linux-kernel - hdlc_ppp: why no detach()?

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Date:	Mon, 12 Apr 2010 10:15:28 -0400
From:	Michael Barkowski <michaelbarkowski@...gedcom.com>
To:	Krzysztof Halasa <khc@...waw.pl>
CC:	"David S. Miller" <davem@...emloft.net>,
	Julia Lawall <julia@...u.dk>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: hdlc_ppp: why no detach()?

Hello Krzyztof,

I am looking at your hdlc_ppp code and I don't understand: why is there
not the equivalent of fr_detach() in there?

pc8300_drv:cpc_remove_one() frees netdevs quite confidently but I wonder
how it can be so sure that there are not skbs in hdlc_ppp's tx_queue
associated with those devices before freeing them....

Even if you wanted to switch a device from PPP to Frame Relay, I don't
see the method right now.  If I may ask, please, what am I missing?

If you agree there is a need for detach(), I would be happy to work on
it and make a submission.

thanks for your time,

-- 
Michael Barkowski
RuggedCom, Inc.

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