XEN Host (Dom 0) using igb.ko driver will drop XEN guest (Dom U) packets when IPv4 TX checksum offload is enabled

This document (7003448) is provided subject to the disclaimer at the end of this document.

Environment

SUSE Linux Enterprise Server 10 Service Pack 2

Situation

XEN Host (Dom 0) will corrupt XEN Guest (Dom U) network traffic during transmission to and from the physical interface under the following conditions:

1) XEN Host (Dom 0) is SLES 10 SP2 operating system.

2) The default SLES 10 SP2 Intel igb.ko driver is being used on the XEN Host (Dom 0).

3) IPv4 TX checksum is enabled on the XEN Guests (Dom U).

4) XEN Guests (Dom U) are using optimized paravirtualized NIC drivers.

Resolution

Later versions of the igb driver will resolve the issue. An updated version of the igb driver has been compiled for SLES 10 SP2 to resolve the issue. This driver can be downloaded from:

http://forgeftp.novell.com/driver-process/staging/pub/update/intel/sle10sp2/common/x86_64/

The filenames are:

intel-igb-1.3.19.3-1.src.rpm
intel-igb-1.3.19.3-1.x86_64.rpm
intel-igb-kmp-xen-1.3.19.3_2.6.16.60_0.21-1.x86_64.rpm

Bug Number

495637

Additional Information

http://sourceforge.net/mailarchive/message.php?msg_name=36D9DB17C6DE9E40B059440DB8D95F5204954A14%40orsmsx418.amr.corp.intel.com

Disclaimer

This Support Knowledgebase provides a valuable tool for NetIQ/Novell/SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

Document ID:7003448
Creation Date:04-JUN-09
Modified Date:27-APR-12
- SUSESUSE Linux Enterprise Server

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