linux-kernel - Re: [PATCH] Add iSCSI IBFT support (v0.4.2)

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Date:	Fri, 21 Dec 2007 12:05:29 -0800
From:	Greg KH <greg@...ah.com>
To:	Konrad Rzeszutek <konrad@...nok.org>
Cc:	Doug Maxey <dwm@...yolf.org>, darnok@....org,
	linux-kernel@...r.kernel.org, pjones@...hat.com,
	konradr@...hat.com, konradr@...ux.vnet.ibm.com,
	randy.dunlap@...cle.com, hpa@...or.com, lenb@...nel.org,
	mike.anderson@...ibm.com, dwm@...tin.ibm.com,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: [PATCH] Add iSCSI IBFT support (v0.4.2)

On Wed, Dec 05, 2007 at 03:47:08PM -0400, Konrad Rzeszutek wrote:
> On Tue, Dec 04, 2007 at 09:12:11PM -0600, Doug Maxey wrote:
> > Overall, looks nice.  Good work.
> 
> Thank you.
> 
> > 
> > comments inline below...
> > 
> > On Tue, 04 Dec 2007 20:44:19 -0400, darnok@....org wrote:
> > > On Wed, Nov 28, 2007 at 07:34:22PM -0400, Konrad Rzeszutek wrote:
> > > >
> > > > This patch adds /sysfs/firmware/ibft/[initiator|targetX|ethernetX]
> > > > directories along with text properties which export the the iSCSI Boot
> > > > Firmware Table (iBFT) structure.
> > > >
> > > > What is iSCSI Boot Firmware Table? It is a mechanism for the iSCSI
> > > > tools to extract from the machine NICs the iSCSI connection information
> > > > so that they can automagically mount the iSCSI share/target. Currently
> > > > the iSCSI information is hard-coded in the initrd.
> > > >
> > > > For full details of the IBFT structure please take a look at:
> > > > ftp://ftp.software.ibm.com/systems/support/system_x_pdf/ibm_iscsi_boot_firmware_table_v1.02.pdf
> > >
> > > Here is an updated version which provides an attribute symlink (in the
> > > ethernetX directory) called 'device' to the NIC device, instead of
> > > exporting a 'pci_bdf' file which had the "bus:slot:func" values.
> > >
> > > Review would be much appreciated.
> 
> This next version (0.4.2) includes: much better error unrolling
> when kobject registration fails, fixes from Doug's review, and uses the
> 'kset_create_and_add' API that Greg KH posted. It has been tested on
> todays 2.6.24-rc4-gkh tree.

Looks much nicer, good job.

However I changed the kobject api again, so some minor changes will need
to happen (kobject_init() and kobject_add() parameters have changed),
and you don't need to call kobject_del() right before kobject_put().
Hm, that last one was always true, so that wasn't needed before...

Do you want me to add this to my driver/ tree and fix up the kobject
issues there so it all builds properly, and it gets sent to Linus for
2.6.25?

thanks,

greg k-h
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