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Date:	Sun, 10 Aug 2008 08:49:32 -0400
From:	Jeff Garzik <jgarzik@...ox.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Roland Dreier <rdreier@...co.com>,
	Steve Wise <swise@...ngridcomputing.com>, davem@...emloft.net,
	Divy Le Ray <divy@...lsio.com>, Karen Xie <kxie@...lsio.com>,
	netdev@...r.kernel.org, open-iscsi@...glegroups.com,
	michaelc@...wisc.edu, daisyc@...ibm.com, wenxiong@...ibm.com,
	bhua@...ibm.com, Dimitrios Michailidis <dm@...lsio.com>,
	Casey Leedom <leedom@...lsio.com>,
	linux-scsi <linux-scsi@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC][PATCH 1/1] cxgb3i: cxgb3 iSCSI initiator

Alan Cox wrote:
>>  - It doesn't work in theory, because the suggestion (I guess) is that
>>    the iSCSI HBA has its own MAC and IP and behaves like a separate
> 
> The iSCSI HBA is its own system - that is the root of the problem.

Indeed.

Just like with TOE, from the net stack's point of view, an iSCSI HBA is 
essentially a wholly asynchronous remote system [with a really fast 
communication bus like PCI Express].

As such, the task becomes updating the net stack such that 
formerly-private resources are now shared with an independent, external 
system...  with all the complexity, additional failure modes, and 
additional security complications that come along with that.

	Jeff


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