diff options
| author | Dylan Yudaken <dylany@fb.com> | 2022-06-30 02:12:25 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-07-24 18:39:17 -0600 |
| commit | 114eccdf0e368893b3d92e06e9788d9d94876853 (patch) | |
| tree | cc69f53bf7375db33e8038566c260363364f42e8 /io_uring/io_uring.h | |
| parent | 2ba69707d9153eeca1ee8ac1bc55376b88978842 (diff) | |
| download | linux-114eccdf0e368893b3d92e06e9788d9d94876853.tar.gz | |
io_uring: add IOU_STOP_MULTISHOT return code
For multishot we want a way to signal the caller that multishot has ended
but also this might not be an error return.
For example sockets return 0 when closed, which should end a multishot
recv, but still have a CQE with result 0
Introduce IOU_STOP_MULTISHOT which does this and indicates that the return
code is stored inside req->cqe
Signed-off-by: Dylan Yudaken <dylany@fb.com>
Link: https://lore.kernel.org/r/20220630091231.1456789-7-dylany@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/io_uring.h')
| -rw-r--r-- | io_uring/io_uring.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/io_uring/io_uring.h b/io_uring/io_uring.h index f77e4a5403e4e..e8da70781fa34 100644 --- a/io_uring/io_uring.h +++ b/io_uring/io_uring.h @@ -15,6 +15,13 @@ enum { IOU_OK = 0, IOU_ISSUE_SKIP_COMPLETE = -EIOCBQUEUED, + + /* + * Intended only when both REQ_F_POLLED and REQ_F_APOLL_MULTISHOT + * are set to indicate to the poll runner that multishot should be + * removed and the result is set on req->cqe.res. + */ + IOU_STOP_MULTISHOT = -ECANCELED, }; struct io_uring_cqe *__io_get_cqe(struct io_ring_ctx *ctx); |