Re: [Qemu-devel] [QEMU PATCH v4 1/3] virtio-net: remove layout assumptions for ctrl vq

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On Sat, Jan 19, 2013 at 09:54:26AM +0800, akong@xxxxxxxxxx wrote:
> From: "Michael S. Tsirkin" <mst@xxxxxxxxxx>
> 
> Virtio-net code makes assumption about virtqueue descriptor layout
> (e.g. sg[0] is the header, sg[1] is the data buffer).
> 
> This patch makes code not rely on the layout of descriptors.
> 
> Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
> Signed-off-by: Amos Kong <akong@xxxxxxxxxx>
> ---
>  hw/virtio-net.c | 128 ++++++++++++++++++++++++++++++++------------------------
>  1 file changed, 74 insertions(+), 54 deletions(-)

Had tested this patch with following scenarios:

VIRTIO_NET_CTRL_RX_MODE
1) ip link eth0 promisc on/off
2) ip link set eth0 allmulticast on/off
3) ip link set eth0 multicast on/off

VIRTIO_NET_CTRL_MAC
4) ifconfig eth0 hw ether 52:54:00:12:34:57
5) ping guest after joined guest into multicast
   group (225.0.0.1 ~ 225.0.0.10)

VIRTIO_NET_CTRL_VLAN
6) vconfig add eth0 2; vconfig rem eth0.2


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