iscsi: Use struct scsi_lun in iscsi structs instead of u8[8]

struct scsi_lun is also just a struct with an array of 8 octets (64 bits)
but using it instead in iscsi structs lets us call scsilun_to_int
without a cast, and also lets us copy it using assignment, instead of
memcpy().

Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/include/scsi/iscsi_proto.h b/include/scsi/iscsi_proto.h
index a9c9058..f5f8353 100644
--- a/include/scsi/iscsi_proto.h
+++ b/include/scsi/iscsi_proto.h
@@ -60,7 +60,7 @@
 	uint8_t		rsvd2[2];
 	uint8_t		hlength;	/* AHSs total length */
 	uint8_t		dlength[3];	/* Data length */
-	uint8_t		lun[8];
+	struct scsi_lun	lun;
 	itt_t		itt;		/* Initiator Task Tag, opaque for target */
 	__be32		ttt;		/* Target Task Tag */
 	__be32		statsn;
@@ -122,7 +122,7 @@
 	__be16 rsvd2;
 	uint8_t hlength;
 	uint8_t dlength[3];
-	uint8_t lun[8];
+	struct scsi_lun lun;
 	itt_t	 itt;	/* Initiator Task Tag */
 	__be32 data_length;
 	__be32 cmdsn;
@@ -198,7 +198,7 @@
 	uint8_t rsvd2[2];
 	uint8_t rsvd3;
 	uint8_t dlength[3];
-	uint8_t lun[8];
+	struct scsi_lun	lun;
 	uint8_t rsvd4[8];
 	__be32	statsn;
 	__be32	exp_cmdsn;
@@ -226,7 +226,7 @@
 	__be16	rsvd2;
 	uint8_t rsvd3;
 	uint8_t dlength[3];
-	uint8_t lun[8];
+	struct scsi_lun	lun;
 	itt_t	 itt;	/* Initiator Task Tag */
 	__be32	ttt;	/* Target Transfer Tag */
 	__be32	cmdsn;
@@ -241,7 +241,7 @@
 	__be16	rsvd2;
 	uint8_t rsvd3;
 	uint8_t dlength[3];
-	uint8_t lun[8];
+	struct scsi_lun	lun;
 	itt_t	 itt;	/* Initiator Task Tag */
 	__be32	ttt;	/* Target Transfer Tag */
 	__be32	statsn;
@@ -257,7 +257,7 @@
 	uint8_t rsvd1[2];
 	uint8_t hlength;
 	uint8_t dlength[3];
-	uint8_t lun[8];
+	struct scsi_lun lun;
 	itt_t	 itt;	/* Initiator Task Tag */
 	itt_t	 rtt;	/* Reference Task Tag */
 	__be32	cmdsn;
@@ -315,7 +315,7 @@
 	uint8_t rsvd2[2];
 	uint8_t	hlength;
 	uint8_t	dlength[3];
-	uint8_t lun[8];
+	struct scsi_lun	lun;
 	itt_t	 itt;	/* Initiator Task Tag */
 	__be32	ttt;	/* Target Transfer Tag */
 	__be32	statsn;
@@ -333,7 +333,7 @@
 	uint8_t rsvd2[2];
 	uint8_t rsvd3;
 	uint8_t dlength[3];
-	uint8_t lun[8];
+	struct scsi_lun lun;
 	itt_t	 itt;
 	__be32	ttt;
 	__be32	rsvd4;
@@ -353,7 +353,7 @@
 	uint8_t cmd_status;
 	uint8_t hlength;
 	uint8_t dlength[3];
-	uint8_t lun[8];
+	struct scsi_lun	lun;
 	itt_t	 itt;
 	__be32	ttt;
 	__be32	statsn;