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Andrew Lunn says: ==================== Adjust MTU of DSA master interface DSA makes use of additional headers to direct a frame in/out of a specific port of the switch. When the slave interfaces uses an MTU of 1500, the master interface can be asked to handle frames with an MTU of 1504, or 1508 bytes. Some Ethernet interfaces won't transmit/receive frames which are bigger than their MTU. Automate the increasing of the MTU on the master interface, by adding to each tagging driver how much overhead they need, and then calling dev_set_mtu() of the master interface to increase its MTU as needed. ==================== 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.