Session

This talk will describe current use-cases where one MAC is connected to multiple PHYs (chained, or in parallel) and multiple front-facing ports, either through multiple PHYs or through a single multi-port PHY. There exist support for some of these scenarios already, but it is limited by the fact that the PHY device is hidden behind a net_device from userspace’s point of view. We therefore can’t configure an individual PHY when multiple PHYs are present on a link (through SFP transceivers for example), and selecting which front-facing port to use is also limited. This talk will describe ongoing work to support these complex topologies, the challenges faced and expected improvements.