[Cake] [PATCH net-next] sched: sch_cake: Align QoS treatment to Windows and Zoom

[Sebastian Moeller]

Hi Dave,

> On 10. Jan 2025, at 20:43, Dave Taht <dave.taht at gmail.com> wrote:
> 
> ok, I concede on NQB. Do we at least have agreement that CS5 belongs
> in the VI queue, not the VO queue, on diffserv4?

As I said, I have less issues with bumping things down than up (but I am also just voicing my opinion here, thanks for discussing, I am fine ending up in the "rough" here).

About Zoom (h++ps://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0066617):
"The default Zoom DSCP marking values are 56 for audio, 40 for video, and 40 for screen sharing. You can update audio and video values to allow a network administrator to adjust the priority for Zoom traffic on their network."

That 56 is CS7 for audio which I am pretty sure will not pass most of the internet (I believe the IETF recommends to drop CS7 on ingress from other ASs)... either they wanted to write 46 (EF) or they are just as confused as the WiFi WMM folks...





> 
> On Fri, Jan 10, 2025 at 9:43 AM Jonathan Morton <chromatix99 at gmail.com> wrote:
>> 
>>> On 10 Jan, 2025, at 7:07 pm, Dave Taht via Cake <cake at lists.bufferbloat.net> wrote:
>>> 
>>> I do not think NQB belongs in Voice (which shares priority with
>>> netcontrol, etc). I also do not think it belongs in best effort as the
>>> intent is to get a quick response to a short flow. yes, FQ solves a
>>> lot of problems, but
>> 
>> As far as I'm concerned, FQ implements everything that NQB wants.  In a system implementing FQ, treating NQB traffic as best-effort is the Right Thing.
>> 
>> And I second the notion that slavishly copying wthe broken default behaviour of WiFi routers is the Wrong Thing.
>> 
>> - Jonathan Morton
>> 
> 
> 
> -- 
> Dave Täht CSO, LibreQos