Re: New "tc qdisc" options

[Dave Collier-Brown <dave collier-brown indexexchange com>]

On 2020-10-05 2:58 a.m., Thomas Haller wrote:
> Hi,
>
> On Sun, 2020-10-04 at 11:47 -0500, davecb spamcop net wrote:
> > I need to set tc under network manager to enable CAKE in Fedora/Red
> > Hat
> > 8/Centos 8/Ubuntu for a community of users badly affected by
> > "bufferbloat".
> > On my test machine, I can the appropriate options with tc, but it is
> > almost
> > immediately reset by Network Manager.
> How did you set the tc options?

From the command-line, below.

> > I see code in
> >
> > https://gitlab.freedesktop.org/NetworkManager/NetworkManager/blob/master/libnm-core/nm-setting-tc-config.c
> >
> > which implements setting tc qdisc, and a brief mention in
> >
> > https://developer.gnome.org/NetworkManager/stable/
> >
> > However the man pages do not mention tc.
> >
> > Can you provide a hint on setting, for example, /tc qdisc replace dev
> > enp0s25 root cake bandwidth 20mbit/ in network manager?
> "cake" is currently not supported. Until that is added, the intended
> solution is to use a dispatcher script. See `man NetworkManager`.

Alas, that's the first place I looked (:-()

Cake doesn't need to be supported in network manager, as I can work
around it's lack with fq_codel.

However, I do need to discover the location and notation interpreted by
nm-setting-tc-config.c

1) can you help me with that?

2) is adding (the name of) the cake qdisc on your backlog?

--dave


--
David Collier-Brown,         | Always do right. This will gratify
System Programmer and Author | some people and astonish the rest
dave collier-brown indexexchange com |              -- Mark Twain


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