From 7a51e5b44b92686eebd3e1b46b86e1eb4db975db Mon Sep 17 00:00:00 2001
From: Stefan Roesch <shr@fb.com>
Date: Tue, 26 Apr 2022 11:21:23 -0700
Subject: [PATCH] io_uring: support CQE32 in io_uring_cqe
Git-commit: 7a51e5b44b92686eebd3e1b46b86e1eb4db975db
Patch-mainline: v5.19-rc1
References: bsc#1205205
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>
Signed-off-by: Gabriel Krisman Bertazi <krisman@suse.de>
---
include/uapi/linux/io_uring.h | 7 +++++++
1 file changed, 7 insertions(+)
--- a/include/uapi/linux/io_uring.h
+++ b/include/uapi/linux/io_uring.h
@@ -110,6 +110,7 @@ enum {
#define IORING_SETUP_SUBMIT_ALL (1U << 7) /* continue submit on error */
#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,
@@ -224,6 +225,12 @@ 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[];
};
/*