Commit | Line | Data |
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1b76c13e WN |
1 | /* |
2 | * Common eBPF ELF object loading operations. | |
3 | * | |
4 | * Copyright (C) 2013-2015 Alexei Starovoitov <ast@kernel.org> | |
5 | * Copyright (C) 2015 Wang Nan <wangnan0@huawei.com> | |
6 | * Copyright (C) 2015 Huawei Inc. | |
7 | */ | |
8 | #ifndef __BPF_LIBBPF_H | |
9 | #define __BPF_LIBBPF_H | |
10 | ||
1a5e3fb1 | 11 | #include <stdio.h> |
aa9b1ac3 | 12 | #include <stdbool.h> |
1a5e3fb1 | 13 | |
b3f59d66 WN |
14 | /* |
15 | * In include/linux/compiler-gcc.h, __printf is defined. However | |
16 | * it should be better if libbpf.h doesn't depend on Linux header file. | |
17 | * So instead of __printf, here we use gcc attribute directly. | |
18 | */ | |
19 | typedef int (*libbpf_print_fn_t)(const char *, ...) | |
20 | __attribute__((format(printf, 1, 2))); | |
21 | ||
22 | void libbpf_set_print(libbpf_print_fn_t warn, | |
23 | libbpf_print_fn_t info, | |
24 | libbpf_print_fn_t debug); | |
25 | ||
1a5e3fb1 WN |
26 | /* Hide internal to user */ |
27 | struct bpf_object; | |
28 | ||
29 | struct bpf_object *bpf_object__open(const char *path); | |
6c956392 | 30 | struct bpf_object *bpf_object__open_buffer(void *obj_buf, |
acf860ae WN |
31 | size_t obj_buf_sz, |
32 | const char *name); | |
1a5e3fb1 WN |
33 | void bpf_object__close(struct bpf_object *object); |
34 | ||
52d3352e WN |
35 | /* Load/unload object into/from kernel */ |
36 | int bpf_object__load(struct bpf_object *obj); | |
37 | int bpf_object__unload(struct bpf_object *obj); | |
acf860ae | 38 | const char *bpf_object__get_name(struct bpf_object *obj); |
52d3352e | 39 | |
9a208eff WN |
40 | struct bpf_object *bpf_object__next(struct bpf_object *prev); |
41 | #define bpf_object__for_each_safe(pos, tmp) \ | |
42 | for ((pos) = bpf_object__next(NULL), \ | |
43 | (tmp) = bpf_object__next(pos); \ | |
44 | (pos) != NULL; \ | |
45 | (pos) = (tmp), (tmp) = bpf_object__next(tmp)) | |
46 | ||
aa9b1ac3 WN |
47 | /* Accessors of bpf_program. */ |
48 | struct bpf_program; | |
49 | struct bpf_program *bpf_program__next(struct bpf_program *prog, | |
50 | struct bpf_object *obj); | |
51 | ||
52 | #define bpf_object__for_each_program(pos, obj) \ | |
53 | for ((pos) = bpf_program__next(NULL, (obj)); \ | |
54 | (pos) != NULL; \ | |
55 | (pos) = bpf_program__next((pos), (obj))) | |
56 | ||
57 | typedef void (*bpf_program_clear_priv_t)(struct bpf_program *, | |
58 | void *); | |
59 | ||
60 | int bpf_program__set_private(struct bpf_program *prog, void *priv, | |
61 | bpf_program_clear_priv_t clear_priv); | |
62 | ||
63 | int bpf_program__get_private(struct bpf_program *prog, | |
64 | void **ppriv); | |
65 | ||
66 | const char *bpf_program__title(struct bpf_program *prog, bool dup); | |
67 | ||
68 | int bpf_program__fd(struct bpf_program *prog); | |
69 | ||
34090915 WN |
70 | /* |
71 | * We don't need __attribute__((packed)) now since it is | |
72 | * unnecessary for 'bpf_map_def' because they are all aligned. | |
73 | * In addition, using it will trigger -Wpacked warning message, | |
74 | * and will be treated as an error due to -Werror. | |
75 | */ | |
76 | struct bpf_map_def { | |
77 | unsigned int type; | |
78 | unsigned int key_size; | |
79 | unsigned int value_size; | |
80 | unsigned int max_entries; | |
81 | }; | |
82 | ||
1b76c13e | 83 | #endif |