September 27-30, 2021
Seattle, Washington, USA + Virtual
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Wednesday, September 29 • 1:45pm - 2:35pm
(IN-PERSON) Distributed Switch Architecture (DSA): Running Mainline on Commercial Switches - Marcel Ziswiler, Toradex

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As an OpenWrt contributor running mainline on Wi-Fi routers for more than a decade I dreamed of mainline-based networking beyond Wi-Fi. This talk starts with an introduction to DSA and then dives into the available mainline DSA drivers and how one may run them on regular commercial off-the-shelf switches. While DSA started as a subsystem primarily designed to support Marvell Link Street MV88E6xxx Ethernet switches, it since evolved to support many other vendors as well. Interestingly, however, the first line of supported traditional networking switches in OpenWrt was based on the Realtek RTL83xx series of switching SoCs whose driver got reverse engineered from leaked datasheets. This series of SoCs is very popular, found in dozens of distinct models of many different vendors. The latest work concentrates on integrating further hardware acceleration features like the packet inspection engine which at the moment can already offload routing on the RTL838x at wire speed. A third contender is Microchip (formerly Microsemi resp. Vitesse) which also has a line of standalone as well as SoC integrated switches. Further topics covered include power over ethernet (PoE) which is currently not covered by any upstream subsystem. This talk will conclude with a live demonstration.

avatar for Marcel Ziswiler

Marcel Ziswiler

Software Team Lead - Embedded Linux BSP, Toradex
Marcel Ziswiler joined Toradex in 2011 spearheading the Embedded Linux adoption as their head of the embedded Linux BSP team. His introducing an upstream first policy lead to being top 10 U-Boot as well as Linux kernel ARM SoC contributor. In the past, he was a senior Linux expert... Read More →

Wednesday September 29, 2021 1:45pm - 2:35pm PDT
Elwha A
  Linux Systems, Networking