Dear XDP-newbies, I am Nemanja Deric, and I am working as a Researcher for Industrial Networking Department of Siemens AG (Munich, Germany). Recently, we have started looking into AF_XDP/XDP and its applicability for some of our industrial use cases. Thus, we have a few questions about the technology which we hope that this mailing list can help us clarify. If you believe that these questions are better suited for some other mailing list or direct email contact, please let me know so that I can contact the correct person/mailing list. ETF, Timestamping: In comparison to AF_PACKET sockets AF_XDP sockets do not support timestamping (SOL_TXTIME) yet. There seems no way to pass such request or meta-information to the kernel / NIC. Is that correct? We already heard about "xdp hints" but we have failed to get further information like plans / roadmap / implementation state / ideas. Any pointers where to look at? TX queue selection: AF_XDP sockets are always bound to a specific RX queue. Instead, TX queues are "automatically" chosen by the kernel - TX is more or less handled by NAPI. Correct? Has someone already thought about TX queue selection? Any plans / roadmap / details according implementation state available? In advance, thank you for your help. Regards, Nemanja
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