In HFT user-space networking drivers have a long history - there is too much latency induced by switching from kernel to user space to handle networking.
OpenOnload: A user-space network stack that intercepts socket calls to bypass the kernel network stack, accelerating standard socket operations for faster networking.
Netmap: A framework providing a simple API for high-speed packet I/O in user space, bypassing much of the kernel overhead for efficient packet forwarding and filtering.
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In HFT user-space networking drivers have a long history - there is too much latency induced by switching from kernel to user space to handle networking.
https://dysnix.com/blog/high-frequency-trading-infrastructur...