tools: sync uapi/linux/bpf.h

Pull changes from "bpf: respect size hint to BPF_PROG_TEST_RUN if present".

Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 0183b8e70a9e6dfa963713305242964bdf04219b..64262890feb23c31da6215b0c11209b058a7cd8e 100644 (file)
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -374,8 +374,11 @@ union bpf_attr {
        struct { /* anonymous struct used by BPF_PROG_TEST_RUN command */
                __u32           prog_fd;
                __u32           retval;
-               __u32           data_size_in;
-               __u32           data_size_out;
+               __u32           data_size_in;   /* input: len of data_in */
+               __u32           data_size_out;  /* input/output: len of data_out
+                                                *   returns ENOSPC if data_out
+                                                *   is too small.
+                                                */
                __aligned_u64   data_in;
                __aligned_u64   data_out;
                __u32           repeat;