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The following three files are added:
  libbpf_probes.c
  libbpf_util.h
  libbpf.map

Signed-off-by: Yonghong Song <yhs@fb.com>
This commit is contained in:
Yonghong Song
2019-02-04 13:28:44 -08:00
parent d5b146fec5
commit 1dc0296fce
11 changed files with 798 additions and 177 deletions
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38
src/libbpf.h
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@@ -47,17 +47,17 @@ enum libbpf_errno {
LIBBPF_API int libbpf_strerror(int err, char *buf, size_t size);
/*
* __printf is defined in include/linux/compiler-gcc.h. However,
* it would be better if libbpf.h didn't depend on Linux header files.
* So instead of __printf, here we use gcc attribute directly.
*/
typedef int (*libbpf_print_fn_t)(const char *, ...)
__attribute__((format(printf, 1, 2)));
enum libbpf_print_level {
LIBBPF_WARN,
LIBBPF_INFO,
LIBBPF_DEBUG,
};
LIBBPF_API void libbpf_set_print(libbpf_print_fn_t warn,
libbpf_print_fn_t info,
libbpf_print_fn_t debug);
typedef int (*libbpf_print_fn_t)(enum libbpf_print_level level,
const char *, ...)
__attribute__((format(printf, 2, 3)));
LIBBPF_API void libbpf_set_print(libbpf_print_fn_t fn);
/* Hide internal to user */
struct bpf_object;
@@ -264,6 +264,9 @@ struct bpf_map;
LIBBPF_API struct bpf_map *
bpf_object__find_map_by_name(struct bpf_object *obj, const char *name);
LIBBPF_API int
bpf_object__find_map_fd_by_name(struct bpf_object *obj, const char *name);
/*
* Get bpf_map through the offset of corresponding struct bpf_map_def
* in the BPF object file.
@@ -314,6 +317,7 @@ LIBBPF_API int bpf_prog_load(const char *file, enum bpf_prog_type type,
struct bpf_object **pobj, int *prog_fd);
LIBBPF_API int bpf_set_link_xdp_fd(int ifindex, int fd, __u32 flags);
LIBBPF_API int bpf_get_link_xdp_id(int ifindex, __u32 *prog_id, __u32 flags);
enum bpf_perf_event_ret {
LIBBPF_PERF_EVENT_DONE = 0,
@@ -355,6 +359,20 @@ LIBBPF_API const struct bpf_line_info *
bpf_prog_linfo__lfind(const struct bpf_prog_linfo *prog_linfo,
__u32 insn_off, __u32 nr_skip);
/*
* Probe for supported system features
*
* Note that running many of these probes in a short amount of time can cause
* the kernel to reach the maximal size of lockable memory allowed for the
* user, causing subsequent probes to fail. In this case, the caller may want
* to adjust that limit with setrlimit().
*/
LIBBPF_API bool bpf_probe_prog_type(enum bpf_prog_type prog_type,
__u32 ifindex);
LIBBPF_API bool bpf_probe_map_type(enum bpf_map_type map_type, __u32 ifindex);
LIBBPF_API bool bpf_probe_helper(enum bpf_func_id id,
enum bpf_prog_type prog_type, __u32 ifindex);
#ifdef __cplusplus
} /* extern "C" */
#endif