bpf: Change BPF_MAX_TRAMP_LINKS to enum

This way it's possible to query its value from testcases using BTF.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Link: https://lore.kernel.org/r/20230128000650.1516334-3-iii@linux.ibm.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index f7f24defccb8e6c3b9ee6d245f55b7f0506b4184..34551e4ebc725fccf6f1a92e8fdd02b1d9fcff67 100644 (file)
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -939,7 +939,9 @@ struct btf_func_model {
 /* Each call __bpf_prog_enter + call bpf_func + call __bpf_prog_exit is ~50
  * bytes on x86.
  */
-#define BPF_MAX_TRAMP_LINKS 38
+enum {
+       BPF_MAX_TRAMP_LINKS = 38,
+};
 
 struct bpf_tramp_links {
        struct bpf_tramp_link *links[BPF_MAX_TRAMP_LINKS];