On Mon, Jul 31, 2017 at 1:04 PM, Yuchung Cheng [off-list ref] wrote:

by the time these devices use 4.12 kernels they are likely powerful
enough to make header prediction irrelevant...

Also note that TCP stack complexity has increased a lot, I seriously
doubt anyone could notice any difference.

On small devices, the major cost is the wakeup of the cpu to process
one frame before going back to idle...