Merge branch 'linus' into core/iommu

[linux-2.6-omap-h63xx.git] / drivers / net / tun.c

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index d7b81e4fdd5631c0c537cd971cad3bebb72bb38d..09fea31d3e360da7d79afeb25c399ef6286f4951 100644 (file)
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -157,10 +157,16 @@ static int update_filter(struct tap_filter *filter, void __user *arg)
 
        nexact = n;
 
-       /* The rest is hashed */
+       /* Remaining multicast addresses are hashed,
+        * unicast will leave the filter disabled. */
        memset(filter->mask, 0, sizeof(filter->mask));
-       for (; n < uf.count; n++)
+       for (; n < uf.count; n++) {
+               if (!is_multicast_ether_addr(addr[n].u)) {
+                       err = 0; /* no filter */
+                       goto done;
+               }
                addr_hash_set(filter->mask, addr[n].u);
+       }
 
        /* For ALLMULTI just set the mask to all ones.
         * This overrides the mask populated above. */