[PATCH RFC bpf-next v1 30/32] selftests/bpf: Add BTF tag macros for local kptrs, BPF linked lists

[Kumar Kartikeya Dwivedi <memxor@gmail.com>]

Since this is an experimental API, all of these tags are not exposed in
libbpf, but hidden in the bpf_experimental.h header in the selftests
directory. Once enough field experience has been gained with this API,
it can graduate to stable and can be baked into UAPI.s

Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
---
 tools/testing/selftests/bpf/bpf_experimental.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/testing/selftests/bpf/bpf_experimental.h b/tools/testing/selftests/bpf/bpf_experimental.h
index 60fe48df4f68..21f12c510db4 100644
--- a/tools/testing/selftests/bpf/bpf_experimental.h
+++ b/tools/testing/selftests/bpf/bpf_experimental.h
@@ -3,6 +3,10 @@
 #include <bpf/bpf_tracing.h>
 #include <bpf/bpf_helpers.h>
 
+#define __contains(kind, name, node) __attribute__((btf_decl_tag("contains:" #kind ":" #name ":" #node)))
+#define __kernel __attribute__((btf_decl_tag("kernel")))
+#define __local __attribute__((btf_type_tag("local")))
+
 #else
 
 struct bpf_list_head {
-- 
2.34.1