I hope this helps everyone. -------- Original Message --------Subject: Network issue on servers containing BCM 5709 / 5716 cards resolved -
Date: Tue, 25 May 2010 23:10:44 +0530 From: <[email protected]> To: <[email protected]>
Hello, Connectivity loss was observed under some heavy traffic conditions on RHEL 5.3/5.4/5.5 on servers containing BCM 5709/5716 cards. Work around: The issue is MSI-X specific. So passing "disable_msi=1" to the bnx2 driver would prevent the issue from happening. Root cause details and fix: The card was dropping the PCI writes issued to clear the mask bit in the MSI-X vector control field as part of MSI-X handling. As a result, the vector was lost and all the traffic associated with this vector would be dropped. This is fixed by increasing the GRC timeout value for the PCI read/writes by setting a bit in the card's register. Upstream fix: Please find the upstream fix to this issue at this link - http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commi t;h=c441b8d2cb2194b05550a558d6d95d8944e56a84 Kbase Link - http://kbase.redhat.com/faq/docs/DOC-26837 (Does not contain the details about the fix) RHEL update containing this fix - The RHEL 5.5 errata kernel, kernel-2.6.18-194.3.1.el5.x86_64.rpm contains the fix for this issue. With regards, Narendra K Linux Engineering _______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq -- << MCT>> Michael C Tiernan. xmpp:[email protected] MIT - Laboratory for Nuclear Science - http://www.lns.mit.edu High Perf Research Computing Facility at The Bates Linear Accelerator "Bit-smashing your bits better than anyone can!"
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