io_uring: allow events and user_data update of running poll requests

[linux-2.6-microblaze.git] / include / uapi / linux / io_uring.h

diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h
index 2514eb6..5beaa6b 100644 (file)
--- a/include/uapi/linux/io_uring.h
+++ b/include/uapi/linux/io_uring.h
@@ -159,6 +159,21 @@ enum {
  */
 #define SPLICE_F_FD_IN_FIXED   (1U << 31) /* the last bit of __u32 */
 
+/*
+ * 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_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)
+
 /*
  * IO completion data structure (Completion Queue Entry)
  */
@@ -172,8 +187,10 @@ 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,