On 12/15/2016 12:07 PM, Jason Gunthorpe wrote:
> On Thu, Dec 15, 2016 at 11:28:06AM -0500, Doug Ledford wrote:
>
>> 1) Since your intent is to make this work with multiple versions of the
>> hfi drivers, I disagree with Jason that just because there is only one
>> driver today that we should keep it simple. Design it right from the
>> beginning of multi driver is your intent is, IMO, a better way to go.
>> You'll work out the bugs in the initial implementation and when it comes
>> time to add the second driver, things will go much more smoothly.
>
> If that is your position then this should be a straight up IB ULP that
> works with any IB hardware.
Yes, see my comments in point #3 of my previous email...
> There is nothing HFI specific about it except for the
> micro-optimization of pushing packets via SDMA instead of post_send,
> and that same micro optimization probably applies to ipoib.
>
> In other words, lets see the first version as a straight ULP with no
> special HFI hooks, then we can discuss how best to micro optimize it
> for HFI SDMA.
>
> Jason
>
--
Doug Ledford <dledford@xxxxxxxxxx>
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