On Sun, Nov 11, 2018 at 12:11 PM Eric Dumazet <eduma...@google.com> wrote:
>
> Similar to 80ba92fa1a92 ("codel: add ce_threshold attribute")
>
> After EDT adoption, it became easier to implement DCTCP-like CE marking.
>
> In many cases, queues are not building in the network fabric but on
> the hosts themselves.
>
> If packets leaving fq missed their Earliest Departure Time by XXX usec,
> we mark them with ECN CE. This gives a feedback (after one RTT) to
> the sender to slow down and find better operating mode.
>
> Example :
>
> tc qd replace dev eth0 root fq ce_threshold 2.5ms
>
> Signed-off-by: Eric Dumazet <eduma...@google.com>
> ---Very nice! Thanks, Eric. :-) Acked-by: Neal Cardwell <ncardw...@google.com> neal
