Re: [PATCH v9 3/4] docs: Add documentation for userspace client interface

On 10/26/20 6:56 AM, Jeffrey Hugo wrote:

On 10/26/2020 7:46 AM, Dan Williams wrote:

quoted

On Mon, 2020-10-26 at 07:38 -0600, Jeffrey Hugo wrote:

quoted

On 10/25/2020 3:46 PM, Jakub Kicinski wrote:

quoted

On Fri, 23 Oct 2020 16:17:54 -0700 Hemant Kumar wrote:

quoted

+UCI driver enables userspace clients to communicate to external
MHI devices
+like modem and WLAN. UCI driver probe creates standard character
device file
+nodes for userspace clients to perform open, read, write, poll
and release file
+operations.

What's the user space that talks to this?

Multiple.

Each channel has a different purpose.  There it is expected that a
different userspace application would be using it.

Hemant implemented the loopback channel, which is a simple channel
that
just sends you back anything you send it.  Typically this is consumed
by
a test application.

Diag is a typical channel to be consumed by userspace.  This is
consumed
by various applications that talk to the remote device for
diagnostic
information (logs and such).

QMI too?
Dan

Interesting question.  My product doesn't use QMI.  I would expect that 
all QMI runs through Router these days, but I am seeing some QMI 
channels in the downstream source.

Hemant, Do you know what is the usecase for the QMI0/QMI1 channels?

QMI0/QMI1 is used to send QMI message (control path) to bring the qmi 
rmnet data call.

Thanks,
Hemant
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