a6f0b26d6a
Vladimir Oltean says: ==================== This series adds support for boards where DSA switches of multiple types are cascaded together. Actually this type of setup was brought up before on netdev, and it looks like utilizing disjoint trees is the way to go: https://lkml.org/lkml/2019/7/7/225 The trouble with disjoint trees (prior to this patch series) is that only bridging of ports within the same hardware switch can be offloaded. After scratching my head for a while, it looks like the easiest way to support hardware bridging between different DSA trees is to bridge their DSA masters and extend the crosschip bridging operations. I have given some thought to bridging the DSA masters with the slaves themselves, but given the hardware topology described in the commit message of patch 4/4, virtually any number (and combination) of bridges (forwarding domains) can be created on top of those 3x4-port front-panel switches. So it becomes a lot less obvious, when the front-panel ports are enslaved to more than 1 bridge, which bridge should the DSA masters be enslaved to. So the least awkward approach was to just create a completely separate bridge for the DSA masters, whose entire purpose is to permit hardware forwarding between the discrete switches beneath it. This is a direct resend of v3, which was deferred due to lack of review. In the meantime Florian has reviewed and tested some of them. v1 was submitted here: https://patchwork.ozlabs.org/project/netdev/cover/20200429161952.17769-1-olteanv@gmail.com/ v2 was submitted here: https://patchwork.ozlabs.org/project/netdev/cover/20200430202542.11797-1-olteanv@gmail.com/ v3 was submitted here: https://patchwork.ozlabs.org/project/netdev/cover/20200503221228.10928-1-olteanv@gmail.com/ ==================== Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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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.