Bug 487213

Summary: [Intel 5.4 bug] ixgbe driver double counts RX byte count
Product: Red Hat Enterprise Linux 5 Reporter: John Ronciak <john.ronciak>
Component: kernelAssignee: Andy Gospodarek <agospoda>
Status: CLOSED ERRATA QA Contact: Red Hat Kernel QE team <kernel-qe>
Severity: medium Docs Contact:
Priority: urgent    
Version: 5.3CC: dhoward, dzickus, emcnabb, jane.lv, jpirko, jvillalo, keve.a.gabbert, luyu, peterm, rpacheco
Target Milestone: rcKeywords: ZStream
Target Release: 5.4   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2009-09-02 08:02:08 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:    
Bug Blocks: 480792, 489459    
Attachments:
Description Flags
ixgbe-count-frames-and-bytes-received-only-once.patch none

Description John Ronciak 2009-02-24 19:35:26 UTC 
Description of problem: With the latest 5.3/ZStream ixgbe driver the byte count shows up a 2x the real value.

How reproducible:
Always

Steps to Reproduce:
1. Just put traffic through the ixgbe driver and see the the byte count is 2x the actual value.

Andy asked me to open a new bug on this.  This should be fixed for the upcoming ZStream release.
Comment 1 Andy Gospodarek 2009-03-02 22:08:40 UTC 
Created attachment 333792 [details]
ixgbe-count-frames-and-bytes-received-only-once.patch

Completely untested, but by inspection I'm guessing this is the problem.
Comment 2 John Ronciak 2009-03-03 23:23:34 UTC 
The patch does indeed solve the problem from both visual inspection and by installing and running it.  The BZ can now be closed as fixed.  

Thanks Andy.
Comment 5 RHEL Program Management 2009-03-05 16:18:44 UTC 
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
release.
Comment 7 Don Zickus 2009-04-16 18:39:26 UTC 
in kernel-2.6.18-139.el5
You can download this test kernel from http://people.redhat.com/dzickus/el5

Please do NOT transition this bugzilla state to VERIFIED until our QE team
has sent specific instructions indicating when to do so.  However feel free
to provide a comment indicating that this fix has been verified.
Comment 14 errata-xmlrpc 2009-09-02 08:02:08 UTC 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2009-1243.html