01/10/2021 10:54, Andrew Rybchenko: > >> Thomas, if I'm not mistaken, net/mlx5 dv_xmeta_en driver option > >> is vendor-specific way to address the same problem. > > > > Not exactly, it is configuring the capabilities: > > +------+-----------+-----------+-------------+-------------+ > > | Mode | ``MARK`` | ``META`` | ``META`` Tx | FDB/Through | > > +======+===========+===========+=============+=============+ > > | 0 | 24 bits | 32 bits | 32 bits | no | > > +------+-----------+-----------+-------------+-------------+ > > | 1 | 24 bits | vary 0-32 | 32 bits | yes | > > +------+-----------+-----------+-------------+-------------+ > > | 2 | vary 0-24 | 32 bits | 32 bits | yes | > > +------+-----------+-----------+-------------+-------------+ > > Sorry, but I don't understand the difference. Negotiate is > exactly about capabilities which we want to use.
The difference is that dv_xmeta_en is not enabling/disabling the delivery of mark/meta. It is just extending the scope (cross-domain) and the size. I think this is not covered in your proposal.
