Commit b6945873 authored by Jens Axboe's avatar Jens Axboe
Browse files

io_uring: add UAPI definitions for mixed CQE postings 



This adds the CQE flags related to supporting a mixed CQ ring mode, where
both normal (16b) and big (32b) CQEs may be posted.

No functional changes in this patch.

Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent d0201c44

include/uapi/linux/io_uring.h

+10 −0
Original line number Diff line number Diff line
@@ -491,12 +491,22 @@ struct io_uring_cqe { 
 *			other provided buffer type, all completions with a

 *			buffer passed back is automatically returned to the

 *			application.

 * IORING_CQE_F_SKIP	If set, then the application/liburing must ignore this

 *			CQE. It's only purpose is to fill a gap in the ring,

 *			if a large CQE is attempted posted when the ring has

 *			just a single small CQE worth of space left before

 *			wrapping.

 * IORING_CQE_F_32	If set, this is a 32b/big-cqe posting. Use with rings

 *			setup in a mixed CQE mode, where both 16b and 32b

 *			CQEs may be posted to the CQ ring.

 */

#define IORING_CQE_F_BUFFER		(1U << 0)

#define IORING_CQE_F_MORE		(1U << 1)

#define IORING_CQE_F_SOCK_NONEMPTY	(1U << 2)

#define IORING_CQE_F_NOTIF		(1U << 3)

#define IORING_CQE_F_BUF_MORE		(1U << 4)

#define IORING_CQE_F_SKIP		(1U << 5)

#define IORING_CQE_F_32			(1U << 15)



#define IORING_CQE_BUFFER_SHIFT		16