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| author | Yuchung Cheng <ycheng@google.com> | 2017-08-01 23:22:32 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-08-02 20:51:07 +0300 |
| commit | ed254971edea92c3ac5c67c6a05247a92aa6075e (patch) | |
| tree | 06c4b0d9564476c2ba90bdfb19b171a5cdf17bb1 /tools/perf/scripts/python/syscall-counts.py | |
| parent | 4d96f12a072c669d48dc3a2c6b539a9faeca138d (diff) | |
| download | linux-ed254971edea92c3ac5c67c6a05247a92aa6075e.tar.xz | |
tcp: avoid setting cwnd to invalid ssthresh after cwnd reduction states
If the sender switches the congestion control during ECN-triggered
cwnd-reduction state (CA_CWR), upon exiting recovery cwnd is set to
the ssthresh value calculated by the previous congestion control. If
the previous congestion control is BBR that always keep ssthresh
to TCP_INIFINITE_SSTHRESH, cwnd ends up being infinite. The safe
step is to avoid assigning invalid ssthresh value when recovery ends.
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions