bpf: move event_output to const_size_or_zero for xdp/skb as well

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Similar rationale as in a60dd35d2e ("bpf: change bpf_perf_event_output
arg5 type to ARG_CONST_SIZE_OR_ZERO"), change the type to CONST_SIZE_OR_ZERO
such that we can better deal with optimized code. No changes needed in
bpf_event_output() as it can also deal with 0 size entirely (e.g. as only
wake-up signal with empty frame in perf RB, or packet dumps w/o meta data
as another such possibility).

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 2018-01-20 01:24:37 +01:00 • committed by Alexei Starovoitov

parent 4bd95f4b99

commit 1728a4f2ad

1 changed files with 2 additions and 2 deletions

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net/core/filter.c

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