Re: [Qemu-devel] [PATCH v3 10/17] virtio-scsi: use standard-headers

[Paolo Bonzini <pbonzini@redhat.com>]

On 16/02/2015 22:36, Michael S. Tsirkin wrote:
> Drop duplicated code.
> 
> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
> ---
>  include/hw/virtio/virtio-scsi.h | 120 +++-------------------------------------
>  hw/scsi/virtio-scsi.c           |   1 +
>  2 files changed, 10 insertions(+), 111 deletions(-)
> 
> diff --git a/include/hw/virtio/virtio-scsi.h b/include/hw/virtio/virtio-scsi.h
> index bf17cc9..864070d 100644
> --- a/include/hw/virtio/virtio-scsi.h
> +++ b/include/hw/virtio/virtio-scsi.h
> @@ -14,6 +14,7 @@
>  #ifndef _QEMU_VIRTIO_SCSI_H
>  #define _QEMU_VIRTIO_SCSI_H
>  
> +#include "standard-headers/linux/virtio_scsi.h"

Acked-by: Paolo Bonzini <pbonzini@redhat.com>

>  #include "hw/virtio/virtio.h"
>  #include "hw/pci/pci.h"
>  #include "hw/scsi/scsi.h"
> @@ -28,15 +29,6 @@
>  #define VIRTIO_SCSI(obj) \
>          OBJECT_CHECK(VirtIOSCSI, (obj), TYPE_VIRTIO_SCSI)
>  
> -
> -/* The ID for virtio_scsi */
> -#define VIRTIO_ID_SCSI  8
> -
> -/* Feature Bits */
> -#define VIRTIO_SCSI_F_INOUT                    0
> -#define VIRTIO_SCSI_F_HOTPLUG                  1
> -#define VIRTIO_SCSI_F_CHANGE                   2
> -
>  #define VIRTIO_SCSI_VQ_SIZE     128
>  #define VIRTIO_SCSI_CDB_SIZE    32
>  #define VIRTIO_SCSI_SENSE_SIZE  96
> @@ -44,108 +36,14 @@
>  #define VIRTIO_SCSI_MAX_TARGET  255
>  #define VIRTIO_SCSI_MAX_LUN     16383
>  
> -/* Response codes */
> -#define VIRTIO_SCSI_S_OK                       0
> -#define VIRTIO_SCSI_S_OVERRUN                  1
> -#define VIRTIO_SCSI_S_ABORTED                  2
> -#define VIRTIO_SCSI_S_BAD_TARGET               3
> -#define VIRTIO_SCSI_S_RESET                    4
> -#define VIRTIO_SCSI_S_BUSY                     5
> -#define VIRTIO_SCSI_S_TRANSPORT_FAILURE        6
> -#define VIRTIO_SCSI_S_TARGET_FAILURE           7
> -#define VIRTIO_SCSI_S_NEXUS_FAILURE            8
> -#define VIRTIO_SCSI_S_FAILURE                  9
> -#define VIRTIO_SCSI_S_FUNCTION_SUCCEEDED       10
> -#define VIRTIO_SCSI_S_FUNCTION_REJECTED        11
> -#define VIRTIO_SCSI_S_INCORRECT_LUN            12
> -
> -/* Controlq type codes.  */
> -#define VIRTIO_SCSI_T_TMF                      0
> -#define VIRTIO_SCSI_T_AN_QUERY                 1
> -#define VIRTIO_SCSI_T_AN_SUBSCRIBE             2
> -
> -/* Valid TMF subtypes.  */
> -#define VIRTIO_SCSI_T_TMF_ABORT_TASK           0
> -#define VIRTIO_SCSI_T_TMF_ABORT_TASK_SET       1
> -#define VIRTIO_SCSI_T_TMF_CLEAR_ACA            2
> -#define VIRTIO_SCSI_T_TMF_CLEAR_TASK_SET       3
> -#define VIRTIO_SCSI_T_TMF_I_T_NEXUS_RESET      4
> -#define VIRTIO_SCSI_T_TMF_LOGICAL_UNIT_RESET   5
> -#define VIRTIO_SCSI_T_TMF_QUERY_TASK           6
> -#define VIRTIO_SCSI_T_TMF_QUERY_TASK_SET       7
> -
> -/* Events.  */
> -#define VIRTIO_SCSI_T_EVENTS_MISSED            0x80000000
> -#define VIRTIO_SCSI_T_NO_EVENT                 0
> -#define VIRTIO_SCSI_T_TRANSPORT_RESET          1
> -#define VIRTIO_SCSI_T_ASYNC_NOTIFY             2
> -#define VIRTIO_SCSI_T_PARAM_CHANGE             3
> -
> -/* Reasons for transport reset event */
> -#define VIRTIO_SCSI_EVT_RESET_HARD             0
> -#define VIRTIO_SCSI_EVT_RESET_RESCAN           1
> -#define VIRTIO_SCSI_EVT_RESET_REMOVED          2
> -
> -/* SCSI command request, followed by CDB and data-out */
> -typedef struct {
> -    uint8_t lun[8];              /* Logical Unit Number */
> -    uint64_t tag;                /* Command identifier */
> -    uint8_t task_attr;           /* Task attribute */
> -    uint8_t prio;
> -    uint8_t crn;
> -} QEMU_PACKED VirtIOSCSICmdReq;
> -
> -/* Response, followed by sense data and data-in */
> -typedef struct {
> -    uint32_t sense_len;          /* Sense data length */
> -    uint32_t resid;              /* Residual bytes in data buffer */
> -    uint16_t status_qualifier;   /* Status qualifier */
> -    uint8_t status;              /* Command completion status */
> -    uint8_t response;            /* Response values */
> -} QEMU_PACKED VirtIOSCSICmdResp;
> -
> -/* Task Management Request */
> -typedef struct {
> -    uint32_t type;
> -    uint32_t subtype;
> -    uint8_t lun[8];
> -    uint64_t tag;
> -} QEMU_PACKED VirtIOSCSICtrlTMFReq;
> -
> -typedef struct {
> -    uint8_t response;
> -} QEMU_PACKED VirtIOSCSICtrlTMFResp;
> -
> -/* Asynchronous notification query/subscription */
> -typedef struct {
> -    uint32_t type;
> -    uint8_t lun[8];
> -    uint32_t event_requested;
> -} QEMU_PACKED VirtIOSCSICtrlANReq;
> -
> -typedef struct {
> -    uint32_t event_actual;
> -    uint8_t response;
> -} QEMU_PACKED VirtIOSCSICtrlANResp;
> -
> -typedef struct {
> -    uint32_t event;
> -    uint8_t lun[8];
> -    uint32_t reason;
> -} QEMU_PACKED VirtIOSCSIEvent;
> -
> -typedef struct {
> -    uint32_t num_queues;
> -    uint32_t seg_max;
> -    uint32_t max_sectors;
> -    uint32_t cmd_per_lun;
> -    uint32_t event_info_size;
> -    uint32_t sense_size;
> -    uint32_t cdb_size;
> -    uint16_t max_channel;
> -    uint16_t max_target;
> -    uint32_t max_lun;
> -} QEMU_PACKED VirtIOSCSIConfig;
> +typedef struct virtio_scsi_cmd_req VirtIOSCSICmdReq;
> +typedef struct virtio_scsi_cmd_resp VirtIOSCSICmdResp;
> +typedef struct virtio_scsi_ctrl_tmf_req VirtIOSCSICtrlTMFReq;
> +typedef struct virtio_scsi_ctrl_tmf_resp VirtIOSCSICtrlTMFResp;
> +typedef struct virtio_scsi_ctrl_an_req VirtIOSCSICtrlANReq;
> +typedef struct virtio_scsi_ctrl_an_resp VirtIOSCSICtrlANResp;
> +typedef struct virtio_scsi_event VirtIOSCSIEvent;
> +typedef struct virtio_scsi_config VirtIOSCSIConfig;
>  
>  struct VirtIOSCSIConf {
>      uint32_t num_queues;
> diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c
> index 9e2c718..d18654e 100644
> --- a/hw/scsi/virtio-scsi.c
> +++ b/hw/scsi/virtio-scsi.c
> @@ -13,6 +13,7 @@
>   *
>   */
>  
> +#include "standard-headers/linux/virtio_ids.h"
>  #include "hw/virtio/virtio-scsi.h"
>  #include "qemu/error-report.h"
>  #include "qemu/iov.h"
>