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tcp_cubic: fix spurious HYSTART_DELAY on RTT decrease
This series fixes a long-standing bug in the TCP CUBIC
HYSTART_DELAY mechanim recently reported by Mirja Kuehlewind. The
code can cause a spurious exit of slow start in some particular
cases: upon an RTT decrease that happens on the 9th or later ACK
in a round trip. This series fixes the original Hystart code and
also the recent BPF implementation.
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Signed-off-by: David S. Miller <davem@davemloft.net>
projects / kernel.git / commit