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Message-ID: <20240531211211.12628-1-krisman@suse.de>
Date: Fri, 31 May 2024 17:12:06 -0400
From: Gabriel Krisman Bertazi <krisman@...e.de>
To: axboe@...nel.dk
Cc: io-uring@...r.kernel.org,
netdev@...r.kernel.org,
Gabriel Krisman Bertazi <krisman@...e.de>
Subject: [PATCH 0/5] io_uring: support IORING_OP_BIND and IORING_OP_LISTEN
Following a discussion at LSFMM, this patchset introduces two new
io_uring operations for bind(2) and listen(2).
The goal is to provide functional parity of registered files and direct
file descriptors with regular fds for io_uring network operations. The
cool outcome is that we can kickstart a network server solely with
io_uring operations.
This feature has been requested several times in the past, including
at:
https://github.com/axboe/liburing/issues/941
Regarding parameter organization within the SQE, specifically for
bind(2), I'm following the implementation of IO_RING_CONECT. So, even
though addr_len is expected to be an integer in the original syscall, I
pass it through addr2, to match IO_RING_CONNECT. Other than that, the
implementation is quite straightforward.
Patchset 1 fixes a memleak in IO_RING_CONNECT that you might want to
apply ahead of the rest of the patchset; Patches 2 and 3 adapt the net/
side in preparation to support invocations from io_uring; patch 4 and 5
add the io_uring boilerplate.
I wrote liburing support, including tests. I'll follow with those
patches shortly.
Gabriel Krisman Bertazi (5):
io_uring: Fix leak of async data when connect prep fails
net: Split a __sys_bind helper for io_uring
net: Split a __sys_listen helper for io_uring
io_uring: Introduce IORING_OP_BIND
io_uring: Introduce IORING_OP_LISTEN
include/linux/socket.h | 3 ++
include/uapi/linux/io_uring.h | 2 +
io_uring/net.c | 78 ++++++++++++++++++++++++++++++++++-
io_uring/net.h | 6 +++
io_uring/opdef.c | 26 ++++++++++++
net/socket.c | 48 +++++++++++++--------
6 files changed, 144 insertions(+), 19 deletions(-)
--
2.44.0
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