gianfar: Enable changing mac addr when if up

Use device flag IFF_LIVE_ADDR_CHANGE to signal that
the device supports changing the hardware address when
the device is running.
This allows eth_mac_addr() to change the mac address
also when the network device's interface is open.
This capability is required by certain applications,
like bonding mode 6 (Adaptive Load Balancing).

Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
index 3c84e5a..ff87502 100644 (file)
--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -516,6 +516,15 @@ static struct net_device_stats *gfar_get_stats(struct net_device *dev)
        return &dev->stats;
 }
 
+static int gfar_set_mac_addr(struct net_device *dev, void *p)
+{
+       eth_mac_addr(dev, p);
+
+       gfar_set_mac_for_addr(dev, 0, dev->dev_addr);
+
+       return 0;
+}
+
 static const struct net_device_ops gfar_netdev_ops = {
        .ndo_open = gfar_enet_open,
        .ndo_start_xmit = gfar_start_xmit,
@@ -526,7 +535,7 @@ static const struct net_device_ops gfar_netdev_ops = {
        .ndo_tx_timeout = gfar_timeout,
        .ndo_do_ioctl = gfar_ioctl,
        .ndo_get_stats = gfar_get_stats,
-       .ndo_set_mac_address = eth_mac_addr,
+       .ndo_set_mac_address = gfar_set_mac_addr,
        .ndo_validate_addr = eth_validate_addr,
 #ifdef CONFIG_NET_POLL_CONTROLLER
        .ndo_poll_controller = gfar_netpoll,
@@ -1411,6 +1420,8 @@ static int gfar_probe(struct platform_device *ofdev)
                dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
        }
 
+       dev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
+
        gfar_init_addr_hash_table(priv);
 
        /* Insert receive time stamps into padding alignment bytes */