#ifndef LINUX_NBD_H
#define LINUX_NBD_H
-#include <linux/types.h>
+//#include <linux/types.h>
#define NBD_SET_SOCK _IO( 0xab, 0 )
#define NBD_SET_BLKSIZE _IO( 0xab, 1 )
#define NBD_SET_SIZE_BLOCKS _IO( 0xab, 7 )
#define NBD_DISCONNECT _IO( 0xab, 8 )
#define NBD_SET_TIMEOUT _IO( 0xab, 9 )
+#define NBD_SET_FLAGS _IO( 0xab, 10 )
enum {
NBD_CMD_READ = 0,
NBD_CMD_WRITE = 1,
- NBD_CMD_DISC = 2
+ NBD_CMD_DISC = 2,
+ NBD_CMD_FLUSH = 3
};
+#define NBD_CMD_MASK_COMMAND 0x0000ffff
+#define NBD_CMD_FLAG_FUA (1<<16)
+
+/* values for flags field */
+#define NBD_FLAG_HAS_FLAGS (1 << 0) /* Flags are there */
+#define NBD_FLAG_READ_ONLY (1 << 1) /* Device is read-only */
+#define NBD_FLAG_SEND_FLUSH (1 << 2) /* Send FLUSH */
+#define NBD_FLAG_SEND_FUA (1 << 3) /* Send FUA (Force Unit Access) */
+#define NBD_FLAG_ROTATIONAL (1 << 4) /* Use elevator algorithm - rotational media */
+
#define nbd_cmd(req) ((req)->cmd[0])
/* userspace doesn't need the nbd_device structure */