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e74c048ae4
The structure gsm_mux contains the 'unsupported' field. However, there is currently no place in the code which increases this counter. Increase the 'unsupported' statistics counter in the following case: - an unsupported frame type has been requested by the peer via parameter negotiation - a control frame with an unsupported but known command has been received Note that we have no means to detect an inconsistent/unsupported adaptation sufficient accuracy as this changes the structure of the UI/UIH frames. E.g. a one byte header is added in case of convergence layer type 2 instead of 1 and contains the modem signal octet with the state of the signal lines. There is no checksum or other value which indicates of this field is correct or should be present. Therefore, we can only assume protocol correctness here. See also 'gsm_dlci_data()' where this is handled. Signed-off-by: Daniel Starke <daniel.starke@siemens.com> Link: https://lore.kernel.org/r/20230817093231.2317-6-daniel.starke@siemens.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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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.