Supporting ethtool with Linux Integration Service Open Source Technology Center Microsoft.

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Presentation transcript:

Supporting ethtool with Linux Integration Service Open Source Technology Center Microsoft

What is ethtool? The man page description: ethtool is used to query and control network device driver and hardware settings, particularly for wired Ethernet devices “ethtool” is a Linux utility which makes system calls into the kernel to change or display a set of tunable variables that impact the network features and performance The number of send/receive queues of vRSS The size of send/receive buffers Turning on/off Large Send Offloading, etc.

What’s the Linux Integration Service? The Linux Integration Service (LIS) includes a number of kernel mode drivers in the Linux virtual machines (guests) running on Hyper-V hosts or Azure cloud Hyper-V is a native (bare metal) hypervisor (like XEN and VMware ESX) for running virtual machines The LIS drivers enable the Linux guests to run efficiently in the virtualized environment

What’s required to support ethtool? A set of callback functions needs to be implemented in our driver to support these tuning capabilities. Implementing these functions requires knowledge of the Linux kernel internals, and a detailed understanding of how our LIS source code works. As part of the Linux kernel, the developed code will be open-source with plans to be integrated into the kernel source tree. Mailing list: Linux Driver Project Developer List