Re: [Qemu-devel] [PATCH v2 1/9] virtio-net: use aliases instead of duplicate qdev properties

["Michael S. Tsirkin" <mst@redhat.com>]

On Mon, Sep 15, 2014 at 01:03:24AM +0000, Gonglei (Arei) wrote:
> > > diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
> > > index ddb5da1..6722156 100644
> > > --- a/hw/virtio/virtio-pci.c
> > > +++ b/hw/virtio/virtio-pci.c
> > > @@ -1414,8 +1414,6 @@ static Property virtio_net_properties[] = {
> > >                      VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false),
> > >      DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
> > >      DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy, host_features),
> > > -    DEFINE_NIC_PROPERTIES(VirtIONetPCI, vdev.nic_conf),
> > > -    DEFINE_VIRTIO_NET_PROPERTIES(VirtIONetPCI, vdev.net_conf),
> > >      DEFINE_PROP_END_OF_LIST(),
> > >  };
> > >
> > > @@ -1456,6 +1454,7 @@ static void virtio_net_pci_instance_init(Object
> > *obj)
> > >      VirtIONetPCI *dev = VIRTIO_NET_PCI(obj);
> > >      object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_NET);
> > >      object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev),
> > NULL);
> > > +    qdev_alias_all_properties(DEVICE(&dev->vdev), obj);
> > >  }
> > >
> > >  static const TypeInfo virtio_net_pci_info = {
> > 
> > Does -device virtio-net-pci,? still list e.g. the mac property with this
> > patch?
> > 
> Yes. Please see the properties of virtio-net-pci with this patch:
> 
> #./qemu-system-x86_64 -enable-kvm -m 4096 -smp 4 -name redhat6.2 -drive file=/home/redhat6.2, \ 
> if=none,id=drive-ide0-0-0 -device ide-hd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 \
> -drive file=/mnt/sdb/gonglei/iso/rhel-server-7.0-x86_64-dvd.iso,if=none,id=drive-ide0-0-1 \
> -device ide-cd,bus=ide.0,unit=1,drive=drive-ide0-0-1,id=ide0-0-1,bootindex=4 -vnc 0.0.0.0:10 \
> -netdev type=user,id=net0 -device virtio-net-pci,netdev=net0,bootindex=3,id=nic1 -monitor stdio
> QEMU 2.1.50 monitor - type 'help' for more information
> (qemu) qom-list nic1
> virtio-net-pci.rom[0] (child<qemu:memory-region>)
> virtio-pci[0] (child<qemu:memory-region>)
> msix-pba[0] (child<qemu:memory-region>)
> msix-table[0] (child<qemu:memory-region>)
> virtio-net-pci-msix[0] (child<qemu:memory-region>)
> virtio-bus (child<virtio-pci-bus>)
> bus master[0] (child<qemu:memory-region>)
> bootindex (int)
> tx (str)
> x-txburst (int32)
> x-txtimer (uint32)
> netdev (str)
> vlan (int32)
> mac (str)

This is a regression though.
Before:

-virtio-net-pci.netdev=netdev
-virtio-net-pci.vlan=vlan
-virtio-net-pci.mac=macaddr

After

+virtio-net-pci.netdev=str
+virtio-net-pci.vlan=int32
+virtio-net-pci.mac=str

Compare to e1000:
e1000.netdev=netdev
e1000.vlan=vlan
e1000.mac=macaddr

-- 
MST