bpf: move {prev_,}insn_idx into verifier env

Browse source

[ commit c08435ec7f upstream ]

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>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Daniel Borkmann 2019-01-28 21:23:21 +01:00 • committed by Greg Kroah-Hartman

parent ecb4e06baf

commit 629b8af182

2 changed files with 39 additions and 37 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

2

include/linux/bpf_verifier.h

View file

74

kernel/bpf/verifier.c

View file