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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: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Yonghong Song 2019-01-15 17:07:48 -08:00 committed by Daniel Borkmann
parent b1e8818cab
commit a80eba20ed
1 changed files with 93 additions and 0 deletions
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93
tools/testing/selftests/bpf/test_btf.c
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@ -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)