linux-kernel - Re: [PATCH v4 1/5] nvme: authentication error are always non-retryable

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Date: Fri, 5 Apr 2024 08:49:49 +0200
From: Christoph Hellwig <hch@....de>
To: Daniel Wagner <dwagner@...e.de>
Cc: Christoph Hellwig <hch@....de>, James Smart <james.smart@...adcom.com>,
	Keith Busch <kbusch@...nel.org>, Sagi Grimberg <sagi@...mberg.me>,
	Hannes Reinecke <hare@...e.de>, linux-nvme@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 1/5] nvme: authentication error are always
 non-retryable

On Fri, Apr 05, 2024 at 08:45:11AM +0200, Daniel Wagner wrote:
> > This is still abusing on the wire status code for in-kernel return
> > codes.  Can we please sort this out properly?
> 
> Okay, though I am not really sure how to do it correctly.
> 
> So the current mapping is
> 
>   ret < 0: kernel errors
>   ret = 0: all good
>   ret > 0: wire status incl DNR

Yes.

> In order to split the internal DNR away, we could attach it to the cmd.
> Is this what you had in mind? Or do you mean we should not return
> NVME_SC_AUTH_REQUIRED at all. Instead just a negative value and update
> the error handling on the callers?

The latter.