tools/libbpf: Add support for BPF_MODIFY_RETURN

Signed-off-by: KP Singh <kpsingh@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200304191853.1529-6-kpsingh@chromium.org

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index f8c4042..223be01 100644 (file)
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -6288,6 +6288,10 @@ static const struct bpf_sec_def section_defs[] = {
                .expected_attach_type = BPF_TRACE_FENTRY,
                .is_attach_btf = true,
                .attach_fn = attach_trace),
+       SEC_DEF("fmod_ret/", TRACING,
+               .expected_attach_type = BPF_MODIFY_RETURN,
+               .is_attach_btf = true,
+               .attach_fn = attach_trace),
        SEC_DEF("fexit/", TRACING,
                .expected_attach_type = BPF_TRACE_FEXIT,
                .is_attach_btf = true,