diff options
Diffstat (limited to 'original/uapi/linux/io_uring.h')
| -rw-r--r-- | original/uapi/linux/io_uring.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/original/uapi/linux/io_uring.h b/original/uapi/linux/io_uring.h index 6b83177..2780bce 100644 --- a/original/uapi/linux/io_uring.h +++ b/original/uapi/linux/io_uring.h @@ -10,7 +10,15 @@ #include <linux/fs.h> #include <linux/types.h> +/* + * this file is shared with liburing and that has to autodetect + * if linux/time_types.h is available or not, it can + * define UAPI_LINUX_IO_URING_H_SKIP_LINUX_TIME_TYPES_H + * if linux/time_types.h is not available + */ +#ifndef UAPI_LINUX_IO_URING_H_SKIP_LINUX_TIME_TYPES_H #include <linux/time_types.h> +#endif #ifdef __cplusplus extern "C" { @@ -56,6 +64,7 @@ struct io_uring_sqe { __u32 hardlink_flags; __u32 xattr_flags; __u32 msg_ring_flags; + __u32 uring_cmd_flags; }; __u64 user_data; /* data to be passed back at completion time */ /* pack this to avoid bogus arm OABI complaints */ @@ -157,6 +166,13 @@ enum { */ #define IORING_SETUP_SINGLE_ISSUER (1U << 12) +/* + * Defer running task work to get events. + * Rather than running bits of task work whenever the task transitions + * try to do it just before it is needed. + */ +#define IORING_SETUP_DEFER_TASKRUN (1U << 13) + enum io_uring_op { IORING_OP_NOP, IORING_OP_READV, @@ -206,12 +222,21 @@ enum io_uring_op { IORING_OP_SOCKET, IORING_OP_URING_CMD, IORING_OP_SEND_ZC, + IORING_OP_SENDMSG_ZC, /* this goes last, obviously */ IORING_OP_LAST, }; /* + * sqe->uring_cmd_flags + * IORING_URING_CMD_FIXED use registered buffer; pass this flag + * along with setting sqe->buf_index. + */ +#define IORING_URING_CMD_FIXED (1U << 0) + + +/* * sqe->fsync_flags */ #define IORING_FSYNC_DATASYNC (1U << 0) @@ -279,10 +304,28 @@ enum io_uring_op { * * IORING_RECVSEND_FIXED_BUF Use registered buffers, the index is stored in * the buf_index field. + * + * IORING_SEND_ZC_REPORT_USAGE + * If set, SEND[MSG]_ZC should report + * the zerocopy usage in cqe.res + * for the IORING_CQE_F_NOTIF cqe. + * 0 is reported if zerocopy was actually possible. + * IORING_NOTIF_USAGE_ZC_COPIED if data was copied + * (at least partially). */ #define IORING_RECVSEND_POLL_FIRST (1U << 0) #define IORING_RECV_MULTISHOT (1U << 1) #define IORING_RECVSEND_FIXED_BUF (1U << 2) +#define IORING_SEND_ZC_REPORT_USAGE (1U << 3) + +/* + * cqe.res for IORING_CQE_F_NOTIF if + * IORING_SEND_ZC_REPORT_USAGE was requested + * + * It should be treated as a flag, all other + * bits of cqe.res should be treated as reserved! + */ +#define IORING_NOTIF_USAGE_ZC_COPIED (1U << 31) /* * accept flags stored in sqe->ioprio |