[PATCH RFC 1/6] bpf: Add BTF_KIND_FLOAT to uapi
From: Ilya Leoshkevich <iii@linux.ibm.com>
Date: 2021-02-10 03:04:59
Subsystem:
bpf [general] (safe dynamic programs and tools), the rest · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Linus Torvalds
Add a new kind value, expand the kind bitfield, add a macro for parsing the additional u32. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> --- include/uapi/linux/btf.h | 10 ++++++++-- tools/include/uapi/linux/btf.h | 10 ++++++++-- 2 files changed, 16 insertions(+), 4 deletions(-)
diff --git a/include/uapi/linux/btf.h b/include/uapi/linux/btf.h
index 5a667107ad2c..e713430cb033 100644
--- a/include/uapi/linux/btf.h
+++ b/include/uapi/linux/btf.h@@ -52,7 +52,7 @@ struct btf_type { }; }; -#define BTF_INFO_KIND(info) (((info) >> 24) & 0x0f) +#define BTF_INFO_KIND(info) (((info) >> 24) & 0x1f) #define BTF_INFO_VLEN(info) ((info) & 0xffff) #define BTF_INFO_KFLAG(info) ((info) >> 31)
@@ -72,7 +72,8 @@ struct btf_type { #define BTF_KIND_FUNC_PROTO 13 /* Function Proto */ #define BTF_KIND_VAR 14 /* Variable */ #define BTF_KIND_DATASEC 15 /* Section */ -#define BTF_KIND_MAX BTF_KIND_DATASEC +#define BTF_KIND_FLOAT 16 /* Floating point */ +#define BTF_KIND_MAX BTF_KIND_FLOAT #define NR_BTF_KINDS (BTF_KIND_MAX + 1) /* For some specific BTF_KIND, "struct btf_type" is immediately
@@ -169,4 +170,9 @@ struct btf_var_secinfo { __u32 size; }; +/* BTF_KIND_FLOAT is followed by a u32 and the following + * is the 32 bits arrangement: + */ +#define BTF_FLOAT_BITS(VAL) ((VAL) & 0x000000ff) + #endif /* _UAPI__LINUX_BTF_H__ */
diff --git a/tools/include/uapi/linux/btf.h b/tools/include/uapi/linux/btf.h
index 5a667107ad2c..e713430cb033 100644
--- a/tools/include/uapi/linux/btf.h
+++ b/tools/include/uapi/linux/btf.h@@ -52,7 +52,7 @@ struct btf_type { }; }; -#define BTF_INFO_KIND(info) (((info) >> 24) & 0x0f) +#define BTF_INFO_KIND(info) (((info) >> 24) & 0x1f) #define BTF_INFO_VLEN(info) ((info) & 0xffff) #define BTF_INFO_KFLAG(info) ((info) >> 31)
@@ -72,7 +72,8 @@ struct btf_type { #define BTF_KIND_FUNC_PROTO 13 /* Function Proto */ #define BTF_KIND_VAR 14 /* Variable */ #define BTF_KIND_DATASEC 15 /* Section */ -#define BTF_KIND_MAX BTF_KIND_DATASEC +#define BTF_KIND_FLOAT 16 /* Floating point */ +#define BTF_KIND_MAX BTF_KIND_FLOAT #define NR_BTF_KINDS (BTF_KIND_MAX + 1) /* For some specific BTF_KIND, "struct btf_type" is immediately
@@ -169,4 +170,9 @@ struct btf_var_secinfo { __u32 size; }; +/* BTF_KIND_FLOAT is followed by a u32 and the following + * is the 32 bits arrangement: + */ +#define BTF_FLOAT_BITS(VAL) ((VAL) & 0x000000ff) + #endif /* _UAPI__LINUX_BTF_H__ */
--
2.29.2