Re: iSCSI: Byte1 Bit 7 Seems Not to be reserved

["John Hufferd" <hufferd@us.ibm.com>]

But, this is the only place that we say a bit setting is set to 1 and is
also marked as reserved.  I think it would be easier, to just update the
documentation to not say it is reserved.  We have lots of other bits set to
1 always, that we do not call reserved.

I think the only other place we have ones in a reserved field is the places
where we set word fields to 0xFFFFFFFF.  And this is where the filed is so
marked because a setting of zero has another semantic.  I do not think that
applies to this bit, best to just update the document and not claim it to
be reserved.

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John L. Hufferd
Senior Technical Staff Member (STSM)
IBM/SSG San Jose Ca
Main Office (408) 256-0403, Tie: 276-0403,  eFax: (408) 904-4688
Home Office (408) 997-6136, Cell: (408) 499-9702
Internet address: hufferd@us.ibm.com


Julian Satran/Haifa/IBM@IBMIL@ece.cmu.edu on 12/14/2001 09:04:15 AM

Sent by:  owner-ips@ece.cmu.edu


To:   ips@ece.cmu.edu
cc:
Subject:  Re: iSCSI: Byte1 Bit 7 Seems Not to be reserved




John,

If you are referring to the fact that a reserved bit has to be 0 - that is
not so.
The statement about reserved is that they are 0 unless explicitly said
otherwise.
There are some other reserved positions that are set to 1.

Julo


                                                                         
                     John                                                
                     Hufferd@IBMUS             To:                       
                                       Julian                            
                     14-12-01 10:24    Satran/Haifa/IB                   
                                       M@IBMIL@IBMDE                     
                                               cc:                       
                                       ips@ece.cmu.edu                   
                                                                         
                                       Subject:                          
                                       iSCSI: Byte1                      
                                       Bit 7 Seems Not                   
                                       to be reserved                    
                                                                         



Julian,
in Draft 9, the SCSI Response PDU picture shows Byte 1 Bit 7 (normally the
Final Flag) to be set to 1.  Yet the Text that follows the picture says
that Byte 1 Bit 7 -5 is reserved.  We should probably make those
consistent.   I think you meant to indicate that the Response was the only
PDU associated with this action, so I think you need to mark only Byte 1
bit 6-5 as reserved.

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.
John L. Hufferd
Senior Technical Staff Member (STSM)
IBM/SSG San Jose Ca
Main Office (408) 256-0403, Tie: 276-0403,  eFax: (408) 904-4688
Home Office (408) 997-6136, Cell: (408) 499-9702
Internet address: hufferd@us.ibm.com