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bpf: add parenthesis around argument of BPF_LDST_BYTES()

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BPF_LDST_BYTES() does not put it's argument in parenthesis
when referencing it.  This makes it impossible to pass pointers
obtained by address-of operator (e.g. BPF_LDST_BYTES(&insn)).
Add the parenthesis.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Jakub Kicinski 2018-03-28 17:48:33 -07:00 committed by Alexei Starovoitov
parent bfee64deaa
commit e59ac63490
1 changed files with 1 additions and 1 deletions
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2
include/linux/filter.h
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@ -372,7 +372,7 @@ struct xdp_rxq_info;
#define BPF_LDST_BYTES(insn) \
({ \
const int __size = bpf_size_to_bytes(BPF_SIZE(insn->code)); \
const int __size = bpf_size_to_bytes(BPF_SIZE((insn)->code)); \
WARN_ON(__size < 0); \
__size; \
})