ibmveth: Add function to enable live MAC address changes

Add a function that will enable changing the MAC address
of an ibmveth interface while it is still running.

Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Reviewed-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/ibm/ibmveth.c b/drivers/net/ethernet/ibm/ibmveth.c
index 21978cc..072426a 100644 (file)
--- a/drivers/net/ethernet/ibm/ibmveth.c
+++ b/drivers/net/ethernet/ibm/ibmveth.c
@@ -1327,6 +1327,28 @@ static unsigned long ibmveth_get_desired_dma(struct vio_dev *vdev)
        return ret;
 }
 
+static int ibmveth_set_mac_addr(struct net_device *dev, void *p)
+{
+       struct ibmveth_adapter *adapter = netdev_priv(dev);
+       struct sockaddr *addr = p;
+       u64 mac_address;
+       int rc;
+
+       if (!is_valid_ether_addr(addr->sa_data))
+               return -EADDRNOTAVAIL;
+
+       mac_address = ibmveth_encode_mac_addr(addr->sa_data);
+       rc = h_change_logical_lan_mac(adapter->vdev->unit_address, mac_address);
+       if (rc) {
+               netdev_err(adapter->netdev, "h_change_logical_lan_mac failed with rc=%d\n", rc);
+               return rc;
+       }
+
+       ether_addr_copy(dev->dev_addr, addr->sa_data);
+
+       return 0;
+}
+
 static const struct net_device_ops ibmveth_netdev_ops = {
        .ndo_open               = ibmveth_open,
        .ndo_stop               = ibmveth_close,
@@ -1337,7 +1359,7 @@ static const struct net_device_ops ibmveth_netdev_ops = {
        .ndo_fix_features       = ibmveth_fix_features,
        .ndo_set_features       = ibmveth_set_features,
        .ndo_validate_addr      = eth_validate_addr,
-       .ndo_set_mac_address    = eth_mac_addr,
+       .ndo_set_mac_address    = ibmveth_set_mac_addr,
 #ifdef CONFIG_NET_POLL_CONTROLLER
        .ndo_poll_controller    = ibmveth_poll_controller,
 #endif