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[Xen-devel] [PATCH RFC] xen/netback: Count ring slots properly when larger MTU sizes are used

  • To: "xen-devel@xxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxx>
  • From: "Palagummi, Siva" <Siva.Palagummi@xxxxxx>
  • Date: Mon, 13 Aug 2012 00:12:56 +0000
  • Accept-language: en-US
  • Delivery-date: Mon, 13 Aug 2012 00:13:53 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xen.org>
  • Thread-index: Ac146Cc2rIyVmg4PT4CbrdsCnnwOsQ==
  • Thread-topic: [PATCH RFC] xen/netback: Count ring slots properly when larger MTU sizes are used

Hi,

 

I ran into an issue where netback driver is crashing with BUG_ON(npo.meta_prod > ARRAY_SIZE(netbk->meta)). It is happening in Intel 10Gbps network when larger mtu values  are used. The problem seems to be  the way the slots are counted. After applying this patch things ran fine in my environment. I request to validate my changes.

 

Thanks

Siva

 

Attachment: netback_slots_counting.patch
Description: netback_slots_counting.patch

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