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| author | Daniel Borkmann <daniel@iogearbox.net> | 2018-01-20 03:24:37 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2018-01-20 05:37:00 +0300 |
| commit | 1728a4f2ad6840746a6b1b9f01d652c5842f7e8d (patch) | |
| tree | f94d94db60f1bd595fc080694f8660566eeaf28b /net/core | |
| parent | 4bd95f4b99e921f51783bfddcd9738e9d3eef2b5 (diff) | |
| download | linux-1728a4f2ad6840746a6b1b9f01d652c5842f7e8d.tar.xz | |
bpf: move event_output to const_size_or_zero for xdp/skb as well
Similar rationale as in a60dd35d2e39 ("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>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/filter.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/core/filter.c b/net/core/filter.c index e5178851536f..9b9b70dee208 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -2861,7 +2861,7 @@ static const struct bpf_func_proto bpf_skb_event_output_proto = { .arg2_type = ARG_CONST_MAP_PTR, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_PTR_TO_MEM, - .arg5_type = ARG_CONST_SIZE, + .arg5_type = ARG_CONST_SIZE_OR_ZERO, }; static unsigned short bpf_tunnel_key_af(u64 flags) @@ -3150,7 +3150,7 @@ static const struct bpf_func_proto bpf_xdp_event_output_proto = { .arg2_type = ARG_CONST_MAP_PTR, .arg3_type = ARG_ANYTHING, .arg4_type = ARG_PTR_TO_MEM, - .arg5_type = ARG_CONST_SIZE, + .arg5_type = ARG_CONST_SIZE_OR_ZERO, }; BPF_CALL_1(bpf_get_socket_cookie, struct sk_buff *, skb) |