linux-kernel - RE: [PATCH 00/12] New Crypto service commands

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Date:   Fri, 23 Jun 2023 07:35:38 +0000
From:   "Ang, Tien Sung" <tien.sung.ang@...el.com>
To:     Dinh Nguyen <dinguyen@...nel.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 00/12] New Crypto service commands



> -----Original Message-----
> From: Dinh Nguyen <dinguyen@...nel.org>
> Sent: Friday, 23 June, 2023 3:32 PM
> To: Ang, Tien Sung <tien.sung.ang@...el.com>
> Cc: linux-kernel@...r.kernel.org
> Subject: Re: [PATCH 00/12] New Crypto service commands
> 
> 
> 
> On 6/23/23 01:53, Ang, Tien Sung wrote:
> >
> >
> >> -----Original Message-----
> >> From: Dinh Nguyen <dinguyen@...nel.org>
> >> Sent: Friday, 23 June, 2023 1:37 PM
> >> To: Ang, Tien Sung <tien.sung.ang@...el.com>
> >> Cc: linux-kernel@...r.kernel.org
> >> Subject: Re: [PATCH 00/12] New Crypto service commands
> >>
> >>
> >>
> >> On 6/22/23 22:20, tien.sung.ang@...el.com wrote:
> >>> From: Ang Tien Sung <tien.sung.ang@...el.com>
> >>>
> >>> hi,
> >>> This patch set comprises updates to the svc driver to add new crypto
> >>> services for AES encryption/decryption, SHA2 digest generation, SHA2
> >>> MAC verification, ECDSA hash signing, ECDSA SHA2 data signing, ECDSA
> >>> hash signature verification, ECDSA SHA2 data signature verification
> >>> crypto key management and lastly ECDSA public key retrieval.
> >>> The additions of the commands are all standard entries to svc driver
> >>> with minimal logic.
> >>>
> >>
> >> I guess I'll ask the same question, who's the consumer for these?
> >>
> >>
> > This commands will be used by the future and current downstream crypto
> > driver that is under redesign.
> > The svc driver is merely a firmware messenger that is used to send
> > Mailbox commands to the SDM firmware.
> > It is essential for us to begin doing this first. Thanks
> >
> 
> I think what you're going to find out quickly when you upstream more is that
> the community will not care about your downstream stuff. The problem I
> have with this patch is that you're adding code that no-one is using at the
> moment and with the crypto driver being redesigned, this code may or may
> not get used, right? Let's focus on the getting the crypto driver first.
> 
> Dinh
I disagree. Our customers want the SVC driver to be updated. They will use a 
combination of down-stream sources and upstream sources. The crypto driver 
development is another matter. We should focus on ensuring the SVC driver is 
fully upstream will all features. Hope you understand. Let us get there.