bridge: del external_learned fdbs from device on flush or ageout

We need to delete from offload the device externally learnded fdbs when any
one of these events happen:

1) Bridge ages out fdb.  (When bridge is doing ageing vs. device doing
ageing.  If device is doing ageing, it would send SWITCHDEV_FDB_DEL
directly).

2) STP state change flushes fdbs on port.

3) User uses sysfs interface to flush fdbs from bridge or bridge port:

	echo 1 >/sys/class/net/BR_DEV/bridge/flush
	echo 1 >/sys/class/net/BR_PORT/brport/flush

4) Offload driver send event SWITCHDEV_FDB_DEL to delete fdb entry.

For rocker, we can now get called to delete fdb entry in wait and nowait
contexts, so set NOWAIT flag when deleting fdb entry.

Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/Documentation/networking/switchdev.txt b/Documentation/networking/switchdev.txt
index da82cd7..c5d7ade 100644 (file)
--- a/Documentation/networking/switchdev.txt
+++ b/Documentation/networking/switchdev.txt
@@ -251,15 +251,8 @@ out stale FDB entries.  To keep an FDB entry "alive", the driver should refresh
 the FDB entry by calling call_switchdev_notifiers(SWITCHDEV_FDB_ADD, ...).  The
 notification will reset the FDB entry's last-used time to now.  The driver
 should rate limit refresh notifications, for example, no more than once a
-second.  If the FDB entry expires, ndo_fdb_del is called to remove entry from
-the device.  XXX: this last part isn't currently correct: ndo_fdb_del isn't
-called, so the stale entry remains in device...this need to get fixed.
-
-FDB Flush
-^^^^^^^^^
-
-XXX: Unimplemented.  Need to support FDB flush by bridge driver for port and
-remove both static and learned FDB entries.
+second.  If the FDB entry expires, fdb_delete is called to remove entry from
+the device.
 
 STP State Change on Port
 ^^^^^^^^^^^^^^^^^^^^^^^^

diff --git a/drivers/net/ethernet/rocker/rocker.c b/drivers/net/ethernet/rocker/rocker.c
index a06b93d..d4ec660 100644 (file)
--- a/drivers/net/ethernet/rocker/rocker.c
+++ b/drivers/net/ethernet/rocker/rocker.c
@@ -4392,7 +4392,7 @@ static int rocker_port_fdb_del(struct rocker_port *rocker_port,
                               const struct switchdev_obj_fdb *fdb)
 {
        __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
-       int flags = ROCKER_OP_FLAG_REMOVE;
+       int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE;
 
        if (!rocker_port_is_bridged(rocker_port))
                return -EINVAL;

diff --cc net/bridge/br_fdb.c
Simple merge