On Fri, Feb 18, 2022 at 04:51:46PM +0100, Hans Schultz wrote:

Among the switchcores that support this feature is the Marvell
mv88e6xxx family.

Signed-off-by: Hans Schultz <redacted>
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Reviewed-by: Vladimir Oltean <olteanv@gmail.com>

Although this doesn't "add support for offloaded locked ports", that
passes right through with no DSA-level filtering, from
SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS to dsa_port_bridge_flags(),
to ds->ops->port_bridge_flags().

Rather, a clearer description of what this does is:

net: dsa: include BR_PORT_LOCKED in the list of synced brport flags

Make sure the DSA switch driver gets notified of changes to the
BR_PORT_LOCKED flag as well, for the case when a DSA port joins or
leaves a LAG that is a bridge port.