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From: Stefan Roesch <[email protected]>
To: <[email protected]>, <[email protected]>
Cc: <[email protected]>, Jens Axboe <[email protected]>
Subject: [PATCH v1 01/11] io_uring: support CQE32 in io_uring_cqe
Date: Tue, 19 Apr 2022 13:56:14 -0700	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

This adds the struct io_uring_cqe_extra in the structure io_uring_cqe to
support large CQE's.

Co-developed-by: Jens Axboe <[email protected]>
Signed-off-by: Stefan Roesch <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
---
 include/uapi/linux/io_uring.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h
index ee677dbd6a6d..6f9f9b6a9d15 100644
--- a/include/uapi/linux/io_uring.h
+++ b/include/uapi/linux/io_uring.h
@@ -111,6 +111,7 @@ enum {
 #define IORING_SETUP_R_DISABLED	(1U << 6)	/* start with ring disabled */
 #define IORING_SETUP_SUBMIT_ALL	(1U << 7)	/* continue submit on error */
 #define IORING_SETUP_SQE128	(1U << 8)	/* SQEs are 128b */
+#define IORING_SETUP_CQE32	(1U << 9)	/* CQEs are 32b */
 
 enum {
 	IORING_OP_NOP,
@@ -201,6 +202,11 @@ enum {
 #define IORING_POLL_UPDATE_EVENTS	(1U << 1)
 #define IORING_POLL_UPDATE_USER_DATA	(1U << 2)
 
+struct io_uring_cqe_extra {
+	__u64	extra1;
+	__u64	extra2;
+};
+
 /*
  * IO completion data structure (Completion Queue Entry)
  */
@@ -208,6 +214,12 @@ 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.
+	 */
+	struct io_uring_cqe_extra	b[0];
 };
 
 /*
-- 
2.30.2


  reply	other threads:[~2022-04-19 20:56 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-19 20:56 [PATCH v1 00/11] add large CQE support for io-uring Stefan Roesch
2022-04-19 20:56 ` Stefan Roesch [this message]
2022-04-22  1:51   ` [PATCH v1 01/11] io_uring: support CQE32 in io_uring_cqe Kanchan Joshi
2022-04-22  5:18     ` Kanchan Joshi
2022-04-22 21:26     ` Stefan Roesch
2022-04-19 20:56 ` [PATCH v1 02/11] io_uring: wire up inline completion path for CQE32 Stefan Roesch
2022-04-19 20:56 ` [PATCH v1 03/11] io_uring: change ring size calculation " Stefan Roesch
2022-04-19 20:56 ` [PATCH v1 04/11] io_uring: add CQE32 setup processing Stefan Roesch
2022-04-19 20:56 ` [PATCH v1 05/11] io_uring: add CQE32 completion processing Stefan Roesch
2022-04-19 20:56 ` [PATCH v1 06/11] io_uring: modify io_get_cqe for CQE32 Stefan Roesch
2022-04-19 20:56 ` [PATCH v1 07/11] io_uring: flush completions " Stefan Roesch
2022-04-19 20:56 ` [PATCH v1 08/11] io_uring: overflow processing " Stefan Roesch
2022-04-19 20:56 ` [PATCH v1 09/11] io_uring: add tracing for additional CQE32 fields Stefan Roesch
2022-04-19 20:56 ` [PATCH v1 10/11] io_uring: enable CQE32 Stefan Roesch
2022-04-19 20:56 ` [PATCH v1 11/11] io_uring: support CQE32 for nop operation Stefan Roesch

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