Merge branch 'tcp_cubic-fix-spurious-HYSTART_DELAY-on-RTT-decrease'

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Neal Cardwell says:

====================
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.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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David S. Miller 2020-06-25 16:08:47 -07:00

parent 29a30bac56 7d21d54d62

commit 3b0e7dc0be

2 changed files with 4 additions and 6 deletions

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5

net/ipv4/tcp_cubic.c

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5

tools/testing/selftests/bpf/progs/bpf_cubic.c

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