RE: iSCSI: minor conflict introduced by C bit

[pat_thaler@agilent.com]

Julian,

 

I don't think that does it because the text is ambiguous about whether the target could delay sending the tag by sending empty Login Response PDUs when the C bit is set to 0. I suggest:

 

Target portal group tag is a 16-bit numerical-value that uniquely identifies a portal group within an iSCSI target node. This key car-ries the value of the tag of the portal group that is servicing the Login request. The iSCSI target returns this key to the initiator in the Login Response PDU to the first Login Request PDU that has the C bit set to 0.

Pat

 

-----Original Message-----
From: Julian Satran [mailto:Julian_Satran@il.ibm.com]
Sent: Thursday, June 06, 2002 8:11 AM
To: ips@ece.cmu.edu
Subject: RE: iSCSI: minor conflict introduced by C bit

In fact 
for 11.9 the text will be: 

Target 
portal group tag is a 16-bit numerical-value that uniquely identifies a portal 
group within an iSCSI target node. This key car-ries the value of the tag of the 
portal group that is servicing the Login request. The iSCSI target returns this 
key to the initiator in the first non-empty Login Response PDU (where empty 
responses may be required by Login Requests with the C bit set to 1). 

11.4 refers to the Sendtargets 
response that will be presented whenever and has no other apparent conflict with 
C. 

Julo 
----- Forwarded by Julian Satran/Haifa/IBM 
on 06/06/2002 06:06 PM -----

Julian Satran 06/03/2002 08:21 PM

To:        "THALER,PAT (A-Roseville,ex1)" <pat_thaler@agilent.com>         cc:        ips@ece.cmu.edu         From:        Julian Satran/Haifa/IBM@IBMIL         Subject:        RE: iSCSI: minor conflict introduced by C bitLink

Thanks Pat - I think that 3 is acceptable and keeps current semantics 
unchanged. 

Julo

"THALER,PAT (A-Roseville,ex1)" <pat_thaler@agilent.com> 06/03/2002 07:47 PM Please respond to "THALER,PAT (A-Roseville,ex1)"

To:        Julian Satran/Haifa/IBM@IBMIL         cc:        ips@ece.cmu.edu         Subject:        RE: iSCSI: minor conflict introduced by C bit

Julian, 
  
I have noticed a minor conflict 
of the C bit with existing text. 
  
11.4 and 11.9 require the 
target to return TargetName and TargetPortal group in the first Login Response 
PDU but the new text on the C bit in 4.2 requires the target to return an empty 
response if the C bit is set. Therefore, if the C bit is set on the first Login 
Request PDU, the target will have conflicting requirements on it. 
  
One could resolve this by: 
1) Specify that the C bit MUST NOT be set in the first Login Request PDU; 
or 
2) Allow declarations to be sent in PDUs 
when the other side has the C bit set; or 
3) 
Change the requirement in 11.4 and 11.9 to be the response to the first Login 
Request PDU with the C bit set to zero. 
  
Regards, 
Pat