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
