From f93c84e1b07474a7d776403b3516feeff4f3c933 Mon Sep 17 00:00:00 2001
From: Jens Axboe <axboe@kernel.dk>
Date: Tue, 8 Jan 2019 06:51:07 -0700
Subject: Initial commit

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 src/liburing.h | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 src/liburing.h

(limited to 'src/liburing.h')

diff --git a/src/liburing.h b/src/liburing.h
new file mode 100644
index 0000000..454591a
--- /dev/null
+++ b/src/liburing.h
@@ -0,0 +1,57 @@
+#ifndef LIB_URING_H
+#define LIB_URING_H
+
+#include <sys/uio.h>
+#include "io_uring.h"
+
+/*
+ * Library interface to io_uring
+ */
+struct io_uring_sq {
+	unsigned *khead;
+	unsigned *ktail;
+	unsigned *kring_mask;
+	unsigned *kring_entries;
+	unsigned *kflags;
+	unsigned *kdropped;
+	unsigned *array;
+	struct io_uring_iocb *iocbs;
+
+	unsigned iocb_head;
+	unsigned iocb_tail;
+
+	size_t ring_sz;
+};
+
+struct io_uring_cq {
+	unsigned *khead;
+	unsigned *ktail;
+	unsigned *kring_mask;
+	unsigned *kring_entries;
+	unsigned *koverflow;
+	struct io_uring_event *events;
+
+	size_t ring_sz;
+};
+
+/*
+ * System calls
+ */
+extern int io_uring_setup(unsigned entries, struct iovec *iovecs,
+	struct io_uring_params *p);
+extern int io_uring_enter(unsigned fd, unsigned to_submit,
+	unsigned min_complete, unsigned flags);
+
+/*
+ * Library interface
+ */
+extern int io_uring_queue_init(unsigned entries, struct io_uring_params *p,
+	struct iovec *iovecs, struct io_uring_sq *sq, struct io_uring_cq *cq);
+extern void io_uring_queue_exit(int fd, struct io_uring_sq *sq,
+	struct io_uring_cq *cq);
+extern int io_uring_get_completion(int fd, struct io_uring_cq *cq,
+	struct io_uring_event **ev_ptr);
+extern int io_uring_submit(int fd, struct io_uring_sq *sq);
+extern struct io_uring_iocb *io_uring_get_iocb(struct io_uring_sq *sq);
+
+#endif
-- 
cgit