| Message ID | 151618713588.21869.16178302277967693140.stgit@firesoul |
|---|---|
| State | Accepted, archived |
| Delegated to: | BPF Maintainers |
| Headers | show |
| Series | [bpf-next] bpf: add comments to BPF ld/ldx sizes | expand |
On 01/17/2018 12:05 PM, Jesper Dangaard Brouer wrote: > Doc BPF ld/ldx size defines as comments in code, as it makes in > faster to lookup in a programming/review setting, than looking up > the sizes in Documentation/networking/filter.txt. > > Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Applied to bpf-next, thanks Jesper!
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 395d261948de..4729d9a002d4 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -17,7 +17,7 @@ #define BPF_ALU64 0x07 /* alu mode in double word width */ /* ld/ldx fields */ -#define BPF_DW 0x18 /* double word */ +#define BPF_DW 0x18 /* double word (64-bit) */ #define BPF_XADD 0xc0 /* exclusive add */ /* alu/jmp fields */ diff --git a/include/uapi/linux/bpf_common.h b/include/uapi/linux/bpf_common.h index 18be90725ab0..ee97668bdadb 100644 --- a/include/uapi/linux/bpf_common.h +++ b/include/uapi/linux/bpf_common.h @@ -15,9 +15,10 @@ /* ld/ldx fields */ #define BPF_SIZE(code) ((code) & 0x18) -#define BPF_W 0x00 -#define BPF_H 0x08 -#define BPF_B 0x10 +#define BPF_W 0x00 /* 32-bit */ +#define BPF_H 0x08 /* 16-bit */ +#define BPF_B 0x10 /* 8-bit */ +/* eBPF BPF_DW 0x18 64-bit */ #define BPF_MODE(code) ((code) & 0xe0) #define BPF_IMM 0x00 #define BPF_ABS 0x20
Doc BPF ld/ldx size defines as comments in code, as it makes in faster to lookup in a programming/review setting, than looking up the sizes in Documentation/networking/filter.txt. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> --- include/uapi/linux/bpf.h | 2 +- include/uapi/linux/bpf_common.h | 7 ++++--- 2 files changed, 5 insertions(+), 4 deletions(-)