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| author | Martin KaFai Lau <kafai@fb.com> | 2018-07-19 22:14:31 -0700 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2018-07-20 10:25:48 +0200 |
| commit | 36fc3c8c282c01ad1570bd864de52f128d731b75 (patch) | |
| tree | 3ae71065624e4b4321f13045b6ad2f16f612792f /include/uapi/linux/btf.h | |
| parent | 759b94a00a207ef605f3fd6f6e99570799688145 (diff) | |
| download | lwn-36fc3c8c282c01ad1570bd864de52f128d731b75.tar.gz lwn-36fc3c8c282c01ad1570bd864de52f128d731b75.zip | |
bpf: btf: Clean up BTF_INT_BITS() in uapi btf.h
This patch shrinks the BTF_INT_BITS() mask. The current
btf_int_check_meta() ensures the nr_bits of an integer
cannot exceed 64. Hence, it is mostly an uapi cleanup.
The actual btf usage (i.e. seq_show()) is also modified
to use u8 instead of u16. The verification (e.g. btf_int_check_meta())
path stays as is to deal with invalid BTF situation.
Fixes: 69b693f0aefa ("bpf: btf: Introduce BPF Type Format (BTF)")
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'include/uapi/linux/btf.h')
| -rw-r--r-- | include/uapi/linux/btf.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/uapi/linux/btf.h b/include/uapi/linux/btf.h index 0b5ddbe135a4..972265f32871 100644 --- a/include/uapi/linux/btf.h +++ b/include/uapi/linux/btf.h @@ -76,7 +76,7 @@ struct btf_type { */ #define BTF_INT_ENCODING(VAL) (((VAL) & 0x0f000000) >> 24) #define BTF_INT_OFFSET(VAL) (((VAL & 0x00ff0000)) >> 16) -#define BTF_INT_BITS(VAL) ((VAL) & 0x0000ffff) +#define BTF_INT_BITS(VAL) ((VAL) & 0x000000ff) /* Attributes stored in the BTF_INT_ENCODING */ #define BTF_INT_SIGNED (1 << 0) |