[PATCH liburing 1/4] sync io_uring.h API file with Linux 5.13

[Pavel Begunkov <asml.silence@gmail.com>]

Add resource tagging and registation and multi-polling definitions, and
align space/tabs with the kernel.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 src/include/liburing/io_uring.h | 41 ++++++++++++++++++++++++++-------
 1 file changed, 33 insertions(+), 8 deletions(-)

diff --git a/src/include/liburing/io_uring.h b/src/include/liburing/io_uring.h
index eed991d..5a3cb90 100644
--- a/src/include/liburing/io_uring.h
+++ b/src/include/liburing/io_uring.h
@@ -168,16 +168,16 @@ enum {
  * POLL_ADD flags. Note that since sqe->poll_events is the flag space, the
  * command flags for POLL_ADD are stored in sqe->len.
  *
- * IORING_POLL_ADD_MULTI        Multishot poll. Sets IORING_CQE_F_MORE if
- *                              the poll handler will continue to report
- *                              CQEs on behalf of the same SQE.
+ * IORING_POLL_ADD_MULTI	Multishot poll. Sets IORING_CQE_F_MORE if
+ *				the poll handler will continue to report
+ *				CQEs on behalf of the same SQE.
  *
- * IORING_POLL_UPDATE           Update existing poll request, matching
- *                              sqe->addr as the old user_data field.
+ * IORING_POLL_UPDATE		Update existing poll request, matching
+ *				sqe->addr as the old user_data field.
  */
-#define IORING_POLL_ADD_MULTI   (1U << 0)
-#define IORING_POLL_UPDATE_EVENTS       (1U << 1)
-#define IORING_POLL_UPDATE_USER_DATA    (1U << 2)
+#define IORING_POLL_ADD_MULTI	(1U << 0)
+#define IORING_POLL_UPDATE_EVENTS	(1U << 1)
+#define IORING_POLL_UPDATE_USER_DATA	(1U << 2)
 
 /*
  * IO completion data structure (Completion Queue Entry)
@@ -192,8 +192,10 @@ struct io_uring_cqe {
  * cqe->flags
  *
  * IORING_CQE_F_BUFFER	If set, the upper 16 bits are the buffer ID
+ * IORING_CQE_F_MORE	If set, parent SQE will generate more CQE entries
  */
 #define IORING_CQE_F_BUFFER		(1U << 0)
+#define IORING_CQE_F_MORE		(1U << 1)
 
 enum {
 	IORING_CQE_BUFFER_SHIFT		= 16,
@@ -301,6 +303,8 @@ enum {
 	IORING_UNREGISTER_PERSONALITY		= 10,
 	IORING_REGISTER_RESTRICTIONS		= 11,
 	IORING_REGISTER_ENABLE_RINGS		= 12,
+	IORING_REGISTER_RSRC			= 13,
+	IORING_REGISTER_RSRC_UPDATE		= 14,
 
 	/* this goes last */
 	IORING_REGISTER_LAST
@@ -313,12 +317,33 @@ struct io_uring_files_update {
 	__aligned_u64 /* __s32 * */ fds;
 };
 
+enum {
+	IORING_RSRC_FILE		= 0,
+	IORING_RSRC_BUFFER		= 1,
+};
+
+struct io_uring_rsrc_register {
+	__u32 type;
+	__u32 nr;
+	__aligned_u64 data;
+	__aligned_u64 tags;
+};
+
 struct io_uring_rsrc_update {
 	__u32 offset;
 	__u32 resv;
 	__aligned_u64 data;
 };
 
+struct io_uring_rsrc_update2 {
+	__u32 offset;
+	__u32 resv;
+	__aligned_u64 data;
+	__aligned_u64 tags;
+	__u32 type;
+	__u32 nr;
+};
+
 /* Skip updating fd indexes set to this value in the fd table */
 #define IORING_REGISTER_FILES_SKIP	(-2)
 
-- 
2.31.1