f, f1, ...) f(__VA_ARGS__)
43#define INDIRECT_CALL_2(f, f2, f1, ...) f(__VA_ARGS__)
44#define INDIRECT_CALL_3(f, f3, f2, f1, ...) f(__VA_ARGS__)
45#define INDIRECT_CALL_4(f, f4, f3, f2, f1, ...) f(__VA_ARGS__)
46#define INDIRECT_CALLABLE_DECLARE(f)
47#define INDIRECT_CALLABLE_SCOPE static
48#define EXPORT_INDIRECT_CALLABLE(f)
49#endif
50
51
52
53
54
55
56#if IS_BUILTIN(CONFIG_IPV6)
57#define INDIRECT_CALL_INET(f, f2, f1, ...) \
58 INDIRECT_CALL_2(f, f2, f1, __VA_ARGS__)
59#elif IS_ENABLED(CONFIG_INET)
60#define INDIRECT_CALL_INET(f, f2, f1, ...) INDIRECT_CALL_1(f, f1, __VA_ARGS__)
61#else
62#define INDIRECT_CALL_INET(f, f2, f1, ...) f(__VA_ARGS__)
63#endif
64
65#if IS_ENABLED(CONFIG_INET)
66#define INDIRECT_CALL_INET_1(f, f1, ...) INDIRECT_CALL_1(f, f1, __VA_ARGS__)
67#else
68#define INDIRECT_CALL_INET_1(f, f1, ...) f(__VA_ARGS__)
69#endif
70
71#endif
72