Re: iSCSI: FirstBurstSize and unsolicited data

["Nandakumar Ramamurthy" <nramamur@npd.hcltech.com>]

This is my original mail.

 

http://www.pdl.cmu.edu/mailinglists/ips/mail/msg10803.html

 

As the modified text (for 9.4.6.2) still specifies the case

of unsolicited non-immediate data and is not clear

how a target must respond to the case specified in my mail,

further clarifications are sought.

 

Thanks,

Nandakumar.

----- Original Message -----

From: Julian Satran

To: Nandakumar Ramamurthy

Cc: ips@ece.cmu.edu

Sent: Friday, June 21, 2002 3:10 PM

Subject: Re: iSCSI: FirstBurstSize and unsolicited data

I don't know what your original mail was :-) Julo

"Nandakumar Ramamurthy" <nramamur@npd.hcltech.com> 06/21/2002 11:35 AM Please respond to "Nandakumar Ramamurthy"

To:        Julian Satran/Haifa/IBM@IBMIL         cc:        <ips@ece.cmu.edu>         Subject:        Re: iSCSI: FirstBurstSize and unsolicited data

Hi,
 
I have been following the discussion on this thread.
 
I still have certain doubts regarding the
conditions I specified in my original mail.
 
The conditions are :
 
FirstBurstSize = 64KB
EDTL = 100KB ( EDTL > FirstBurstSize)
MaxRecvDataSegmentLength = 8KB
ImmediateData = Yes
InitialR2T = Yes
 
In the above case the initiator cannot send unsolicited Data-out PDUs.
Here unsolicited data(ImmediateData) < FirstBurstSize.
 
Will the target report any error in this case?
 
The modified text for Section 9.4.6.2 only refers to the cases
where unsolicited Data-outs can be sent.
 
Please clarify if I am missing something very obvious.
 
 
Thanks,
Nandakumar
Member Technical Staff
HCL Technologies, Chennai, INDIA.
http://san.hcltech.com
 
 
----- Original Message -----
From: Julian Satran
To: Eddy Quicksall
Cc: ips@ece.cmu.edu
Sent: Friday, June 21, 2002 11:41 AM
Subject: RE: iSCSI: FirstBurstSize and unsolicited data


Eddy,

I assume you meant EDTL not DSL and then the answer is yes and I again forgot to subtract  the immediate. A better formulation would be:

The target reports the "Incorrect amount of data" condition if dur-ing data output the total data length to output is greater than First-BurstSize and the initiator sent unsolicited non-immediate data but the total amount of unsolicited data is different than FirstBurst-Size. The target reports the same error when the amount of data sent as a reply to an R2T does not match the amount requested.

Julo

"Eddy Quicksall" <Eddy@Quicksall.com> 06/21/2002 12:22 AM Please respond to "Eddy Quicksall"

To:        Julian Satran/Haifa/IBM@IBMIL        cc:                Subject:        RE: iSCSI: FirstBurstSize and unsolicited data

Isn't this saying that if DSL > FirstBurstSize, it would be incorrect to send non-immediate unsolicited which is not equal to FirstBurstSize?
 
The target reports the "Incorrect amount of data" condition if dur-ing data output the total data length to output is greater than First-BurstSize, but the initiator sent an amount different than FirstBurstSize of unsolicited non-immediate data or the amount of data sent as a reply to an R2T does not match the amount requested.
 
Eddy