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Differential D26808

TCP Cubic: improve reaction to (and rollback from) RTO
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Authored by chengc_netapp.com on Oct 15 2020, 8:54 PM.

Details

Reviewers
rscheff
tuexen
rgrimes
rrs
Group Reviewers
NetApp
transport
Commits
rS367753: MFC r367008: TCP Cubic: improve reaction to (and rollback from) RTO
rS367008: TCP Cubic: improve reaction to (and rollback from) RTO
Summary
  1. fix compliancy issue of CUBIC RTO handling according to RFC8312 section 4.7
  2. add CUBIC CC_RTO_ERR handling

This is the second patch of two consecutive patches on CUBIC to improve
reaction to (and rollback from) RTO.

Test Plan

Performed multiple unit tests and inspected the evolution of the cubic-internal
state across packet RTO/RTO_ERR scenarios, by using Emulab.net.

Diff Detail

Repository
rS FreeBSD src repository
Lint
Automatic diff as part of commit; lint not applicable.
Unit
Automatic diff as part of commit; unit tests not applicable.

Revision Contents
Changeset List

PathSize
head/
sys/
netinet/
cc/
70 lines

Diff 78702

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head/sys/netinet/cc/cc_cubic.c

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