Re: First kernel version with uring sockets support

[Jens Axboe <axboe@kernel.dk>]

On 1/22/20 11:22 AM, Dmitry Sychov wrote:
>> You mean the one in liburing?
> 
> I'am referring to
> https://github.com/frevib/io_uring-echo-server/blob/master/src/include/liburing/io_uring.h
> with sockets OPs as the latest interface reference, thinking it will
> help the io_uring newcomers if
> IORING_OP_* lines will have corresponding comments of the minimum
> kernel requirement for now and the future.

The above obviously isn't mine, but it's probably forked/pulled from my
liburing.

I think the best thing to do here is update the io_uring_enter(2)
man page, since it has opcode descriptions. In those descriptions,
each of them should include "Supported since version 5.x" to make
this perfectly clear.

Longer term, I expect the probe to be the most useful for applications.

I don't want to change io_uring.h itself, as I've keep that sane so it
can simply be copied from the kernel repository to liburing. I intend
to keep it that way.

-- 
Jens Axboe