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	*/			*/

	#ifndef _BLOCK_IF_H_			#ifndef _BLOCK_IF_H_
	#define _BLOCK_IF_H_			#define _BLOCK_IF_H_

	#include <sys/uio.h>			#include <sys/uio.h>
	#include <sys/unistd.h>			#include <sys/unistd.h>

	#define BLOCKIF_IOV_MAX 33 /* not practical to be IOV_MAX */			/*
				* BLOCKIF_IOV_MAX is the maximum number of scatter/gather entries in
				* a single request. BLOCKIF_RING_MAX is the maxmimum number of
				* pending requests that can be queued.
				*/
				#define BLOCKIF_IOV_MAX 128 /* not practical to be IOV_MAX */
				#define BLOCKIF_RING_MAX 128

	struct blockif_req {			struct blockif_req {
	int br_iovcnt;			int br_iovcnt;
	off_t br_offset;			off_t br_offset;
	ssize_t br_resid;			ssize_t br_resid;
	void (br_callback)(struct blockif_req req, int err);			void (br_callback)(struct blockif_req req, int err);
	void *br_param;			void *br_param;
	struct iovec br_iov[BLOCKIF_IOV_MAX];			struct iovec br_iov[BLOCKIF_IOV_MAX];
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