[deliverable/linux.git] / include / linux / nbd.h

/*
 * 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
 */
#ifndef LINUX_NBD_H
#define LINUX_NBD_H


#include <linux/wait.h>
#include <linux/mutex.h>
#include <uapi/linux/nbd.h>

struct request;

struct nbd_device {
	int flags;
	int harderror;		/* Code of hard error			*/
	struct socket * sock;
	struct file * file; 	/* If == NULL, device is not ready, yet	*/
	int magic;

	spinlock_t queue_lock;
	struct list_head queue_head;	/* Requests waiting result */
	struct request *active_req;
	wait_queue_head_t active_wq;
	struct list_head waiting_queue;	/* Requests to be sent */
	wait_queue_head_t waiting_wq;

	struct mutex tx_lock;
	struct gendisk *disk;
	int blksize;
	u64 bytesize;
	pid_t pid; /* pid of nbd-client, if attached */
	int xmit_timeout;
};

#endif
Commit	Line	Data
	1	/*
	2	* 1999 Copyright (C) Pavel Machek, pavel@ucw.cz. This code is GPL.
	3	* 1999/11/04 Copyright (C) 1999 VMware, Inc. (Regis "HPReg" Duchesne)
	4	* Made nbd_end_request() use the io_request_lock
	5	* 2001 Copyright (C) Steven Whitehouse
	6	* New nbd_end_request() for compatibility with new linux block
	7	* layer code.
	8	* 2003/06/24 Louis D. Langholtz <ldl@aros.net>
	9	* Removed unneeded blksize_bits field from nbd_device struct.
	10	* Cleanup PARANOIA usage & code.
	11	* 2004/02/19 Paul Clements
	12	* Removed PARANOIA, plus various cleanup and comments
	13	*/
	14	#ifndef LINUX_NBD_H
	15	#define LINUX_NBD_H
	16
	17
	18	#include <linux/wait.h>
	19	#include <linux/mutex.h>
	20	#include <uapi/linux/nbd.h>
	21
	22	struct request;
	23
	24	struct nbd_device {
	25	int flags;
	26	int harderror; /* Code of hard error */
	27	struct socket * sock;
	28	struct file * file; /* If == NULL, device is not ready, yet */
	29	int magic;
	30
	31	spinlock_t queue_lock;
	32	struct list_head queue_head; /* Requests waiting result */
	33	struct request *active_req;
	34	wait_queue_head_t active_wq;
	35	struct list_head waiting_queue; /* Requests to be sent */
	36	wait_queue_head_t waiting_wq;
	37
	38	struct mutex tx_lock;
	39	struct gendisk *disk;
	40	int blksize;
	41	u64 bytesize;
	42	pid_t pid; /* pid of nbd-client, if attached */
	43	int xmit_timeout;
	44	};
	45
	46	#endif