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 05:49:42AM +0000, Gonglei (Arei) wrote:
> > From: Michael S. Tsirkin [mailto:mst@redhat.com]
> > Sent: Monday, September 15, 2014 1:36 PM
> > Subject: Re: [PATCH v2 1/9] virtio-net: use aliases instead of duplicate qdev
> > properties
> > 
> > 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
> 
> Sorry, I don't understand your meaning. :(

I applied your patch, and looked at the property types.

They should be netdev/vlan/macaddr.
Your patch makes them str/int32/str

-- 
MST