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| author |   Yonghong Song <yhs@fb.com> | 2021-09-14 15:30:25 -0700 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2021-09-14 18:45:52 -0700 |
| commit | 5b84bd10363e36ceb7c4c1ae749a3fc8adf8df45 (patch) | |
| tree | 908974045efcd5f2b1485aac3e19763d94250c72 /tools/lib/bpf/btf.h | |
| parent | libbpf: Rename btf_{hash,equal}_int to btf_{hash,equal}_int_tag (diff) | |
| download | linux-dev-5b84bd10363e36ceb7c4c1ae749a3fc8adf8df45.tar.xz linux-dev-5b84bd10363e36ceb7c4c1ae749a3fc8adf8df45.zip | |
libbpf: Add support for BTF_KIND_TAG
Add BTF_KIND_TAG support for parsing and dedup.
Also added sanitization for BTF_KIND_TAG. If BTF_KIND_TAG is not
supported in the kernel, sanitize it to INTs.
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210914223025.246687-1-yhs@fb.com
Diffstat (limited to 'tools/lib/bpf/btf.h')
| -rw-r--r-- | tools/lib/bpf/btf.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tools/lib/bpf/btf.h b/tools/lib/bpf/btf.h index f2e2fab950b7..659ea8a2769b 100644 --- a/tools/lib/bpf/btf.h +++ b/tools/lib/bpf/btf.h @@ -143,6 +143,10 @@ LIBBPF_API int btf__add_datasec(struct btf *btf, const char *name, __u32 byte_sz LIBBPF_API int btf__add_datasec_var_info(struct btf *btf, int var_type_id, __u32 offset, __u32 byte_sz); +/* tag construction API */ +LIBBPF_API int btf__add_tag(struct btf *btf, const char *value, int ref_type_id, + int component_idx); + struct btf_dedup_opts { unsigned int dedup_table_size; bool dont_resolve_fwds; @@ -330,6 +334,11 @@ static inline bool btf_is_float(const struct btf_type *t) return btf_kind(t) == BTF_KIND_FLOAT; } +static inline bool btf_is_tag(const struct btf_type *t) +{ + return btf_kind(t) == BTF_KIND_TAG; +} + static inline __u8 btf_int_encoding(const struct btf_type *t) { return BTF_INT_ENCODING(*(__u32 *)(t + 1)); @@ -398,6 +407,12 @@ btf_var_secinfos(const struct btf_type *t) return (struct btf_var_secinfo *)(t + 1); } +struct btf_tag; +static inline struct btf_tag *btf_tag(const struct btf_type *t) +{ + return (struct btf_tag *)(t + 1); +} + #ifdef __cplusplus } /* extern "C" */ #endif |