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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 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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