New: atl1e data corruption (via NFS over TCP)

Bugme-new Andrew Morton 1 participant 1 message Jan 28, 2011 1 message not in the archive

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Andrew Morton

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2011-01-28 22:37 UTC #1 lore raw

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Quoted 43 lines · On Fri, 28 Jan 2011 09:48:13 GMT [email protected] wrote:

https://bugzilla.kernel.org/show_bug.cgi?id=27712
           Summary: atl1e data corruption (via NFS over TCP)
           Product: Drivers
           Version: 2.5
    Kernel Version: 2.6.38-rc2
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Network
        AssignedTo: [email protected]
        ReportedBy: [email protected]
        Regression: No
With the following device (very common on ASUS hardware):
Atheros AR8121/AR8113/AR8114 PCI-E Ethernet Controller
With PCI ID:
1969-1026-b0-00-1043-14f5
http://pci-ids.ucw.cz/read/PC/1969/1026
We get data corruption when transferring data via NFS over TCP, while data transfered via NFS over UDP seems to be fine.
We tested this by md5summing large files (100MB+) over NFS.
Turning off all offload features via ethool does not help either. However the RX checksum offload can't be turned off individually, but _seems_ to be turned off when the TX checksum offload is turned off.
As indicated when transferring data via UDP the problem disappears, and the md5sums are correct again.
The above would suggestion something is possibly wrong the RX checksum offload?
Is there any way to force the RX checksum offload off?