RockerPort member @speed is documented to be "in Mbps" (presumably Megabits/second). It uses QAPI type 'uint32'.
This is inappropriate for QAPI/QMP. It should have been made plain bits/second (no multiple), and maybe 'uint64'. As far as I can tell, the QAPI part didn't get review from QAPI experts. Probably because it wasn't cc'ed to them. Too late to fix now, but let's not repeat the mistake.
