netdev - Re: [PATCH] SIW: Module initialization

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Message-ID: <20101005162426.GB5967@obsidianresearch.com>
Date:	Tue, 5 Oct 2010 10:24:26 -0600
From:	Jason Gunthorpe <jgunthorpe@...idianresearch.com>
To:	Bernard Metzler <BMT@...ich.ibm.com>
Cc:	Bart Van Assche <bvanassche@....org>, bart.vanassche@...il.com,
	linux-rdma@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH] SIW: Module initialization

On Tue, Oct 05, 2010 at 03:12:48PM +0200, Bernard Metzler wrote:

> good point. do you have a suggestion here - would you like to see 
> siw to be enabled more selectively? 
> iwarp is a protocol on top of TCP, explicitly defining the 
> semantics of data fetching and placement. end-to-end connectivity 
> and efficient data shipping is provided by TCP/IP. not taking into 
> account dedicated RDMA hardware, any TCP stream may carry iwarp 
> traffic. from that point of view, binding a software based 
> rdma stack to dedicated devices is a concession to the 
> given environment, in particular to the given rdma 
> connection management. therefore, we started with binding to all 
> available network devices. 

Considering the possibility for security issues with code like this it
would be much nicer to have an 'opt in' mechanism.. Ie a
 /sys/class/net/eth0/enable_iwarp
type of file.. You can track the add/remove of netdevices weth netevents.

Jason
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