[openib-general] [PATCH] Add support for querying port width/speed

[Roland Dreier]

By, the way does anyone know what IPD is supposed to be used when the
injection port's rate is not a multiple of the rate for the path?  For
example, suppose an 8X DDR port is sending to a 12X path -- 12 doesn't
divide 16 evenly.

I would guess that the correct thing to do is round up, so 8X DDR
-> 12X uses an IPD of 1, 8X QDR -> 12X uses an IPD of 2, etc.

 - R.