netdev - Re: [PATCH v7 04/23] Revert "nvme-tcp: remove the unused queue_size member in nvme_tcp

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Message-ID: <20221025161442.GD26372@lst.de>
Date:   Tue, 25 Oct 2022 18:14:42 +0200
From:   Christoph Hellwig <hch@....de>
To:     Aurelien Aptel <aaptel@...dia.com>
Cc:     netdev@...r.kernel.org, davem@...emloft.net, kuba@...nel.org,
        edumazet@...gle.com, pabeni@...hat.com, saeedm@...dia.com,
        tariqt@...dia.com, leon@...nel.org, linux-nvme@...ts.infradead.org,
        sagi@...mberg.me, hch@....de, kbusch@...nel.org, axboe@...com,
        chaitanyak@...dia.com, smalin@...dia.com, ogerlitz@...dia.com,
        yorayz@...dia.com, borisp@...dia.com, aurelien.aptel@...il.com,
        malin1024@...il.com
Subject: Re: [PATCH v7 04/23] Revert "nvme-tcp: remove the unused
 queue_size member in nvme_tcp_queue"

On Tue, Oct 25, 2022 at 04:59:39PM +0300, Aurelien Aptel wrote:
> This reverts commit fb8745d040ef5b9080003325e56b91fefe1022bb.
> 
> The newly added NVMeTCP offload requires the field
> nvme_tcp_queue->queue_size in the patch
> "nvme-tcp: Add DDP offload control path" in nvme_tcp_offload_socket().
> The queue size is part of struct ulp_ddp_config
> parameters.

Please never do reverts if you just bring something back for an entirely
differenet reason.  And I think we need a really good justification of
why you have a code path that can get the queue struct and not the
controller, which really should not happen.