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bpf, docs: Fully document the JMP mode modifiers

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Add a description for all the modifiers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20220103183556.41040-7-hch@lst.de
This commit is contained in:
Christoph Hellwig 2022-01-03 19:35:56 +01:00 committed by Alexei Starovoitov
parent 9e533e22b5
commit 58d8a3fc4a
1 changed files with 6 additions and 6 deletions
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Documentation/bpf/instruction-set.rst
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@ -173,15 +173,15 @@ The size modifier is one of:
The mode modifier is one of:
============= ===== =====================
============= ===== ====================================
mode modifier value description
============= ===== =====================
============= ===== ====================================
BPF_IMM 0x00 used for 64-bit mov
BPF_ABS 0x20
BPF_IND 0x40
BPF_MEM 0x60
BPF_ABS 0x20 legacy BPF packet access
BPF_IND 0x40 legacy BPF packet access
BPF_MEM 0x60 all normal load and store operations
BPF_ATOMIC 0xc0 atomic operations
============= ===== =====================
============= ===== ====================================
BPF_MEM | <size> | BPF_STX means::