Update to newer io_uring API

[fio.git] / os / io_uring.h

diff --git a/os/io_uring.h b/os/io_uring.h
index 20e4c22e040d6023bef78e64cafca8694c629733..b07bbbb3dd656dc4fbd2f14bc867b11eca0d5b49 100644 (file)
--- a/os/io_uring.h
+++ b/os/io_uring.h
@@ -15,20 +15,23 @@
  * IO submission data structure (Submission Queue Entry)
  */
 struct io_uring_sqe {
-       __u8    opcode;
-       __u8    flags;
-       __u16   ioprio;
-       __s32   fd;
-       __u64   off;
+       __u8    opcode;         /* type of operation for this sqe */
+       __u8    flags;          /* as of now unused */
+       __u16   ioprio;         /* ioprio for the request */
+       __s32   fd;             /* file descriptor to do IO on */
+       __u64   off;            /* offset into file */
        union {
-               void    *addr;
+               void    *addr;  /* buffer or iovecs */
                __u64   __pad;
        };
-       __u32   len;
+       __u32   len;            /* buffer size or number of iovecs */
        union {
                __kernel_rwf_t  rw_flags;
                __u32           __resv;
        };
+       __u16   index;          /* index into fixed buffers, if used */
+       __u16   __pad2[3];
+       __u64   data;           /* data to be passed back at completion time */
 };
 
 /*
@@ -50,7 +53,7 @@ struct io_uring_sqe {
  * IO completion data structure (Completion Queue Entry)
  */
 struct io_uring_cqe {
-       __u64   index;          /* what sqe this event came from */
+       __u64   data;           /* sqe->data submission passed back */
        __s32   res;            /* result code for this event */
        __u32   flags;
 };