[Cake] issue with Cake and bpf filter

[Jonathan Morton]

> On 22 Aug, 2018, at 12:51 pm, Pete Heist <pete at heistp.net> wrote:
> 
> "math between pkt pointer and 4294901760 is not allowed"

As a possible clue here, 4294901760 == (2^32) - (2^16).

I suspect both errors are being caused by the call to memcpy().  This potentially inlines a substantial amount of code which may not be eBPF-clean.

 - Jonathan Morton