bridge: Add a flag to control unicast packet flood.

Add a flag to control flood of unicast traffic.  By default, flood is
on and the bridge will flood unicast traffic if it doesn't know
the destination.  When the flag is turned off, unicast traffic
without an FDB will not be forwarded to the specified port.

Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 8643809d8417..da05a2698cb5 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -222,6 +222,7 @@ enum {
         IFLA_BRPORT_PROTECT,    /* root port protection    */
         IFLA_BRPORT_FAST_LEAVE, /* multicast fast leave    */
         IFLA_BRPORT_LEARNING,   /* mac learning */
+        IFLA_BRPORT_UNICAST_FLOOD, /* flood unicast traffic */
         __IFLA_BRPORT_MAX
 };
 #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)