Commit 58d8a3fc authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Alexei Starovoitov
Browse files

bpf, docs: Fully document the JMP mode modifiers 



Add a description for all the modifiers.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20220103183556.41040-7-hch@lst.de
parent 9e533e22

Documentation/bpf/instruction-set.rst

+6 −6
Original line number Diff line number Diff line
@@ -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::