On 06/11/2015 07:11 AM, Eric Dumazet wrote:
From: Eric Dumazet <eduma...@google.com>
dctcp_alpha can be read by from dctcp_get_info() without
synchro, so use WRITE_ONCE() to prevent compiler from using
dctcp_alpha as a temporary variable.
Also, playing with small dctcp_shift_g (like 1), can expose
an overflow with 32bit values shifted 9 times before divide.
Use an u64 field to avoid this problem, and perform the divide
only if acked_bytes_ecn is not zero.
Signed-off-by: Eric Dumazet <eduma...@google.com>
Change looks correct to me, thanks Eric!
Acked-by: Daniel Borkmann <dan...@iogearbox.net>
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