[Cake] Upstream submission of dual-mode fairness patch

[Jonathan Morton]

> On 3 Mar, 2019, at 11:53 am, Sebastian Moeller <moeller0 at gmx.de> wrote:
> 
> Doesn't this look like ingress magic being applied selectively to the users based on number of flows? I thought that the idea behind the ingress keyword is to effectively shape harder the more bulk flows are coming in. 

No, it simply counts dropped packets against the shaper, as well as those actually transmitted.  There shouldn't be that many packets being dropped to make this much of a difference.

 - Jonathan Morton