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bpf, docs: Fix definition of BPF_NEG operation

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Instruction is an arithmetic negative, not a bitwise inverse.

Signed-off-by: Dave Thaler <dthaler@microsoft.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/bpf/20230627213912.951-1-dthaler1968@googlemail.com
This commit is contained in:
Dave Thaler 2023-06-27 21:39:12 +00:00 • committed by Daniel Borkmann
parent bbaf1ff06a
commit 85b0c6d490
1 changed files with 1 additions and 1 deletions
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Documentation/bpf/instruction-set.rst
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@ -165,7 +165,7 @@ BPF_OR 0x40 dst \|= src
BPF_AND 0x50 dst &= src BPF_AND 0x50 dst &= src
BPF_LSH 0x60 dst <<= (src & mask) BPF_LSH 0x60 dst <<= (src & mask)
BPF_RSH 0x70 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_MOD 0x90 dst = (src != 0) ? (dst % src) : dst
BPF_XOR 0xa0 dst ^= src BPF_XOR 0xa0 dst ^= src
BPF_MOV 0xb0 dst = src BPF_MOV 0xb0 dst = src