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virtio-net: no writeable mac for virtio-1 

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>
This commit is contained in:
Cornelia Huck 2015-06-04 12:34:16 +02:00 committed by Michael S. Tsirkin
parent 0b352fd680
commit b6a3cddb22
1 changed files with 1 additions and 0 deletions
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1
hw/net/virtio-net.c
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@ -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);