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The MRU value used by the MHI MBIM network interface affects the throughput performance of the interface. Different modem models use different default MRU sizes based on their bandwidth capabilities. Large values generally result in higher throughput for larger packet sizes. In addition if the MRU used by the MHI device is larger than that specified in the MHI net device the data is fragmented and needs to be re-assembled which generates a (single) warning message about the fragmented packets. Setting the MRU on both ends avoids the extra processing to re-assemble the packets. This patch allows the documented MRU for a modem to be automatically set as the MHI net device MRU avoiding fragmentation and improving throughput performance. Signed-off-by: Richard Laing <richard.laing@alliedtelesis.co.nz> Signed-off-by: David S. Miller <davem@davemloft.net>
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.