linux-kernel - Re: [PATCH 14/14] tcm_loop: Enable DIF/DIX modes in SCSI host LLD

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Date:	Mon, 13 Jan 2014 10:45:11 -0800
From:	"Nicholas A. Bellinger" <nab@...ux-iscsi.org>
To:	"Martin K. Petersen" <martin.petersen@...cle.com>
Cc:	"Nicholas A. Bellinger" <nab@...erainc.com>,
	target-devel <target-devel@...r.kernel.org>,
	linux-scsi <linux-scsi@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Christoph Hellwig <hch@....de>, Hannes Reinecke <hare@...e.de>,
	Sagi Grimberg <sagig@...lanox.com>,
	Or Gerlitz <ogerlitz@...lanox.com>
Subject: Re: [PATCH 14/14] tcm_loop: Enable DIF/DIX modes in SCSI host LLD

On Fri, 2014-01-10 at 16:09 -0500, Martin K. Petersen wrote:
> >>>>> "nab" == Nicholas A Bellinger <nab@...erainc.com> writes:
> 
> nab> This patch updates tcm_loop_driver_probe() to set protection
> nab> information using scsi_host_set_prot() and scsi_host_set_guard(),
> nab> which currently enabled all modes of DIF/DIX protection, minus DIF
> nab> TYPE0.
> 
> ITYM, DIX Type 0.

Yes.  Fixed up the commit message.

>  And ideally you'd have a way to choose between IP and
> T10 CRC for the guard type.
> 

Sure, this can be exposed at a tcm_loop configfs attribute that is
accessible after scsi_add_host() has been called, which I assume is OK
to do..

--nab

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