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bpf: btf: Add tests for the btf uapi changes

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This patch does the followings:
1. Modify libbpf and test_btf to reflect the uapi changes in btf
2. Add test for the btf_header changes
3. Add tests for array->index_type
4. Add err_str check to the tests
5. Fix a 4 bytes hole in "struct test #1" by swapping "m" and "n"

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Martin KaFai Lau 2018-05-22 15:04:24 -07:00 committed by Daniel Borkmann
parent f03b15d34b
commit 61746dbe1a
6 changed files with 456 additions and 116 deletions
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4
tools/lib/bpf/bpf.c
View File

@ -89,8 +89,8 @@ int bpf_create_map_xattr(const struct bpf_create_map_attr *create_attr)
min(name_len, BPF_OBJ_NAME_LEN - 1));
attr.numa_node = create_attr->numa_node;
attr.btf_fd = create_attr->btf_fd;
attr.btf_key_id = create_attr->btf_key_id;
attr.btf_value_id = create_attr->btf_value_id;
attr.btf_key_type_id = create_attr->btf_key_type_id;
attr.btf_value_type_id = create_attr->btf_value_type_id;
attr.map_ifindex = create_attr->map_ifindex;
return sys_bpf(BPF_MAP_CREATE, &attr, sizeof(attr));

4
tools/lib/bpf/bpf.h
View File

@ -36,8 +36,8 @@ struct bpf_create_map_attr {
__u32 max_entries;
__u32 numa_node;
__u32 btf_fd;
__u32 btf_key_id;
__u32 btf_value_id;
__u32 btf_key_type_id;
__u32 btf_value_type_id;
__u32 map_ifindex;
};

5
tools/lib/bpf/btf.c
View File

@ -35,9 +35,8 @@ struct btf {
static const char *btf_name_by_offset(const struct btf *btf, uint32_t offset)
{
if (!BTF_STR_TBL_ELF_ID(offset) &&
BTF_STR_OFFSET(offset) < btf->hdr->str_len)
return &btf->strings[BTF_STR_OFFSET(offset)];
if (offset < btf->hdr->str_len)
return &btf->strings[offset];
else
return NULL;
}

34
tools/lib/bpf/libbpf.c
View File

@ -216,8 +216,8 @@ struct bpf_map {
size_t offset;
int map_ifindex;
struct bpf_map_def def;
uint32_t btf_key_id;
uint32_t btf_value_id;
uint32_t btf_key_type_id;
uint32_t btf_value_type_id;
void *priv;
bpf_map_clear_priv_t clear_priv;
};
@ -1074,8 +1074,8 @@ static int bpf_map_find_btf_info(struct bpf_map *map, const struct btf *btf)
return -EINVAL;
}
map->btf_key_id = key_id;
map->btf_value_id = value_id;
map->btf_key_type_id = key_id;
map->btf_value_type_id = value_id;
return 0;
}
@ -1100,24 +1100,24 @@ bpf_object__create_maps(struct bpf_object *obj)
create_attr.value_size = def->value_size;
create_attr.max_entries = def->max_entries;
create_attr.btf_fd = 0;
create_attr.btf_key_id = 0;
create_attr.btf_value_id = 0;
create_attr.btf_key_type_id = 0;
create_attr.btf_value_type_id = 0;
if (obj->btf && !bpf_map_find_btf_info(map, obj->btf)) {
create_attr.btf_fd = btf__fd(obj->btf);
create_attr.btf_key_id = map->btf_key_id;
create_attr.btf_value_id = map->btf_value_id;
create_attr.btf_key_type_id = map->btf_key_type_id;
create_attr.btf_value_type_id = map->btf_value_type_id;
}
*pfd = bpf_create_map_xattr(&create_attr);
if (*pfd < 0 && create_attr.btf_key_id) {
if (*pfd < 0 && create_attr.btf_key_type_id) {
pr_warning("Error in bpf_create_map_xattr(%s):%s(%d). Retrying without BTF.\n",
map->name, strerror(errno), errno);
create_attr.btf_fd = 0;
create_attr.btf_key_id = 0;
create_attr.btf_value_id = 0;
map->btf_key_id = 0;
map->btf_value_id = 0;
create_attr.btf_key_type_id = 0;
create_attr.btf_value_type_id = 0;
map->btf_key_type_id = 0;
map->btf_value_type_id = 0;
*pfd = bpf_create_map_xattr(&create_attr);
}
@ -2085,14 +2085,14 @@ const char *bpf_map__name(struct bpf_map *map)
return map ? map->name : NULL;
}
uint32_t bpf_map__btf_key_id(const struct bpf_map *map)
uint32_t bpf_map__btf_key_type_id(const struct bpf_map *map)
{
return map ? map->btf_key_id : 0;
return map ? map->btf_key_type_id : 0;
}
uint32_t bpf_map__btf_value_id(const struct bpf_map *map)
uint32_t bpf_map__btf_value_type_id(const struct bpf_map *map)
{
return map ? map->btf_value_id : 0;
return map ? map->btf_value_type_id : 0;
}
int bpf_map__set_priv(struct bpf_map *map, void *priv,

4
tools/lib/bpf/libbpf.h
View File

@ -244,8 +244,8 @@ bpf_map__next(struct bpf_map *map, struct bpf_object *obj);
int bpf_map__fd(struct bpf_map *map);
const struct bpf_map_def *bpf_map__def(struct bpf_map *map);
const char *bpf_map__name(struct bpf_map *map);
uint32_t bpf_map__btf_key_id(const struct bpf_map *map);
uint32_t bpf_map__btf_value_id(const struct bpf_map *map);
uint32_t bpf_map__btf_key_type_id(const struct bpf_map *map);
uint32_t bpf_map__btf_value_type_id(const struct bpf_map *map);
typedef void (*bpf_map_clear_priv_t)(struct bpf_map *, void *);
int bpf_map__set_priv(struct bpf_map *map, void *priv,

521
tools/testing/selftests/bpf/test_btf.c
View File

@ -113,22 +113,25 @@ static char btf_log_buf[BTF_LOG_BUF_SIZE];
static struct btf_header hdr_tmpl = {
.magic = BTF_MAGIC,
.version = BTF_VERSION,
.hdr_len = sizeof(struct btf_header),
};
struct btf_raw_test {
const char *descr;
const char *str_sec;
const char *map_name;
const char *err_str;
__u32 raw_types[MAX_NR_RAW_TYPES];
__u32 str_sec_size;
enum bpf_map_type map_type;
__u32 key_size;
__u32 value_size;
__u32 key_id;
__u32 value_id;
__u32 key_type_id;
__u32 value_type_id;
__u32 max_entries;
bool btf_load_err;
bool map_create_err;
int hdr_len_delta;
int type_off_delta;
int str_off_delta;
int str_len_delta;
@ -141,8 +144,8 @@ static struct btf_raw_test raw_tests[] = {
* };
*
* struct A {
* int m;
* unsigned long long n;
* unsigned long long m;
* int n;
* char o;
* [3 bytes hole]
* int p[8];
@ -163,8 +166,8 @@ static struct btf_raw_test raw_tests[] = {
BTF_TYPE_ARRAY_ENC(1, 1, 8), /* [4] */
/* struct A { */ /* [5] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 6), 180),
BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int m; */
BTF_MEMBER_ENC(NAME_TBD, 2, 32),/* unsigned long long n;*/
BTF_MEMBER_ENC(NAME_TBD, 2, 0), /* unsigned long long m;*/
BTF_MEMBER_ENC(NAME_TBD, 1, 64),/* int n; */
BTF_MEMBER_ENC(NAME_TBD, 3, 96),/* char o; */
BTF_MEMBER_ENC(NAME_TBD, 4, 128),/* int p[8] */
BTF_MEMBER_ENC(NAME_TBD, 6, 384),/* int q[4][8] */
@ -172,6 +175,7 @@ static struct btf_raw_test raw_tests[] = {
/* } */
/* int[4][8] */
BTF_TYPE_ARRAY_ENC(4, 1, 4), /* [6] */
/* enum E */ /* [7] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 2), sizeof(int)),
BTF_ENUM_ENC(NAME_TBD, 0),
BTF_ENUM_ENC(NAME_TBD, 1),
@ -183,8 +187,8 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "struct_test1_map",
.key_size = sizeof(int),
.value_size = 180,
.key_id = 1,
.value_id = 5,
.key_type_id = 1,
.value_type_id = 5,
.max_entries = 4,
},
@ -238,8 +242,8 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "struct_test2_map",
.key_size = sizeof(int),
.value_size = 68,
.key_id = 1,
.value_id = 3,
.key_type_id = 1,
.value_type_id = 3,
.max_entries = 4,
},
@ -258,7 +262,7 @@ static struct btf_raw_test raw_tests[] = {
/* struct A { */ /* [2] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), sizeof(int) * 2 - 1),
BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int m; */
BTF_MEMBER_ENC(NAME_TBD, 2, 32),/* int n; */
BTF_MEMBER_ENC(NAME_TBD, 1, 32),/* int n; */
/* } */
BTF_END_RAW,
},
@ -268,10 +272,11 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "size_check1_map",
.key_size = sizeof(int),
.value_size = 1,
.key_id = 1,
.value_id = 2,
.key_type_id = 1,
.value_type_id = 2,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Member exceeds struct_size",
},
/* Test member exeeds the size of struct
@ -301,11 +306,11 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "size_check2_map",
.key_size = sizeof(int),
.value_size = 1,
.key_id = 1,
.value_id = 3,
.key_type_id = 1,
.value_type_id = 3,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Member exceeds struct_size",
},
/* Test member exeeds the size of struct
@ -335,10 +340,11 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "size_check3_map",
.key_size = sizeof(int),
.value_size = 1,
.key_id = 1,
.value_id = 3,
.key_type_id = 1,
.value_type_id = 3,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Member exceeds struct_size",
},
/* Test member exceeds the size of struct
@ -376,10 +382,11 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "size_check4_map",
.key_size = sizeof(int),
.value_size = 1,
.key_id = 1,
.value_id = 3,
.key_type_id = 1,
.value_type_id = 3,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Member exceeds struct_size",
},
/* typedef const void * const_void_ptr;
@ -411,8 +418,8 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "void_test1_map",
.key_size = sizeof(int),
.value_size = sizeof(void *),
.key_id = 1,
.value_id = 4,
.key_type_id = 1,
.value_type_id = 4,
.max_entries = 4,
},
@ -440,10 +447,11 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "void_test2_map",
.key_size = sizeof(int),
.value_size = sizeof(void *),
.key_id = 1,
.value_id = 3,
.key_type_id = 1,
.value_type_id = 3,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid member",
},
/* typedef const void * const_void_ptr;
@ -458,9 +466,9 @@ static struct btf_raw_test raw_tests[] = {
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 0),
/* const void* */ /* [3] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 2),
/* typedef const void * const_void_ptr */
/* typedef const void * const_void_ptr */ /* [4] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 3),
/* const_void_ptr[4] */ /* [4] */
/* const_void_ptr[4] */ /* [5] */
BTF_TYPE_ARRAY_ENC(3, 1, 4),
BTF_END_RAW,
},
@ -470,8 +478,8 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "void_test3_map",
.key_size = sizeof(int),
.value_size = sizeof(void *) * 4,
.key_id = 1,
.value_id = 4,
.key_type_id = 1,
.value_type_id = 4,
.max_entries = 4,
},
@ -493,10 +501,11 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "void_test4_map",
.key_size = sizeof(int),
.value_size = sizeof(void *) * 4,
.key_id = 1,
.value_id = 3,
.key_type_id = 1,
.value_type_id = 3,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid elem",
},
/* Array_A <------------------+
@ -523,10 +532,11 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "loop_test1_map",
.key_size = sizeof(int),
.value_size = sizeof(sizeof(int) * 8),
.key_id = 1,
.value_id = 2,
.key_type_id = 1,
.value_type_id = 2,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Loop detected",
},
/* typedef is _before_ the BTF type of Array_A and Array_B
@ -551,7 +561,6 @@ static struct btf_raw_test raw_tests[] = {
BTF_TYPE_ARRAY_ENC(2, 1, 8), /* [3] */
/* Array_B */
BTF_TYPE_ARRAY_ENC(3, 1, 8), /* [4] */
BTF_END_RAW,
},
.str_sec = "\0int_array\0",
@ -560,10 +569,11 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "loop_test2_map",
.key_size = sizeof(int),
.value_size = sizeof(sizeof(int) * 8),
.key_id = 1,
.value_id = 2,
.key_type_id = 1,
.value_type_id = 2,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Loop detected",
},
/* Array_A <------------------+
@ -582,7 +592,6 @@ static struct btf_raw_test raw_tests[] = {
BTF_TYPE_ARRAY_ENC(3, 1, 8),
/* Array_B */ /* [3] */
BTF_TYPE_ARRAY_ENC(2, 1, 8),
BTF_END_RAW,
},
.str_sec = "",
@ -591,10 +600,11 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "loop_test3_map",
.key_size = sizeof(int),
.value_size = sizeof(sizeof(int) * 8),
.key_id = 1,
.value_id = 2,
.key_type_id = 1,
.value_type_id = 2,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Loop detected",
},
/* typedef is _between_ the BTF type of Array_A and Array_B
@ -627,10 +637,11 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "loop_test4_map",
.key_size = sizeof(int),
.value_size = sizeof(sizeof(int) * 8),
.key_id = 1,
.value_id = 2,
.key_type_id = 1,
.value_type_id = 2,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Loop detected",
},
/* typedef struct B Struct_B
@ -668,10 +679,11 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "loop_test5_map",
.key_size = sizeof(int),
.value_size = 8,
.key_id = 1,
.value_id = 2,
.key_type_id = 1,
.value_type_id = 2,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Loop detected",
},
/* struct A {
@ -697,10 +709,11 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "loop_test6_map",
.key_size = sizeof(int),
.value_size = 8,
.key_id = 1,
.value_id = 2,
.key_type_id = 1,
.value_type_id = 2,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Loop detected",
},
{
@ -724,10 +737,11 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "loop_test7_map",
.key_size = sizeof(int),
.value_size = sizeof(void *),
.key_id = 1,
.value_id = 2,
.key_type_id = 1,
.value_type_id = 2,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Loop detected",
},
{
@ -759,14 +773,73 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "loop_test8_map",
.key_size = sizeof(int),
.value_size = sizeof(void *),
.key_id = 1,
.value_id = 2,
.key_type_id = 1,
.value_type_id = 2,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Loop detected",
},
{
.descr = "type_off == str_off",
.descr = "string section does not end with null",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
BTF_END_RAW,
},
.str_sec = "\0int",
.str_sec_size = sizeof("\0int") - 1,
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "hdr_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid string section",
},
{
.descr = "empty string section",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = 0,
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "hdr_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid string section",
},
{
.descr = "empty type section",
.raw_types = {
BTF_END_RAW,
},
.str_sec = "\0int",
.str_sec_size = sizeof("\0int"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "hdr_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "No type found",
},
{
.descr = "btf_header test. Longer hdr_len",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
@ -778,15 +851,16 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "hdr_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_id = 1,
.value_id = 1,
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.type_off_delta = sizeof(struct btf_type) + sizeof(int) + sizeof("\0int"),
.hdr_len_delta = 4,
.err_str = "Unsupported btf_header",
},
{
.descr = "Unaligned type_off",
.descr = "btf_header test. Gap between hdr and type",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
@ -798,15 +872,16 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "hdr_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_id = 1,
.value_id = 1,
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.type_off_delta = 1,
.type_off_delta = 4,
.err_str = "Unsupported section found",
},
{
.descr = "str_off beyonds btf size",
.descr = "btf_header test. Gap between type and str",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
@ -818,15 +893,16 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "hdr_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_id = 1,
.value_id = 1,
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.str_off_delta = sizeof("\0int") + 1,
.str_off_delta = 4,
.err_str = "Unsupported section found",
},
{
.descr = "str_len beyonds btf size",
.descr = "btf_header test. Overlap between type and str",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
@ -838,15 +914,16 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "hdr_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_id = 1,
.value_id = 1,
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.str_len_delta = 1,
.str_off_delta = -4,
.err_str = "Section overlap found",
},
{
.descr = "String section does not end with null",
.descr = "btf_header test. Larger BTF size",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
@ -858,15 +935,16 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "hdr_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_id = 1,
.value_id = 1,
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.str_len_delta = -1,
.str_len_delta = -4,
.err_str = "Unsupported section found",
},
{
.descr = "Empty string section",
.descr = "btf_header test. Smaller BTF size",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
@ -878,11 +956,267 @@ static struct btf_raw_test raw_tests[] = {
.map_name = "hdr_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_id = 1,
.value_id = 1,
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.str_len_delta = 0 - (int)sizeof("\0int"),
.str_len_delta = 4,
.err_str = "Total section length too long",
},
{
.descr = "array test. index_type/elem_type \"int\"",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* int[16] */ /* [2] */
BTF_TYPE_ARRAY_ENC(1, 1, 16),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "array test. index_type/elem_type \"const int\"",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* int[16] */ /* [2] */
BTF_TYPE_ARRAY_ENC(3, 3, 16),
/* CONST type_id=1 */ /* [3] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 1),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "array test. index_type \"const int:31\"",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* int:31 */ /* [2] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 31, 4),
/* int[16] */ /* [3] */
BTF_TYPE_ARRAY_ENC(1, 4, 16),
/* CONST type_id=2 */ /* [4] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 2),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid index",
},
{
.descr = "array test. elem_type \"const int:31\"",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* int:31 */ /* [2] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 31, 4),
/* int[16] */ /* [3] */
BTF_TYPE_ARRAY_ENC(4, 1, 16),
/* CONST type_id=2 */ /* [4] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 2),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid array of int",
},
{
.descr = "array test. index_type \"void\"",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* int[16] */ /* [2] */
BTF_TYPE_ARRAY_ENC(1, 0, 16),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid index",
},
{
.descr = "array test. index_type \"const void\"",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* int[16] */ /* [2] */
BTF_TYPE_ARRAY_ENC(1, 3, 16),
/* CONST type_id=0 (void) */ /* [3] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 0),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid index",
},
{
.descr = "array test. elem_type \"const void\"",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* int[16] */ /* [2] */
BTF_TYPE_ARRAY_ENC(3, 1, 16),
/* CONST type_id=0 (void) */ /* [3] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 0),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid elem",
},
{
.descr = "array test. elem_type \"const void *\"",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* const void *[16] */ /* [2] */
BTF_TYPE_ARRAY_ENC(3, 1, 16),
/* CONST type_id=4 */ /* [3] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 4),
/* void* */ /* [4] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 0),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "array test. index_type \"const void *\"",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* const void *[16] */ /* [2] */
BTF_TYPE_ARRAY_ENC(3, 3, 16),
/* CONST type_id=4 */ /* [3] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 4),
/* void* */ /* [4] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 0),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid index",
},
{
.descr = "int test. invalid int_data",
.raw_types = {
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_INT, 0, 0), 4),
0x10000000,
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid int_data",
},
{
.descr = "invalid BTF_INFO",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
BTF_TYPE_ENC(0, 0x10000000, 4),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid btf_info",
},
}; /* struct btf_raw_test raw_tests[] */
@ -951,6 +1285,7 @@ static void *btf_raw_create(const struct btf_header *hdr,
memcpy(raw_btf + offset, str, str_sec_size);
ret_hdr = (struct btf_header *)raw_btf;
ret_hdr->type_len = type_sec_size;
ret_hdr->str_off = type_sec_size;
ret_hdr->str_len = str_sec_size;
@ -981,6 +1316,7 @@ static int do_test_raw(unsigned int test_num)
hdr = raw_btf;
hdr->hdr_len = (int)hdr->hdr_len + test->hdr_len_delta;
hdr->type_off = (int)hdr->type_off + test->type_off_delta;
hdr->str_off = (int)hdr->str_off + test->str_off_delta;
hdr->str_len = (int)hdr->str_len + test->str_len_delta;
@ -992,8 +1328,13 @@ static int do_test_raw(unsigned int test_num)
free(raw_btf);
err = ((btf_fd == -1) != test->btf_load_err);
CHECK(err, "btf_fd:%d test->btf_load_err:%u",
btf_fd, test->btf_load_err);
if (CHECK(err, "btf_fd:%d test->btf_load_err:%u",
btf_fd, test->btf_load_err) ||
CHECK(test->err_str && !strstr(btf_log_buf, test->err_str),
"expected err_str:%s", test->err_str)) {
err = -1;
goto done;
}
if (err || btf_fd == -1)
goto done;
@ -1004,8 +1345,8 @@ static int do_test_raw(unsigned int test_num)
create_attr.value_size = test->value_size;
create_attr.max_entries = test->max_entries;
create_attr.btf_fd = btf_fd;
create_attr.btf_key_id = test->key_id;
create_attr.btf_value_id = test->value_id;
create_attr.btf_key_type_id = test->key_type_id;
create_attr.btf_value_type_id = test->value_type_id;
map_fd = bpf_create_map_xattr(&create_attr);
@ -1267,8 +1608,8 @@ static int test_btf_id(unsigned int test_num)
create_attr.value_size = sizeof(unsigned int);
create_attr.max_entries = 4;
create_attr.btf_fd = btf_fd[0];
create_attr.btf_key_id = 1;
create_attr.btf_value_id = 2;
create_attr.btf_key_type_id = 1;
create_attr.btf_value_type_id = 2;
map_fd = bpf_create_map_xattr(&create_attr);
if (CHECK(map_fd == -1, "errno:%d", errno)) {
@ -1279,10 +1620,10 @@ static int test_btf_id(unsigned int test_num)
info_len = sizeof(map_info);
err = bpf_obj_get_info_by_fd(map_fd, &map_info, &info_len);
if (CHECK(err || map_info.btf_id != info[0].id ||
map_info.btf_key_id != 1 || map_info.btf_value_id != 2,
"err:%d errno:%d info.id:%u btf_id:%u btf_key_id:%u btf_value_id:%u",
err, errno, info[0].id, map_info.btf_id, map_info.btf_key_id,
map_info.btf_value_id)) {
map_info.btf_key_type_id != 1 || map_info.btf_value_type_id != 2,
"err:%d errno:%d info.id:%u btf_id:%u btf_key_type_id:%u btf_value_type_id:%u",
err, errno, info[0].id, map_info.btf_id, map_info.btf_key_type_id,
map_info.btf_value_type_id)) {
err = -1;
goto done;
}
@ -1542,10 +1883,10 @@ static int do_test_file(unsigned int test_num)
goto done;
}
err = (bpf_map__btf_key_id(map) == 0 || bpf_map__btf_value_id(map) == 0)
err = (bpf_map__btf_key_type_id(map) == 0 || bpf_map__btf_value_type_id(map) == 0)
!= test->btf_kv_notfound;
if (CHECK(err, "btf_key_id:%u btf_value_id:%u test->btf_kv_notfound:%u",
bpf_map__btf_key_id(map), bpf_map__btf_value_id(map),
if (CHECK(err, "btf_key_type_id:%u btf_value_type_id:%u test->btf_kv_notfound:%u",
bpf_map__btf_key_type_id(map), bpf_map__btf_value_type_id(map),
test->btf_kv_notfound))
goto done;
@ -1615,7 +1956,7 @@ static struct btf_raw_test pprint_test = {
/* 28 bits */ /* [7] */
BTF_TYPE_INT_ENC(0, 0, 0, 28, 4),
/* uint8_t[8] */ /* [8] */
BTF_TYPE_ARRAY_ENC(9, 3, 8),
BTF_TYPE_ARRAY_ENC(9, 1, 8),
/* typedef unsigned char uint8_t */ /* [9] */
BTF_TYPEDEF_ENC(NAME_TBD, 1),
/* typedef unsigned short uint16_t */ /* [10] */
@ -1654,8 +1995,8 @@ static struct btf_raw_test pprint_test = {
.map_name = "pprint_test",
.key_size = sizeof(unsigned int),
.value_size = sizeof(struct pprint_mapv),
.key_id = 3, /* unsigned int */
.value_id = 16, /* struct pprint_mapv */
.key_type_id = 3, /* unsigned int */
.value_type_id = 16, /* struct pprint_mapv */
.max_entries = 128 * 1024,
};
@ -1712,8 +2053,8 @@ static int test_pprint(void)
create_attr.value_size = test->value_size;
create_attr.max_entries = test->max_entries;
create_attr.btf_fd = btf_fd;
create_attr.btf_key_id = test->key_id;
create_attr.btf_value_id = test->value_id;
create_attr.btf_key_type_id = test->key_type_id;
create_attr.btf_value_type_id = test->value_type_id;
map_fd = bpf_create_map_xattr(&create_attr);
if (CHECK(map_fd == -1, "errno:%d", errno)) {