Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
MIME-Version: 1.0
References: <20201228094507.32141-1-bongsu.jeon@samsung.com>
 <20201228131657.562606a0@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
 <CACwDmQCVkxa6u0ZuS4Zn=9JvOXoOE8-v1ZSESO-TaS9yHc7A8A@mail.gmail.com>
 <20210104114842.2eccef83@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
 <CACwDmQCTj1T+25XBx8=3z=NmCtBSeHxHbUykA6r9_MwNJmJOQQ@mail.gmail.com> <20210106090112.04ebf38f@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
In-Reply-To: <20210106090112.04ebf38f@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
From:   Bongsu Jeon <bongsu.jeon2@gmail.com>
Date:   Fri, 8 Jan 2021 07:38:29 +0900
Message-ID: <CACwDmQAKky89hBzmOR0FOy=B0HQ8-APj0MEKBFwUHtnTSWXh_w@mail.gmail.com>
Subject: Re: [PATCH net-next] nfc: Add a virtual nci device driver
To:     Jakub Kicinski <kuba@kernel.org>
Cc:     davem@davemloft.net, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-nfc@lists.01.org,
        Bongsu Jeon <bongsu.jeon@samsung.com>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

On Thu, Jan 7, 2021 at 2:01 AM Jakub Kicinski <kuba@kernel.org> wrote:
>
> On Wed, 6 Jan 2021 08:16:47 +0900 Bongsu Jeon wrote:
> > On Tue, Jan 5, 2021 at 4:48 AM Jakub Kicinski <kuba@kernel.org> wrote:
> > > > thank you for your answer.
> > > > I think that neard(NFC deamon) is necessary to test the NCI subsystem
> > > > meaningfully.
> > > > The NCI virtual device in user space can communicate with neard
> > > > through this driver.
> > > > Is it enough to make NCI virtual device at tools/nfc for some test?
> > >
> > > I'm not sure if I understand. Are you asking if it's okay for the test
> > > or have a dependency on neard?
> >
> > Sorry for confusing you.
> > There is no dependency between neard and a NCI virtual device.
> > But, To test the NCI module, it is necessary to make an application like neard.
> > Is it okay to just make a NCI virtual device as a tool at tools/nfc
> > without the application?
>
> Meaning the device will be created but there will be no test cases in
> the tree?

yes.

>
> What we'd like to see is some form of a test which would exercise the
> NFC-related kernel code on such a device and can signal success /
> failure. It doesn't have to be very complex.
>
> You can build a more complex user space applications and tests
> separately.

okay. I understand it. I will try to make it.