mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-05-02 07:29:12 -04:00
8629745ccc
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 6 describes the error recovery mode option which is based on I frames. The k parameter defines the maximum number of I frames that a DLC can have unacknowledged as described in chapter 5.7.4. The current n_gsm implementation does not support the error recovery mode option. However, the k parameter is also part of the parameter negotiation message as described in chapter 5.4.6.3.1. Chapter 5.7.4 also notes that the allowed value range for k is 1-7. That means a 0 is counted as invalid here. This means that the user needs to configure a valid value here even if the function itself is not supported. Otherwise, parameter negotiation may fail. Allow setting of k via ioctl in gsm_config(). Range checks are already included. Signed-off-by: Daniel Starke <daniel.starke@siemens.com> Link: https://lore.kernel.org/r/20230315105354.6234-2-daniel.starke@siemens.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.