ipv4: factorize cache clearing for batched unregister operations

Signed-off-by: Octavian Purdila <opurdila@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 5 deletions

diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 816e2180bd60..6c1e56aef1f4 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -895,11 +895,11 @@ static void nl_fib_lookup_exit(struct net *net)
         net->ipv4.fibnl = NULL;
 }
 
-static void fib_disable_ip(struct net_device *dev, int force)
+static void fib_disable_ip(struct net_device *dev, int force, int delay)
 {
         if (fib_sync_down_dev(dev, force))
                 fib_flush(dev_net(dev));
-        rt_cache_flush(dev_net(dev), 0);
+        rt_cache_flush(dev_net(dev), delay);
         arp_ifdown(dev);
 }
 
@@ -922,7 +922,7 @@ static int fib_inetaddr_event(struct notifier_block *this, unsigned long event,
                         /* Last address was deleted from this interface.
                            Disable IP.
                          */
-                        fib_disable_ip(dev, 1);
+                        fib_disable_ip(dev, 1, 0);
                 } else {
                         rt_cache_flush(dev_net(dev), -1);
                 }
@@ -937,7 +937,7 @@ static int fib_netdev_event(struct notifier_block *this, unsigned long event, vo
         struct in_device *in_dev = __in_dev_get_rtnl(dev);
 
         if (event == NETDEV_UNREGISTER) {
-                fib_disable_ip(dev, 2);
+                fib_disable_ip(dev, 2, -1);
                 return NOTIFY_DONE;
         }
 
@@ -955,10 +955,11 @@ static int fib_netdev_event(struct notifier_block *this, unsigned long event, vo
                 rt_cache_flush(dev_net(dev), -1);
                 break;
         case NETDEV_DOWN:
-                fib_disable_ip(dev, 0);
+                fib_disable_ip(dev, 0, 0);
                 break;
         case NETDEV_CHANGEMTU:
         case NETDEV_CHANGE:
+        case NETDEV_UNREGISTER_PERNET:
                 rt_cache_flush(dev_net(dev), 0);
                 break;
         }