/* * 1999 Copyright (C) Pavel Machek, pavel@ucw.cz. This code is GPL. * 1999/11/04 Copyright (C) 1999 VMware, Inc. (Regis "HPReg" Duchesne) *            Made nbd_end_request() use the io_request_lock * 2001 Copyright (C) Steven Whitehouse *            New nbd_end_request() for compatibility with new linux block *            layer code. * 2003/06/24 Louis D. Langholtz <ldl@aros.net> *            Removed unneeded blksize_bits field from nbd_device struct. *            Cleanup PARANOIA usage & code. * 2004/02/19 Paul Clements *            Removed PARANOIA, plus various cleanup and comments * 2012/07/05 Jim Garlick *            Overhaul for 9P transport */ #ifndef LINUX_NBD_H#define LINUX_NBD_H #include <linux/types.h> #define NBD_SET_BLKSIZE	_IO( 0xab, 1 )#define NBD_SET_TIMEOUT _IO( 0xab, 2 )#define NBD_START	_IO( 0xab, 3 )#define NBD_STOP 	_IO( 0xab, 4 ) #define NBD_SET_OPTS	_IOW( 0xab, 10, char* )#define NBD_SET_ADDR	_IOW( 0xab, 11, char* )#define NBD_SET_PATH	_IOW( 0xab, 12, char* )  /* userspace doesn't need the nbd_device structure */#ifdef __KERNEL__ #include <linux/wait.h>#include <linux/mutex.h> /* values for flags field */#define NBD_READ_ONLY 0x0001#define NBD_WRITE_NOCHK 0x0002 struct request; struct p9_nbd_device {	int flags;	int magic; 	spinlock_t queue_lock;	struct list_head waiting_queue;	/* Requests to be sent */	wait_queue_head_t waiting_wq; 	struct task_struct *recov_kt;	wait_queue_head_t recov_wq; 	struct gendisk *disk;	int blksize;	u64 bytesize; 	int ses_count; 	char *p9_addr;	char *p9_opts;	char *p9_path;	int p9_timeout;}; #endif #endif