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Date: Thu, 17 Jan 2013 13:45:11 +0800
From: Amos Kong <akong@redhat.com>
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Subject: Re: [Qemu-devel] [QEMU PATCH v2] virtio-net: introduce a new
 macaddr control
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To: Rusty Russell <rusty@rustcorp.com.au>
Cc: virtualization@lists.linux-foundation.org, stefanha@redhat.com, qemu-devel@nongnu.org, kvm@vger.kernel.org, mst@redhat.com

On Thu, Jan 17, 2013 at 11:49:20AM +1030, Rusty Russell wrote:
> akong@redhat.com writes:
> > @@ -349,6 +351,14 @@ static int virtio_net_handle_mac(VirtIONet *n, uint8_t cmd,
> >  {
> >      struct virtio_net_ctrl_mac mac_data;
> >  
> > +    if (cmd == VIRTIO_NET_CTRL_MAC_ADDR_SET && elem->out_num == 2 &&
> > +        elem->out_sg[1].iov_len == ETH_ALEN) {
> > +        /* Set MAC address */
> > +        memcpy(n->mac, elem->out_sg[1].iov_base, elem->out_sg[1].iov_len);
> > +        qemu_format_nic_info_str(&n->nic->nc, n->mac);
> > +        return VIRTIO_NET_OK;
> > +    }
> 
> Does the rest of the net device still rely on the layout of descriptors?

No, only info string of net client relies on n->mac

> If so, OK, we'll fix them all together.  If not, this introduces a new
> one.
> 
> Cheers,
> Rusty.