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io_uring: support CQE32 in io_uring_cqe

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This adds the big_cqe array to the struct io_uring_cqe to support large
CQE's.

Co-developed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Stefan Roesch <shr@fb.com>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Link: https://lore.kernel.org/r/20220426182134.136504-2-shr@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Stefan Roesch 2022-04-26 11:21:23 -07:00 committed by Jens Axboe
parent ebdeb7c01d
commit 7a51e5b44b
1 changed files with 7 additions and 0 deletions
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7
include/uapi/linux/io_uring.h
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@ -126,6 +126,7 @@ enum {
#define IORING_SETUP_TASKRUN_FLAG (1U << 9)
#define IORING_SETUP_SQE128 (1U << 10) /* SQEs are 128 byte */
#define IORING_SETUP_CQE32 (1U << 11) /* CQEs are 32 byte */
enum io_uring_op {
IORING_OP_NOP,
@ -245,6 +246,12 @@ struct io_uring_cqe {
__u64 user_data; /* sqe->data submission passed back */
__s32 res; /* result code for this event */
__u32 flags;
/*
* If the ring is initialized with IORING_SETUP_CQE32, then this field
* contains 16-bytes of padding, doubling the size of the CQE.
*/
__u64 big_cqe[];
};
/*