[Qemu-devel] [PULL 07/42] virtio-net: no writeable mac for virtio-1

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

From: Cornelia Huck <cornelia.huck@de.ibm.com>

Devices operating as virtio 1.0 may not allow writes to the mac
address in config space.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
---
 hw/net/virtio-net.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index 0d3bf0f..e2d2ab5 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -87,6 +87,7 @@ static void virtio_net_set_config(VirtIODevice *vdev, const uint8_t *config)
     memcpy(&netcfg, config, n->config_size);
 
     if (!virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_MAC_ADDR) &&
+        !virtio_has_feature(vdev, VIRTIO_F_VERSION_1) &&
         memcmp(netcfg.mac, n->mac, ETH_ALEN)) {
         memcpy(n->mac, netcfg.mac, ETH_ALEN);
         qemu_format_nic_info_str(qemu_get_queue(n->nic), n->mac);
-- 
MST