* this remains the same across the write regardless of 32/64 bit
  * note: it's patterned off the SCSI_PASS_THROUGH structure
  */
-#define CDB16GENERIC_LENGTH                    0x10
-
-#ifndef SENSE_BUFFER_SIZE
-#define SENSE_BUFFER_SIZE                      0x12
-#endif
-
-#define MAX_DATA_BUF_LEN_WITH_PADDING          0x14
+#define STORVSC_MAX_CMD_LEN                    0x10
+#define STORVSC_SENSE_BUFFER_SIZE              0x12
+#define STORVSC_MAX_BUF_LEN_WITH_PADDING       0x14
 
 struct vmscsi_request {
        u16 length;
        u32 data_transfer_length;
 
        union {
-               u8 cdb[CDB16GENERIC_LENGTH];
-               u8 sense_data[SENSE_BUFFER_SIZE];
-               u8 reserved_array[MAX_DATA_BUF_LEN_WITH_PADDING];
+               u8 cdb[STORVSC_MAX_CMD_LEN];
+               u8 sense_data[STORVSC_SENSE_BUFFER_SIZE];
+               u8 reserved_array[STORVSC_MAX_BUF_LEN_WITH_PADDING];
        };
 } __attribute((packed));
 
 #define STORVSC_MAX_LUNS_PER_TARGET                    64
 #define STORVSC_MAX_TARGETS                            1
 #define STORVSC_MAX_CHANNELS                           1
-#define STORVSC_MAX_CMD_LEN                            16
 
 /* Matches Windows-end */
 enum storvsc_request_type {
        vstor_packet->vm_srb.length = sizeof(struct vmscsi_request);
 
 
-       vstor_packet->vm_srb.sense_info_length = SENSE_BUFFER_SIZE;
+       vstor_packet->vm_srb.sense_info_length = STORVSC_SENSE_BUFFER_SIZE;
 
 
        vstor_packet->vm_srb.data_transfer_length =