On 7/3/2018 1:32 PM, Jason Gunthorpe wrote:
On Mon, Jul 02, 2018 at 08:21:34AM -0700, Dennis Dalessandro wrote:
Hi Doug and Jason,
Here is the TID RDMA series I had mentioned back at OFA. This represents a lot
of hardwork by a number of people. I asked Kaike to provide a cover letter with
some background on what TID RDMA is, I'll paste it here. We'd like this to go
for 4.19 but it is a lot of code to review so won't be surprised if it has to
push off another cycle.
Omni-Path TID RDMA Feature
Intel Omni-Path (OPA) TID RDMA support is a feature that accelerates data
movement between two OPA nodes through the IB Verbs interface. It improves
RDMA READ/WRITE performance by delivering the data payload to a user
buffer directly without any software copying.
If this is verbs based then the rdma-core patches being posted are a
pre-requisite for reviewing this.
Depending on what is in there I may tell you, again, to fix this
drivers uapi before making any changes to the uapi.
It is for verbs, but it is contained within our driver. There are no
rdma-core patches required, no uapi changes. User doesn't have to know
about this at all.
-Denny
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