> The ICRC isn't even necessary from a technical sense for DCE. The
> underlying reasons for the ICRC/VCRC split are not really present for
> ethernet. Considering RDMAoE isn't interoperable with existing IB anyhow
> and DCE can't do routing, the best course would be to just get rid of
> it e
> Of course we need to interoperate with ConnectX-en and it, as far as I know,
> only knows how to compute the VCRC as though the packet was going to get
> sent to IB including a phantom 12 byte LRH that is filled with 1's without
> any way to turn it off. It is also a requirement that UD work
On Thu, Dec 17, 2009 at 05:00:26PM -0600, Robert Pearson wrote:
> Of course we need to interoperate with ConnectX-en and it, as far as I know,
> only knows how to compute the VCRC as though the packet was going to get
> sent to IB including a phantom 12 byte LRH that is filled with 1's without
> an
To: 'Jason Gunthorpe'
Cc: 'Roland Dreier'; 'frank zago'; 'linux-rdma@vger.kernel.org'; 'John
Groves'
Subject: RE: [Announce] rxe dev tree available (soft RDMAoE)
Of course we need to interoperate with ConnectX-en and it, as far as I know,
only know
stream then we would only use those kernels.
-Original Message-
From: Roland Dreier [mailto:rdre...@cisco.com]
Sent: Thursday, December 17, 2009 3:26 PM
To: Robert Pearson
Cc: 'Jason Gunthorpe'; 'frank zago'; linux-rdma@vger.kernel.org; 'John
Groves'
and Dreier'; 'frank zago'; linux-rdma@vger.kernel.org; 'John Groves'
Subject: Re: [Announce] rxe dev tree available (soft RDMAoE)
On Thu, Dec 17, 2009 at 03:43:56PM -0600, Robert Pearson wrote:
> I agree about the polynomial. That would have been nice. As currently
> prop
On Thu, Dec 17, 2009 at 03:43:56PM -0600, Robert Pearson wrote:
> I agree about the polynomial. That would have been nice. As currently
> proposed the embedding of the IB transport in Ethernet frames preserves the
> IB ICRC as part of the transport and trades the VCRC for Ethernet's CRC32
> over th
> We have thought that we could try CRC32C first and if that works then use
> that, otherwise fall back to CRC32 which would allow rxe to use CRC32C when
> talking to itself and get a speedup on new Intel CPUs.
How would you negotiate that? Is this being worked in the definition of
the IBoE s
stable. We will keep the warn and error messages.
Bob
-Original Message-
From: Roland Dreier [mailto:rdre...@cisco.com]
Sent: Thursday, December 17, 2009 3:26 PM
To: Robert Pearson
Cc: 'Jason Gunthorpe'; 'frank zago'; linux-rdma@vger.kernel.org; 'John
Groves
> Yes, but later. For now it is still being actively developed and is changing
> a lot. Once it settles down we plan to convert to patches and push up
> stream.
I think you would probably be better off developing the kernel driver as
a branch in an up-to-date kernel tree, and then worrying abo
, 2009 5:53 PM
To: Sean Hefty
Cc: 'Robert Pearson'; 'Jason Gunthorpe'; 'frank zago';
linux-rdma@vger.kernel.org; 'John Groves'
Subject: Re: [Announce] rxe dev tree available (soft RDMAoE)
> Is there any commonality that can be shared between rxe and t
On Wed, 16 Dec 2009, Roland Dreier wrote:
|
| > Is there any commonality that can be shared between rxe and the qlogic
driver?
|
| Interesting to note that according to ohcount, rxe is 9591 non-blank
| non-comment lines of kernel code, while qib is 36957 lines. So the
| complexity of IB trans
"Woodruff wrote:
> What is soft RDMA over ethernet, does this mean it is RDMAoE that will run
> over
> any ethernet interface that is installed in the system ?
>
That's correct. Currently for every ethX interface present, it creates a
corresponding rxeX device. These rxeX devices behaves
What is soft RDMA over ethernet, does this mean it is RDMAoE that will run over
any ethernet interface that is installed in the system ?
woody
-Original Message-
From: linux-rdma-ow...@vger.kernel.org
[mailto:linux-rdma-ow...@vger.kernel.org] On Behalf Of frank zago
Sent: Wednesday, De
> Is there any commonality that can be shared between rxe and the qlogic
> driver?
Interesting to note that according to ohcount, rxe is 9591 non-blank
non-comment lines of kernel code, while qib is 36957 lines. So the
complexity of IB transport is a small part of the complexity of qib.
- R
2009 4:20 PM
To: 'Robert Pearson'; 'Jason Gunthorpe'; 'frank zago'
Cc: linux-rdma@vger.kernel.org; 'John Groves'
Subject: RE: [Announce] rxe dev tree available (soft RDMAoE)
>Yes, but later. For now it is still being actively developed and is
changing
>a
>Yes, but later. For now it is still being actively developed and is changing
>a lot. Once it settles down we plan to convert to patches and push up
>stream.
Is there any commonality that can be shared between rxe and the qlogic driver?
--
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, 2009 3:38 PM
To: frank zago
Cc: linux-rdma@vger.kernel.org; Bob Pearson; John Groves
Subject: Re: [Announce] rxe dev tree available (soft RDMAoE)
On Wed, Dec 16, 2009 at 03:06:37PM -0600, frank zago wrote:
> Hello,
>
> The development tree for a soft RDMA transport over Ethernet driver
&
On Wed, Dec 16, 2009 at 03:06:37PM -0600, frank zago wrote:
> Hello,
>
> The development tree for a soft RDMA transport over Ethernet driver
> (rxe) is available in the OFA git repository. This is a work in progress
> but has enough functionality for people interested in looking at it to
> be
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