linux-kernel - Re: [PATCH-v2 03/17] target/sbc: Add DIF setup in sbc_check_prot + sbc_parse

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Message-ID: <1390429620.5567.982.camel@haakon3.risingtidesystems.com>
Date:	Wed, 22 Jan 2014 14:27:00 -0800
From:	"Nicholas A. Bellinger" <nab@...ux-iscsi.org>
To:	Sagi Grimberg <sagig@....mellanox.co.il>
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>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	Christoph Hellwig <hch@....de>, Hannes Reinecke <hare@...e.de>,
	Sagi Grimberg <sagig@...lanox.com>,
	Or Gerlitz <ogerlitz@...lanox.com>,
	Roland Dreier <roland@...nel.org>
Subject: Re: [PATCH-v2 03/17] target/sbc: Add DIF setup in sbc_check_prot +
 sbc_parse_cdb

On Wed, 2014-01-22 at 20:00 +0200, Sagi Grimberg wrote:
> On 1/22/2014 12:48 AM, Nicholas A. Bellinger wrote:
> > +	cmd->prot_handover = PROT_SEPERATED;
> >> I know that we are not planning to support interleaved mode at the
> >> moment, But I think
> >> that the protection handover type is the backstore preference and should
> >> be taken from se_dev.
> >> But it is not that important for now...
> >>
> > Yeah, I figured since the RDMA pieces needed the handover type defined
> > in some form, it made sense to include PROT_SEPERATED hardcoded here,
> > but stopped short of adding se_dev->prot_handler for the first round
> > merge.
> >
> > --nab
> >
> 
> Actually they don't, I just added them in iSER code to demonstrate the 
> HW ability.
> If we are not planning to support that (although as MKP mentioned it 
> might be useful in some cases),
> you can remove that for now and we can add it in the future - iSER can 
> ignore it for now (I'll refactor the patches).
> 

<nod>

I'll likely leave this in for the initial merge to avoid rebasing
target-pending/for-next now that the merge window is open.

Let's drop this bit in a separate incremental patch.

--nab

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