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[rack] TLP: ACK Processing and PTO scheduling.

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This change implements TLP details enumerated in
https://tools.ietf.org/html/draft-ietf-tcpm-rack-08#section-7.5.3

Fixes #5085

PiperOrigin-RevId: 357125037
This commit is contained in:
Ayush Ranjan
2021-02-11 22:06:09 -08:00
committed by gVisor bot
parent 34614c3986
commit 845d0a65f4
7 changed files with 367 additions and 49 deletions
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pkg/sentry/socket/netstack/netstack.go
+1
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@@ -222,6 +222,7 @@ var Metrics = tcpip.Stats{
Retransmits: mustCreateMetric("/netstack/tcp/retransmits", "Number of TCP segments retransmitted."),
FastRecovery: mustCreateMetric("/netstack/tcp/fast_recovery", "Number of times fast recovery was used to recover from packet loss."),
SACKRecovery: mustCreateMetric("/netstack/tcp/sack_recovery", "Number of times SACK recovery was used to recover from packet loss."),
TLPRecovery: mustCreateMetric("/netstack/tcp/tlp_recovery", "Number of times tail loss probe triggers recovery from tail loss."),
SlowStartRetransmits: mustCreateMetric("/netstack/tcp/slow_start_retransmits", "Number of segments retransmitted in slow start mode."),
FastRetransmit: mustCreateMetric("/netstack/tcp/fast_retransmit", "Number of TCP segments which were fast retransmitted."),
Timeouts: mustCreateMetric("/netstack/tcp/timeouts", "Number of times RTO expired."),