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 <dledf...@redhat.com>
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