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| author | Nayana Bidari <nybidari@google.com> | 2020-12-16 12:17:02 -0800 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-12-16 12:19:21 -0800 |
| commit | 0c92b3782ae641b59d512a922f766721a34d7e9e (patch) | |
| tree | f1d9b73b267b54a9dc14693d6a2956e1b72a3ba7 /pkg/metric | |
| parent | 7da25e6dc3095378ecaf292759ef84b656a306b8 (diff) | |
Add support to count the number of packets SACKed.
sacked_out is required in RACK to check the number of duplicate
acknowledgements during updating the reorder window. If there is no reordering
and the value for sacked_out is greater than the classic threshold value 3,
then reorder window is set to zero.
It is calculated by counting the number of segments sacked in the ACK and is
reduced when a cumulative ACK is received which covers the SACK blocks. This
value is set to zero when the connection enters recovery.
PiperOrigin-RevId: 347872246
Diffstat (limited to 'pkg/metric')
0 files changed, 0 insertions, 0 deletions