Questions on CREDIT_BLOCKED

Elliott, Robert (Server Storage) elliott at hp.com
Mon Apr 26 13:18:59 PDT 2004


* From the T10 Reflector (t10 at t10.org), posted by:
* "Elliott, Robert (Server Storage)" <elliott at hp.com>
*
That's sentence is in the introduction to the issue, not the proposed
text.  That question one of the reasons for the proposal :-) 

B) matches the current state machine wording (in one place).    If the
group wants it to mean A) then:

7.16.7.4
...
When transmit frame credit is not available and transmit frame credit is
blocked, this state machine shall send the Tx Credit Status (Credit
Blocked) message to the SSP_TF2:Tx_Wait state.

needs to change to:
When transmit frame credit is blocked, this state machine shall send the
Tx Credit Status (Credit Blocked) message to the SSP_TF2:Tx_Wait state.


-- 
Rob Elliott, elliott at hp.com 
Hewlett-Packard Industry Standard Server Storage Advanced Technology 
https://ecardfile.com/id/RobElliott 


-----Original Message-----
From: owner-t10 at t10.org [mailto:owner-t10 at t10.org] On Behalf Of Leon
Krantz
Sent: Monday, April 26, 2004 1:58 PM
To: t10 at t10.org
Subject: Questions on CREDIT_BLOCKED


Ref: 04-115r1 SAS-1.1 Miscellaneous changes
 
 
 
The statement "If a receiver sees CREDIT_BLOCKED at unexpected times, it
shall honor it." means:
 
A: The sender ignores all the outstanding RRDYs and stops sending
frames.
 
B: The sender continue sending frames as long as credit is available,
then assumes there will be no more RRDYs during this connection.
 
Arie Krantz
QLogic Corporation
 
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