From: Jarek Poplawski <redacted>
Date: Fri, 27 Feb 2009 08:41:10 +0000

Probably I miss something, but I'm not sure it's really necessary in
all (non-VLAN) entry points. Of course it's an optimization to drop
these things early, but there is a lot off mess with replicating
various parts of netif_receive_skb() in so many places.

As a matter of fact, I wonder why it can't be done in one place, e.g.
netif_nit_deliver(), which was created partly for similar problems.

I think we do need to hit all possible entry points.

How would you be able to handle it in netif_nit_deliver()?
Functions like netif_receive_skb() open-code the delivery to
network taps, they don't actually call netif_receive_skb().