linux-kernel - Re: [PATCH v3 13/16] nvmet-fc: abort command if when there is binding

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Date: Tue, 19 Dec 2023 12:39:43 +0100
From: Hannes Reinecke <hare@...e.de>
To: Daniel Wagner <dwagner@...e.de>, linux-nvme@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org, Christoph Hellwig <hch@....de>,
 Sagi Grimberg <sagi@...mberg.me>, Keith Busch <kbusch@...nel.org>,
 James Smart <james.smart@...adcom.com>
Subject: Re: [PATCH v3 13/16] nvmet-fc: abort command if when there is binding

On 12/18/23 16:31, Daniel Wagner wrote:
> WHen the target port has not active port binding, there is no point in
> trying to process the command as it has to fail anyway. Instead adding
> checks to all commands abort the command early.
> 
Please fix up the subject: 'abort command when there is no binding'

> Signed-off-by: Daniel Wagner <dwagner@...e.de>
> ---
>   drivers/nvme/target/fc.c | 8 ++++++--
>   1 file changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/nvme/target/fc.c b/drivers/nvme/target/fc.c
> index 47cecc8c72b2..663c51c9fe53 100644
> --- a/drivers/nvme/target/fc.c
> +++ b/drivers/nvme/target/fc.c
> @@ -1101,6 +1101,9 @@ nvmet_fc_alloc_target_assoc(struct nvmet_fc_tgtport *tgtport, void *hosthandle)
>   	int idx;
>   	bool needrandom = true;
>   
> +	if (!tgtport->pe)
> +		return NULL;
> +
>   	assoc = kzalloc(sizeof(*assoc), GFP_KERNEL);
>   	if (!assoc)
>   		return NULL;
> @@ -2520,8 +2523,9 @@ nvmet_fc_handle_fcp_rqst(struct nvmet_fc_tgtport *tgtport,
>   
>   	fod->req.cmd = &fod->cmdiubuf.sqe;
>   	fod->req.cqe = &fod->rspiubuf.cqe;
> -	if (tgtport->pe)
> -		fod->req.port = tgtport->pe->port;
> +	if (!tgtport->pe)
> +		goto transport_error;
> +	fod->req.port = tgtport->pe->port;
>   
>   	/* clear any response payload */
>   	memset(&fod->rspiubuf, 0, sizeof(fod->rspiubuf));

Otherwise:

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 GmbH, Maxfeldstr. 5, 90409 Nürnberg
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