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Each time a switch port joins a bridge, it will start to use a FDB table common with all the other switch ports that are under the same bridge. This means that any VLAN added prior to a bridge join, will retain its previous FDB table destination. With this patch, I choose to restrict when a switch port can change it's upper device (either join or leave) so that the driver does not have to delete all the previously installed VLANs from the previous FDB and add them into the new one. Thus, in the PRECHANGEUPPER notification we check if there are any VLAN type upper devices and if that's true, deny the CHANGEUPPER. This way, the user is not restricted in the topology but rather in the order in which the setup is done: it must first create the bridging domain layout and after that add the necessary VLAN devices if necessary. The teardown is similar, the VLAN devices will need to be destroyed prior to a change in the bridging layout. Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| kernel | ||
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| .clang-format | ||
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| README | ||
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.