Commit dbdd2c7f authored by Andrii Nakryiko's avatar Andrii Nakryiko Committed by Alexei Starovoitov
Browse files

libbpf: Add API to get/set log_level at per-program level 



Add bpf_program__set_log_level() and bpf_program__log_level() to fetch
and adjust log_level sent during BPF_PROG_LOAD command. This allows to
selectively request more or less verbose output in BPF verifier log.

Also bump libbpf version to 0.7 and make these APIs the first in v0.7.

Signed-off-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211201232824.3166325-3-andrii@kernel.org
parent 74d98070

tools/lib/bpf/libbpf.c

+14 −0
Original line number Diff line number Diff line
@@ -8475,6 +8475,20 @@ int bpf_program__set_flags(struct bpf_program *prog, __u32 flags) 
	return 0;

}



__u32 bpf_program__log_level(const struct bpf_program *prog)

{

	return prog->log_level;

}



int bpf_program__set_log_level(struct bpf_program *prog, __u32 log_level)

{

	if (prog->obj->loaded)

		return libbpf_err(-EBUSY);



	prog->log_level = log_level;

	return 0;

}



#define SEC_DEF(sec_pfx, ptype, atype, flags, ...) {			    \

	.sec = sec_pfx,							    \

	.prog_type = BPF_PROG_TYPE_##ptype,				    \

tools/lib/bpf/libbpf.h

+2 −0
Original line number Diff line number Diff line
@@ -499,6 +499,8 @@ bpf_program__set_expected_attach_type(struct bpf_program *prog, 


LIBBPF_API __u32 bpf_program__flags(const struct bpf_program *prog);

LIBBPF_API int bpf_program__set_flags(struct bpf_program *prog, __u32 flags);

LIBBPF_API __u32 bpf_program__log_level(const struct bpf_program *prog);

LIBBPF_API int bpf_program__set_log_level(struct bpf_program *prog, __u32 log_level);



LIBBPF_API int

bpf_program__set_attach_target(struct bpf_program *prog, int attach_prog_fd,

tools/lib/bpf/libbpf.map

+6 −0
Original line number Diff line number Diff line
@@ -419,3 +419,9 @@ LIBBPF_0.6.0 { 
		perf_buffer__new_raw;

		perf_buffer__new_raw_deprecated;

} LIBBPF_0.5.0;



LIBBPF_0.7.0 {

	global:

		bpf_program__log_level;

		bpf_program__set_log_level;

};

tools/lib/bpf/libbpf_version.h

+1 −1
Original line number Diff line number Diff line
@@ -4,6 +4,6 @@ 
#define __LIBBPF_VERSION_H



#define LIBBPF_MAJOR_VERSION 0

#define LIBBPF_MINOR_VERSION 6

#define LIBBPF_MINOR_VERSION 7



#endif /* __LIBBPF_VERSION_H */