2 * Common eBPF ELF object loading operations.
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.
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.
19 typedef int (*libbpf_print_fn_t
)(const char *, ...)
20 __attribute__((format(printf
, 1, 2)));
22 void libbpf_set_print(libbpf_print_fn_t warn
,
23 libbpf_print_fn_t info
,
24 libbpf_print_fn_t debug
);
26 /* Hide internal to user */
29 struct bpf_object
*bpf_object__open(const char *path
);
30 struct bpf_object
*bpf_object__open_buffer(void *obj_buf
,
32 void bpf_object__close(struct bpf_object
*object
);
34 /* Load/unload object into/from kernel */
35 int bpf_object__load(struct bpf_object
*obj
);
36 int bpf_object__unload(struct bpf_object
*obj
);
38 struct bpf_object
*bpf_object__next(struct bpf_object
*prev
);
39 #define bpf_object__for_each_safe(pos, tmp) \
40 for ((pos) = bpf_object__next(NULL), \
41 (tmp) = bpf_object__next(pos); \
43 (pos) = (tmp), (tmp) = bpf_object__next(tmp))
45 /* Accessors of bpf_program. */
47 struct bpf_program
*bpf_program__next(struct bpf_program
*prog
,
48 struct bpf_object
*obj
);
50 #define bpf_object__for_each_program(pos, obj) \
51 for ((pos) = bpf_program__next(NULL, (obj)); \
53 (pos) = bpf_program__next((pos), (obj)))
55 typedef void (*bpf_program_clear_priv_t
)(struct bpf_program
*,
58 int bpf_program__set_private(struct bpf_program
*prog
, void *priv
,
59 bpf_program_clear_priv_t clear_priv
);
61 int bpf_program__get_private(struct bpf_program
*prog
,
64 const char *bpf_program__title(struct bpf_program
*prog
, bool dup
);
66 int bpf_program__fd(struct bpf_program
*prog
);
69 * We don't need __attribute__((packed)) now since it is
70 * unnecessary for 'bpf_map_def' because they are all aligned.
71 * In addition, using it will trigger -Wpacked warning message,
72 * and will be treated as an error due to -Werror.
76 unsigned int key_size
;
77 unsigned int value_size
;
78 unsigned int max_entries
;