[Cake] [PATCH 1/3] pkt_sched.h: add support for sch_cake API

[Marcelo Ricardo Leitner]

On Tue, Nov 21, 2017 at 04:58:54PM -0800, Dave Taht wrote:
> Stephen Hemminger <stephen at networkplumber.org> writes:
...
> > Also, when I see multiple arrays of same size. It seems the API should
> > be:
> > 	struct tc_cake_tin_stats {
> > 		__u32 threshold_rate;
> > 		__u32 target_us;
> > 		struct tc_cake_traffic_stats sent;
> > ...
> >
> > What if you want to change number of TINS, the ABI shouldn't have to change.
> 
> It is hard to imagine ever wanting more than 8 tins. Using up 3, sanely,
> has proven hard.

Which means each stats dump will almost always dump 5 empty TINS,
while if it were dynamic, it could dump only the 1, 2 or 3 in use and
probably help with the stats dump performance. Smaller slab, less
bytes to copy, ...

  Marcelo