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108 Commits

Author SHA1 Message Date
Dylan Yudaken
cbd2574854 io_uring: fix multishot accept ordering 
Similar to multishot poll, drop multishot accept when CQE overflow occurs.

Signed-off-by: Dylan Yudaken <dylany@fb.com>
Link: https://lore.kernel.org/r/20220630091231.1456789-10-dylany@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2022-07-24 18:39:17 -06:00
Dylan Yudaken
52120f0fad io_uring: add allow_overflow to io_post_aux_cqe 
Some use cases of io_post_aux_cqe would not want to overflow as is, but
might want to change the flags/result. For example multishot receive
requires in order CQE, and so if there is an overflow it would need to
stop receiving until the overflow is taken care of.

Signed-off-by: Dylan Yudaken <dylany@fb.com>
Link: https://lore.kernel.org/r/20220630091231.1456789-8-dylany@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2022-07-24 18:39:17 -06:00
Dylan Yudaken
d4e097dae2 io_uring: recycle buffers on error 
Rather than passing an error back to the user with a buffer attached,
recycle the buffer immediately.

Signed-off-by: Dylan Yudaken <dylany@fb.com>
Link: https://lore.kernel.org/r/20220630091231.1456789-5-dylany@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2022-07-24 18:39:16 -06:00
Dylan Yudaken
5702196e7d io_uring: allow iov_len = 0 for recvmsg and buffer select 
When using BUFFER_SELECT there is no technical requirement that the user
actually provides iov, and this removes one copy_from_user call.

So allow iov_len to be 0.

Signed-off-by: Dylan Yudaken <dylany@fb.com>
Link: https://lore.kernel.org/r/20220630091231.1456789-4-dylany@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2022-07-24 18:39:16 -06:00
Pavel Begunkov
27a9d66fec io_uring: kill extra io_uring_types.h includes 
io_uring/io_uring.h already includes io_uring_types.h, no need to
include it every time. Kill it in a bunch of places, it prepares us for
following patches.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/94d8c943fbe0ef949981c508ddcee7fc1c18850f.1655384063.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2022-07-24 18:39:14 -06:00
Pavel Begunkov
d245bca637 io_uring: don't expose io_fill_cqe_aux() 
Deduplicate some code and add a helper for filling an aux CQE, locking
and notification.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/b7c6557c8f9dc5c4cfb01292116c682a0ff61081.1655455613.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2022-07-24 18:39:14 -06:00
Jens Axboe
3b77495a97 io_uring: split provided buffers handling into its own file 
Move both the opcodes related to it, and the internals code dealing with
it.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2022-07-24 18:39:12 -06:00
Jens Axboe
f9ead18c10 io_uring: split network related opcodes into its own file 
While at it, convert the handlers to just use io_eopnotsupp_prep()
if CONFIG_NET isn't set.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2022-07-24 18:39:11 -06:00