Bug 1431197

Summary: vxlan: performance can suffer unless GRO is disabled on vxlan interface [rhel-7.3.z]
Product: Red Hat Enterprise Linux 7 Reporter: Jaroslav Reznik <jreznik>
Component: kernelAssignee: Frantisek Hrbata <fhrbata>
kernel sub component: Tunnel QA Contact: Jan Tluka <jtluka>
Status: CLOSED ERRATA Docs Contact: Marie Hornickova <mdolezel>
Severity: urgent    
Priority: urgent CC: atragler, brault, cye, dhoward, fbaudin, hsowa, jbenc, jeharris, jiji, kernel-eus-qe, mleitner, mmilgram, network-qe, pablo.iranzo, pneedle, ptalbert, qding, rmanes
Version: 7.3Keywords: ZStream
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: kernel-3.10.0-514.20.1.el7 Doc Type: Bug Fix
Doc Text:
When a VXLAN or Geneve tunnel between two Red Hat Enterprise Linux 7.3 hosts was used and Generic Receive Offload (GRO) was enabled with Receive Side Scaling (RSS) configured to include UDP ports (ethtool -U eth0 rx-flow-hash udp4sdfn), traffic flowing through the tunnel exhibited substantial packet loss. This update fixes the underlying source code of the IP tunnel. As a result, the system performance has been improved and the packet loss no longer occurs under the described circumstances.
Story Points: ---
Clone Of: 1424076 Environment:
Last Closed: 2017-05-25 15:42:26 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: 1424076    
Bug Blocks: 1427491    

Description Jaroslav Reznik 2017-03-10 15:05:48 UTC
This bug has been copied from bug #1424076 and has been proposed
to be backported to 7.3 z-stream (EUS).

Comment 9 errata-xmlrpc 2017-05-25 15:42:26 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, 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/RHSA-2017:1308