bpf: interpreter support BPF_ALU | BPF_ARSH

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This patch implements interpreting BPF_ALU | BPF_ARSH. Do arithmetic right
shift on low 32-bit sub-register, and zero the high 32 bits.

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 2018-12-05 13:52:34 -05:00 • committed by Alexei Starovoitov

parent 84708c1386

commit 2dc6b100f9

1 changed files with 30 additions and 22 deletions

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kernel/bpf/core.c

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