On Fri, Oct 6, 2023 at 6:25 PM Jakub Kicinski [off-list ref] wrote:

On Fri, 6 Oct 2023 15:06:45 -0400 Jamal Hadi Salim wrote:

quoted

quoted

I don't understand the need for configuration less here. You don't have
it for the rest of the actions. Why this is special?

+1, FWIW

We dont have any rule that says all actions MUST have parameters ;->
There is nothing speacial about any action that doesnt have a
parameter.

quoted

It is not needed really. Think of an L2 switch - the broadcast action
is to send to all ports but self.

We do have an implementation of an L2 switch already, what's the use
case which necessitates this new action / functionality?

It is not an L2 switch - the L2 example switch was what came to mind
of something that does a broadcast (it doesnt depend on MAC addresses
for example). Could have called it a hub. Ex: you could match on many
different header fields or skb metadata, then first modify the packet
using NAT, etc and then "blockcast" it.

cheers,
jamal