Bug 2024911

Summary:	[4.7] pod to pod communication broken on PFCP procotol over UDP
Product:	OpenShift Container Platform	Reporter:	Christoffer Back <cback>
Component:	Networking	Assignee:	ffernand <ffernand>
Networking sub component:	ovn-kubernetes	QA Contact:	Anurag saxena <anusaxen>
Status:	CLOSED ERRATA	Docs Contact:
Severity:	urgent
Priority:	urgent	CC:	agabriel, alosadag, anbhat, anusaxen, bbennett, dcbw, djuran, fbaudin, ffernand, fpan, fpaoline, fsoppels, hchatter, mavazque, mschwabe, openshift-bugs-escalate, pabeni, pibanezr, rkhan, trozet, zzhao
Version:	4.7
Target Milestone:	---
Target Release:	4.7.z
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1939045	Environment:
Last Closed:	2021-12-08 11:03:18 UTC	Type:	---
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:	2024910
Bug Blocks:	2024914

Comment 4 ffernand 2021-11-23 19:50:02 UTC

Verified that all needed fixes are present in the latest OCP 4.7.z.
Marking this bz as MODIFIED.

The bug referenced from the kernel commit above is https://bugzilla.redhat.com/show_bug.cgi?id=1877128
which was Fixed-in-version kernel-4.18.0-254.el8.

Comment 5 ffernand 2021-11-23 21:26:12 UTC

Ooops. No, that is not right.
While the kernel version is correct, openvswitch2.13-2.13.0-124.el8fdp.x86_64 does not include the fix needed:

* Thu Nov 18 2021 Open vSwitch CI <ovs-ci> - 2.13.0-139
- Merging upstream branch-2.13 [RH git: 37c2767bbd]
    Commit list:
    057a5b0708 ofproto-dpif-xlate: Fix check_pkt_larger incomplete translation.

Since OCP is using openvswitch2.13-2.13.0-124.el8fdp.x86_64, that needs to be updated to 139 still.

Re-opening the bz. Sorry about that.

Comment 7 ffernand 2021-11-23 22:35:15 UTC

Nope; I was not wrong. :P

Since this bz does not depend on bug 1935663 , it is actually accurate to set this as MODIFIED.
openvswitch2.13-2.13.0-124.el8fdp.x86_64 includes all that is needed here.

In summary, please ignore comments 5 and 6 above. :)

Comment 8 Dan Williams 2021-11-23 23:21:27 UTC

4.7.30 is the first release with the necessary OVS (2.13-117) in the datapath.

https://openshift-release.apps.ci.l2s4.p1.openshiftapps.com/releasestream/4-stable/release/4.7.30
https://releases-rhcos-art.cloud.privileged.psi.redhat.com/diff.html?arch=x86_64&first_release=47.84.202109010857-0&first_stream=releases%2Frhcos-4.7&second_release=47.84.202109082139-0&second_stream=releases%2Frhcos-4.7

So this should actually already be fixed in latest 4.7.

Comment 12 errata-xmlrpc 2021-12-08 11:03:18 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 4.7.39 bug fix update), 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-2021:4885