bridge: Add SWITCHDEV_FDB_FLUSH_TO_BRIDGE notifier

so the switchdev can notifiy the bridge to flush non-permanent fdb entries
for this port. This is useful whenever the hardware fdb of the switchdev
is reset, but the netdev and the bridgeport are not deleted.

Note that this has the same effect as the IFLA_BRPORT_FLUSH attribute.

CC: Jiri Pirko <jiri@resnulli.us>
CC: Ivan Vecera <ivecera@redhat.com>
CC: Roopa Prabhu <roopa@nvidia.com>
CC: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Acked-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index ff22469..53e8b49 100644 (file)
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h
@@ -203,6 +203,7 @@ enum switchdev_notifier_type {
        SWITCHDEV_FDB_ADD_TO_DEVICE,
        SWITCHDEV_FDB_DEL_TO_DEVICE,
        SWITCHDEV_FDB_OFFLOADED,
+       SWITCHDEV_FDB_FLUSH_TO_BRIDGE,
 
        SWITCHDEV_PORT_OBJ_ADD, /* Blocking. */
        SWITCHDEV_PORT_OBJ_DEL, /* Blocking. */

diff --git a/net/bridge/br.c b/net/bridge/br.c
index b6fe30e..401eeb9 100644 (file)
--- a/net/bridge/br.c
+++ b/net/bridge/br.c
@@ -183,6 +183,11 @@ static int br_switchdev_event(struct notifier_block *unused,
                br_fdb_offloaded_set(br, p, fdb_info->addr,
                                     fdb_info->vid, fdb_info->offloaded);
                break;
+       case SWITCHDEV_FDB_FLUSH_TO_BRIDGE:
+               fdb_info = ptr;
+               /* Don't delete static entries */
+               br_fdb_delete_by_port(br, p, fdb_info->vid, 0);
+               break;
        }
 
 out: