Aborting ELS Sequences (FC-LS Rev 1.62)

Gil Romo gil.romo at qlogic.com
Mon Feb 12 15:59:47 PST 2007


* From the T10 Reflector (t10 at t10.org), posted by:
* "Gil Romo" <gil.romo at qlogic.com>
*
Thanks, Jim, for the clarification.  I was familiar with Abort Sequence
and Abort Exchange but not with the acronym for the latter.  Its
"definition" appears in 4.2.12.1 of this document as ...
"In the case of Abort Exchange (i.e., ABTS-LS),..."
Gil
-----Original Message-----
From: Jim.Coomes at seagate.com [mailto:Jim.Coomes at seagate.com] 
Sent: Monday, February 12, 2007 3:34 PM
To: Gil Romo; t11_3 at t11.org
Cc: t10 at t10.org
Subject: Fw: Aborting ELS Sequences (FC-LS Rev 1.62)
Gil,
There are two separate list items to clarify the processing of the two
flavors of ABTS.
Item h) attempts to abort a single Sequence with ABTS (ABTS Basic Link
Service with the Parameter field bit 0 set to one).
Item i) attempts to abort the entire Exchange with ABTS-LS (ABTS Basic
Link
Service with the Parameter field bit 0 set to zero).
Jim
----- Forwarded by Jim Coomes/Seagate on 02/12/2007 05:17 PM -----
	     "Gil Romo"
	     <gil.romo at qlogic.
	     com>
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Subject 
				       Aborting ELS Sequences (FC-LS Rev
				       1.62)
	     02/12/2007 04:01
	     PM
Greetings,
A list included in 4.2.2 Sequence and Exchange management contains two
rules that seem to address the same condition and nearly the same
actions:
h) If the Sequence Initiator attempts to abort a Sequence using ABTS and
it
detects an E_D_TOV
waiting for the ACK frame in response to the ABTS, it shall abort the
Exchange using ABTSLS,
if conditions permit, and retry the original ELS with a different
Exchange;
and
i) If the Sequence Initiator attempts to abort a Sequence using ABTS-LS
and
it detects an
E_D_TOV waiting for the ACK frame in response to the ABTS-LS, it may
retry
the original ELS
with a different Exchange.
Is there duplication here?  If not already done, can someone please
address
this?
Regards,
Gil
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