netdev - WAN device configuration, again...

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Date:	Wed, 28 Oct 2009 14:28:51 +0100
From:	Krzysztof Halasa <khc@...waw.pl>
To:	<netdev@...r.kernel.org>
Subject: WAN device configuration, again...

Hi,

I'm currently at final stages of "producing" two WAN drivers and there
is one thing to solve: they have really complex options. It's no longer
a V.35 with ca. 4 clock modes, a clock rate and few encodings etc. They
need many options unique to each driver/board. I think I need a more
capable interface to configure the devices than the current ioctl-based
one.

I think of something:
- using netlink or similar interface
- with potentially unlimited "payload" size (data may be transfered in
  smaller packets)
- the "command" and "response" should be variable-length ASCII-based,
  instead of fixed structures. This way I don't have to duplicate all
  option handling in userspace, only the specific driver has to know
  about them.

Comments? Perhaps there is already an example?
Should I use something else?

I also thought about using /sys read/write calls, but I'm not sure it's
a good idea.
-- 
Krzysztof Halasa
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