netdev - Re: net: wwan: ethernet interface support

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Message-ID: <CAHNKnsQMFDdRzjAGW8+KHJrJUnganM0gi8AWmBnF1h_M2RSLeg@mail.gmail.com>
Date:   Sat, 19 Mar 2022 21:34:23 +0300
From:   Sergey Ryazanov <ryazanov.s.a@...il.com>
To:     "Kumar, M Chetan" <m.chetan.kumar@...ux.intel.com>
Cc:     Loic Poulain <loic.poulain@...aro.org>,
        Johannes Berg <johannes@...solutions.net>,
        netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        "Sudi, Krishna C" <krishna.c.sudi@...el.com>,
        Intel Corporation <linuxwwan@...el.com>
Subject: Re: net: wwan: ethernet interface support

Hello,

On Sat, Mar 19, 2022 at 6:21 PM Kumar, M Chetan
<m.chetan.kumar@...ux.intel.com> wrote:
> Release16 5G WWAN Device need to support Ethernet interface for TSN requirement.
> So far WWAN interface are of IP type. Is there any plan to scale it to support
> ethernet interface type ?

What did you mean when you talked about supporting interfaces of Ethernet type?

The WWAN subsystem provides an interface for users to request the
creation of a network interface from a modem driver. At the moment,
all modem drivers that support the WWAN subsystem integration create
network interfaces of the ARPHRD_NONE or ARPHRD_RAWIP type. But it is
up to the driver what type of interface it will create. At any time,
the driver can decide to create an ARPHRD_ETHER network interface, and
it will be Ok.

> Any thought process on TSN requirement support.

Could you please elaborate what specific protocol or feature should be
implemented for it?

-- 
Sergey