Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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: Jens Axboe <axboe@kernel.dk>
+10
+10
include/uapi/linux/io_uring.h
+10
include/uapi/linux/io_uring.h
···
491
491
* other provided buffer type, all completions with a
492
492
* buffer passed back is automatically returned to the
493
493
* application.
494
+
* IORING_CQE_F_SKIP If set, then the application/liburing must ignore this
495
+
* CQE. It's only purpose is to fill a gap in the ring,
496
+
* if a large CQE is attempted posted when the ring has
497
+
* just a single small CQE worth of space left before
498
+
* wrapping.
499
+
* IORING_CQE_F_32 If set, this is a 32b/big-cqe posting. Use with rings
500
+
* setup in a mixed CQE mode, where both 16b and 32b
501
+
* CQEs may be posted to the CQ ring.
494
502
*/
495
503
#define IORING_CQE_F_BUFFER (1U << 0)
496
504
#define IORING_CQE_F_MORE (1U << 1)
497
505
#define IORING_CQE_F_SOCK_NONEMPTY (1U << 2)
498
506
#define IORING_CQE_F_NOTIF (1U << 3)
499
507
#define IORING_CQE_F_BUF_MORE (1U << 4)
508
+
#define IORING_CQE_F_SKIP (1U << 5)
509
+
#define IORING_CQE_F_32 (1U << 15)
500
510
501
511
#define IORING_CQE_BUFFER_SHIFT 16
502
512