As mentioned explictly earlier in this thread, my WIP code for the
kernel level subsystem backstore using STGT kernel<-> user CDB
passthrough logic in drivers/target/target_core_stgt.c is a item on
my TODO list, but I will repeat, is NOT being tagged as a mainline
.37 item.
Tomo-san, mnc, and other storage folks have been briefed on the
remaining issues that would be involved to get a prototype
functioning with drivers/target/target_core_stgt.c, and rough idea of
what it would take in existing mainline drivers/scsi/scsi_tgt_*.c
code. With the current WIP code this will allow the userspace CDB ->
LUN passthrough to function transparently with all TCM SPC-4
compliant logic as a standalone struct se_subsystem_api
tcm_core_stgt.ko backstore.