Commit 4e15507f authored Jun 20, 2020 by Andrii Nakryiko Committed by Daniel Borkmann Jun 22, 2020

libbpf: Forward-declare bpf_stats_type for systems with outdated UAPI headers



Systems that doesn't yet have the very latest linux/bpf.h header, enum
bpf_stats_type will be undefined, causing compilation warnings. Prevents this
by forward-declaring enum.

Fixes: 0bee1067 ("libbpf: Add support for command BPF_ENABLE_STATS")
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200621031159.2279101-1-andriin@fb.com

parent b0c34bde

tools/lib/bpf/bpf.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -233,6 +233,8 @@ LIBBPF_API int bpf_load_btf(void btf, __u32 btf_size, char log_buf,
		LIBBPF_API int bpf_task_fd_query(int pid, int fd, __u32 flags, char *buf,
		__u32 buf_len, __u32 prog_id, __u32 *fd_type,
		__u64 probe_offset, __u64 probe_addr);

		enum bpf_stats_type; /* defined in up-to-date linux/bpf.h */
		LIBBPF_API int bpf_enable_stats(enum bpf_stats_type type);

		#ifdef __cplusplus

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