Commit ba5d1b58 authored by Daniel Müller's avatar Daniel Müller Committed by Andrii Nakryiko
Browse files

libbpf: Introduce libbpf_bpf_link_type_str 



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

Signed-off-by: default avatarDaniel Müller <deso@posteo.net>
Signed-off-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Acked-by: default avatarQuentin Monnet <quentin@isovalent.com>
Acked-by: default avatarYonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20220523230428.3077108-11-deso@posteo.net
parent 1ba5ad36

tools/lib/bpf/libbpf.c

+21 −0
Original line number Diff line number Diff line
@@ -118,6 +118,19 @@ static const char * const attach_type_name[] = { 
	[BPF_TRACE_KPROBE_MULTI]	= "trace_kprobe_multi",

};



static const char * const link_type_name[] = {

	[BPF_LINK_TYPE_UNSPEC]			= "unspec",

	[BPF_LINK_TYPE_RAW_TRACEPOINT]		= "raw_tracepoint",

	[BPF_LINK_TYPE_TRACING]			= "tracing",

	[BPF_LINK_TYPE_CGROUP]			= "cgroup",

	[BPF_LINK_TYPE_ITER]			= "iter",

	[BPF_LINK_TYPE_NETNS]			= "netns",

	[BPF_LINK_TYPE_XDP]			= "xdp",

	[BPF_LINK_TYPE_PERF_EVENT]		= "perf_event",

	[BPF_LINK_TYPE_KPROBE_MULTI]		= "kprobe_multi",

	[BPF_LINK_TYPE_STRUCT_OPS]		= "struct_ops",

};



static const char * const map_type_name[] = {

	[BPF_MAP_TYPE_UNSPEC]			= "unspec",

	[BPF_MAP_TYPE_HASH]			= "hash",
@@ -9423,6 +9436,14 @@ const char *libbpf_bpf_attach_type_str(enum bpf_attach_type t) 
	return attach_type_name[t];

}



const char *libbpf_bpf_link_type_str(enum bpf_link_type t)

{

	if (t < 0 || t >= ARRAY_SIZE(link_type_name))

		return NULL;



	return link_type_name[t];

}



const char *libbpf_bpf_map_type_str(enum bpf_map_type t)

{

	if (t < 0 || t >= ARRAY_SIZE(map_type_name))

tools/lib/bpf/libbpf.h

+9 −0
Original line number Diff line number Diff line
@@ -60,6 +60,15 @@ LIBBPF_API int libbpf_strerror(int err, char *buf, size_t size); 
 */

LIBBPF_API const char *libbpf_bpf_attach_type_str(enum bpf_attach_type t);



/**

 * @brief **libbpf_bpf_link_type_str()** converts the provided link type value

 * into a textual representation.

 * @param t The link type.

 * @return Pointer to a static string identifying the link type. NULL is

 * returned for unknown **bpf_link_type** values.

 */

LIBBPF_API const char *libbpf_bpf_link_type_str(enum bpf_link_type t);



/**

 * @brief **libbpf_bpf_map_type_str()** converts the provided map type value

 * into a textual representation.

tools/lib/bpf/libbpf.map

+1 −0
Original line number Diff line number Diff line
@@ -463,6 +463,7 @@ LIBBPF_0.8.0 { 
LIBBPF_1.0.0 {

	global:

		libbpf_bpf_attach_type_str;

		libbpf_bpf_link_type_str;

		libbpf_bpf_map_type_str;

		libbpf_bpf_prog_type_str;