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| author | Pavel Begunkov <asml.silence@gmail.com> | 2022-07-12 23:52:43 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-07-25 03:41:07 +0300 |
| commit | 06a5464be84e4ae48394d34441baf34bf9706827 (patch) | |
| tree | 97726fb3e90715c2a4077834806f712a20826790 /include/uapi/linux/io_uring.h | |
| parent | bc24d6bd32df0be19df3d30e74be4ba56493c0e2 (diff) | |
| download | linux-06a5464be84e4ae48394d34441baf34bf9706827.tar.xz | |
io_uring: wire send zc request type
Add a new io_uring opcode IORING_OP_SENDZC. The main distinction from
IORING_OP_SEND is that the user should specify a notification slot
index in sqe::notification_idx and the buffers are safe to reuse only
when the used notification is flushed and completes.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/a80387c6a68ce9cf99b3b6ef6f71068468761fb7.1657643355.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/uapi/linux/io_uring.h')
| -rw-r--r-- | include/uapi/linux/io_uring.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h index dcfc7a0bda0c..82bf2991e9bd 100644 --- a/include/uapi/linux/io_uring.h +++ b/include/uapi/linux/io_uring.h @@ -66,6 +66,10 @@ struct io_uring_sqe { union { __s32 splice_fd_in; __u32 file_index; + struct { + __u16 notification_idx; + __u16 __pad; + }; }; union { struct { @@ -197,6 +201,7 @@ enum io_uring_op { IORING_OP_GETXATTR, IORING_OP_SOCKET, IORING_OP_URING_CMD, + IORING_OP_SENDZC_NOTIF, /* this goes last, obviously */ IORING_OP_LAST, |