libbpf: Introduce libbpf_bpf_map_type_str

This change introduces a new function, libbpf_bpf_map_type_str, to the
public libbpf API. The function allows users to get a string
representation for a bpf_map_type enum variant.

Signed-off-by: Daniel Müller <deso@posteo.net>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Quentin Monnet <quentin@isovalent.com>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20220523230428.3077108-5-deso@posteo.net

1 files changed, 9 insertions, 0 deletions

diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h
index 11b5f8ce8031..6c5b077351c6 100644
--- a/tools/lib/bpf/libbpf.h
+++ b/tools/lib/bpf/libbpf.h
@@ -52,6 +52,15 @@ enum libbpf_errno {
 LIBBPF_API int libbpf_strerror(int err, char *buf, size_t size);
 
 /**
+ * @brief **libbpf_bpf_map_type_str()** converts the provided map type value
+ * into a textual representation.
+ * @param t The map type.
+ * @return Pointer to a static string identifying the map type. NULL is
+ * returned for unknown **bpf_map_type** values.
+ */
+LIBBPF_API const char *libbpf_bpf_map_type_str(enum bpf_map_type t);
+
+/**
  * @brief **libbpf_bpf_prog_type_str()** converts the provided program type
  * value into a textual representation.
  * @param t The program type.