On Mon, 15 Mar 2004 13:30:34 -0800
Stephen Hemminger <shemminger@xxxxxxxx> wrote:
> > How do you propose to support some kind of "global enable" for features.
>
> The easiest way to do that is to initialize each TP with features from
> sysctl when created.
Right.
> > I think sysctl's support this quite well. The test for the feature
> > becomes "sysctl || route_attribute".
>
> That is what the next version does for FRTO.
OK, but do not limit it to FRTO, I think all TCP features should
be handle'able this way.
Actually, this is a problem with using an RTAX_* that is a bitmask
or single binary. You need a "don't care" value, and thus effectively
a trinary route entry state to do this properly. Right?
In this way, you have a global default, but you can also FORCE something
off per-route. People can work-around ECN-fux0red sites without obviating
ECN completely.
Or perhaps you can come up with another method by which to achieve this?
> Okay, what about WESTWOOD?
...
> What about tcp_westwood which is new?
Just don't change sysctl numbers, even we keep them perfectly sync'd between
2.6.x and 2.4.x sources.
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