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Date: Wed, 10 Dec 2014 17:09:30 -0500
From: John Jasen <jjasen@gmail.com>
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To: FreeBSD Net <freebsd-net@freebsd.org>
Subject: netmap versus routing/firewalling and confusion
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Is there a complete idiot's guide to netmap, that I've not stumbled upon
as of yet?

I'm interested in trying to cook up a router/firewall leveraging netmap,
but I'm stuck as to how to use it.

For example, the cards I'm using, Chelsio 40GbE adapters, create
ncxl$number virtual interfaces when netmap is compiled into the kernel,
but these appear to only make things easier when using netmap-enabled
code (such as pkt-gen).

I've read some of the postings and papers on netmap and vale, especially
interesting in netmap-ipfw, but I get lost in the examples using vale.

IE: it seems I can use vale to create virtual ethernet devices, but I've
not figured out how to attach physical ones to it.

Any pointers, or free gifts of clue kindly appreciated.