Hi, I am not much aware of linux networking architecture so I'd like to ask first before will start to dig into the code. Appreciate any feedback.
I am looking on Linux thermal framework and on how to cool down the system effectively when it hits thermal condition. Already existing cooling methods cpu_cooling and clock_cooling are good. However, I wanted to go further and dynamically control also a switch ports' speed based on thermal condition. Lowering speed means less power, less power means lower temp. Is there any in-kernel interface to configure switch port/NIC from other driver? Is there any mechanism to power save, when port/interface is not really used (not much or low data traffic), embedded in networking stack or is it a task for NIC driver itself ? I was thinking to create net_cooling device similarly to cpu_cooling device which cool down the system scaling down cpu freq. net_cooling could lower down interface speed (or tune more parameters to achieve ). Do you thing could this work form networking stack perspective? Any pointers to the code or a doc highly appreciated. Thanks, /Waldek
