bpftool: Support BTF_KIND_TYPE_TAG

Add bpftool support for BTF_KIND_TYPE_TAG.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211112012620.1505506-1-yhs@fb.com

diff --git a/tools/bpf/bpftool/btf.c b/tools/bpf/bpftool/btf.c
index 223ac76..c7e3b0b 100644 (file)
--- a/tools/bpf/bpftool/btf.c
+++ b/tools/bpf/bpftool/btf.c
@@ -39,6 +39,7 @@ static const char * const btf_kind_str[NR_BTF_KINDS] = {
        [BTF_KIND_DATASEC]      = "DATASEC",
        [BTF_KIND_FLOAT]        = "FLOAT",
        [BTF_KIND_DECL_TAG]     = "DECL_TAG",
+       [BTF_KIND_TYPE_TAG]     = "TYPE_TAG",
 };
 
 struct btf_attach_point {
@@ -142,6 +143,7 @@ static int dump_btf_type(const struct btf *btf, __u32 id,
        case BTF_KIND_VOLATILE:
        case BTF_KIND_RESTRICT:
        case BTF_KIND_TYPEDEF:
+       case BTF_KIND_TYPE_TAG:
                if (json_output)
                        jsonw_uint_field(w, "type_id", t->type);
                else