bridge: vlan: move back vlan_flush
Ido Schimmel reported a problem with switchdev devices because of the order change of del_nbp operations, more specifically the move of nbp_vlan_flush() which deletes all vlans and frees vlgrp after the rx_handler has been unregistered. So in order to fix this move vlan_flush back where it was and make it destroy the rhtable after NULLing vlgrp and waiting a grace period to make sure noone can see it. Reported-by: NIdo Schimmel <idosch@mellanox.com> Signed-off-by: NNikolay Aleksandrov <nikolay@cumulusnetworks.com> Reviewed-by: NIdo Schimmel <idosch@mellanox.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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