diff options
| author | Martynas Pumputis <m@lambda.lt> | 2019-06-12 19:05:40 +0300 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-06-13 23:43:42 +0300 |
| commit | b1d6c15b9d824a58c5415673f374fac19e8eccdf (patch) | |
| tree | c91b7b613437b4bc0a99679ae7d801f3638d62ab /include | |
| parent | 01d76b5317003e019ace561a9b775f51aafdfdc4 (diff) | |
| download | linux-b1d6c15b9d824a58c5415673f374fac19e8eccdf.tar.xz | |
bpf: simplify definition of BPF_FIB_LOOKUP related flags
Previously, the BPF_FIB_LOOKUP_{DIRECT,OUTPUT} flags in the BPF UAPI
were defined with the help of BIT macro. This had the following issues:
- In order to use any of the flags, a user was required to depend
on <linux/bits.h>.
- No other flag in bpf.h uses the macro, so it seems that an unwritten
convention is to use (1 << (nr)) to define BPF-related flags.
Fixes: 87f5fc7e48dd ("bpf: Provide helper to do forwarding lookups in kernel FIB table")
Signed-off-by: Martynas Pumputis <m@lambda.lt>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/bpf.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index e4114a7e4451..a8b823c30b43 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -3378,8 +3378,8 @@ struct bpf_raw_tracepoint_args { /* DIRECT: Skip the FIB rules and go to FIB table associated with device * OUTPUT: Do lookup from egress perspective; default is ingress */ -#define BPF_FIB_LOOKUP_DIRECT BIT(0) -#define BPF_FIB_LOOKUP_OUTPUT BIT(1) +#define BPF_FIB_LOOKUP_DIRECT (1U << 0) +#define BPF_FIB_LOOKUP_OUTPUT (1U << 1) enum { BPF_FIB_LKUP_RET_SUCCESS, /* lookup successful */ |