> > so, to summarize: > > The HW does the work (truncates the big ip packet to series of ip > > packets, each with the relevant mtu size and increases the ip-id for > > each) > > The FW enables that work on the HW > > the FW in A0 card doesn't enable that option for the HW. > > Sounds like this bug causes a performance regression, and it sounds > like it puts incorrect packets on the wire. > > This should be patched, have the driver disable TSO for cards that > can't support it... > > Jason
Incredible how a card that does not support TSO can bring big packets on the wire that somehow get reassembled on the client side :) Maybe a two liner in mlx4_ib_query_device() could prevent further discussions. Markus
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