Commit e38096d9 authored by Yonghong Song's avatar Yonghong Song Committed by Martin KaFai Lau
Browse files

selftests/bpf: Add a test where map key_type_id with decl_tag type 



Add two selftests where map creation key/value type_id's are
decl_tags. Without previous patch, kernel warnings will
appear similar to the one in the previous patch. With the previous
patch, both kernel warnings are silenced.

Signed-off-by: default avatarYonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/r/20230530205034.266643-1-yhs@fb.com


Signed-off-by: default avatarMartin KaFai Lau <martin.lau@kernel.org>
parent e6c2f594

tools/testing/selftests/bpf/prog_tests/btf.c

+40 −0
Original line number Diff line number Diff line
@@ -3990,6 +3990,46 @@ static struct btf_raw_test raw_tests[] = { 
	.btf_load_err = true,

	.err_str = "Invalid arg#1",

},

{

	.descr = "decl_tag test #18, decl_tag as the map key type",

	.raw_types = {

		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */

		BTF_STRUCT_ENC(0, 2, 8),			/* [2] */

		BTF_MEMBER_ENC(NAME_TBD, 1, 0),

		BTF_MEMBER_ENC(NAME_TBD, 1, 32),

		BTF_DECL_TAG_ENC(NAME_TBD, 2, -1),		/* [3] */

		BTF_END_RAW,

	},

	BTF_STR_SEC("\0m1\0m2\0tag"),

	.map_type = BPF_MAP_TYPE_HASH,

	.map_name = "tag_type_check_btf",

	.key_size = 8,

	.value_size = 4,

	.key_type_id = 3,

	.value_type_id = 1,

	.max_entries = 1,

	.map_create_err = true,

},

{

	.descr = "decl_tag test #19, decl_tag as the map value type",

	.raw_types = {

		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */

		BTF_STRUCT_ENC(0, 2, 8),			/* [2] */

		BTF_MEMBER_ENC(NAME_TBD, 1, 0),

		BTF_MEMBER_ENC(NAME_TBD, 1, 32),

		BTF_DECL_TAG_ENC(NAME_TBD, 2, -1),		/* [3] */

		BTF_END_RAW,

	},

	BTF_STR_SEC("\0m1\0m2\0tag"),

	.map_type = BPF_MAP_TYPE_HASH,

	.map_name = "tag_type_check_btf",

	.key_size = 4,

	.value_size = 8,

	.key_type_id = 1,

	.value_type_id = 3,

	.max_entries = 1,

	.map_create_err = true,

},

{

	.descr = "type_tag test #1",

	.raw_types = {