net: arc_emac: don't pass multicast packets to kernel in non-multicast mode

The patch disable capturing multicast packets when multicast mode
disabled for ethernet ('ifconfig eth0 -multicast'). In that case
no multicast packet will be passed to kernel.

Signed-off-by: Alexander Kochetkov <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

diff --git a/drivers/net/ethernet/arc/emac_main.c b/drivers/net/ethernet/arc/emac_main.c
index 2e4ee86a7e514407c152ec9b2e6871765aab6be1..be865b4dada2c65e7089ca4147ef47758698dc51 100644 (file)
--- a/drivers/net/ethernet/arc/emac_main.c
+++ b/drivers/net/ethernet/arc/emac_main.c
@@ -460,7 +460,7 @@ static void arc_emac_set_rx_mode(struct net_device *ndev)
                if (ndev->flags & IFF_ALLMULTI) {
                        arc_reg_set(priv, R_LAFL, ~0);
                        arc_reg_set(priv, R_LAFH, ~0);
-               } else {
+               } else if (ndev->flags & IFF_MULTICAST) {
                        struct netdev_hw_addr *ha;
                        unsigned int filter[2] = { 0, 0 };
                        int bit;
@@ -472,6 +472,9 @@ static void arc_emac_set_rx_mode(struct net_device *ndev)
 
                        arc_reg_set(priv, R_LAFL, filter[0]);
                        arc_reg_set(priv, R_LAFH, filter[1]);
+               } else {
+                       arc_reg_set(priv, R_LAFL, 0);
+                       arc_reg_set(priv, R_LAFH, 0);
                }
        }
 }