Daniel Starke 92f1f0c329 tty: n_gsm: add parameter negotiation support
n_gsm is based on the 3GPP 07.010 and its newer version is the 3GPP 27.010.
See https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=1516
The changes from 07.010 to 27.010 are non-functional. Therefore, I refer to
the newer 27.010 here. Chapter 5.1.8.1.1 describes the parameter negotiation
messages and parameters. Chapter 5.4.1 states that the default parameters
are to be used if no negotiation is performed. Chapter 5.4.6.3.1 describes
the encoding of the parameter negotiation message. The meaning of the
parameters and allowed value ranges can be found in chapter 5.7.

Add parameter negotiation support accordingly. DLCI specific parameter
configuration by the user requires additional ioctls. This is subject to
another patch.

Signed-off-by: Daniel Starke <daniel.starke@siemens.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20221103091743.2119-3-daniel.starke@siemens.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-11-09 13:03:58 +01:00
2022-09-28 09:02:20 +02:00
2022-09-28 09:02:20 +02:00
2022-10-20 21:27:21 -07:00
2022-09-28 09:02:20 +02:00
2022-10-30 15:19:28 -07:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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