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selftests/bpf: Test new enum kflag and enum64 API functions
Add tests to use the new enum kflag and enum64 API functions in selftest btf_write. Acked-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/r/20220607062703.3724287-1-yhs@fb.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Yonghong Song
Alexei Starovoitov
parent
d932815a43
commit
2b7301457f
2 changed files with 114 additions and 37 deletions
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@ -26,11 +26,12 @@ static const char * const btf_kind_str_mapping[] = {
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[BTF_KIND_FLOAT] = "FLOAT",
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[BTF_KIND_DECL_TAG] = "DECL_TAG",
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[BTF_KIND_TYPE_TAG] = "TYPE_TAG",
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[BTF_KIND_ENUM64] = "ENUM64",
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};
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static const char *btf_kind_str(__u16 kind)
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{
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if (kind > BTF_KIND_TYPE_TAG)
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if (kind > BTF_KIND_ENUM64)
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return "UNKNOWN";
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return btf_kind_str_mapping[kind];
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}
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@ -139,14 +140,32 @@ int fprintf_btf_type_raw(FILE *out, const struct btf *btf, __u32 id)
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}
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case BTF_KIND_ENUM: {
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const struct btf_enum *v = btf_enum(t);
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const char *fmt_str;
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fprintf(out, " size=%u vlen=%u", t->size, vlen);
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fmt_str = btf_kflag(t) ? "\n\t'%s' val=%d" : "\n\t'%s' val=%u";
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fprintf(out, " encoding=%s size=%u vlen=%u",
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btf_kflag(t) ? "SIGNED" : "UNSIGNED", t->size, vlen);
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for (i = 0; i < vlen; i++, v++) {
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fprintf(out, "\n\t'%s' val=%u",
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fprintf(out, fmt_str,
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btf_str(btf, v->name_off), v->val);
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}
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break;
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}
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case BTF_KIND_ENUM64: {
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const struct btf_enum64 *v = btf_enum64(t);
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const char *fmt_str;
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fmt_str = btf_kflag(t) ? "\n\t'%s' val=%lld" : "\n\t'%s' val=%llu";
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fprintf(out, " encoding=%s size=%u vlen=%u",
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btf_kflag(t) ? "SIGNED" : "UNSIGNED", t->size, vlen);
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for (i = 0; i < vlen; i++, v++) {
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fprintf(out, fmt_str,
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btf_str(btf, v->name_off),
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((__u64)v->val_hi32 << 32) | v->val_lo32);
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}
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break;
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}
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case BTF_KIND_FWD:
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fprintf(out, " fwd_kind=%s", btf_kflag(t) ? "union" : "struct");
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break;
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@ -9,6 +9,7 @@ static void gen_btf(struct btf *btf)
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const struct btf_var_secinfo *vi;
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const struct btf_type *t;
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const struct btf_member *m;
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const struct btf_enum64 *v64;
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const struct btf_enum *v;
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const struct btf_param *p;
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int id, err, str_off;
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@ -171,7 +172,7 @@ static void gen_btf(struct btf *btf)
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ASSERT_STREQ(btf__str_by_offset(btf, v->name_off), "v2", "v2_name");
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ASSERT_EQ(v->val, 2, "v2_val");
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ASSERT_STREQ(btf_type_raw_dump(btf, 9),
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"[9] ENUM 'e1' size=4 vlen=2\n"
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"[9] ENUM 'e1' encoding=UNSIGNED size=4 vlen=2\n"
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"\t'v1' val=1\n"
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"\t'v2' val=2", "raw_dump");
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@ -202,7 +203,7 @@ static void gen_btf(struct btf *btf)
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ASSERT_EQ(btf_vlen(t), 0, "enum_fwd_kind");
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ASSERT_EQ(t->size, 4, "enum_fwd_sz");
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ASSERT_STREQ(btf_type_raw_dump(btf, 12),
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"[12] ENUM 'enum_fwd' size=4 vlen=0", "raw_dump");
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"[12] ENUM 'enum_fwd' encoding=UNSIGNED size=4 vlen=0", "raw_dump");
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/* TYPEDEF */
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id = btf__add_typedef(btf, "typedef1", 1);
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@ -307,6 +308,48 @@ static void gen_btf(struct btf *btf)
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ASSERT_EQ(t->type, 1, "tag_type");
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ASSERT_STREQ(btf_type_raw_dump(btf, 20),
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"[20] TYPE_TAG 'tag1' type_id=1", "raw_dump");
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/* ENUM64 */
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id = btf__add_enum64(btf, "e1", 8, true);
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ASSERT_EQ(id, 21, "enum64_id");
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err = btf__add_enum64_value(btf, "v1", -1);
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ASSERT_OK(err, "v1_res");
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err = btf__add_enum64_value(btf, "v2", 0x123456789); /* 4886718345 */
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ASSERT_OK(err, "v2_res");
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t = btf__type_by_id(btf, 21);
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ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "e1", "enum64_name");
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ASSERT_EQ(btf_kind(t), BTF_KIND_ENUM64, "enum64_kind");
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ASSERT_EQ(btf_vlen(t), 2, "enum64_vlen");
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ASSERT_EQ(t->size, 8, "enum64_sz");
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v64 = btf_enum64(t) + 0;
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ASSERT_STREQ(btf__str_by_offset(btf, v64->name_off), "v1", "v1_name");
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ASSERT_EQ(v64->val_hi32, 0xffffffff, "v1_val");
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ASSERT_EQ(v64->val_lo32, 0xffffffff, "v1_val");
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v64 = btf_enum64(t) + 1;
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ASSERT_STREQ(btf__str_by_offset(btf, v64->name_off), "v2", "v2_name");
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ASSERT_EQ(v64->val_hi32, 0x1, "v2_val");
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ASSERT_EQ(v64->val_lo32, 0x23456789, "v2_val");
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ASSERT_STREQ(btf_type_raw_dump(btf, 21),
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"[21] ENUM64 'e1' encoding=SIGNED size=8 vlen=2\n"
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"\t'v1' val=-1\n"
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"\t'v2' val=4886718345", "raw_dump");
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id = btf__add_enum64(btf, "e1", 8, false);
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ASSERT_EQ(id, 22, "enum64_id");
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err = btf__add_enum64_value(btf, "v1", 0xffffffffFFFFFFFF); /* 18446744073709551615 */
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ASSERT_OK(err, "v1_res");
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t = btf__type_by_id(btf, 22);
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ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "e1", "enum64_name");
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ASSERT_EQ(btf_kind(t), BTF_KIND_ENUM64, "enum64_kind");
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ASSERT_EQ(btf_vlen(t), 1, "enum64_vlen");
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ASSERT_EQ(t->size, 8, "enum64_sz");
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v64 = btf_enum64(t) + 0;
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ASSERT_STREQ(btf__str_by_offset(btf, v64->name_off), "v1", "v1_name");
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ASSERT_EQ(v64->val_hi32, 0xffffffff, "v1_val");
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ASSERT_EQ(v64->val_lo32, 0xffffffff, "v1_val");
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ASSERT_STREQ(btf_type_raw_dump(btf, 22),
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"[22] ENUM64 'e1' encoding=UNSIGNED size=8 vlen=1\n"
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"\t'v1' val=18446744073709551615", "raw_dump");
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}
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static void test_btf_add()
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@ -332,12 +375,12 @@ static void test_btf_add()
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"\t'f2' type_id=1 bits_offset=32 bitfield_size=16",
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"[8] UNION 'u1' size=8 vlen=1\n"
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"\t'f1' type_id=1 bits_offset=0 bitfield_size=16",
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"[9] ENUM 'e1' size=4 vlen=2\n"
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"[9] ENUM 'e1' encoding=UNSIGNED size=4 vlen=2\n"
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"\t'v1' val=1\n"
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"\t'v2' val=2",
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"[10] FWD 'struct_fwd' fwd_kind=struct",
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"[11] FWD 'union_fwd' fwd_kind=union",
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"[12] ENUM 'enum_fwd' size=4 vlen=0",
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"[12] ENUM 'enum_fwd' encoding=UNSIGNED size=4 vlen=0",
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"[13] TYPEDEF 'typedef1' type_id=1",
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"[14] FUNC 'func1' type_id=15 linkage=global",
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"[15] FUNC_PROTO '(anon)' ret_type_id=1 vlen=2\n"
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@ -348,7 +391,12 @@ static void test_btf_add()
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"\ttype_id=1 offset=4 size=8",
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"[18] DECL_TAG 'tag1' type_id=16 component_idx=-1",
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"[19] DECL_TAG 'tag2' type_id=14 component_idx=1",
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"[20] TYPE_TAG 'tag1' type_id=1");
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"[20] TYPE_TAG 'tag1' type_id=1",
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"[21] ENUM64 'e1' encoding=SIGNED size=8 vlen=2\n"
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"\t'v1' val=-1\n"
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"\t'v2' val=4886718345",
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"[22] ENUM64 'e1' encoding=UNSIGNED size=8 vlen=1\n"
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"\t'v1' val=18446744073709551615");
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btf__free(btf);
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}
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@ -370,7 +418,7 @@ static void test_btf_add_btf()
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gen_btf(btf2);
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id = btf__add_btf(btf1, btf2);
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if (!ASSERT_EQ(id, 21, "id"))
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if (!ASSERT_EQ(id, 23, "id"))
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goto cleanup;
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VALIDATE_RAW_BTF(
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@ -386,12 +434,12 @@ static void test_btf_add_btf()
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"\t'f2' type_id=1 bits_offset=32 bitfield_size=16",
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"[8] UNION 'u1' size=8 vlen=1\n"
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"\t'f1' type_id=1 bits_offset=0 bitfield_size=16",
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"[9] ENUM 'e1' size=4 vlen=2\n"
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"[9] ENUM 'e1' encoding=UNSIGNED size=4 vlen=2\n"
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"\t'v1' val=1\n"
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"\t'v2' val=2",
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"[10] FWD 'struct_fwd' fwd_kind=struct",
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"[11] FWD 'union_fwd' fwd_kind=union",
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"[12] ENUM 'enum_fwd' size=4 vlen=0",
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"[12] ENUM 'enum_fwd' encoding=UNSIGNED size=4 vlen=0",
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"[13] TYPEDEF 'typedef1' type_id=1",
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"[14] FUNC 'func1' type_id=15 linkage=global",
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"[15] FUNC_PROTO '(anon)' ret_type_id=1 vlen=2\n"
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@ -403,36 +451,46 @@ static void test_btf_add_btf()
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"[18] DECL_TAG 'tag1' type_id=16 component_idx=-1",
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"[19] DECL_TAG 'tag2' type_id=14 component_idx=1",
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"[20] TYPE_TAG 'tag1' type_id=1",
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"[21] ENUM64 'e1' encoding=SIGNED size=8 vlen=2\n"
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"\t'v1' val=-1\n"
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"\t'v2' val=4886718345",
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"[22] ENUM64 'e1' encoding=UNSIGNED size=8 vlen=1\n"
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"\t'v1' val=18446744073709551615",
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/* types appended from the second BTF */
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"[21] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
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"[22] PTR '(anon)' type_id=21",
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"[23] CONST '(anon)' type_id=25",
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"[24] VOLATILE '(anon)' type_id=23",
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"[25] RESTRICT '(anon)' type_id=24",
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"[26] ARRAY '(anon)' type_id=22 index_type_id=21 nr_elems=10",
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"[27] STRUCT 's1' size=8 vlen=2\n"
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"\t'f1' type_id=21 bits_offset=0\n"
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"\t'f2' type_id=21 bits_offset=32 bitfield_size=16",
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"[28] UNION 'u1' size=8 vlen=1\n"
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"\t'f1' type_id=21 bits_offset=0 bitfield_size=16",
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"[29] ENUM 'e1' size=4 vlen=2\n"
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"[23] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
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"[24] PTR '(anon)' type_id=23",
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"[25] CONST '(anon)' type_id=27",
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"[26] VOLATILE '(anon)' type_id=25",
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"[27] RESTRICT '(anon)' type_id=26",
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"[28] ARRAY '(anon)' type_id=24 index_type_id=23 nr_elems=10",
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"[29] STRUCT 's1' size=8 vlen=2\n"
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"\t'f1' type_id=23 bits_offset=0\n"
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"\t'f2' type_id=23 bits_offset=32 bitfield_size=16",
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"[30] UNION 'u1' size=8 vlen=1\n"
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"\t'f1' type_id=23 bits_offset=0 bitfield_size=16",
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"[31] ENUM 'e1' encoding=UNSIGNED size=4 vlen=2\n"
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"\t'v1' val=1\n"
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"\t'v2' val=2",
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"[30] FWD 'struct_fwd' fwd_kind=struct",
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"[31] FWD 'union_fwd' fwd_kind=union",
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"[32] ENUM 'enum_fwd' size=4 vlen=0",
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"[33] TYPEDEF 'typedef1' type_id=21",
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"[34] FUNC 'func1' type_id=35 linkage=global",
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"[35] FUNC_PROTO '(anon)' ret_type_id=21 vlen=2\n"
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"\t'p1' type_id=21\n"
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"\t'p2' type_id=22",
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"[36] VAR 'var1' type_id=21, linkage=global-alloc",
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"[37] DATASEC 'datasec1' size=12 vlen=1\n"
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"\ttype_id=21 offset=4 size=8",
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"[38] DECL_TAG 'tag1' type_id=36 component_idx=-1",
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"[39] DECL_TAG 'tag2' type_id=34 component_idx=1",
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"[40] TYPE_TAG 'tag1' type_id=21");
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"[32] FWD 'struct_fwd' fwd_kind=struct",
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"[33] FWD 'union_fwd' fwd_kind=union",
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"[34] ENUM 'enum_fwd' encoding=UNSIGNED size=4 vlen=0",
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"[35] TYPEDEF 'typedef1' type_id=23",
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"[36] FUNC 'func1' type_id=37 linkage=global",
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"[37] FUNC_PROTO '(anon)' ret_type_id=23 vlen=2\n"
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"\t'p1' type_id=23\n"
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"\t'p2' type_id=24",
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"[38] VAR 'var1' type_id=23, linkage=global-alloc",
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"[39] DATASEC 'datasec1' size=12 vlen=1\n"
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"\ttype_id=23 offset=4 size=8",
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"[40] DECL_TAG 'tag1' type_id=38 component_idx=-1",
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"[41] DECL_TAG 'tag2' type_id=36 component_idx=1",
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"[42] TYPE_TAG 'tag1' type_id=23",
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"[43] ENUM64 'e1' encoding=SIGNED size=8 vlen=2\n"
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"\t'v1' val=-1\n"
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"\t'v2' val=4886718345",
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"[44] ENUM64 'e1' encoding=UNSIGNED size=8 vlen=1\n"
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"\t'v1' val=18446744073709551615");
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cleanup:
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btf__free(btf1);
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