Commit a80eba20 authored by Yonghong Song's avatar Yonghong Song Committed by Daniel Borkmann
Browse files

tools/bpf: add int128 raw test in test_btf 



Several int128 raw type tests are added to test_btf.
Currently these tests are enabled only for x64 and arm64
for which kernel has CONFIG_ARCH_SUPPORTS_INT128 set.

  $ test_btf
  ......
  BTF raw test[106] (128-bit int): OK
  BTF raw test[107] (struct, 128-bit int member): OK
  BTF raw test[108] (struct, 120-bit int member bitfield): OK
  BTF raw test[109] (struct, kind_flag, 128-bit int member): OK
  BTF raw test[110] (struct, kind_flag, 120-bit int member bitfield): OK
  ......

Acked-by: default avatarMartin KaFai Lau <kafai@fb.com>
Signed-off-by: default avatarYonghong Song <yhs@fb.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
parent b1e8818c

tools/testing/selftests/bpf/test_btf.c

+93 −0
Original line number Diff line number Diff line
@@ -2707,6 +2707,99 @@ static struct btf_raw_test raw_tests[] = { 
	.err_str = "Invalid member offset",

},



{

	.descr = "128-bit int",

	.raw_types = {

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

		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 128, 16),		/* [2] */

		BTF_END_RAW,

	},

	BTF_STR_SEC("\0A"),

	.map_type = BPF_MAP_TYPE_ARRAY,

	.map_name = "int_type_check_btf",

	.key_size = sizeof(int),

	.value_size = sizeof(int),

	.key_type_id = 1,

	.value_type_id = 1,

	.max_entries = 4,

},



{

	.descr = "struct, 128-bit int member",

	.raw_types = {

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

		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 128, 16),		/* [2] */

		BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), 16),	/* [3] */

		BTF_MEMBER_ENC(NAME_TBD, 2, 0),

		BTF_END_RAW,

	},

	BTF_STR_SEC("\0A"),

	.map_type = BPF_MAP_TYPE_ARRAY,

	.map_name = "struct_type_check_btf",

	.key_size = sizeof(int),

	.value_size = sizeof(int),

	.key_type_id = 1,

	.value_type_id = 1,

	.max_entries = 4,

},



{

	.descr = "struct, 120-bit int member bitfield",

	.raw_types = {

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

		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 120, 16),		/* [2] */

		BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), 16),	/* [3] */

		BTF_MEMBER_ENC(NAME_TBD, 2, 0),

		BTF_END_RAW,

	},

	BTF_STR_SEC("\0A"),

	.map_type = BPF_MAP_TYPE_ARRAY,

	.map_name = "struct_type_check_btf",

	.key_size = sizeof(int),

	.value_size = sizeof(int),

	.key_type_id = 1,

	.value_type_id = 1,

	.max_entries = 4,

},



{

	.descr = "struct, kind_flag, 128-bit int member",

	.raw_types = {

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

		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 128, 16),		/* [2] */

		BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 1), 16),	/* [3] */

		BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(0, 0)),

		BTF_END_RAW,

	},

	BTF_STR_SEC("\0A"),

	.map_type = BPF_MAP_TYPE_ARRAY,

	.map_name = "struct_type_check_btf",

	.key_size = sizeof(int),

	.value_size = sizeof(int),

	.key_type_id = 1,

	.value_type_id = 1,

	.max_entries = 4,

},



{

	.descr = "struct, kind_flag, 120-bit int member bitfield",

	.raw_types = {

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

		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 128, 16),		/* [2] */

		BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 1), 16),	/* [3] */

		BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(120, 0)),

		BTF_END_RAW,

	},

	BTF_STR_SEC("\0A"),

	.map_type = BPF_MAP_TYPE_ARRAY,

	.map_name = "struct_type_check_btf",

	.key_size = sizeof(int),

	.value_size = sizeof(int),

	.key_type_id = 1,

	.value_type_id = 1,

	.max_entries = 4,

},



}; /* struct btf_raw_test raw_tests[] */



static const char *get_next_str(const char *start, const char *end)

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