This patch set makes it possible to have synchronized dynamic ATU and FDB entries on locked ports. As locked ports are not able to automatically learn, they depend on userspace added entries, where userspace can add static or dynamic entries. The lifetime of static entries are completely dependent on userspace intervention, and thus not of interest here. We are only concerned with dynamic entries, which can be added with a command like: bridge fdb replace ADDR dev <DEV> master dynamic We choose only to support this feature on locked ports, as it involves utilizing the CPU to handle ATU related switchcore events (typically interrupts) and thus can result in significant performance loss if exposed to heavy traffic. On locked ports it is important for userspace to know when an authorized station has become silent, hence not breaking the communication of a station that has been authorized based on the MAC-Authentication Bypass (MAB) scheme. Thus if the station keeps being active after authorization, it will continue to have an open port as long as it is active. Only after a silent period will it have to be reauthorized. As the ageing process in the ATU is dependent on incoming traffic to the switchcore port, it is necessary for the ATU to signal that an entry has aged out, so that the FDB can be updated at the correct time. This patch set includes a solution for the Marvell mv88e6xxx driver, where for this driver we use the Hold-At-One feature so that an age-out violation interrupt occurs when a station has been silent for the system-set age time. The age out violation interrupt allows the switchcore driver to remove both the ATU and the FDB entry at the same time. It is up to the maintainers of other switchcore drivers to implement the feature for their specific driver. LOG: V2: Ensure the port is locked when using the feature as we must ensure that learning is enabled at all times for the interrupts to occur. This was missed in the previous version. Instead of ignoring unsupported flags, ensure that drivers are only called when supporting the feature. As 'dynamic' flag is legacy, all drivers support it at least by their previous handling. Hans J. Schultz (6): net: bridge: add dynamic flag to switchdev notifier net: dsa: propagate flags down towards drivers drivers: net: dsa: add fdb entry flags incoming to switchcore drivers net: bridge: ensure FDB offloaded flag is handled as needed net: dsa: mv88e6xxx: implementation of dynamic ATU entries selftests: forwarding: add dynamic FDB test drivers/net/dsa/b53/b53_common.c | 4 +- drivers/net/dsa/b53/b53_priv.h | 4 +- drivers/net/dsa/hirschmann/hellcreek.c | 4 +- drivers/net/dsa/lan9303-core.c | 4 +- drivers/net/dsa/lantiq_gswip.c | 4 +- drivers/net/dsa/microchip/ksz_common.c | 6 +- drivers/net/dsa/mt7530.c | 4 +- drivers/net/dsa/mv88e6xxx/chip.c | 20 ++++-- drivers/net/dsa/mv88e6xxx/chip.h | 9 ++- drivers/net/dsa/mv88e6xxx/global1_atu.c | 21 +++++++ drivers/net/dsa/mv88e6xxx/port.c | 6 +- drivers/net/dsa/mv88e6xxx/switchdev.c | 61 +++++++++++++++++++ drivers/net/dsa/mv88e6xxx/switchdev.h | 5 ++ drivers/net/dsa/mv88e6xxx/trace.h | 5 ++ drivers/net/dsa/ocelot/felix.c | 4 +- drivers/net/dsa/qca/qca8k-common.c | 4 +- drivers/net/dsa/qca/qca8k.h | 4 +- drivers/net/dsa/rzn1_a5psw.c | 4 +- drivers/net/dsa/sja1105/sja1105_main.c | 11 ++-- include/net/dsa.h | 9 ++- include/net/switchdev.h | 1 + net/bridge/br_fdb.c | 5 +- net/bridge/br_switchdev.c | 1 + net/dsa/dsa.c | 6 ++ net/dsa/port.c | 28 +++++---- net/dsa/port.h | 8 +-- net/dsa/slave.c | 20 ++++-- net/dsa/switch.c | 26 +++++--- net/dsa/switch.h | 1 + .../net/forwarding/bridge_locked_port.sh | 36 +++++++++++ 30 files changed, 258 insertions(+), 67 deletions(-) -- 2.34.1
