net: bridge: Add support for notifying devices about FDB add/del
authorArkadi Sharshevsky <arkadis@mellanox.com>
Thu, 8 Jun 2017 06:44:14 +0000 (08:44 +0200)
committerDavid S. Miller <davem@davemloft.net>
Thu, 8 Jun 2017 18:16:25 +0000 (14:16 -0400)
commit6b26b51b1d13c62a09f55d745b06a8e964900715
tree9e71bdaa06ff10b744579b0e4ce5c94e3ded1e49
parentff5cf100110c6ea722d63dfa3d747ceb179e8da4
net: bridge: Add support for notifying devices about FDB add/del

Currently the bridge doesn't notify the underlying devices about new
FDBs learned. The FDB sync is placed on the switchdev notifier chain
because devices may potentially learn FDB that are not directly related
to their ports, for example:

1. Mixed SW/HW bridge - FDBs that point to the ASICs external devices
                        should be offloaded as CPU traps in order to
perform forwarding in slow path.
2. EVPN - Externally learned FDBs for the vtep device.

Notification is sent only about static FDB add/del. This is done due
to fact that currently this is the only scenario supported by switch
drivers.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Reviewed-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
drivers/net/ethernet/rocker/rocker_ofdpa.c
include/net/switchdev.h
net/bridge/br.c
net/bridge/br_fdb.c
net/bridge/br_private.h
net/bridge/br_switchdev.c