bpf: move {prev_,}insn_idx into verifier env

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Move prev_insn_idx and insn_idx from the do_check() function into
the verifier environment, so they can be read inside the various
helper functions for handling the instructions. It's easier to put
this into the environment rather than changing all call-sites only
to pass it along. insn_idx is useful in particular since this later
on allows to hold state in env->insn_aux_data[env->insn_idx].

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Daniel Borkmann 2019-01-03 00:58:27 +01:00 • committed by Alexei Starovoitov

parent 8b6b25cf93

commit c08435ec7f

2 changed files with 40 additions and 38 deletions

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2

include/linux/bpf_verifier.h

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76

kernel/bpf/verifier.c

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