On Fri, 2 Aug 2019 10:47:26 +0800, wenxu wrote: > > After all the same device may have both a TC block and a NFT block. > > Only one subsystem can be used for the same device for both indr-dev and hw-dev > the flow_block_cb_is_busy avoid the situation you mentioned. AFAIU that's a temporary limitation until drivers learn to manage multiple tables.