netdev - Re: [RFC PATCH v6 04/27] nvme-tcp-offload: Add device scan implementation

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Date:   Fri, 28 May 2021 12:28:39 +0200
From:   Hannes Reinecke <hare@...e.de>
To:     Shai Malin <smalin@...vell.com>, netdev@...r.kernel.org,
        linux-nvme@...ts.infradead.org, davem@...emloft.net,
        kuba@...nel.org, sagi@...mberg.me, hch@....de, axboe@...com,
        kbusch@...nel.org
Cc:     aelior@...vell.com, mkalderon@...vell.com, okulkarni@...vell.com,
        pkushwaha@...vell.com, malin1024@...il.com,
        Dean Balandin <dbalandin@...vell.com>
Subject: Re: [RFC PATCH v6 04/27] nvme-tcp-offload: Add device scan
 implementation

On 5/28/21 1:58 AM, Shai Malin wrote:
> From: Dean Balandin <dbalandin@...vell.com>
> 
> As part of create_ctrl(), it scans the registered devices and calls
> the claim_dev op on each of them, to find the first devices that matches
> the connection params. Once the correct devices is found (claim_dev
> returns true), we raise the refcnt of that device and return that device
> as the device to be used for ctrl currently being created.
> 
> Acked-by: Igor Russkikh <irusskikh@...vell.com>
> Signed-off-by: Dean Balandin <dbalandin@...vell.com>
> Signed-off-by: Prabhakar Kushwaha <pkushwaha@...vell.com>
> Signed-off-by: Omkar Kulkarni <okulkarni@...vell.com>
> Signed-off-by: Michal Kalderon <mkalderon@...vell.com>
> Signed-off-by: Ariel Elior <aelior@...vell.com>
> Signed-off-by: Shai Malin <smalin@...vell.com>
> Reviewed-by: Himanshu Madhani <himanshu.madhani@...cle.com>
> ---
>  drivers/nvme/host/tcp-offload.c | 77 +++++++++++++++++++++++++++++++++
>  1 file changed, 77 insertions(+)
> 
I'm not entirely happy with the lookup mechanism; one should look at
converting it to a proper 'bus' like the mellanox driver did.
But that's something would could be done at a later stage.

Reviewed-by: Hannes Reinecke <hare@...e.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		        Kernel Storage Architect
hare@...e.de			               +49 911 74053 688
SUSE Software Solutions Germany GmbH, 90409 Nürnberg
GF: F. Imendörffer, HRB 36809 (AG Nürnberg)