nfp: bpf: complete ALU32 logic shift supports

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The following ALU32 logic shift supports are missing:

  BPF_ALU | BPF_LSH | BPF_X
  BPF_ALU | BPF_RSH | BPF_X
  BPF_ALU | BPF_RSH | BPF_K

For BPF_RSH | BPF_K, it could be implemented using NFP direct shift
instruction. For the other BPF_X shifts, NFP indirect shifts sequences need
to be used.

Separate code-gen hook is assigned to each instruction to make the
implementation clear.

Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

...

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Jiong Wang 2019-02-01 22:39:29 +00:00 • committed by Alexei Starovoitov

parent db0a4b3b6b

commit ac7a1717a2

1 changed files with 67 additions and 5 deletions

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72

drivers/net/ethernet/netronome/nfp/bpf/jit.c

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