The ST_IFR state machine notifies the
application client of the receipt of a Transmission Complete (Command Failed,
ACK/NAK Timeout) message by sending a Command Complete Received (Service
Delivery or Target Failure - ACK/NAK Timeout) confirmation/argument.
The ST_IFR state machine notifies the
application client of the receipt of a Transmission Complete (Command Failed,
NAK Received) message by sending a Command Complete Received (Service Delivery
or Target Failure - NAK Received) confirmation/argument.
This information is listed in table
138 Confirmations sent to the SCSI application layer if a frame transmission
or reception error occurs from SAS-2 rev 4a.
Thanks for providing very clear explanation & confirming that Rules
for
failure of data frame.
There is doubt on how ST_IFR will notify Application layer that NAK or
ACK/NAK timeout have occurred for the data frame. ie Handling of message
Transmission Complete (Data-Out Failed, NAK Received) or Transmission
Complete (Data-Out Failed, ACK/ NAK Timeout) by ST_IFR machine.
Thanks once again.
On Thu, 2006-07-06 at 01:17, George Penokie wrote:
> Sandeep,
>
> I made a slight error in my first note to you. I quoted the paragraph
that
> is the response to a failure in the request to send the DATA frame
not the
> failure of the source to receive the DATA frame. That information
is in
> Table 141 ? Messages sent to the ST_IFR state machine in the last
two
> rows. So the message sent to the ST_IFR state machine is either
> Transmission Complete (Data-Out Failed, NAK Received) or Transmission
> Complete (Data-Out Failed, ACK/ NAK Timeout).
>
> Bye for now,
> George Penokie
>
> Dept 9A8 030-3 A410
> E-Mail: gop@us.ibm.com
> Internal: 553-5208
> External: 507-253-5208
>
>
>
> sandeep taneja <sandeep.taneja@mail.nsysinc.com>
> Sent by: owner-t10@t10.org
> 06/30/2006 02:33 AM
>
> To
> t10@t10.org
> cc
> Mark_Evans@maxtor.com
> Subject
> queries Regarding Transport layer
>
>
>
>
>
>
> * From the T10 Reflector (t10@t10.org), posted by:
> * sandeep taneja <sandeep.taneja@mail.nsysinc.com>
> *
> Hello !!
>
> Could anybody help me for solving some doubts in Transport layer.
> I have few doubts regarding implementation of Transport layer state
> machines.
>
> I am referring to SAS2r03a 22 April 2006.
>
> Following are queries :
> 1.How does ST_ITS state machine notify ST_IFR state machine that NAK
or
> ACK/NAK timeout have occurred for DATA frame corresponding to first
> enable burst.Is it going to use same message as it is using for the
DATA
> frame corresponding to XFER_RDY frame?
>
> if yes, then message( Transmission complete(Data-out failed,NAK
> received)corresponding to NAK & message Transmission complete(Data-out
> failed,ACK/NAK Timeout)) ST_ITS uses to notify ST_IFR is given but
How
> ST_IFR will handle these message or notify Application layer about
data
> sending failure seems to be missing.
>
>
>
> Thanks.
>
>
> --
> --------------------------------------------
> Regards
> Sandeep Taneja
>
> nSys Design Systems
> Accelerating designs
> http://www.nsysinc.com
> --------------------------------------------
>
>
>
>
>
>
>
> *
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