Add binject IO engine

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

1 files changed, 65 insertions, 0 deletions

diff --git a/os/binject.h b/os/binject.h
new file mode 100644
index 00000000..1f358f36
--- /dev/null
+++ b/os/binject.h
@@ -0,0 +1,65 @@
+#ifndef BINJECT_H
+#define BINJECT_H
+
+#include <linux/types.h>
+
+#define BINJECT_MAGIC		0x89
+#define BINJECT_VER		0x01
+#define BINJECT_MAGIC_SHIFT	8
+#define BINJECT_VER_MASK	((1 << BINJECT_MAGIC_SHIFT) - 1)
+
+struct b_user_cmd {
+	__u16 magic;	/* INPUT */
+	__u16 type;	/* INPUT */
+	__u32 error;	/* OUTPUT */
+	__u32 flags;	/* INPUT */
+	__u32 len;	/* INPUT */
+	__u64 offset;	/* INPUT */
+	__u64 buf;	/* INPUT */
+	__u64 usr_ptr;	/* PASSED THROUGH */
+	__u64 nsec;	/* OUTPUT */
+};
+
+struct b_ioctl_cmd {
+	int fd;
+	int minor;
+};
+
+enum {
+	B_TYPE_READ		= 0,
+	B_TYPE_WRITE,
+	B_TYPE_DISCARD,
+	B_TYPE_READVOID,
+	B_TYPE_WRITEZERO,
+	B_TYPE_NR
+};
+
+enum {
+	__B_FLAG_SYNC	= 0,
+	__B_FLAG_UNPLUG,
+	__B_FLAG_NOIDLE,
+	__B_FLAG_BARRIER,
+	__B_FLAG_META,
+	__B_FLAG_RAHEAD,
+	__B_FLAG_FAILFAST_DEV,
+	__B_FLAG_FAILFAST_TRANSPORT,
+	__B_FLAG_FAILFAST_DRIVER,
+	__B_FLAG_NR,
+
+	B_FLAG_SYNC			= 1 << __B_FLAG_SYNC,
+	B_FLAG_UNPLUG			= 1 << __B_FLAG_UNPLUG,
+	B_FLAG_NOIDLE			= 1 << __B_FLAG_NOIDLE,
+	B_FLAG_BARRIER			= 1 << __B_FLAG_BARRIER,
+	B_FLAG_META			= 1 << __B_FLAG_META,
+	B_FLAG_RAHEAD			= 1 << __B_FLAG_RAHEAD,
+	B_FLAG_FAILFAST_DEV		= 1 << __B_FLAG_FAILFAST_DEV,
+	B_FLAG_FAILFAST_TRANSPORT	= 1 << __B_FLAG_FAILFAST_TRANSPORT,
+	B_FLAG_FAILFAST_DRIVER		= 1 << __B_FLAG_FAILFAST_DRIVER,
+};
+
+static inline void binject_buc_set_magic(struct b_user_cmd *buc)
+{
+	buc->magic = (BINJECT_MAGIC << BINJECT_MAGIC_SHIFT) | BINJECT_VER;
+}
+
+#endif