io-uring and tcp sockets

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Hi:

New to io_uring but can't find this answer online, so reaching out.

I was trying out io_uring with netperf - tcp stream sockets - and
noticed a submission is called complete even with a partial send
(io_send(), ret < sr->len). Saving the offset of what succeeded (plus
some other adjustments) and retrying the sqe again solves the problem.
But the issue seems fundamental so wondering if is intentional?

Thanks,
David



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