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. 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
