[PATCH 1/5] virtio_net: Allow setting the MAC address of the NIC
From: Alex Williamson <hidden>
Date: 2009-01-16 21:15:10
Also in:
kvm
Subsystem:
networking drivers, the rest, virtio net driver · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, "Michael S. Tsirkin", Jason Wang
Many physical NICs let the OS re-program the "hardware" MAC address. Virtual NICs should allow this too. Signed-off-by: Alex Williamson <redacted> --- drivers/net/virtio_net.c | 23 +++++++++++++++++++++-- 1 files changed, 21 insertions(+), 2 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 43f6523..e7700de 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c@@ -561,6 +561,22 @@ stop_queue: goto done; } +static int virtnet_set_mac_address(struct net_device *dev, void *p) +{ + struct virtnet_info *vi = netdev_priv(dev); + struct virtio_device *vdev = vi->vdev; + int ret; + + ret = eth_mac_addr(dev, p); + if (ret) + return ret; + + vdev->config->set(vdev, offsetof(struct virtio_net_config, mac), + dev->dev_addr, dev->addr_len); + + return 0; +} + #ifdef CONFIG_NET_POLL_CONTROLLER static void virtnet_netpoll(struct net_device *dev) {
@@ -629,7 +645,7 @@ static const struct net_device_ops virtnet_netdev = { .ndo_stop = virtnet_close, .ndo_start_xmit = start_xmit, .ndo_validate_addr = eth_validate_addr, - .ndo_set_mac_address = eth_mac_addr, + .ndo_set_mac_address = virtnet_set_mac_address, .ndo_change_mtu = virtnet_change_mtu, #ifdef CONFIG_NET_POLL_CONTROLLER .ndo_poll_controller = virtnet_netpoll,
@@ -677,8 +693,11 @@ static int virtnet_probe(struct virtio_device *vdev) vdev->config->get(vdev, offsetof(struct virtio_net_config, mac), dev->dev_addr, dev->addr_len); - } else + } else { random_ether_addr(dev->dev_addr); + vdev->config->set(vdev, offsetof(struct virtio_net_config, mac), + dev->dev_addr, dev->addr_len); + } /* Set up our device-specific information */ vi = netdev_priv(dev);