> > Has a direction bit been considered for Linux SCSI infrastructure?
> > It would be useful to be able to specify this starting at the sg
> > level on through to the hba layer.
>
> It's there but not visible through the sg driver.
That would make sense for 2.5
> > We currently support a RAID which uses vendor unique commands to do
> > device management. We need special versions of drivers that understand
> > the implied direction of the vendor unique commands. Under Irix, the
> > ds interface explicitly specifies a direction, so no driver code need
> > be changed to support this device.
>
> That's the problem. You'd break the interface.
> Nevertheless, it should be done in 2.5.
Breaking the old API isnt required. There is what seems to be a full direction
table in the IBM serveraid driver. If you hit an unknown on the old ABI just
error it.
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