diff options
Diffstat (limited to 'tools/lib/bpf/btf.h')
| -rw-r--r-- | tools/lib/bpf/btf.h | 118 |
1 files changed, 33 insertions, 85 deletions
diff --git a/tools/lib/bpf/btf.h b/tools/lib/bpf/btf.h index 951ac7475794..583760df83b4 100644 --- a/tools/lib/bpf/btf.h +++ b/tools/lib/bpf/btf.h @@ -120,20 +120,12 @@ LIBBPF_API struct btf *libbpf_find_kernel_btf(void); LIBBPF_API struct btf *btf__load_from_kernel_by_id(__u32 id); LIBBPF_API struct btf *btf__load_from_kernel_by_id_split(__u32 id, struct btf *base_btf); -LIBBPF_DEPRECATED_SINCE(0, 6, "use btf__load_from_kernel_by_id instead") -LIBBPF_API int btf__get_from_id(__u32 id, struct btf **btf); -LIBBPF_DEPRECATED_SINCE(0, 6, "intended for internal libbpf use only") -LIBBPF_API int btf__finalize_data(struct bpf_object *obj, struct btf *btf); -LIBBPF_DEPRECATED_SINCE(0, 6, "use btf__load_into_kernel instead") -LIBBPF_API int btf__load(struct btf *btf); LIBBPF_API int btf__load_into_kernel(struct btf *btf); LIBBPF_API __s32 btf__find_by_name(const struct btf *btf, const char *type_name); LIBBPF_API __s32 btf__find_by_name_kind(const struct btf *btf, const char *type_name, __u32 kind); -LIBBPF_DEPRECATED_SINCE(0, 7, "use btf__type_cnt() instead; note that btf__get_nr_types() == btf__type_cnt() - 1") -LIBBPF_API __u32 btf__get_nr_types(const struct btf *btf); LIBBPF_API __u32 btf__type_cnt(const struct btf *btf); LIBBPF_API const struct btf *btf__base_btf(const struct btf *btf); LIBBPF_API const struct btf_type *btf__type_by_id(const struct btf *btf, @@ -150,29 +142,10 @@ LIBBPF_API void btf__set_fd(struct btf *btf, int fd); LIBBPF_API const void *btf__raw_data(const struct btf *btf, __u32 *size); LIBBPF_API const char *btf__name_by_offset(const struct btf *btf, __u32 offset); LIBBPF_API const char *btf__str_by_offset(const struct btf *btf, __u32 offset); -LIBBPF_DEPRECATED_SINCE(0, 7, "this API is not necessary when BTF-defined maps are used") -LIBBPF_API int btf__get_map_kv_tids(const struct btf *btf, const char *map_name, - __u32 expected_key_size, - __u32 expected_value_size, - __u32 *key_type_id, __u32 *value_type_id); LIBBPF_API struct btf_ext *btf_ext__new(const __u8 *data, __u32 size); LIBBPF_API void btf_ext__free(struct btf_ext *btf_ext); LIBBPF_API const void *btf_ext__raw_data(const struct btf_ext *btf_ext, __u32 *size); -LIBBPF_API LIBBPF_DEPRECATED("btf_ext__reloc_func_info was never meant as a public API and has wrong assumptions embedded in it; it will be removed in the future libbpf versions") -int btf_ext__reloc_func_info(const struct btf *btf, - const struct btf_ext *btf_ext, - const char *sec_name, __u32 insns_cnt, - void **func_info, __u32 *cnt); -LIBBPF_API LIBBPF_DEPRECATED("btf_ext__reloc_line_info was never meant as a public API and has wrong assumptions embedded in it; it will be removed in the future libbpf versions") -int btf_ext__reloc_line_info(const struct btf *btf, - const struct btf_ext *btf_ext, - const char *sec_name, __u32 insns_cnt, - void **line_info, __u32 *cnt); -LIBBPF_API LIBBPF_DEPRECATED("btf_ext__reloc_func_info is deprecated; write custom func_info parsing to fetch rec_size") -__u32 btf_ext__func_info_rec_size(const struct btf_ext *btf_ext); -LIBBPF_API LIBBPF_DEPRECATED("btf_ext__reloc_line_info is deprecated; write custom line_info parsing to fetch rec_size") -__u32 btf_ext__line_info_rec_size(const struct btf_ext *btf_ext); LIBBPF_API int btf__find_str(struct btf *btf, const char *s); LIBBPF_API int btf__add_str(struct btf *btf, const char *s); @@ -215,6 +188,8 @@ LIBBPF_API int btf__add_field(struct btf *btf, const char *name, int field_type_ /* enum construction APIs */ LIBBPF_API int btf__add_enum(struct btf *btf, const char *name, __u32 bytes_sz); LIBBPF_API int btf__add_enum_value(struct btf *btf, const char *name, __s64 value); +LIBBPF_API int btf__add_enum64(struct btf *btf, const char *name, __u32 bytes_sz, bool is_signed); +LIBBPF_API int btf__add_enum64_value(struct btf *btf, const char *name, __u64 value); enum btf_fwd_kind { BTF_FWD_STRUCT = 0, @@ -257,22 +232,12 @@ struct btf_dedup_opts { LIBBPF_API int btf__dedup(struct btf *btf, const struct btf_dedup_opts *opts); -LIBBPF_API int btf__dedup_v0_6_0(struct btf *btf, const struct btf_dedup_opts *opts); - -LIBBPF_DEPRECATED_SINCE(0, 7, "use btf__dedup() instead") -LIBBPF_API int btf__dedup_deprecated(struct btf *btf, struct btf_ext *btf_ext, const void *opts); -#define btf__dedup(...) ___libbpf_overload(___btf_dedup, __VA_ARGS__) -#define ___btf_dedup3(btf, btf_ext, opts) btf__dedup_deprecated(btf, btf_ext, opts) -#define ___btf_dedup2(btf, opts) btf__dedup(btf, opts) - struct btf_dump; struct btf_dump_opts { - union { - size_t sz; - void *ctx; /* DEPRECATED: will be gone in v1.0 */ - }; + size_t sz; }; +#define btf_dump_opts__last_field sz typedef void (*btf_dump_printf_fn_t)(void *ctx, const char *fmt, va_list args); @@ -281,51 +246,6 @@ LIBBPF_API struct btf_dump *btf_dump__new(const struct btf *btf, void *ctx, const struct btf_dump_opts *opts); -LIBBPF_API struct btf_dump *btf_dump__new_v0_6_0(const struct btf *btf, - btf_dump_printf_fn_t printf_fn, - void *ctx, - const struct btf_dump_opts *opts); - -LIBBPF_API struct btf_dump *btf_dump__new_deprecated(const struct btf *btf, - const struct btf_ext *btf_ext, - const struct btf_dump_opts *opts, - btf_dump_printf_fn_t printf_fn); - -/* Choose either btf_dump__new() or btf_dump__new_deprecated() based on the - * type of 4th argument. If it's btf_dump's print callback, use deprecated - * API; otherwise, choose the new btf_dump__new(). ___libbpf_override() - * doesn't work here because both variants have 4 input arguments. - * - * (void *) casts are necessary to avoid compilation warnings about type - * mismatches, because even though __builtin_choose_expr() only ever evaluates - * one side the other side still has to satisfy type constraints (this is - * compiler implementation limitation which might be lifted eventually, - * according to the documentation). So passing struct btf_ext in place of - * btf_dump_printf_fn_t would be generating compilation warning. Casting to - * void * avoids this issue. - * - * Also, two type compatibility checks for a function and function pointer are - * required because passing function reference into btf_dump__new() as - * btf_dump__new(..., my_callback, ...) and as btf_dump__new(..., - * &my_callback, ...) (not explicit ampersand in the latter case) actually - * differs as far as __builtin_types_compatible_p() is concerned. Thus two - * checks are combined to detect callback argument. - * - * The rest works just like in case of ___libbpf_override() usage with symbol - * versioning. - * - * C++ compilers don't support __builtin_types_compatible_p(), so at least - * don't screw up compilation for them and let C++ users pick btf_dump__new - * vs btf_dump__new_deprecated explicitly. - */ -#ifndef __cplusplus -#define btf_dump__new(a1, a2, a3, a4) __builtin_choose_expr( \ - __builtin_types_compatible_p(typeof(a4), btf_dump_printf_fn_t) || \ - __builtin_types_compatible_p(typeof(a4), void(void *, const char *, va_list)), \ - btf_dump__new_deprecated((void *)a1, (void *)a2, (void *)a3, (void *)a4), \ - btf_dump__new((void *)a1, (void *)a2, (void *)a3, (void *)a4)) -#endif - LIBBPF_API void btf_dump__free(struct btf_dump *d); LIBBPF_API int btf_dump__dump_type(struct btf_dump *d, __u32 id); @@ -393,9 +313,10 @@ btf_dump__dump_type_data(struct btf_dump *d, __u32 id, #ifndef BTF_KIND_FLOAT #define BTF_KIND_FLOAT 16 /* Floating point */ #endif -/* The kernel header switched to enums, so these two were never #defined */ +/* The kernel header switched to enums, so the following were never #defined */ #define BTF_KIND_DECL_TAG 17 /* Decl Tag */ #define BTF_KIND_TYPE_TAG 18 /* Type Tag */ +#define BTF_KIND_ENUM64 19 /* Enum for up-to 64bit values */ static inline __u16 btf_kind(const struct btf_type *t) { @@ -454,6 +375,11 @@ static inline bool btf_is_enum(const struct btf_type *t) return btf_kind(t) == BTF_KIND_ENUM; } +static inline bool btf_is_enum64(const struct btf_type *t) +{ + return btf_kind(t) == BTF_KIND_ENUM64; +} + static inline bool btf_is_fwd(const struct btf_type *t) { return btf_kind(t) == BTF_KIND_FWD; @@ -524,6 +450,18 @@ static inline bool btf_is_type_tag(const struct btf_type *t) return btf_kind(t) == BTF_KIND_TYPE_TAG; } +static inline bool btf_is_any_enum(const struct btf_type *t) +{ + return btf_is_enum(t) || btf_is_enum64(t); +} + +static inline bool btf_kind_core_compat(const struct btf_type *t1, + const struct btf_type *t2) +{ + return btf_kind(t1) == btf_kind(t2) || + (btf_is_any_enum(t1) && btf_is_any_enum(t2)); +} + static inline __u8 btf_int_encoding(const struct btf_type *t) { return BTF_INT_ENCODING(*(__u32 *)(t + 1)); @@ -549,6 +487,16 @@ static inline struct btf_enum *btf_enum(const struct btf_type *t) return (struct btf_enum *)(t + 1); } +static inline struct btf_enum64 *btf_enum64(const struct btf_type *t) +{ + return (struct btf_enum64 *)(t + 1); +} + +static inline __u64 btf_enum64_value(const struct btf_enum64 *e) +{ + return ((__u64)e->val_hi32 << 32) | e->val_lo32; +} + static inline struct btf_member *btf_members(const struct btf_type *t) { return (struct btf_member *)(t + 1); |