[Cake] [PATCH net-next 1/5] sch_cake: fix IP protocol handling in the presence of VLAN tags

Jonathan Morton chromatix99 at gmail.com
Fri Jun 26 12:36:04 EDT 2020

> On 26 Jun, 2020, at 5:59 pm, Sebastian Moeller <moeller0 at gmx.de> wrote:
> thinking this over, I wonder whether a hypothetical carrier grade cake, might not actually grow a classify-by-vlan-priority keyword to allow switching over to using VLAN priority tags instead of dscps? That would avoid tempting carriers to re-map deeep-encapsulated dscps if they can just ignore them for good. And it scratches my pet itch, that 3 bits of classification should be enough for >80 % of the cases ;)
> What do you think?

If carriers could use Ethernet VLANs for internal purposes instead of DSCPs, I would count that as progress towards allowing DSCPs to carry end-to-end information.  And if there's a desire for a software qdisc which fits that paradigm, then we can do a requirements analysis which might well lead to something useful being developed.

But that isn't going to be Cake.  It'll be a different qdisc which might share some features and technology with Cake, but definitely arranged in a different order and with a different focus.

 - Jonathan Morton

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