@@ -922,6 +922,35 @@ static void virtio_net_cleanup(VLANClientState *nc)
n->nic = NULL;
}
+static void virtio_net_announce(VLANClientState *nc)
+{
+ uint8_t buf[60];
+ bool has_vlan = false;
+ int len;
+ int i;
+ VirtIONet *n = DO_UPCAST(NICState, nc, nc)->opaque;
+
+ len = announce_self_create(buf, &n->mac[0]);
+ qemu_send_packet_raw(nc, buf, len);
+
+ for (i = 0; i < (MAX_VLAN >> 5); i++) {
+ if (n->vlans[i] & ~0u) {
+ has_vlan = true;
+ break;
+ }
+ }
+
+ if (!has_vlan) {
+ /* It's safe to announce the rest of mac addresses when there's no vlan
+ * in guest */
+ for (i = 0; i < n->mac_table.in_use; i++) {
+ mac_debug(&n->mac_table.macs[i * ETH_ALEN]);
+ len = announce_self_create(buf, &n->mac_table.macs[i * ETH_ALEN]);
+ qemu_send_packet_raw(nc, buf, len);
+ }
+ }
+}
+
static NetClientInfo net_virtio_info = {
.type = NET_CLIENT_TYPE_NIC,
.size = sizeof(NICState),
@@ -929,6 +958,7 @@ static NetClientInfo net_virtio_info = {
.receive = virtio_net_receive,
.cleanup = virtio_net_cleanup,
.link_status_changed = virtio_net_set_link_status,
+ .announce = virtio_net_announce,
};
static void virtio_net_set_status(struct VirtIODevice *vdev, uint8_t status)
This patch tries to announce every mac address for one virtio nic after migration. The primary mac address is announced unconditionally and other macaddress are only announced when no vlan is configurated in guest. For guest with vlan, what we need do is to send tagged gratutious packet, but current virtio-net implementation can not distinguish the mapping between mac addresses and vlan. And I believe this function must be implemented with the modifications of guest drivers ( vlan_dev_info ). Signed-off-by: Jason Wang <jasowang@redhat.com> --- hw/virtio-net.c | 30 ++++++++++++++++++++++++++++++ 1 files changed, 30 insertions(+), 0 deletions(-)