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Update to newer API

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- Fixed buffers are now available through io_uring_register()
- Various thread/wq options are now dead and automatic instead
- sqe->index is now sqe->buf_index
- Fixed buffers require flag, not separate opcode

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe
2019-01-10 14:28:10 -07:00
parent 6cdce17753
commit d5b4ae1c58
6 changed files with 43 additions and 23 deletions
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25
src/io_uring.h
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@@ -29,25 +29,27 @@ struct io_uring_sqe {
__kernel_rwf_t rw_flags;
__u32 __resv;
};
__u16 index; /* index into fixed buffers, if used */
__u16 buf_index; /* index into fixed buffers, if used */
__u16 __pad2[3];
__u64 data; /* data to be passed back at completion time */
};
/*
* sqe->flags
*/
#define IOSQE_FIXED_BUFFER (1 << 0) /* use fixed buffer */
/*
* io_uring_setup() flags
*/
#define IORING_SETUP_IOPOLL (1 << 0) /* io_context is polled */
#define IORING_SETUP_SQTHREAD (1 << 1) /* Use SQ thread */
#define IORING_SETUP_SQWQ (1 << 2) /* Use SQ workqueue */
#define IORING_SETUP_SQPOLL (1 << 3) /* SQ thread polls */
#define IORING_SETUP_SQPOLL (1 << 1) /* SQ poll thread */
#define IORING_SETUP_SQ_AFF (1 << 2) /* sq_thread_cpu is valid */
#define IORING_OP_READV 1
#define IORING_OP_WRITEV 2
#define IORING_OP_FSYNC 3
#define IORING_OP_FDSYNC 4
#define IORING_OP_READ_FIXED 5
#define IORING_OP_WRITE_FIXED 6
/*
* IO completion data structure (Completion Queue Entry)
@@ -114,4 +116,15 @@ struct io_uring_params {
struct io_cqring_offsets cq_off;
};
/*
* io_uring_register(2) opcodes and arguments
*/
#define IORING_REGISTER_BUFFERS 0
#define IORING_UNREGISTER_BUFFERS 1
struct io_uring_register_buffers {
struct iovec *iovecs;
unsigned nr_iovecs;
};
#endif