Re: [Xen-devel] RING_HAS_UNCONSUMED_REQUESTS oddness

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

> -----Original Message-----
> From: Ian Campbell
> Sent: 13 March 2014 10:03
> To: Paul Durrant
> Cc: Zoltan Kiss; Wei Liu; xen-devel@xxxxxxxxxxxxxxxxxxxx; Tim (Xen.org)
> Subject: Re: [Xen-devel] RING_HAS_UNCONSUMED_REQUESTS oddness
> 
> On Thu, 2014-03-13 at 09:26 +0000, Paul Durrant wrote:
> > guarantee that netback will always respond in order on the rx ring.
> 
> I don't believe this is guaranteed byt the protocol, even if it happens
> to work out that way for the Linux netback implementation.
> 

Indeed it's not guaranteed by the protocol but it's the only way that 
(non-prefix) GSO can possibly work, which is why I think something really needs 
to be documented.

  Paul
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