From: Alexandra Winter <[email protected]>

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 <[email protected]>
CC: Ivan Vecera <[email protected]>
CC: Roopa Prabhu <[email protected]>
CC: Nikolay Aleksandrov <[email protected]>
Signed-off-by: Alexandra Winter <[email protected]>
Signed-off-by: Julian Wiedmann <[email protected]>
---
 include/net/switchdev.h | 1 +
 net/bridge/br.c         | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index ff2246914301..53e8b4994296 100644
--- 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 b6fe30e3768f..401eeb9142eb 100644
--- 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:
-- 
2.17.1

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