Re: iSCSI : On the subject of R2T and Task Tags.

[Matt Wakeley <matt_wakeley@agilent.com>]

Pierre Labat wrote:
 
> To have differents tag or (tag + subtag) one for each R2T allows the target to find
> directly the buffer address. For example  using the tag as an index in a table. If
> not, the target has
> to go through a list of R2T control structures  and for each one compare the offset
> with
> with the interval recorded in the R2T structure, in order to find the right buffer.
> As it doesn't hurt on the initiator side, why not to do it?
> 
> In fact an R2T and the data related are as an exchange. Hence it is natural
> to have one identifier/exchange.
> Of course if the target want to use the same it could.

You already have everything you need.  The target_task_tag references the
context, and the Offset field references where in the buffer(s) to place the
data.

-Matt