Hi Richard, On further investigating, I did find that there is something called variable-length CDBs which you're alluding to. I thought that you were interested in decoding OSD and since OSD has a special peripheral device type, I suggested my first alternative.
It is quite easy to add a decoder for the overall variable-length CDB. However to decode each of the service actions for such CDBs is another beast. I can send a patch to handle variable-length CDBs quite soon, in about an hour or so. I don't have any traces with variable-length CDB and so cannot test the code. Dinesh Richard Sharpe writes: > On Mon, 11 Mar 2002 [EMAIL PROTECTED] wrote: > > > If you're attempting to decode OSD, the Inquiry response contains the > > peripheral type as 0x11 (byte 0, bits 0-4). You can save this information in > > the SCSI device type block and then decode later commands based on this. > > Hi Dinesh .... > > I would like to check my [somewhat limited] understanding of the SCSI spec > and SPC-3 vs SBC etc. > > It seems to me that variable sized CDBs should have 0x7F as their OpCode > byte, and should be distinguished from each other through the Action > field. This field is a 16-bit field. > > If so, I will probably make some changes to the SCSI dissector, and then > we can look to dissecting OSD. > > Is this correct? > > > Dinesh > > Richard Sharpe writes: > > > On Tue, 12 Mar 2002, Richard Sharpe wrote: > > > > > > > Hi, > > > > > > > > The current iSCSI dissector calls the SCSI dissector, which only > > > > understands SPC-2 SCSI commands, it seems. > > > > > > > > I need to be able to dissect OSD commands, which are carried in a CDB with > > > > an SPC-3 Variable Length CDB indicator (0x7F). > > > > > > Hmmm, the problem I am experiencing is because Ethereal's SCSI dissector > > > currently only understands SPC-2, SBC-2, and SSC-2. If the CDB Operation > > > Code is not found in the SPC-2 command set, tben the dissector searches > > > among the SBC-2 command set ... Which is where 0X7F is found :-( > > > > > > So, I need some way to tell what type of device we are talking about. > > > Better check what the iSCSI spec says. If it says SPC-3, then I can pass > > > an arg to the SCSI dissector telling it what command set to use. > > > > > > > What I am interested in knowing is: Is there an easy way to determine > > > > whether or not a stream is using SPC-3 or what? Is it carried in the iSCSI > > > > PDU or logon or something like that? > > > > > > > > > > > > > > -- > > > Regards > > > ----- > > > Richard Sharpe, [EMAIL PROTECTED], [EMAIL PROTECTED], > > > [EMAIL PROTECTED] > > > > > > > > > _______________________________________________ > > > Ethereal-dev mailing list > > > [EMAIL PROTECTED] > > > http://www.ethereal.com/mailman/listinfo/ethereal-dev > > > > > > > > > -- > Regards > ----- > Richard Sharpe, [EMAIL PROTECTED], [EMAIL PROTECTED], > [EMAIL PROTECTED] > > -- Out beyond the ideas of right-doing and wrong-doing there is a field. I'll meet you there. - Rumi
