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@xxxxxxxxxx>
---
tools/lib/bpf/libbpf.c | 42 ++++++++++++++++++++++++++++++++++++++++
tools/lib/bpf/libbpf.h | 9 +++++++++
tools/lib/bpf/libbpf.map | 1 +
3 files changed, 52 insertions(+)
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 6b9c0f..1cbe90 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -72,6 +72,40 @@
static struct bpf_map *bpf_object__add_map(struct bpf_object *obj);
static bool prog_is_subprog(const struct bpf_object *obj, const struct bpf_program *prog);
+static const char * const map_type_name[] = {
+ [BPF_MAP_TYPE_UNSPEC] = "unspec",
+ [BPF_MAP_TYPE_HASH] = "hash",
+ [BPF_MAP_TYPE_ARRAY] = "array",
+ [BPF_MAP_TYPE_PROG_ARRAY] = "prog_array",
+ [BPF_MAP_TYPE_PERF_EVENT_ARRAY] = "perf_event_array",
+ [BPF_MAP_TYPE_PERCPU_HASH] = "percpu_hash",
+ [BPF_MAP_TYPE_PERCPU_ARRAY] = "percpu_array",
+ [BPF_MAP_TYPE_STACK_TRACE] = "stack_trace",
+ [BPF_MAP_TYPE_CGROUP_ARRAY] = "cgroup_array",
+ [BPF_MAP_TYPE_LRU_HASH] = "lru_hash",
+ [BPF_MAP_TYPE_LRU_PERCPU_HASH] = "lru_percpu_hash",
+ [BPF_MAP_TYPE_LPM_TRIE] = "lpm_trie",
+ [BPF_MAP_TYPE_ARRAY_OF_MAPS] = "array_of_maps",
+ [BPF_MAP_TYPE_HASH_OF_MAPS] = "hash_of_maps",
+ [BPF_MAP_TYPE_DEVMAP] = "devmap",
+ [BPF_MAP_TYPE_DEVMAP_HASH] = "devmap_hash",
+ [BPF_MAP_TYPE_SOCKMAP] = "sockmap",
+ [BPF_MAP_TYPE_CPUMAP] = "cpumap",
+ [BPF_MAP_TYPE_XSKMAP] = "xskmap",
+ [BPF_MAP_TYPE_SOCKHASH] = "sockhash",
+ [BPF_MAP_TYPE_CGROUP_STORAGE] = "cgroup_storage",
+ [BPF_MAP_TYPE_REUSEPORT_SOCKARRAY] = "reuseport_sockarray",
+ [BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE] = "percpu_cgroup_storage",
+ [BPF_MAP_TYPE_QUEUE] = "queue",
+ [BPF_MAP_TYPE_STACK] = "stack",
+ [BPF_MAP_TYPE_SK_STORAGE] = "sk_storage",
+ [BPF_MAP_TYPE_STRUCT_OPS] = "struct_ops",
+ [BPF_MAP_TYPE_RINGBUF] = "ringbuf",
+ [BPF_MAP_TYPE_INODE_STORAGE] = "inode_storage",
+ [BPF_MAP_TYPE_TASK_STORAGE] = "task_storage",
+ [BPF_MAP_TYPE_BLOOM_FILTER] = "bloom_filter",
+};
+
static const char * const prog_type_name[] = {
[BPF_PROG_TYPE_UNSPEC] = "unspec",
[BPF_PROG_TYPE_SOCKET_FILTER] = "socket_filter",
@@ -9335,6 +9369,14 @@ int libbpf_prog_type_by_name(const char *name, enum bpf_prog_type *prog_type,
return libbpf_err(-ESRCH);
}
+const char *libbpf_bpf_map_type_str(enum bpf_map_type t)
+{
+ if (t < 0 || t >= ARRAY_SIZE(map_type_name))
+ return NULL;
+
+ return map_type_name[t];
+}
+
const char *libbpf_bpf_prog_type_str(enum bpf_prog_type t)
{
if (t < 0 || t >= ARRAY_SIZE(prog_type_name))
diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h
index 11b5f8c..6c5b07 100644
--- a/tools/lib/bpf/libbpf.h
+++ b/tools/lib/bpf/libbpf.h
@@ -51,6 +51,15 @@ 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.
diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map
index b12d290..16065ac 100644
--- a/tools/lib/bpf/libbpf.map
+++ b/tools/lib/bpf/libbpf.map
@@ -462,6 +462,7 @@ LIBBPF_0.8.0 {
LIBBPF_1.0.0 {
global:
+ libbpf_bpf_map_type_str;
libbpf_bpf_prog_type_str;
local: *;
--
2.30.2
