[BRIDGE]: flush forwarding table when device carrier off

Flush the forwarding table when carrier is lost. This helps for
availability because we don't want to forward to a downed device and
new packets may come in on other links.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 1 deletions

diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 3a73b8c94271..d9f04864d15d 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -128,7 +128,10 @@ void br_fdb_cleanup(unsigned long _data)
         mod_timer(&br->gc_timer, jiffies + HZ/10);
 }
 
-void br_fdb_delete_by_port(struct net_bridge *br, struct net_bridge_port *p)
+
+void br_fdb_delete_by_port(struct net_bridge *br,
+                           const struct net_bridge_port *p,
+                           int do_all)
 {
         int i;
 
@@ -142,6 +145,8 @@ void br_fdb_delete_by_port(struct net_bridge *br, struct net_bridge_port *p)
                         if (f->dst != p) 
                                 continue;
 
+                        if (f->is_static && !do_all)
+                                continue;
                         /*
                          * if multiple ports all have the same device address
                          * then when one port is deleted, assign