qemu:virtio-net: Allow setting the MAC address via set_config (Alex Williamson)

Allow the guest to write to the MAC address config space and update
the network info string when it does.  Rename get_config for symmetry.

Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6534 c046a42c-6fe2-441c-8c8c-71466251a162

diff --git a/hw/virtio-net.c b/hw/virtio-net.c
index 2eb52b866ab0647ad5fb15b07206ad09d1675ca7..105daa9b2d830696c2b3c2f579dd8b13a54d7047 100644 (file)
--- a/hw/virtio-net.c
+++ b/hw/virtio-net.c
@@ -40,7 +40,7 @@ static VirtIONet *to_virtio_net(VirtIODevice *vdev)
     return (VirtIONet *)vdev;
 }
 
-static void virtio_net_update_config(VirtIODevice *vdev, uint8_t *config)
+static void virtio_net_get_config(VirtIODevice *vdev, uint8_t *config)
 {
     VirtIONet *n = to_virtio_net(vdev);
     struct virtio_net_config netcfg;
@@ -50,6 +50,19 @@ static void virtio_net_update_config(VirtIODevice *vdev, uint8_t *config)
     memcpy(config, &netcfg, sizeof(netcfg));
 }
 
+static void virtio_net_set_config(VirtIODevice *vdev, const uint8_t *config)
+{
+    VirtIONet *n = to_virtio_net(vdev);
+    struct virtio_net_config netcfg;
+
+    memcpy(&netcfg, config, sizeof(netcfg));
+
+    if (memcmp(netcfg.mac, n->mac, 6)) {
+        memcpy(n->mac, netcfg.mac, 6);
+        qemu_format_nic_info_str(n->vc, n->mac);
+    }
+}
+
 static void virtio_net_set_link_status(VLANClientState *vc)
 {
     VirtIONet *n = vc->opaque;
@@ -337,7 +350,8 @@ void virtio_net_init(PCIBus *bus, NICInfo *nd, int devfn)
     if (!n)
         return;
 
-    n->vdev.get_config = virtio_net_update_config;
+    n->vdev.get_config = virtio_net_get_config;
+    n->vdev.set_config = virtio_net_set_config;
     n->vdev.get_features = virtio_net_get_features;
     n->vdev.set_features = virtio_net_set_features;
     n->rx_vq = virtio_add_queue(&n->vdev, 256, virtio_net_handle_rx);