Add void (*iscsit_get_r2t_ttt)() to
struct iscsit_transport, iscsi-target
uses this callback to get
r2t->targ_xfer_tag.
Your driver allocates ttt's? That looks like bad
layering to me. This definitely deserves an explanation...
cxgbit.ko allocates ttt only for r2t pdus to do Direct Data
Placement of Data Out pdus, adapter uses the ttt value in
Data Out pdus to place data directly in the host buffers.
How do you guarantee that the core doesn't conflict with
your internal ttt's?
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