[Click] Accessing the ingress interface of a packet

[Pekka Nikander]

A typical way of doing that is to Paint the packet soon after receiving it from the interface, before muxing it with other traffic.  You can the use a PaintSwitch to demux it according to the interface it came through.

--Pekka

On 2011-01 -01, at 22:26 , Philip Prindeville wrote:

> (Forgive the newbie questions... I'm having to learn Click in a hurry as I ramp up on a project.)
> 
> Is there a built-in element that returns the ingress interface of a packet?
> 
> I'm trying to write an elementclass in Click that modifies a packet and then sends it back out the same interface it came in on, but don't want to have one instance of it per-interface that it is used on.
> 
> Thanks.
> 
> -Philip
> 
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