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docs: bridge: add switchdev doc

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Add switchdev part for bridge document.

Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Hangbin Liu 2023-12-01 16:19:48 +08:00 committed by Paolo Abeni
parent 75ceac88ef
commit 3c37f17d6c
1 changed files with 18 additions and 0 deletions
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18
Documentation/networking/bridge.rst
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@ -233,6 +233,24 @@ which is disabled by default but can be enabled. And `Multicast Router Discovery
<https://lore.kernel.org/netdev/20190121062628.2710-1-linus.luessing@c0d3.blue/>`_,
which help identify the location of multicast routers.
Switchdev
=========
Linux Bridge Switchdev is a feature in the Linux kernel that extends the
capabilities of the traditional Linux bridge to work more efficiently with
hardware switches that support switchdev. With Linux Bridge Switchdev, certain
networking functions like forwarding, filtering, and learning of Ethernet
frames can be offloaded to a hardware switch. This offloading reduces the
burden on the Linux kernel and CPU, leading to improved network performance
and lower latency.
To use Linux Bridge Switchdev, you need hardware switches that support the
switchdev interface. This means that the switch hardware needs to have the
necessary drivers and functionality to work in conjunction with the Linux
kernel.
Please see the :ref:`switchdev` document for more details.
FAQ
===