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A comment on QUIC for the Kernel. Parent comment

Re:QUIC for the Kernel by zamalek on Thursday July 31, 2025 @03:13PM (#44749058)
What is done for that is userspace gets the network data directly without (I believe) involving syscalls. It's not something you'd do for end-user software, only the likes of MOFAANG need it.

In theory the likes of io_uring would bring these benefits across the board, but we haven't seen that delivered (yet, I remain optimistic).

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Re:QUIC for the Kernel by phlip9 on Thursday July 31, 2025 @06:50PM (#44751088)
I'm hoping we get there too with io_uring. It looks like the last few kernel release have made a lot of progress with zero-copy TCP rx/tx, though NIC support is limited and you need some finicky network iface setup to get the flow steering working

https://docs.kernel.org/networking/iou-zcrx.html

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