[Cake] [PATCH net-next v12 3/7] sch_cake: Add optional ACK filter

[Cong Wang]

On Thu, May 17, 2018 at 4:23 AM, Toke Høiland-Jørgensen <toke at toke.dk> wrote:
> Eric Dumazet <eric.dumazet at gmail.com> writes:
>
>> On 05/16/2018 01:29 PM, Toke Høiland-Jørgensen wrote:
>>> The ACK filter is an optional feature of CAKE which is designed to improve
>>> performance on links with very asymmetrical rate limits. On such links
>>> (which are unfortunately quite prevalent, especially for DSL and cable
>>> subscribers), the downstream throughput can be limited by the number of
>>> ACKs capable of being transmitted in the *upstream* direction.
>>>
>>
>> ...
>>
>>>
>>> Signed-off-by: Toke Høiland-Jørgensen <toke at toke.dk>
>>> ---
>>>  net/sched/sch_cake.c |  260 ++++++++++++++++++++++++++++++++++++++++++++++++++
>>>  1 file changed, 258 insertions(+), 2 deletions(-)
>>>
>>>
>>
>> I have decided to implement ACK compression in TCP stack itself.
>
> Awesome! Will look forward to seeing that!

+1

It is really odd to put into a TC qdisc, TCP stack is a much better
place.