Re: [Qemu-devel] [PATCH v4 03/10] virtio-scsi: moving host_features from properties to transport properties.

[Cornelia Huck <cornelia.huck@de.ibm.com>]

On Wed, 20 Mar 2013 15:07:36 +0100
fred.konrad@greensocs.com wrote:

> From: KONRAD Frederic <fred.konrad@greensocs.com>
> 
> host_features field is part of the transport device. So move all the
> host_features related properties into transport device.
> 
> Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
> ---
>  hw/s390x/s390-virtio-bus.c | 7 ++++++-
>  hw/s390x/virtio-ccw.c      | 7 ++++++-
>  hw/virtio-pci.c            | 7 ++++++-
>  hw/virtio-scsi.h           | 9 +++------
>  4 files changed, 21 insertions(+), 9 deletions(-)
> 
> diff --git a/hw/s390x/s390-virtio-bus.c b/hw/s390x/s390-virtio-bus.c
> index 76bc99a..265d94f 100644
> --- a/hw/s390x/s390-virtio-bus.c
> +++ b/hw/s390x/s390-virtio-bus.c
> @@ -543,7 +543,12 @@ static const TypeInfo virtio_s390_device_info = {
>  };
> 
>  static Property s390_virtio_scsi_properties[] = {
> -    DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOS390Device, host_features, scsi),
> +    DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOS390Device, scsi),
> +    DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
> +    DEFINE_PROP_BIT("hotplug", VirtIOS390Device, host_features,
> +                    VIRTIO_SCSI_F_HOTPLUG, true),
> +    DEFINE_PROP_BIT("param_change", VirtIOS390Device, host_features,
> +                    VIRTIO_SCSI_F_CHANGE, true),
>      DEFINE_PROP_END_OF_LIST(),
>  };
> 
> diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
> index 9688835..71a51d9 100644
> --- a/hw/s390x/virtio-ccw.c
> +++ b/hw/s390x/virtio-ccw.c
> @@ -836,7 +836,12 @@ static const TypeInfo virtio_ccw_balloon = {
> 
>  static Property virtio_ccw_scsi_properties[] = {
>      DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
> -    DEFINE_VIRTIO_SCSI_PROPERTIES(VirtioCcwDevice, host_features[0], scsi),
> +    DEFINE_VIRTIO_SCSI_PROPERTIES(VirtioCcwDevice, scsi),
> +    DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
> +    DEFINE_PROP_BIT("hotplug", VirtioCcwDevice, host_features[0],
> +                    VIRTIO_SCSI_F_HOTPLUG, true),
> +    DEFINE_PROP_BIT("param_change", VirtioCcwDevice, host_features[0],
> +                    VIRTIO_SCSI_F_CHANGE, true),
>      DEFINE_PROP_END_OF_LIST(),
>  };
> 
> diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
> index f3ece78..0665b04 100644
> --- a/hw/virtio-pci.c
> +++ b/hw/virtio-pci.c
> @@ -1221,7 +1221,12 @@ static void virtio_scsi_exit_pci(PCIDevice *pci_dev)
>  static Property virtio_scsi_properties[] = {
>      DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
>      DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, DEV_NVECTORS_UNSPECIFIED),
> -    DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOPCIProxy, host_features, scsi),
> +    DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features),
> +    DEFINE_PROP_BIT("hotplug", VirtIOPCIProxy, host_features,
> +                    VIRTIO_SCSI_F_HOTPLUG, true),
> +    DEFINE_PROP_BIT("param_change", VirtIOPCIProxy, host_features,
> +                    VIRTIO_SCSI_F_CHANGE, true),
> +    DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOPCIProxy, scsi),
>      DEFINE_PROP_END_OF_LIST(),
>  };
> 
> diff --git a/hw/virtio-scsi.h b/hw/virtio-scsi.h
> index fb83b67..536c4c3 100644
> --- a/hw/virtio-scsi.h
> +++ b/hw/virtio-scsi.h
> @@ -47,12 +47,9 @@ typedef struct VirtIOSCSI {
>      VirtQueue **cmd_vqs;
>  } VirtIOSCSI;
> 
> -#define DEFINE_VIRTIO_SCSI_PROPERTIES(_state, _features_field, _conf_field) \
> -    DEFINE_VIRTIO_COMMON_FEATURES(_state, _features_field), \
> +#define DEFINE_VIRTIO_SCSI_PROPERTIES(_state, _conf_field) \
>      DEFINE_PROP_UINT32("num_queues", _state, _conf_field.num_queues, 1), \
> -    DEFINE_PROP_UINT32("max_sectors", _state, _conf_field.max_sectors, 0xFFFF), \
> -    DEFINE_PROP_UINT32("cmd_per_lun", _state, _conf_field.cmd_per_lun, 128), \
> -    DEFINE_PROP_BIT("hotplug", _state, _features_field, VIRTIO_SCSI_F_HOTPLUG, true), \
> -    DEFINE_PROP_BIT("param_change", _state, _features_field, VIRTIO_SCSI_F_CHANGE, true)
> +    DEFINE_PROP_UINT32("max_sectors", _state, _conf_field.max_sectors, 0xFFFF),\
> +    DEFINE_PROP_UINT32("cmd_per_lun", _state, _conf_field.cmd_per_lun, 128)

Would it make sense to add

#define DEFINE_VIRTIO_SCSI_FEATURES(_state, _features_field) \
	DEFINE_VIRTIO_COMMON_FEATURES(_state, _features_field), \
	DEFINE_PROP_BIT("hotplug", _state, _features_field, VIRTIO_SCSI_F_HOTPLUG, true), \
	DEFINE_PROP_BIT("param_change", _state, _features_field, VIRTIO_SCSI_F_CHANGE, true)

to avoid code duplication?

> 
>  #endif /* _QEMU_VIRTIO_SCSI_H */