Commit 85b0c6d4 authored by Dave Thaler's avatar Dave Thaler Committed by Daniel Borkmann
Browse files

bpf, docs: Fix definition of BPF_NEG operation 



Instruction is an arithmetic negative, not a bitwise inverse.

Signed-off-by: default avatarDave Thaler <dthaler@microsoft.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Acked-by: default avatarDavid Vernet <void@manifault.com>
Link: https://lore.kernel.org/bpf/20230627213912.951-1-dthaler1968@googlemail.com
parent bbaf1ff0

Documentation/bpf/instruction-set.rst

+1 −1
Original line number Diff line number Diff line
@@ -165,7 +165,7 @@ BPF_OR 0x40 dst \|= src 
BPF_AND   0x50   dst &= src

BPF_LSH   0x60   dst <<= (src & mask)

BPF_RSH   0x70   dst >>= (src & mask)

BPF_NEG   0x80   dst = ~src

BPF_NEG   0x80   dst = -src

BPF_MOD   0x90   dst = (src != 0) ? (dst % src) : dst

BPF_XOR   0xa0   dst ^= src

BPF_MOV   0xb0   dst = src