SRP task management function codes

[Edward A. Gardner]

* From the T10 Reflector (t10 at t10.org), posted by:
* "Edward A. Gardner" <eag at ophidian.com>
*
You are mis-reading these documents.

The original FCP used bitwise assignment.

Every document since then uses coded values, but with the coded values
chosen to be compatible / identical with the original FCP.  This includes
FCP-2, SPI-3/4 and SRP.

Go back and read it again.  The table describes code values, not bit
assignments.

Edward A. Gardner               eag at ophidian.com
Ophidian Designs                719 593-8866 voice
1262 Hofstead Terrace           719 593-8989 fax
Colorado Springs, CO  80907     719 210-7200 cell
-----Original Message-----
From: Elliott, Robert <Robert.Elliott at COMPAQ.com>
To: 't10 at t10.org' <t10 at t10.org>
Date: Monday, May 21, 2001 12:58 PM
Subject: SRP task management function codes


>* From the T10 Reflector (t10 at t10.org), posted by:
>* "Elliott, Robert" <Robert.Elliott at compaq.com>
>*
>SRP revision 4 includes an editor's note about Table 16 on page 30, the
list
>of task management functions.  Why is this table using bitwise assignment?
>SPI-4 did it this way, but FCP-2 and iSCSI just treat it as an encoded
>field.  I suggest encoding the values as:
>1 ABORT TASK
>2 ABORT TASK SET
>3 CLEAR ACA
>4 CLEAR TASK SET
>5 LOGICAL UNIT RESET
>All others reserved
>
>
>SRP revision 4:
>01h The task manager shall perform an ABORT TASK function (see SAM-2).
>02h The task manager shall perform an ABORT TASK SET function (see SAM-2).
>04h The task manager shall perform a CLEAR TASK SET function (see SAM-2).
>08h The task manager shall perform a LOGICAL UNIT RESET function (see
>SAM-2).
>20h Reserved.
>40h The task manager shall perform a CLEAR ACA function (see SAM-2).
>All other values reserved The task manager shall terminate the task with a
>GOOD status. The packetized failure code shall be set to TASK MANAGEMENT
>FUNCTION NOT SUPPORTED.
>
>SPI-4 revision 5:
>00h Indicates no task management requests for the current task.
>01h The task manager shall abort the task as defined in the ABORT TASK
>message (see 16.5.2).
>02h The task manager shall abort the task set as defined in the ABORT TASK
>SET message (see 16.5.3).
>04h The task manager shall clear the task set as defined in the CLEAR TASK
>SET message (see 16.5.5).
>08h The task manager shall perform a hard logical unit reset to of the
>selected logical unit as defined in the LOGICAL UNIT RESET message (see
>16.5.6).
>20h The task manager shall perform a hard target reset as defined in the
>TARGET RESET message (see 16.5.7).
>40h The task manager shall perform a clear ACA as defined in the CLEAR ACA
>message (see 16.5.4).
>All other values reserved The task manager shall terminate the task with a
>GOOD status. The packetized failure code shall be set to TASK MANAGEMENT
>FUNCTION NOT SUPPORTED.
>
>FCP-2 revision 7:
>7 obsolete
>6 CLEAR ACA
>5 TARGET RESET
>4 LOGICAL UNIT RESET
>3 reserved
>2 CLEAR TASK SET
>1 ABORT TASK SET
>0 reserved
>
>iSCSI revision 6:
>      1    Abort Task - aborts the task identified by the Referenced Task
>Tag field.
>      2    Abort Task Set - aborts all Tasks issued by this initiator on
the
>Logical Unit.
>      3    Clear ACA - clears the Auto Contingent Allegiance condition.
>      4    Clear Task Set - Aborts all Tasks (from all initiators) for the
>Logical Unit.
>      5    Logical Unit Reset
>      6    Target Warm Reset
>      7    Target Cold Reset
>
>---
>Rob Elliott, Compaq Server Storage
>Robert.Elliott at compaq.com
>
>
>
>*
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