Bug 1851535

Summary:	Disable conntrack for GENEVE packets
Product:	OpenShift Container Platform	Reporter:	Dan Williams <dcbw>
Component:	Networking	Assignee:	mcambria <mcambria>
Networking sub component:	ovn-kubernetes	QA Contact:	Ross Brattain <rbrattai>
Status:	CLOSED ERRATA	Docs Contact:
Severity:	high
Priority:	high	CC:	aconstan, rkhan, vpunj
Version:	4.5
Target Milestone:	---
Target Release:	4.6.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:
Clones:	1859374 (view as bug list)		Environment:
Last Closed:	2020-10-27 16:09:46 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1859374

Description Dan Williams 2020-06-26 21:02:19 UTC

Disabling conntrack for GENEVE increases throughput by 5-10% per our OVN datapath testing.

$ iptables -t raw -A PREROUTING -p udp --dport 6081 -j NOTRACK
$ iptables -t raw -A OUTPUT -p udp --dport 6081 -j NOTRACK

Comment 5 Ross Brattain 2020-07-27 18:15:55 UTC

Verified on 4.6.0-0.nightly-2020-07-25-091217

iptables-raw-compute.internal
5:-A PREROUTING -p udp -m udp --dport 6081 -j NOTRACK
6:-A OUTPUT -p udp -m udp --dport 6081 -j NOTRACK

Comment 7 errata-xmlrpc 2020-10-27 16:09:46 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (OpenShift Container Platform 4.6 GA Images), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:4196